DISPLAY CASE DOOR

Abstract

A display case including a frame with a first fastener, a door with a second fastener, and a bracket coupling the door to the frame is described. The bracket has a first end coupled a second end. The first end is pivotably coupled to the frame by the first fastener. The first end includes a first pair of spring arms having a first slot to couple to the first fastener and to allow the door to pivot between open and closed positions. The second end is slideably coupled to the door by the second fastener. The second end has detents on a second pair of spring arms and a second slot to allow the second fastener of the door to slide as the door is pivoted between open and closed positions. A first detent is positioned further from the first end of the bracket than a second detent.

Claims

1-20. (canceled)

21. A display case comprising: a frame coupled to a display case enclosure, the frame comprising a first fastener; a door mounted to the frame and comprising a second fastener coupled to a surface of the door; and a door bracket comprising a body with: a first end defining a first plane of the body, the first end comprising an aperture through which the first end is coupled to the first fastener allowing the door to pivot between open position and closed positions; and a second end opposite the first end, the second end defining a second plane of the body that is offset from the first plane, the second end slideably coupled to the second fastener, the second end comprising: a first pair of spring arms comprising a slot therebetween, the first pair of spring arms configured to allow the second fastener to slide as the door is pivoted between open and closed positions; and a plurality of detents on at least one of the first pair of spring arms, a first detent of the plurality of detents positioned further from the first end of the door bracket than a second detent of the plurality of detents.

22. The display case of claim 21, wherein the first end of the door bracket comprises a second pair of spring arms, the second pair of spring arms defining the aperture as a second slot therebetween configured to couple to the first fastener and allow the door to pivot between the open position and the closed position.

23. The display case of claim 22, wherein a solid, central region of the body separates the first pair of spring arms at the second end from the first pair of spring arms at the first end.

24. The display case of claim 21, wherein a distance between a center of the aperture and an edge of a transition between the first plane and the second plane is equal to or greater than 0.375 inches.

25. The display case of claim 24, wherein the transition is positioned closer to the first end than to a midpoint of the door bracket.

26. The display case of claim 21, wherein a central portion of the body defines a third plane that is offset from both the first plane and the second plane.

27. The display case of claim 26, wherein the body comprises a first transition region between the first plane and the third plane and a second transition region between the third plane and the second plane, wherein the second transition region is positioned at a midpoint the door bracket.

28. The display case of claim 26, wherein a distance between the first plane and the third plane is between 0.250 and 0.260 inches.

29. The display case of claim 26, wherein a distance between the third plane and the second plane is 0.050 inches.

30. The display case of claim 21, wherein the frame comprises a pivot standoff positioned between the frame and the first end of the door bracket, the first fastener extending through the first end of the door bracket and the pivot standoff to couple the door bracket to the frame.

31. The display case of claim 30, wherein the pivot standoff comprises: a post at least partially defining an internal bore configured to mate with the first fastener; a portion comprising external threads configured to couple the pivot standoff to the frame; and a set of flats between the post and the portion comprising external threads, the set of flats extending radially from the post and the portion comprising external threads.

32. The display case of claim 31, comprising a first bracket coupled between the frame and the pivot standoff and a second bracket coupled between the second end and the door, the second bracket configured to receive the second fastener, the first bracket and the second bracket each defining an outer surface, the respective outer surface spaced apart from the associated frame or the associated door, and wherein the first bracket comprises a threaded void configured to receive the external threads of the portion of the pivot standoff.

33. The display case of claim 32, comprising threaded inserts and threaded fasteners, the threaded fasteners positioned within the door and the frame, some the threaded fasteners extending through the first bracket to couple the first bracket to the frame and some of the threaded fasteners extending through the second bracket to couple the second bracket to the door.

34. The display case of claim 21, comprising an opening coupled to the slot, the opening sized to permit the first fastener to pass, upon application of a holding force sufficient to overcome the first pair of spring arms, and, thereby, disconnect the door bracket from the frame.

35. The display case of claim 34, wherein a longitudinal axis of the opening is offset from a longitudinal axis of the slot.

36. The display case of claim 21, wherein the second fastener comprises: a head; a rim coupled to the head; and a shank extending from the rim, the shank comprising threads, wherein a diameter of the rim is greater than a diameter of the head and the shank.

37. The display case of claim 22, wherein the first detent extends a first distance into the slot between the first pair of spring arms and is configured to apply a first holding force to the second fastener, the first holding force resisting further movement of the door beyond a first open angle, and wherein the second detent extends a second distance into the second slot between the first pair of spring arms, the second distance is greater than the first distance, the second detent configured to apply a second holding force to the second fastener, the second holding force resisting further movement of the door beyond a second open angle.

38. A door bracket comprising: a first end defining a first plane, the first end comprising an aperture through which the first end is coupled to a frame by a first fastener allowing a door to pivot between open position and closed positions relative to the frame; and a second end opposite the first end, the second end defining a second plane that is offset from the first plane, the second end slideably coupled to the door by a second fastener, the second end comprising: a first pair of spring arms comprising a slot therebetween, the first pair of spring arms configured to allow the second fastener to slide as the door is pivoted between open and closed positions; and a plurality of detents on at least one of the first pair of spring arms, a first detent of the plurality of detents positioned further from the first end of the door bracket than a second detent of the plurality of detents.

39. A door bracket comprising: a first end configured to pivotably couple to a first fastener of a display case frame, the first end comprising: a first pair of spring arms, the first pair of spring arms comprising a first slot therebetween configured to couple to the first fastener and to allow the door bracket to pivot about the first fastener; and a second end opposite the first end, the second end configured to slideably couple to a second fastener extending from a surface of a door, the second end comprising: a second pair of spring arms comprising a second slot therebetween configured to allow the second fastener of the door to slide as the door is pivoted between open and closed positions; and a plurality of detents on at least one of the second pair of spring arms, a first detent of the plurality of detents positioned further from the first end of the door bracket than a second detent of the plurality of detents.

40. A door bracket comprising: a first pair of spring arms at a first end of the door bracket, each spring arm of the first pair of spring arms comprising: a first aperture configured to be placed about a first fastener coupling the first end of the door bracket to a frame; a plurality of concave regions, where the plurality of concave regions together form a second aperture sized to accept the first fastener, the second aperture coupled to the first aperture, the second aperture configured to receive and accept a portion of the first fastener from the first aperture; and a first opening coupled to the plurality of concave regions, the first opening through which the first fastener is permitted to pass, upon application of a first holding force sufficient to overcome the first pair of spring arms, and, thereby, disconnect the door bracket from the frame; and a second pair of spring arms at a second end of the door bracket, the second pair of spring arms comprising: a slot therebetween in which a second fastener coupling the second end to a door slides as the door is pivoted between open and closed positions relative to the frame; and a first detent on at least one of the spring arms of the second pair of spring arms.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0101] FIG. 1A is a top view of an example display case with a display case door shut.

