Door closing mechanism

10047555 ยท 2018-08-14

Assignee

Inventors

Cpc classification

International classification

Abstract

A camming member for a door may have a camming surface which lifts the door as the door is traversed from an opened position to a closed position. The lifting movement of the door caused by the camming member facilitates one or more latches used to reinforce a periphery of the door to be engaged without further user intervention.

Claims

1. A vertical wall comprising: a panel fabricated from a plurality of interconnected horizontal and vertical wire rods, the plurality of interconnected horizontal and vertical wire rods arranged to form an opening for allowing an animal to pass through the panel; a door fabricated from a plurality of interconnected horizontal and vertical wire rods, the door being pivotally hinged to a first vertical wire rod of the panel and traversable between a closed position and a closed position, the door being sufficiently large to cover the opening to block the opening and prevent the animal from passing through the opening of the panel when the door is in the closed position, and the animal being capable of passing through the opening when the door is in the opened position, a bottom surface of a distal end portion of a first horizontal wire rod of the door adjacent to the first vertical wire rod of the panel defining a camming surface configured to slide against a first horizontal wire rod of the panel as the door is traversed from the opened position to the closed position to lift the door upward; and a latch mounted to the panel or door which allows the door to be pivoted to the opened or closed position only by lifting the door upward to disengage the latch.

2. The vertical wall of the claim 1 wherein the panel is one of a plurality of panels that form a pet crate or a play pen for an animal.

3. The vertical wall of claim 1 wherein the distal end portion of the first horizontal wire rod of the door is bent to gradually extend downward.

4. The vertical wall of claim 1 wherein the first horizontal wire rod of the door is wrapped around the first vertical wire rod of the panel.

5. The vertical wall of claim 1 wherein the latch is an inverted hook, upright hook, inverted tab or an upright tab.

6. The vertical wall of claim 1 wherein the caroming surface lifts the door upward to at least a point so that the latch clears a horizontal wire rod of the door or panel.

7. The vertical wall of claim 1 wherein the camming surface is closer to the first vertical wire rod of the panel compared to a free distal end of the door.

8. The vertical wall of claim 1 further comprising a clip defining a first portion rotatably attached to a horizontal wire rod of the panel and a second opposed portion removably attachable to a horizontal wire rod of the door, the second portion of the clip being curved or bent so that the horizontal wire rod of the door is traversed over center of the second portion of the clip when the clip is traversed between an engaged position and a disengaged position.

9. The vertical wall of claim 1 further comprising a clip defining a first portion rotatably attached to a horizontal wire rod of the door and a second, opposed portion removably attachable to a horizontal wire rod of the panel, the second portion of the clip being curved or bent so that the horizontal wire rod of the panel is traversed over center of the second portion of the clip when the clip is traversed between an engaged position and a disengaged position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which:

(2) FIG. 1 is a perspective view of a pet crate illustrating a first variant of a first embodiment of the camming member for lifting a door upward as the door is traversed from an opened position to a closed position;

(3) FIG. 2 is an enlarged perspective view of the camming member shown in FIG. 1;

(4) FIG. 3 illustrates the door as it is being traversed to the closed position;

(5) FIG. 4 illustrates the door as it is being further traversed to the closed position;

(6) FIG. 5 illustrates the door when being placed against a panel immediately before being traversed downward to the closed position;

(7) FIG. 6 illustrates the door in the closed position;

(8) FIG. 7 is an enlarged view of the camming member shown in FIG. 5;

(9) FIG. 8 is a side view of the camming member shown in FIG. 7;

(10) FIG. 9 is a side view of the camming member shown in FIG. 6;

(11) FIG. 1A is a perspective view of a pet crate illustrating a second variant of the first embodiment of the camming member for lifting a door upward as the door is traversed from an opened position to a closed position;

(12) FIG. 2A is an enlarged perspective view of the camming member shown in FIG. 1A;

(13) FIG. 3A illustrates the door as it is being traversed to the closed position;

(14) FIG. 4A illustrates the door as it is being further traversed to the closed position;

(15) FIG. 5A illustrates the door when being placed against a panel immediately before being traversed downward to the closed position;

(16) FIG. 6A illustrates the door in the closed position;

(17) FIG. 7A is an enlarged view of the camming member shown in FIG. 5A;

(18) FIG. 8A is a side view of the camming member shown in FIG. 7A;

(19) FIG. 9A is a side view of the camming member shown in FIG. 6A;

(20) FIG. 10 is an enlarged perspective view of a second embodiment of the camming member;

(21) FIG. 11 illustrates the door as it is being traversed to the closed position;