[0102] FIG. 1B is a top detailed view of the example display case with the display case door shut of FIG. 1A.

[0103] FIG. 2A is a top view of the example display case with the display case door open in a first position.

[0104] FIG. 2B is a top detailed view of the example display case with the display case door open in the first position of FIG. 2A.

[0105] FIG. 3A is a top view of the example display case with the display case door open in a second position.

[0106] FIG. 3B is a top detailed view of the example display case with the display case door open in the second position of FIG. 3A.

[0107] FIG. 4A is a top view of the example display case with the display case door open in a third position.

[0108] FIG. 4B is a top detailed view of the example display case with the display case door open in the third position of FIG. 4A.

[0109] FIG. 5A is a top view of the example display case with the display case door open in a fourth position.

[0110] FIG. 5B is a top detailed view of the example display case with the display case door open in the fourth position of FIG. 5A.

[0111] FIG. 6 is a top view of the example display case with the display case door open in a fifth position.

[0112] FIG. 7A is a top view of an example display case door bracket.

[0113] FIG. 7B is a side view of the example display case door bracket of FIG. 7A.

[0114] FIG. 8 is a top view of a portion of the display case door bracket of FIG. 7A.

[0115] FIG. 9 is a top view of a portion of another example display case door bracket.

[0116] FIG. 10A is a top view of another example display case with a display case door shut.

[0117] FIG. 10B is a top detailed view of the example display case with the display case door shut of FIG. 10A.

[0118] FIG. 11A is a top view of the example display case of FIG. 10A with the display case door open in a first position.

[0119] FIG. 11B is a top detailed view of the example display case of FIG. 10A with the display case door open in the first position of FIG. 11A.

[0120] FIG. 12A is a top view of the example display case of FIG. 10A with the display case door open in a second position.

[0121] FIG. 12B is a top detailed view of the example display case of FIG. 10A with the display case door open in the second position of FIG. 12A.

[0122] FIG. 13A is a top view of the example display case of FIG. 10A with the display case door open in a third position.

[0123] FIG. 13B is a top detailed view of the example display case of FIG. 10A with the display case door open in the third position of FIG. 13A.

[0124] FIG. 14A is a top view of the example display case of FIG. 10A with the display case door open in a fourth position.

[0125] FIG. 14B is a top detailed view of the example display case of FIG. 10A with the display case door open in the fourth position of FIG. 14A.

[0126] FIG. 15A is a top view of the example display case door bracket of FIG. 10A.

[0127] FIG. 15B is a side view of the example display case door bracket of FIG. 15B.

[0128] FIG. 16 is a perspective view of the thumb screw of example display case of FIG. 10A.

[0129] FIGS. 17A-17D are perspective views of the display case door illustrating the steps for reassembling the door.

[0130] FIG. 18A is a top view of another example display case door bracket.

[0131] FIG. 18B is a side view of the example display case door bracket of FIG. 18A.

[0132] FIG. 19A is a perspective view of an example fastener of the display case.

[0133] FIG. 19B is a top view of the fastener of the display case of FIG. 19A.

[0134] FIG. 19C is a side cross-section view of the fastener of the display case of FIG. 19A.

[0135] FIGS. 20A-20E are perspective views of the display case door illustrating the steps for reassembling the door with the display case door bracket of FIG. 18A and the fastener of FIG. 19A.

[0136] FIG. 21 is a top view of another example second end of the example display case door bracket of FIG. 18A.

[0137] FIG. 22 is a schematic front view of a hold open bracket including an offset according to one implementation.

[0138] FIG. 23A is a top view illustrating the bracket shown in FIG. 22.

[0139] FIG. 23B is a side view illustrating the bracket shown in FIG. 22.

[0140] FIG. 24 is a schematic front view of a hold open system according to one implementation.

[0141] FIG. 25 is a perspective view of a detent bolt.

[0142] FIG. 26A is a top view of a pivot standoff.

[0143] FIG. 26B is a side view of a pivot standoff.

[0144] FIG. 27 is a perspective view of a surface-mounted backing plate installed on a frame.

[0145] FIG. 28 is a perspective view of a surface-mounted backing plate installed on a door.

[0146] FIG. 29 is a perspective view of a surface-mounted backing plate, as seen from the back side of the plate.

[0147] FIG. 30 is a perspective view of a bracket installed on a door.

DETAILED DESCRIPTION

[0148] FIGS. 1A-6 illustrate an exemplary display case 100. The display case 100 includes a frame 102. The display case 100 includes a display case door 104 rotatably coupled to the frame 102. The display case 100 includes a bracket 106 pivotably coupled to the frame 102 and the display case door 104.

[0149] FIG. 1A is a top view of an example display case 100 with a display case door 104 shut. Referring to FIG. 1A, the display case 100 can be a refrigerated display case such as a refrigerator, a freezer, or other enclosure defining a temperature-controlled space.

[0150] The display case door 104 is rotatably coupled (secured) to the frame 102 by at least one hinge 108. The hinge 108 can be one or multiple hinges. A seal 110 can be mechanically coupled to the frame 102. Alternatively or in addition, a seal 112 can be mechanically coupled to the display case door 104. The seals 110 and 112 hold refrigerated air or heated air within the display case 100 when the display case door 104 is shut.

[0151] The display case door 104 includes a handle 114. A user (not shown) opens the display case door 104 by pulling on the handle 114. The display case door 104 separates from the frame 102 by rotating about the hinge 108. The bracket 106 limits the distance the display case door 104 moves from the frame 102 when opened by the user. The display case door 104 includes a transparent panel 116. The transparent panel 116 can be glass or a clear composite. In some cases, when the transparent panel 116 is glass the user can open the display case door 104 too far, too hard, or too quickly, creating a force on the display case door 104 which can cause the transparent panel 116 to crack or shatter.

[0152] The bracket 106 has mechanical features which can both provide mechanical tactile feedback to the user that the door is approaching to warn the user and reduce the force on the door. FIG. 7A is a top view of an example display case door bracket 106. FIG. 7B is a side view of an example display case door bracket 106. Referring to FIGS. 1A-7B, the bracket 106 is pivotably coupled to the frame 102 at a first end 118 of the bracket. As shown in FIGS. 7A-7B, the bracket 106 includes an aperture 702. The aperture 702 is sized to accept a pivot bolt 120 (shown in FIGS. 1A-6B. The pivot bolt 120 passes through the aperture 702 and mechanically couples the bracket 106 to the frame 102 to allow the bracket 106 to rotate when the display case door 104 is opened or closed by the user.

[0153] The bracket 106 includes a second end 122. The second end 122 includes a pair of spring arms 124a and 124b. The spring arms 124a and 124b define a slot 126. The display case 100 includes a bolt 128. The slot 126 is sized to accept the bolt 128 (shown in FIGS. 1A-6B. The bolt 128 passes through the slot 126 and mechanically couples the bracket 106 to the display case door 104 to allow the bolt 128 to slide through the slot 126 when the display case door 104 is opened or closed by the user.

[0154] The bracket 106 includes a first detent 130. The first detent 130 can include a first detent portion 132a mechanically coupled to the spring arm 124a and a second detent portion 132b mechanically coupled to the spring arm 124b which extend into the slot 126. The first detent portion 132a and the second detent portion 132b extending into the slot 126 reduces a width 704 (shown in FIG. 7A) of the slot 126 to a distance that is narrower than a diameter of the bolt 128.

[0155] FIG. 2A is a top view of an example display case 100 with the display case door 104 open in a first position. FIG. 2B is a top detailed view of an example display case 100 with the display case door 104 open in the first position of FIG. 2A. Referring to FIGS. 2A-2B, the first detent 130 (the first detent portion 132a and the second detent portion 132b) apply a first holding force to the bolt 128 when the user opens the display case door 104 to engage the bolt 128 to the first detent 130. The first holding force is applied to the bolt 128 by the first detent 130 resists further movement of the display case door 104 beyond a first open angle 202. The first open angle 202 is the angle of the door 104 relative to the frame 102 as the display case door 104 rotates about the hinge 108. In some cases, the first open angle 202 is less than 90 degrees.

[0156] The spring arms 124a and 124b apply a sufficient force to the display case door 104 to overcome the first holding force and permit the bolt 128 to slide past the first detent 130 to provide mechanical tactile feedback to the user that the user is moving the display case door 104 too far, too hard, or too quickly, creating a force on the display case door 104 which can cause the transparent panel 116 to crack or shatter. The spring arms 124a and 124b flex when the bolt 124 slides past the first detent 130.

[0157] The bracket 106 includes a second detent 134. The second detent 134 is positioned further from the first end 118 of the bracket than the first detent 130. The second detent 134 can include a first detent portion 136a mechanically coupled to the spring arm 124a and a second detent portion 136b mechanically coupled to the spring arm 124b which extend into the slot 126. The first detent portion 136a and the second detent portion 136b extending into the slot 126 reduces a width 706 (shown in FIG. 7A) of the slot 126 to a distance that is narrower than a diameter of the bolt 128.

[0158] FIG. 3A is a top view of the example display case 100 with the display case door open in a second position. FIG. 3B is a top detailed view of the example display case 100 with the display case door 104 open in the second position of FIG. 3A. Once the bolt 128 passes the first detent 130 it is in a void 302 in between the first detent and the second detent 134. No force is applied to the bolt 128 when the bolt 128 is the void 302. The door 104 is open at a third open angle 304 which is the angle of the door 104 relative to the frame 102 as the display case door 104 is in the void 302 while the door 104 rotates about the hinge 108.

[0159] FIG. 4A is a top view of the example display case 100 with the display case door 104 open in a third position. FIG. 4B is a top detailed view of the example display case 100 with the display case door 104 open in the third position of FIG. 4A. Referring to FIGS. 1A and 4A-4B, the second detent 134 (the first detent portion 136a and the second detent portion 136b) applies a second holding force to the bolt 128 when the user continues to open the display case door 104 past the first detent 130 (e.g., by the user a applying a force to the handle of the door) to engage the bolt 128 to the second detent 134. The second holding force applied to the bolt 128 by the second detent 134 resists further movement of the display case door 104 beyond a second open angle 304. The second open angle 304 is the angle of the door 104 relative to the frame 102 as the display case door 104 rotates about the hinge 108. In some cases, the first open angle 202 is less than 90 degrees. In some cases, the first open angle 202 is less than 80 degrees and the second hold open angle 402 is greater than 80 degrees.

[0160] The spring arms 124a and 124b apply a sufficient force to the display case door 104 by the user to overcome the second holding force and permit the bolt 128 to slide past the second detent 134 to provide mechanical tactile feedback to the user that the user is moving the display case door 104 too far, too hard, or too quickly, creating a force on the display case door 104 which can cause the transparent panel 116 to crack or shatter. The spring arms 124a and 124b flex when the bolt 124 slides past the second detent 134. In some cases, the second holding force is greater than the first holding force. For example, the first holding force can be less than seven pounds force, and the second holding force can be greater than seven pounds force but less than fifteen pounds force.

[0161] FIG. 5A is a top view of the example display case 100 with the display case door 104 open in a fourth position. FIG. 5B is a top detailed view of the example display case 100 with the display case door 104 open in the fourth position of FIG. 5A. Referring to FIGS. 1A, 5A-5B, and 7A-7B, the bracket 106 includes a third detent 138. The third detent 138 is positioned at a terminating end 140 of the first spring arm 124a and the second spring arm 124b. The third detent 138 defines an opening 142 through which the bolt 128 passes to disconnect from the bracket 106 (as described later in reference to FIG. 6).

[0162] Referring to FIG. 7A, the third detent 138 can include a first detent portion 708a and the second detent portion 708b. The third detent 138 (the first detent portion 136a and the second detent portion 136b) apply a third holding force to the bolt 128 when the user continues to open the display case door 104 past the first detent 130 and the second detent 134 to engage the bolt 128 to the third detent 138. The third holding force applied to the bolt 128 by the third detent 138 resists further movement of the display case door 104 beyond a fourth open angle 502. The fourth open angle 502 is the angle of the door 104 relative to the frame 102 as the display case door 104 rotates about the hinge 108. In some cases, the fourth open angle 502 is greater than 90 degrees.

[0163] The spring arms 124a and 124b apply a sufficient force to the display case door 104 by the user to overcome the third holding force and permit the bolt 128 to slide past the third detent 138 to provide mechanical tactile feedback to the user that the user is moving the display case door 104 too far, too hard, or too quickly (e.g., through a force applied by the user to the handle of the door), creating a force on the display case door 104 which can cause the transparent panel 116 to crack or shatter. The spring arms 124a and 124b flex when the bolt 124 slides past the third detent 138. In some cases, the third holding force is greater than the second holding force and the first holding force. For example, the first holding force can be less than seven pounds force, the second holding force can be greater than seven pounds force but less than fifteen pounds force, and the third holding force can be greater than fifteen pounds force.

[0164] FIG. 6 is a top view of the example display case 100 with the display case door 104 open in a fifth position. Referring to FIGS. 6-7B, when the user opens the door 104 past the third detent 138, the bolt 128 passes through the opening 142 to disconnect the bracket 106 from the door 104.

[0165] Referring to FIG. 7, in some implementations, the slot 126 width 710 (the distance between the spring arms 124a and 124b) is approximately 0.320 inches. In some implementations, the width 704 (a first gap between the first detent portion 132a and second portion of the first detent 132b) is approximately 0.174 inches. In some implementations, the width 706 (a second gap between the second detent first portion and the second detent second portion) is approximately 0.100 inches. In some implementations, the opening 142 between the first detent portion 708a of the third detent 138 and the second detent portion 708b of the third detent 138 is approximately 0.140 inches.