(22) FIG. 12 illustrates the door as it is being further traversed to the closed position;

(23) FIG. 13 is an enlarged rear perspective view of the second embodiment of the camming member shown in FIG. 10;

(24) FIG. 14 is an enlarged front perspective view of the second embodiment of the camming member shown in FIG. 10;

(25) FIG. 15 is an enlarged view of the camming member when the door is placed parallel to the panel and the door is lifted vertically upward immediately before being traversed downward to the closed position;

(26) FIG. 16 is a side view of the camming member shown in FIG. 15;

(27) FIG. 17 is an enlarged view of the camming member when the door is in the closed position;

(28) FIG. 18 is a side view of the camming member shown in FIG. 17;

(29) FIG. 19 is a perspective view of the pet crate having a third embodiment of the camming member;

(30) FIG. 20 is an enlarged perspective view of the third embodiment of camming member as the door interacts with the camming member;

(31) FIG. 21 illustrates the door being lifted upward as the door interacts with the ramp of the camming member;

(32) FIG. 22 illustrates the door being traversed to the closed position;

(33) FIG. 23 is an exploded perspective view of a fourth embodiment of a camming system;

(34) FIG. 24 is a perspective view of the camming system shown in FIG. 23 mounted to a door and panel with the door in an opened position;

(35) FIG. 25 is a perspective view of the camming system, door and panel shown in FIG. 24 as the door is being traversed to the closed position;

(36) FIG. 26 is a perspective view of the camming system, door and panel shown in FIG. 25 as the door is being further traversed to the closed position;

(37) FIG. 27 is a front view of the camming system, door and panel immediately prior to the door being dropped down to the closed position;

(38) FIG. 28 is a side view of the camming system, door and panel shown in FIG. 27;

(39) FIG. 29 is a front view of the camming system, door and panel shown in FIG. 27 when the door is dropped down to the closed position;

(40) FIG. 30 is a side view of the camming system, door panel shown in FIG. 29;

(41) FIG. 31 is a perspective view of the first camming member;

(42) FIG. 32 is a front view of the first camming member shown in FIG. 31;

(43) FIG. 33 is a side view of the first camming member shown in FIG. 32;

(44) FIG. 34 is a bottom view of the first camming member shown in FIG. 33;

(45) FIG. 35 is a perspective view of the second camming member;

(46) FIG. 36 is a ride side view of the second camming member shown in FIG. 35;

(47) FIG. 37 is a bottom view of the second camming member shown in FIG. 36;

(48) FIG. 38 is a left side view of the second camming member shown in FIG. 36;

(49) FIG. 39 is a sectional perspective view of the pet crate illustrating a clip for holding the door in the closed position when the clip is in an engaged position for allow the door to be traversed to the opened position when the clip is in a disengaged position;

(50) FIG. 40 is an illustration of the clip in the disengaged position to allow the door to be traversed from the closed position to the opened position; and

(51) FIG. 41 is an illustration of the clip in the engaged position to maintain the door in the closed position.

DETAILED DESCRIPTION

(52) Referring now to the drawings, a camming member 10, 10a, 100, 200, 300 is shown for lifting the door 12 vertically upward as the door 12 is traversed from an opened position (see FIGS. 1, 1A, 10 and 19) to a closed position (see FIGS. 6, 6A, 17 and 22). The door 12 must be vertically raised in order to engage a latch 14 that holds the door 12 in the closed position and against the panel 16. The camming member 10, 10a, 100, 200, 300 slides against the horizontal wire rod 20 of the panel 16, the horizontal wire rod 18 of the door 12 or a second camming member 304 to lift the door 12 upward so that the latch 14 can be engaged. In this manner, the handler need only push the door 12 to the closed position without lifting the door 12 upward. The camming member 10, 10a, 100, 200, 300 is operative to lift the door 12 upward so that the latch 14 may be traversed to the engaged position. This greatly simplifies operation of the latch 14. The handler need not lift the door 12 to close the door 12.

(53) The camming member 10, 10a, 100, 200, 300 may be incorporated into a door 12 and a panel 16 having an opening 22 provided for the ingress or egress of an animal through the opening 22. The panel 16 may be one of a plurality of panels that form a pet crate 24 or may be a panel that is wedged between two walls or may be incorporated into a plurality of panels that form a playpen. The panel 16 and the door 12 may be fabricated from a plurality of horizontal and vertical wire rods 26, 30 and 28, 32. Two or more of the horizontal wire rods 30 of the door 12 may be wrapped around vertical wire rod 28a of the panel 16 so that the door 12 can pivot about the vertical wire rod 28a of the panel 16. The vertical wire rod 28a defines a pivot axis of the door 12.