[0166] FIG. 8 is a top view of a portion of the display case door bracket 106. In some cases, as shown in FIG. 8, the first detent 130 extends a first distance 802 into the slot 126 between the spring arms 124a and 124b. The second detent 134 extends a second distance 804 into the slot 126 between the spring arms 124a and 124b. The second distance 804 is greater than the first distance 802. The opening 142 and the slot 126 share a longitudinal axis 806.

[0167] FIG. 9 is a top view of a portion of a second example display case door bracket 900. The bracket 900 includes a first spring arm 902a and a second spring arm 902b, substantially similar to the spring arms described previously. The bracket 900 includes a first detent 904 substantially similar to the first detent described earlier, including a first detent portion 906a and a second detent portion 906b.

[0168] The bracket 900 includes a slot 910. The slot 910 is defined by the first spring arm 902a and the second spring arm 902b. The slot 910 is substantially similar to the slot described previously. The slot 910 has a longitudinal axis 912.

[0169] The bracket 900 includes an opening 914. The opening 914 is substantially similar to the opening described earlier. The opening 914 has a longitudinal axis 916. The longitudinal axis 916 of the opening 914 is offset from the longitudinal axis 912 of the slot 910.

[0170] FIG. 9 shows a bolt 918, substantially similar to the bolt described earlier. The bolt 918 is engaged to the first detent 904, within the slot 910.

[0171] FIGS. 10A-17 illustrate another exemplary display case 1000. The display case 1000 includes a frame 1002. The display case 1000 includes a display case door 1004 rotatably coupled to the frame 1002. The display case 1000, the frame 1002, and the display case door 1004, are substantially similar to the display case, the frame, and the display case door previously described.

[0172] The display case 1000 includes a bracket 1006 pivotably coupled to the frame 1002 and the display case door 1004. The bracket 1006 is generally similar to the bracket described earlier.

[0173] FIG. 10A is a top view of another example display case 1000 with a display case door 1004 shut. FIG. 10B is a top detailed view of the example display case 1000 with the display case door 1004 shut of FIG. 10A.

[0174] The display case door 1004 is rotatably coupled (secured) to the frame 1002 by at least one hinge 1008. The hinge 1008 can be one or multiple hinges. A seal 1010 can be mechanically coupled to the frame 1002. Alternatively or in addition, a seal 1012 can be mechanically coupled to the display case door 1004. The seals 1010 and 1012 hold refrigerated air or heated air within the display case 1000 when the display case door 1004 is shut.

[0175] The display case door 1004 includes a handle 1014. The user opens the display case door 1004 by pulling on the handle 114. The display case door 1004 separates from the frame 1002 by rotating about the hinge 1008. The bracket 1006 limits the distance the display case door 1004 moves from the frame 1002 when opened by the user. The display case door 1004 includes a transparent panel 1016. The transparent panel 1016 can be glass or a clear composite. In some cases, when the transparent panel 1016 is glass the user can open the display case door 1004 too far, too hard, or too quickly, creating a force on the display case door 1004 which can cause the transparent panel 1016 to crack or shatter.

[0176] The bracket 1006 has mechanical features which can both provide mechanical tactile feedback to the user that the door is approaching to warn the user and reduce the force on the door. FIG. 15A is a top view of another example display case door bracket 1006. FIG. 15B is a side view of an example display case door bracket 1006. Referring to FIGS. 10A-16B, the bracket 1006 is pivotably coupled to the frame 1002 at a first end 1018 of the bracket by a threaded fastener 1020.

[0177] FIG. 16 is a perspective view of the threaded fastener 1020 of example display case 1000 of FIG. 10A. As shown in FIG. 16, in some implementations, the threaded fastener 1020 is a thumb screw.

[0178] As shown in FIGS. 10A-10B and 15A-15B, the bracket 1006 includes a first pair of spring arms 1502a and 1502b at the first end 1018 of the bracket 1006. Each of the first pair of spring arms 1502a and 1502b include respective concave regions 1504a and 1504b, respectively. The concave regions 1504a and 1504b together form an aperture 1506 sized to accept the threaded fastener 1020.

[0179] The bracket 1006 includes a first opening 1508 at the first end 1018 defined by the first pair of spring arms 1502a and 1502b through which the threaded fastener 1020 is permitted to pass, upon application of a first holding force sufficient to overcome the first pair of spring arms 1502a and 1502b, and, thereby, disconnect the bracket 1006 from the frame 1002.

[0180] The bracket 1006 includes a second end 1022. The second end 1022 includes a second pair of spring arms 1024a and 1024b (shown in FIGS. 10A and 15A). The spring arms 1024a and 1024b define a slot 1026. The display case 1000 includes a bolt 1028. The slot 1026 is sized to accept the bolt 128 (shown in FIGS. 10A-14B. The bolt 1028 passes through the slot 1026 and mechanically couples the bracket 1006 to the display case door 1004 to allow the bolt 1028 to slide through the slot 1026 when the display case door 1004 is opened or closed by the user.

[0181] Referring to FIGS. 10A-15B, the bracket 1006 includes a first detent 1030. The first detent 1030 can include a first detent portion 1032a mechanically coupled to the spring arm 1024a and a second detent portion 1032b mechanically coupled to the spring arm 1024b which extend into the slot 1026. The first detent portion 1032a and the second detent portion 1032b extend into the slot 1026 and reduce a width 1518 (shown in FIG. 15A) of the slot 1026 to a distance that is narrower than a diameter of the bolt 1028.

[0182] FIG. 11A is a top view of an example display case 1000 with the display case door 1004 open in a first position. FIG. 11B is a top detailed view of an example display case 100 with the display case door 1004 open in the first position of FIG. 11A. Referring to FIGS. 11A-11B, the first detent 1030 (the first detent portion 1032a and the second detent portion 1032b) apply a second holding force to the bolt 1028 when the user opens the display case door 104 to engage the bolt 1028 to the first detent 1030. The first holding force is applied to the bolt 1028 by the first detent 1030 resists further movement of the display case door 1004 beyond a first open angle 1102. The first open angle 1102 is the angle of the door 1004 relative to the frame 1002 as the display case door 1004 rotates about the hinge 1008. In some cases, the first open angle 1102 is less than 82 degrees.

[0183] The spring arms 1024a and 1024b apply a sufficient force to the display case door 1004 to overcome the second holding force and permit the bolt 1028 to slide past the first detent 1030 to provide mechanical tactile feedback to the user that the user is moving the display case door 1004 too far, too hard, or too quickly, creating a force on the display case door 1004 which can cause the transparent panel 1016 to crack or shatter. The spring arms 1024a and 1024b flex when the bolt 1024 slides past the first detent 1030.

[0184] The first set of spring arms 1502a and 1502b include a second detent 1034. The second detent 1034 can include a first detent portion 1536a mechanically coupled to the spring arm 1502a and a second detent portion 1536b mechanically coupled to the spring arm 1502b which extend into a second slot 1510. The first detent portion 1536a and the second detent portion 1536b extending into the slot 1510 to reduce a width 1512 (shown in FIG. 15A) of the second slot 1510 to a distance that is narrower than a diameter of the threaded fastener 1020.

[0185] FIG. 12A is a top view of the example display case 1000 with the display case door 1004 open in a second position. FIG. 12B is a top detailed view of the example display case 1000 with the display case door 1004 open in the second position of FIG. 12A. Once the bolt 1028 passes the first detent 1030 it is in a void 302 in between the first detent and a third detent 138. The third detent 1038 is positioned at a terminating end 140 of the second spring arm 1024a and the second spring arm 1024b. The third detent 1038 defines an opening 1042 through which the bolt 1028 passes to disconnect from the bracket 1006 (as described later in reference to FIG. 15A-15B).

[0186] Referring to FIGS. 10A, 12A, and 15A, the third detent 1038 can include a first detent portion 1032a and the second detent portion 1032b. The third detent 1038 (the first detent portion 1032a and the second detent portion 1032b) apply a third holding force to the bolt 1028 when the user continues to open the display case door 1004 past the first detent 1030 0 to engage the bolt 1028 to the third detent 1038. The third holding force applied to the bolt 1028 by the third detent 1038 resists further movement of the display case door 1004 beyond a second open angle 1202. The second open angle 1202 is the angle of the door 1004 relative to the frame 1002 as the display case door 1004 rotates about the hinge 1008. In some cases, the second open angle 1202 is greater than 90 degrees.

[0187] The spring arms 1024a and 1024b apply a sufficient force to the display case door 1004 by the user to overcome the third holding force and permit the bolt 1028 to slide past the third detent 1038 to provide mechanical tactile feedback to the user that the user is moving the display case door 1004 too far, too hard, or too quickly, creating a force on the display case door 1004 which can cause the transparent panel 1016 to crack or shatter. The spring arms 1024a and 1024b flex when the bolt 1024 slides past the third detent 1038. In some cases, the third holding force is greater than the second holding force and the first holding force. For example, the first holding force can be less than seven pounds force, the second holding force can be greater than seven pounds force but less than fifteen pounds force, and the third holding force can be greater than fifteen pounds force. In the preceding example, as the bolt passes between the spring arms toward the distal end of the bracket, each detent creates a progressively larger holding force. In this manner, the user receives progressive mechanical feedback warning the user that the user continued motion may cause separation from the bracket and/or damage to the door.

[0188] FIG. 13A is a top view of the example display case 1000 of FIG. 10A with the display case door 1004 open in a third position. FIG. 13B is a top detailed view of the example display case 1000 of FIG. 10A with the display case door 1004 open in the third position of FIG. 13A. As the user continues to open the display case door 1004 to the third position at a third open angle 1302, the threaded fastener 1020 forces the first pair of spring arms 1502a and 1502b at the first end 1018 of the bracket 1006 to flex away from each other. The threaded fastener 1020 begins to move out of the aperture 1506 defined by the concave regions 1504a and 1504b of the first pair of spring arms 1502a and 1502b, respectively.

[0189] In some implementations, the first holding force is greater than the second holding force. In some implementations, the first open angle 1102 is less than 82 degrees and the second open angle is greater than 82 degrees but less than 89 degrees. In some implementations, first open angle 1102 is less than 82 degrees, the second open angle 1202 is 82 degrees or greater and less than 89 degrees, and the third open angle 1302 is 89 degrees or greater FIG. 14A is a top view of the example display case 1000 of FIG. 10A with the display case door 1004 open in a fourth position. FIG. 14B is a top detailed view of the example display case 1000 of FIG. 10A with the display case door 1004 open in the fourth position of FIG. 14A.

[0190] Referring to FIGS. 14A-15B, when the user opens the door 1004 past the first detent 1030, the bolt 1028 engages in the opening 1042. The threaded fastener 1020 passes through the aperture 1506 to disconnect the bracket 1006 from the door 1004. The door 1004 is at an angle 1402 relative to the frame 1002.

[0191] Referring to FIGS. 15A-15B, in some implementations, the first slot 1026 between the pair of spring arms is approximately 0.320 inches. In some implementations, the width 1512 (the first gap between the first detent portion 1536a and first detent portion 1536b) is approximately 0.180 inches. In some implementations, the width 1518 (the second gap between the second pair of detent portions 1032b and 1032b) is approximately 0.185 inches. In some implementations, the second opening 1042 is approximately 0.140 inches.

[0192] The slot 1026 of the bracket 1006 has a longitudinal axis 1514. The opening 1042 has a longitudinal axis 1516. The longitudinal axis 1516 of the opening 1042 is offset from the longitudinal axis 1514 of the slot 1026. In other implementations, not shown, the opening 1042 and the slot 1026 share a longitudinal axis 1514.

[0193] FIGS. 17A-17D are perspective views of the display case door illustrating the steps for reassembling the door.

[0194] FIG. 17A shows the first end 1018 of the bracket 1006 disengaged from the threaded fastener 1020. The user has opened the door 1004 too far. Another user (a second user), for example, a store employee or a store manager, can reassemble the bracket 1006 to the frame 1002. Referring to FIG. 17B, the second user removes the threaded fastener 1020 from the frame 1002.

[0195] Referring to FIG. 17C, the second user places the aperture 1506 of the first end 1018 of the bracket 1006 over a threaded hole 1702 in the frame 1002. The threaded hole 1702 is sized to accept the threaded fastener 1020.

[0196] Referring to FIG. 17D, the second user places the threaded fastener 1020 through the aperture 1506. The second user then screws the threaded fastener 1020 into the threaded hole 1702 to secure the bracket 1006 to the frame 1002.

[0197] FIGS. 18A-18B are views of another exemplary display case door bracket 1800. Referring to FIGS. 18A-18B, the bracket 1800 is generally similar to the brackets previously described. The bracket 1800 has mechanical features which can provide mechanical tactile feedback to the user that the door is approaching a fully open position to warn the user and reduce the force on the door. The bracket 1800 also has mechanical features which can facilitate attachment of the bracket 1800 to a fastener 1900 (described later in reference to FIGS. 19A-19C) of the frame 102 (as shown in FIGS. 20A-20C). FIGS. 20A-20C are perspective views of the display case door illustrating the steps for reassembling the door with the display case door bracket 1800 and the fastener 1900. Referring to FIGS. 18A-18B and 20A-20C, the bracket 1800 has a first end 1818 and a second end 1822. As shown in FIG. 20A, the first end 1818 of the bracket 1800 is pivotably coupled to fastener 1900 on the frame 102. The second end 1822 of the bracket 1800 is coupled to the door 104.

[0198] As shown in FIGS. 18A-18B, the first end 1818 of the bracket 1800 has a first pair of spring arms 1802a and 1802b. The first pair of spring arms 1802a and 1802b define a first slot 1806 in the first end 1818. The first slot 1806 couples to the fastener 1900 and allows the door 104 to pivot between an open position 2002 (as shown in FIGS. 20A-20C) and a closed position 2004 (as shown in FIG. 20D).