(54) The latch 14 is shown as being an inverted hook that engages the horizontal wire rod 20 of the panel 16 when the latch 14 is in the engaged position. The latch 14 may also be an upright hook, upright tab or inverted tab as further described in the U.S. patent application Ser. No. 13/045,035 which was filed on Mar. 10, 2011, the entire contents of which is expressly incorporated herein by reference. As discussed in U.S. patent application Ser. No. 13/045,035, to engage or disengage the latch 14, the door must be lifted upward so that the latch clears the respective horizontal wire rod of the panel or door. In order to assist in the lifting of the door when traversing the door from the opened position to the closed position, the camming member 10, 10A, 100, 200, 300 may be incorporated into a door 12 and panel 16 having any one of the inverted hooks, upright clips, inverted tabs or upright tabs as described in U.S. patent application Ser. No. 13/045,035. The following discussion of the camming member 10, 100, 200, 300 has been described in relation to the inverted hook configuration of the latch 14 for the purpose of clarity but the other configurations of the latch 14 are also contemplated.

(55) More particularly, referring now to FIGS. 1-9 and FIGS. 1A-9A, an embodiment of the camming member 10, 10a are shown as two different variants. The variant shown in FIGS. 1-9 forms the camming surface 34 with a camming member 10 which may be attached (e.g., welded to) to the horizontal wire rod 30 of the door 12. In contrast, the camming surface 34a is formed form the distal end portion of the horizontal wire rod 30 of the door 12. The camming member 10, 10a facilitates lift of the door 12 as the door 12 is being rotated from the opened position (see FIGS. 2 and 2A) toward the closed position (see FIGS. 3, 3A and 4, 4A). In particular, in FIGS. 1-9, the camming member 10 is shown as being attached to a portion of the horizontal wire rod 30 wrapped around the vertical wire rod 28a of the panel 16, as shown in FIG. 2. In FIGS. 1A-9A, the camming member 10 is a distal end portion of the horizontal wire rod 30 which is shaped to form the camming surface 34a. The camming member 10, 10a may be attached to the horizontal wire rod 30 of the door 12 in a manner to extend downward or bent or shaped to extend downward. When the door 12 is in the opened position, the camming member 10, 10a need not contact the horizontal wire rod 20 of the panel 16. When the door 12 is rotated slightly inward, as shown in FIGS. 2 and 2A, the camming member 10, 10a may gradually engage the horizontal wire rod 20 of the panel 16 more and more as shown in the progression illustrated in FIGS. 3, 3A and 4, 4A.

(56) The camming member 10 may define a camming surface 34, 34a. The camming surface 34, 34a may be defined as a smooth gradually increasing curved surface. It is the camming surface 34, 34a that contacts the horizontal wire rod 20 of the panel 16 in order to lift the door 12 upward as the door 12 is traversed from the opened position to the closed position. The camming surface 34, 34a initially starts out in line with the horizontal wire rod 30. The horizontal wire rod 30 then gradually moves downward on the camming surface 34, 34a. In this manner, when the door 12 is wide open, the camming member 10 either does not contact the horizontal wire rod 20 of the panel 16 or does not lift the door 12 significantly upward.

(57) As the door 12 is rotated toward the closed position, the horizontal wire rod 20 engages the camming surface 34, 34a further so as to lift the door 12 upward. Referring now to FIGS. 4 and 4A, right before the door 12 reaches the closed position, the distal tip 36, 36a of the camming surface 34, 34a contacts the horizontal wire rod 20 with which the camming surface 34, 34a engages. At this point, the latches 14 that are disposed about the door 12 or panel 16 clear the respective horizontal wire rods 26 of the panel 16 with which the latches 14 will engage.

(58) Referring now to FIGS. 5-9 and 5A-9A, operation of the door 12 as soon as the distal tip 36, 36a of the camming surface 34, 34a passes the horizontal wire rod 20 of the panel is shown. In particular, once the distal tip 36, 36a of the camming surface 34, 34a passes the horizontal wire rod 20, the door 12 is free to fall downward in the direction of arrow 38 (see FIGS. 8 and 8A). Once the door 12 falls downward, the latches 14 are traversed to the engaged position so that the pet behind the door 12 cannot merely push the door 12 open. The pet must lift the door 12 upward then push outwards in order to open the door 12. In order to prevent the pet from lifting and pushing the door 12 open, a lock 40 may be used to prevent further movement of the door 12. In FIGS. 8 and 9, the camming surface 34 of the camming member 10 has a vertical surface 42 after the distal tip 36. A gap 44 exist between the vertical surface 42 of the camming member 10 and a rear surface 46 of the vertical wire rod 32 of the door 12. In FIGS. 8a and 9A, a vertical plane extending vertically from the end of the distal tip 36a defines a gap 44a with the rear surface 46 of the vertical wire rod 32 of the door 12. After the distal tip 36 passes the horizontal wire rod 20, the horizontal wire rod is received into the gap 44, as shown in FIGS. 9 and 9A to allow the door 12 to move downward so that the latches 14 may be traversed to the engaged position.