[0199] The first slot 1806 has a first portion 1810. The first portion 1810 has a width 1812 and a length 1816. The width 1812 of the first portion 1810 can vary along the length 1816. As shown in FIG. 18A, the width 1812 at a first location 1820 is greater than an outer diameter 1902 of a knob 1904 of the fastener 1900. The width 1812 at a second location 1824 can be less than the outer diameter 1902 of the knob 1904. The difference in the width 1812 at the first location 1820 and the second location 1824 can result in the first portion 1810 being shaped. For example, the first portion 1810 can be ovoid (as shown in FIG. 18), circular, pear-shaped, triangular, or lobular. When the width 1812 at location 1820 is greater than the outer diameter 1902 and is less than the outer diameter 1902 at location 1824, the fastener 1900 can be attached to the fastener 1900 by placing the knob 1904 through first portion 1810 of the first slot 1806 at the first location 1820 and sliding the fastener 1900 so that the knob 1904 moves from the first location 1820 to the second location 1824, capturing the knob 1904.

[0200] The first end 1818 includes a first detent 1834 coupled to the first portion 1810 of the can include a first portion 1836a mechanically coupled to the spring arm 1802a and a second portion 1836b mechanically coupled to the spring arm 1802b. The first portion 1836a and the second portion 1836b extend into a first slot 1806 to reduce a width 1812 of the first slot 1806 to a distance that is narrower than the outer diameter 1902 of the fastener 1900.

[0201] Each of the first pair of spring arms 1802a and 1802b include respective concave regions 1804a and 1804b, respectively. The concave regions 1804a and 1804b together form an aperture 1814 sized to accept the threaded fastener 1900 from the first portion and hold the fastener 1900 when the door 104 rotates.

[0202] The bracket 1800 includes a first opening 1808 at the first end 1818 defined by the first pair of spring arms 1802a and 1802b through which the fastener 1900 is permitted to pass, upon application of a first holding force sufficient to overcome the first pair of spring arms 1802a and 1802b, and, thereby, disconnect the bracket 1800 from the frame 1002. The fastener 1900 passes through the first portion 1836a and the second portion 1836b, which apply the first holding force to the fastener 1900, to move from the aperture 1814 into the opening 1808 and disconnect from the bracket 1800.

[0203] The first portion 1810 of the bracket 1800 has a longitudinal axis 1826 corresponding to the length 1816. The opening 1808 has a longitudinal axis 1828. The longitudinal axis 1828 of the opening 1808 is offset from the longitudinal axis 1828 of the first portion 1810 (in other words, they are not aligned). In other implementations, not shown, the opening 1808 and the first portion 1810 are not offset (in other words, they are aligned).

[0204] The bracket 1800 includes the second end 1822. The second end 1822 of the bracket 1800 is coupled to the door 104. The second end 1822 is generally similar to the second ends previously described in reference to FIGS. 7A-7B and 15A-15B. The second end 1822 includes a second pair of spring arms 1830a and 1830b. The spring arms 1830a and 1830b define a second slot 1832. Referring to FIGS. 20A-20E, the door 104 includes a second fastener 2006. The second fastener 2006 is substantially similar to the bolt 128 previously described in reference to FIGS. 10A-14B. The second slot 1832 is sized to accept the second fastener 2006. The second fastener 2006 passes through the second slot 1832 and mechanically couples the bracket 1800 to the display case door 104 to allow the second fastener 2006 to slide through the second slot 1832 when the display case door 104 is opened or closed by the user.

[0205] The second end 1822 of the bracket 1800 includes a first detent 1838 coupled to the second pair of spring arms 1830a and 1830b. The first detent 1838 can include a first portion 1840a mechanically coupled to the spring arm 1830a and a second portion 1840b mechanically coupled to the spring arm 1830b which extend into the second slot 1832. The first portion 1840a and the second portion 1840b extending into the second slot 1832 reduces a width 1842 (shown in FIG. 18A) of the second slot 1832 to a distance that is narrower than a diameter (not shown) of the second fastener 2006. The first detent 1838 applies a second holding force to the second fastener 2006 which must be overcome by the user moving the door 104 from the closed position 2004 to the open position 2002 so that the second fastener 2006 moves past the first detent 1838.

[0206] The second set of spring arms 1830a and 1830b include a second detent 1844. The second detent 1844 has a first portion 1846a mechanically coupled to the spring arm 1830a and a second portion 1846b mechanically coupled to the spring arm 1832b. The first portion 1846a and the second portion 1846b extend into the second slot 1832 to reduce a width 1848 of the second slot 1832 to a distance that is narrower than the diameter of the second fastener 2006. The second fastener 2006 slides in the second slot 1832 in the direction of arrow 1850 to move past the first detent 1838 to contact the second detent 1844 as the user opens the door from the closed position 2004 to the open position 2002, as shown in reference to FIGS. 20A-20E. The second detent 1844 applies a third holding force to the second fastener 2006 which must be overcome by the user moving the door 104 from the closed position 2004 to the open position 2002 so that the second fastener 2006 moves past the second detent 1844.

[0207] Referring to FIGS. 18A-18B, the bracket 1800 includes a third detent 1852. The third detent 1852 is positioned at a terminating end 1854 of the second set of spring arms 1830a and 1830b. The third detent 1852 defines an opening 1856 through which the second fastener 2006 passes to disconnect from the bracket 1800 (as described later in reference to FIGS. 20A-20E).

[0208] Referring to FIGS. 18A-18B, the third detent 1852 can include a first portion 1858a and the second portion 1858b. The third detent 1852 (the first portion 1858a and the second detent portion 1858b) apply a fourth holding force to the second fastener 2006 when the user continues to open the display case door 104 past the first detent 1838 and the second detent 1844 to engage the second fastener 2006 to the third detent 1852. The third holding force applied to the second fastener 2006 by the third detent 1852 resists further movement of the display case door 104 until a force equal to or greater than the fourth holding force is applied by the user to the door 104.

[0209] The second set of spring arms 1830a and 1830b apply a sufficient force to the display case door 104 by the user to overcome the fourth holding force and permit the second fastener 2006 to slide past the third detent 1852 to provide mechanical tactile feedback to the user that the user is moving the display case door 104 too far, too hard, or too quickly, creating a force on the display case door 104 which can cause the transparent panel 116 to crack or shatter. The second set of spring arms 1830a and 1830b flex when the second fastener 2006 slides past the third detent 1852. In some cases, the fourth holding force is greater than the third holding force and the second holding force. For example, the second holding force can be less than seven pounds force, the third holding force can be greater than seven pounds force but less than fifteen pounds force, and the fourth holding force can be greater than fifteen pounds force. When the user opens the door 104 past the third detent 1852, the second fastener 2006 passes through the opening 1856 to disconnect the bracket 1800 from the door 104.