(59) In the variant shown in FIGS. 1-9, the camming member 10 may be attached to the portion of the horizontal wire rod 30 that is wrapped around the vertical wire rod 28a of the panel 16 by various means known in the art. By way of example and not limitation, the camming member 10 may be welded to the portion of the horizontal wire rod 30 that is wrapped around the vertical wire rod 28a of the panel 16. In the alternate variant shown in FIGS. 1A-9A, the distal end portion of the horizontal wire rod 30 is shaped and bent to form the camming surface 34a by various means known in the art.

(60) Referring now to FIGS. 10-18, a second embodiment of the camming member 100 is shown. The camming member 100 may be attached to the horizontal wire rod 30 of the door 12 and the vertical wire rod 28a of the panel 16. In particular, the camming member 100 may have first and second mounting members 150, 152 (see FIG. 13). The first mounting member 150 may extend horizontally outward and have an aperture 154 that is sized and configured to receive the horizontal wire rod 30 of the door 12. In the embodiment shown in FIGS. 1-9 and 1A-9A, each of the horizontal wire rods 30 of the door 12 has a portion that is wrapped around the vertical wire rod 28a of the panel 16. However, in this second embodiment of the camming member 100, the horizontal wire rod 30 that engages the camming member 100 is not wrapped around the vertical wire rod 28. Instead, the horizontal wire rod 30 protrudes straight into the aperture 154 of the first mounting member 150. The horizontal wire rod 30 of the door 12 may be retained within the aperture 154 by way of a friction fit therebetween or with an adhesive or other welding procedure. The second mounting member 152 is perpendicular to the first mounting member 150. Moreover, the second mounting member 152 may have a C-channel slot 156 that extends vertically upward. The slot 156 receives the vertical wire rod 28a of the panel 16. In particular, the slot 156 may have an entrance defining a width 157 which is smaller than an outer diameter of the wire rod 28a. The slot 156 may have an inner diameter 159 which is equal to or slightly larger (e.g., 0.001 to 0.10 inch) greater than an outer diameter of the wire rod 28a. In this way, the second mounting member 152 may be snapped over the vertical wire rod 28a. Also, the vertical wire rod 28a rotates within the slot 156 as the door is being rotated between closed and opened positions.

(61) The camming member 100 may also have a camming section 158. The camming section 158 may also have a camming surface 134. The camming surface 34 may be defined as a smooth gradually increasing curved surface. As the door 12 is rotated from the opened position (see FIG. 10) to the closed position (see FIGS. 12, 17 and 18), the camming surface 134 engages the horizontal wire rod 20 of the panel 16. As the door 12 approaches the panel 16, the horizontal wire rod 20 of the panel 16 rides on a distal tip 136 of the camming surface 134. At this point, the door 12 is lifted as high as it will go with the camming member 100 and the latches 14 are in position to be traversed to the engaged position. The camming member 100 may be fabricated from a hard plastic material through injection molding or 3-D printing.

(62) Referring now to FIGS. 15-18, once the horizontal wire rod 20 passes a distal tip 136 of the camming surface 134, the door 12 is allowed to fall downward in the direction of arrow 160 until the door 12 is in the closed position and the latches 14 are in the engaged position. After the distal tip 136 of the camming surface 134, the camming section 158 has a vertical surface 142 that defines a gap 144 between the vertical surface 142 of the camming section 134 and a rear surface 46 of the vertical wire rod 32. The horizontal wire rod 20 is received into the gap 144, as shown in FIGS. 17 and 18.

(63) Referring now to FIGS. 19-22, the third embodiment of the camming member 200 is shown. The camming member 200 may be fixed to the panel 16. In FIG. 19, the camming member 200 is shown as being fixed to a lower portion of the panel 16. The camming member 200 may be fabricated from a wire rod and be welded to the wire rods of the panel. The camming member 200 may be disposed anywhere about the opening 22 in the panel 16. Preferably, the camming member 200 is disposed at the opposite side of the pivot axis of the door 12. The camming member 200 slides against a horizontal wire rod 18 of the door 12 so as to lift the door 12 upward as the door 12 is pivoted from the opened position to the closed position so that the latches 14 may be traversed to the engaged position as shown FIG. 22.