[0210] Referring to FIGS. 20A-20E, the second detent 1844 (the first portion 1840a and the second portion 1840b) apply the second holding force to the second fastener 2006 when the user opens the display case door 104 to engage the second fastener 2006 to the first detent 1838. The first holding force is applied to the second fastener 2006 by the first detent 1838 resists further movement of the display case door 1004 beyond a first open angle 2008. The first open angle 2008 is the angle of the door 104 relative to the frame 102 as the display case door 104 rotates about the fastener 1900. In some cases, the first open angle 2008 is less than 82 degrees.

[0211] The third holding force applied to the second fastener 2006 by the second detent 1844 resists further movement of the display case door 104 beyond a second open angle 2010. The second open angle 2010 is the angle of the door 104 relative to the frame 102 as the display case door 104 rotates about the fastener 1900. In some cases, the second open angle 2010 is equal to or greater than 82 degrees and less than 90 degrees.

[0212] The second set of spring arms 1830a and 1830b flex when the second fastener 2006 slides past the third detent 1852. As the user continues to open the display case door 104 to a third open angle 2012, the second fastener 2006 forces the second pair of spring arms 1830a and 1830b at the second end 1822 of the bracket 1800 to flex away from each other. The second fastener 2006 begins to move out of the second slot 1832 past the third detent 1852 and out the opening 1856 to disconnect from the bracket 1800 from the frame 102 at a third open angle 2012.

[0213] In some implementations, the first holding force is greater than the second holding force. In some implementations, the first open angle 2008 is less than 82 degrees and the second open angle 2010 is greater than 82 degrees but less than 89 degrees. In some implementations, first open angle 2008 is less than 82 degrees, the second open angle 2010 is 80 degrees or greater and less than 90 degrees, and the third open angle 2012 is 90 degrees or greater.

[0214] As shown in FIGS. 18A-18B, a width 1860 between the second pair of spring arms 1830a and 1830b is approximately 0.320 inches, the width 1842 (a first gap) between the first and second portions 1840a and 1840b of the second detent 1844 is approximately 0.174 inches, the width 1848 (a second gap) between the second pair of detents is approximately 0.100 inches, and a width 1862 of the opening 1856 between the third pair of detents is approximately 0.140 inches.

[0215] A longitudinal axis 1864 of the opening 1856 is offset from the longitudinal axis 1826 of the second slot 1832. As shown in FIG. 18A, the longitudinal axis 1864 of the opening 1856 is perpendicular to the longitudinal axis 1826 of the second slot 1832.

[0216] FIG. 21 is a top view of another example second end 2122 of the example display case door bracket 1800 of FIG. 18A. Referring to FIG. 21, the bracket 1800 is placed about the fastener 1900, described in detail later. The second end 2122 is generally similar to the second end 1822 previously described. The second end 2122 includes the first spring arm 1830a and the second spring arm 1830b which define the slot 1832. The second end 2122 has the first detent first detent 1838, the second detent 1844, and the third detent 1852. The third detent 1852 defines the opening 1856 through which the fastener 1900 passes to disconnect from the second end 2122 of bracket 1800. The longitudinal axis 1864 of the opening 1856 can be at an angle 2102 with the longitudinal axis 1826 of the slot 1832. The angle 2102 can be between zero and three hundred and sixty degrees.

[0217] FIGS. 19A-19C are views of an example fastener 1900 of the display case. Referring to FIGS. 19A-19C, the fastener 1900 has a backing plate 1906, a shaft 1908, and the knob 1904. The backing plate 1906 couples to the frame 102. The shaft 1908 extends from a surface 1910 of the backing plate 1906. Shaft 1908 can be a smooth shaft. The knob 1904 is coupled to a first end 1912 of the shaft. A second end 1914 of the shaft 1908 is coupled to the surface 1910 of the backing plate 1906. The first end 1912 is opposite the second end 1914 of the shaft 1908.

[0218] The backing plate 1906 has a multiple voids 1916 extending from the surface 1910 through the backing plate 1906 to a second surface 1918. The fastener 1900 can include multiple screws 1920. The voids 1916 accept the screws 1920. The screws 1920 pass through the voids 1916 to couple the fastener 1900 to the frame 102.

[0219] The outer diameter 1902 of the knob 1904 is less than the width 1812 (an inner dimension) of the first portion 1810 of the first slot 1806. An outer diameter 1922 of the shaft 1908 is less than an inner dimension 1866 (that is the diameter) of the aperture 1814 (the second portion) of the first slot 1806. The knob 1904 of the fastener 1900 passes through the first portion 1810 of the first slot 1806 at the first location 1820 to couple the fastener 1900 to the bracket 1800. The shaft 1908 slides in the first portion 1810 from the first location 1820 to the second location 1824 where the shaft 1908 enters the aperture 1814. The aperture 1814 defines a seat to hold the shaft 1914 fastener 1900 so that the bracket 1800 is pivotally coupled on the shaft 1908.

[0220] Referring to FIGS. 18A-20E, the bracket 1800 is installed in a display case 100 having the frame 102 and the door 104. In one implementation, a method includes positioning the bracket 1800 such that the knob 1904 of the fastener 1900 of the frame 102 passes through the first portion 1810 of the first slot 1806 in the bracket 1800. Before positioning the bracket 1800 such that the knob 1904 passes through the first portion 1810 of the first slot 1806, the method can include coupling the fastener 1900 with a frame member 2016 of the frame 102 of the display case 100.

[0221] The method includes moving the bracket 1800 relative to the fastener 1900 such that the shaft 1908 of the fastener 1900 moves along the first slot 1806. Moving the bracket 1800 relative to the fastener 1900 can include applying a sufficient force to the bracket 1800 to overcome at least the first detent 1834 between the first portion 1810 and the second portion 1814 (the aperture 1814) of the first slot 1806.

[0222] The method includes engaging the shaft 1908 of the fastener 1900 in a seat 1814 (in this example, defined by the aperture in the second portion) of the first slot 1806, such that when the shaft 1908 of the fastener 1900 is engaged in the seat 1814, the bracket 1800 is pivotally coupled on the shaft 1908 of the fastener 1900 and the knob 1904 inhibits the bracket 1800 from separating from the fastener 1900.

[0223] The method can include coupling the first end 1818 previously described which includes the first pair of spring arms 1802a and 1802b to the door 104. The second end 1822 of the bracket 1800 is coupled to the door 104 of the display case 100 before positioning the bracket 1800 such that the knob 1904 of the fastener 1900 of the frame 102 passes through the first portion 1810 of the first slot 1806.

[0224] In some implementations, a hold open bracket includes an offset between the frame-mounted portion of the bracket and the door-mounted portion of the bracket. An offset bracket can accommodate a gap (e.g., vertical misalignment) between the frame of a display case and a rail of a door to which the hold open is coupled.

[0225] FIG. 22 is a front view of a hold open bracket according to one implementation. In this example, the hold open bracket is in the form of a Z-bracket. Bracket 2200 is coupled between frame 2202 and door 2204. On the frame end, bracket 2200 is installed between pivot standoff 2206 and fastener 2208. On the door end, bracket 2200 is slidably coupled on door 2204 by way of fastener 2210.

[0226] FIG. 23A is a top view illustrating bracket 2200 shown in FIG. 22. Bracket 2200 includes slot 2301. FIG. 23B is a side view illustrating bracket 2200. In this example, bracket 2200 includes two offsets, first offset 2300 and second offset 2302. First offset 2302 is near the frame end of bracket 2200. First offset 2302 is provided in the form of a bend 2304 in bracket 2200. In one implementation, first offset 2300 is in a range of 0.250 to 0.260 inches. Flat 2306 can be at least about 0.375 inches or more. Second offset 2304 can be about midway between the ends of bracket 2200. In one example, second offset 2302 is about 0.05 inches.

[0227] In one example, bracket 2200 is produced (e.g., stamped) from sheet metal. Bracket 2200 can also be produced by machining, casting, molding, 3-D printing, or other manner.

[0228] An offset bracket can reduce loads on the door rail, frame, or mounting hardware. The offset can better align a hold open to reduce forces applied to standoffs. In some cases, an offset bracket can avoid stresses on a standoff reaching the standoff's material yield limit. In the example shown in FIG. 22, the offset in bracket 2200 can reduce loads (e.g., bending loads) on pivot standoff 2206.

[0229] In some implementations, an offset creates a dampening effect that reduces the shock applied to the standoffs. For example, the door may be swung open and comes to a full stop when the detent bolt reaches the end of the hold open slot. As the standoffs pull away from each other, the developed inertia may cause the hold open offset to try to straighten. The material, heat treat, and temper provide can be selected to provide spring properties to stay under the elastic limit so the hold open returns to the original shape.

[0230] In some implementations, an offset bracket is selected based on gap between a door and a frame. In one example, an offset bracket is selected at a production facility. In other another example, the offset bracket is selected and installed while the display case door is in service. In certain implementations, brackets with different offsets are provided. A bracket can be selected based on the combination of door and frame for a particular installation or door/frame configuration.

[0231] In the example shown in FIGS. 22, 23A, and 23B, bracket 2200 includes two offsets. In other implementations, a bracket includes only one offset, or more than two offsets.

[0232] In some implementations, a hold open system for a door includes a hold open bracket connected to a frame by away of a pivot standoff, and connected to a door by way of a detent bolt. The pivot hardware can mounted on the frame by way of a backing plate. The detent hardware can be coupled to the door by way of a backing plate.

[0233] FIG. 24 is a schematic front view of a hold open system 2400 according to one implementation. Hold open system 2400 includes bracket 2402. Bracket 2402 is coupled between frame 2404 and door 2406. Frame-side backing plate 2408 is coupled to frame 2404. Door-side backing plate 2410 is coupled to door 2406. The backing plates can be secured using screws or other fasteners.

[0234] Pivot standoff 2412 is threaded into frame-side backing plate 2408. Fastener 2414 is installed in in pivot standoff 2412. Bracket 2402 pivots at the frame end on fastener 2414.

[0235] Detent bolt 2416 is threaded into door-side backing plate 2410. Bracket 2402 slidably engages detent bolt 2416.

[0236] FIG. 25 is a perspective view of a detent bolt. Detent bolt 2416 includes head 2500, rim 2502, and shank 2504. The diameter of rim 2502 is larger than shank 2504. Shank 2504 includes threads 2506. Detent bolt 2416 can be heat treated to a core hardness of HRC 28-38 and case hardness of HRC 45 or more. In some instances, a nylon patch such as ND-3141 or epoxy ND 593S is applied around the threads.

[0237] FIG. 26A is a top view of a pivot standoff. FIG. 26B is a side view of a pivot standoff. Pivot standoff 2412 includes hex flats 2600, post 2602, and threaded portion 2604. Bore 2606 can include threads to receive fastener (shown in FIG. 24). In one example, fastener 2414 includes 8-32 UNC threads. Pivot standoff 2412 can be heat treated to a core hardness of HRC 28-38 and case hardness of HRC 45 or more. In some instances, a nylon patch such as ND-3141 or epoxy ND 593S is applied around the threads.

[0238] In one example, detent bolt and pivot standoff are a low carbon steel. In some implementations, a corrosion resistive coating is included. In one example, a Xylan coating (produced by PPG Industries) is applied to a portion of detent bolt 2416 and pivot standoff 2412.

[0239] FIG. 27 is a perspective view of a backing plate installed on a frame. In this example, frame-side backing plate 2408 is surface mounted on frame 2404. Frame-side backing plate 2408 includes threaded hole 2409. Threaded hole 2409 can receive pivot standoff 2412 (shown in FIGS. 26A and 26B).

[0240] FIG. 28 is a perspective view of a backing plate installed on a door. In this example, door-side backing plate 2410 is surface mounted on door 2406. Threaded hole 2411 can receive detent bolt 2416 (shown in FIG. 25).

[0241] FIG. 29 is a perspective view of a surface-mounted backing plate from the back side of the plate. Door-side backing plate 2410 includes body 2900 and boss 2902. Boss 2902 includes internal threads for receiving a portion of detent bolt 2416 (shown in FIG. 25). Fasteners can be installed in threaded inserts 2904 to secure door-side backing plate 2410. Threaded inserts 2904 can be pre-installed on door 2406.

[0242] For illustrative purposes, FIG. 29 shows a backing plate installed on a rail of door. A backing plate installed on the frame can include similar features to that shown in FIG. 29.

[0243] In certain implementations, the bracket in installed in the hold open system described in FIGS. 24 through 29 is a z-bracket, such as the one shown in FIGS. 22, 23A, and 23B.

[0244] In various implementations described above, a bracket includes a breakaway feature at one end of the bracket. A bracket can, nevertheless, in some implementations not have a breakaway feature at either end of the bracket. FIG. 30 is a perspective view of a bracket 3000 installed on a door (the frame is omitted for clarity). Bracket 3000 includes door end 3002 and frame end 3004. Frame end 3004 includes an aperture that accommodates a pivot fastener 3008. Door end 3002 includes main slot 3010, detent 3012, and transverse slot 3014. Detent bolt 3016 is slidably coupled to bracket 3000 in main slot 3010. Bracket 3000 pivots at frame end 3004 on pivot fastener 3008.

[0245] In the example shown in FIG. 30, there is one detent before reaching the end of main slot 3010. Door end 3002 can, however, include two or more detents. Each detent can provide a tactile indication to the user that the limit of the hold open is approaching.

[0246] While a number of examples have been described for illustration purposes, the foregoing description is not intended to limit the scope of the invention, which is defined by the scope of the appended claims. There are and will be other examples and modifications within the scope of the following claims. Furthermore, one of skill in the art would appreciate that features described in reference to a specific embodiment are not limited to that embodiment and can be interchanged with features of other embodiments.