(64) When the door 12 is in the opened position, the door 12 is not lifted upward, as shown in FIGS. 19 and 20. When the door 12 is traversed toward the closed position, or toward the panel 16 by rotating the door 12 about its pivot axis, the horizontal wire rod 18 of the door 12 engages a ramp 262 of the camming member 200. As the door 12 moves closer to the panel 16, the door 12 moves upward in the direction of arrow 260, as shown in FIG. 21. At this point, the latch 14 is in position to be traversed to the engaged position as shown in FIG. 22. As the door 12 moves closer to the panel 16, the ramp section 262 is connected to an inverted ramp 264 that allows the door 12 to move downward in direction of arrow 266 at which point the latches 14 are in the engaged position. The door 12 is now in the closed position.

(65) Referring now to FIGS. 23-30, a fourth embodiment of a camming system 300 is shown. The camming system 300 is shown as being attached at one point on vertical wire rod 28a. However, it is also contemplated that the camming system 300 may be disposed at two or more locations on the vertical wire rod. The camming system 300 comprises a first camming member 302 fixedly attached to the door 12 and a second camming member 304 fixedly attached to the panel 16. Each of the first and second camming members 302, 304 has a camming surface 334a, b which slide and mate with each other during rotation of the door 12 about the vertical wire rod 28a in order to smoothly lift the door 12 from a lower position (see FIG. 24) to an elevated position (see FIGS. 26-28) then back down to a lowered position (see FIGS. 29-30) to engage the latch 14 disposed at one or more locations about the periphery of the door 12 and/or periphery of the opening 22 formed in the panel 16.

(66) The first camming member 302 may have two different slots 366a, b, as shown in FIGS. 23 and 32-34. The slot 366a receives the vertical wire rod 28a of the panel 16. The slot 366b receives the horizontal wire rod 30 of the door 12. As the door 12 rotates about the vertical wire rod 28a of panel 16, the first camming member 302 rotates in sync with the door 12. The slot 366a may have an entrance having a width 368 which is greater than an outer diameter of the wire rod 28a. The slot 366a may converge to a choke point having a width 370 that is smaller than the outer diameter of the wire rod 28a. The slot 366a may have a cylindrical cavity having an inner diameter 372 (See FIGS. 23 and 34) which is greater than the outer diameter of the vertical wire rod 28a. In this manner, the first camming member 302 may be slid over the vertical wire rod 28a and snapped thereover so that the first camming member 302 can rotate about the vertical wire rod 28a. The other slot 366b may be sized and configured to loosely fit the horizontal wire rod 30 of the door 12. In this regard, the slot 366b may have an entrance that does not narrow down to a choke point as in the slot 366a. The first camming member 302 may be lifted up and down to remove the horizontal wire rod 30 of the door 12 or reinsert the horizontal wire rod 30 of the door 12 back into the slot 366b. The slots 366a, b may be oriented perpendicular to each other for receiving the vertical wire rod 28a and the horizontal wire rod 30 the door 12.

(67) In order to hold the first camming member 302 in position so that the horizontal wire rod 30 of the door 12 is maintained within the slot 366b, a spacer 374 may be disposed on the vertical wire rod 28a and snapped between the first camming member 302 and a horizontal wire rod 30 of the door 12, as shown in FIG. 27. The spacer 374 may have an entrance that narrows down to a choke point similar to the slot 366a so that the spacer 374 may be snapped over the vertical wire rod 28a and rotatably secured thereto. Preferably, a height 376 of the spacer 374 is sized so that the spacer 374 pushes the first camming member 302 so that the slot 366b is pushed over or maintained over the horizontal wire rod 30 of the door 12. Alternatively or in addition to the spacer 374, the first camming member 302 may be held in place by configuring the slot 366b in a similar fashion to the slot 366a so that the slot 366b snaps over the horizontal wire rod 30 of the door 12.

(68) The horizontal wire rods 30 may extend and be wrapped around the vertical wire rod 28a so that the door 12 can be rotated about the vertical wire rod 28a. The horizontal wire rod 30 of the door 12 that is received into the slot 366b does not wrap around the vertical wire rod 28a. Rather, the horizontal wire rod 30 may be received into the slot 366b and terminate there within. In FIG. 23, the horizontal wire rod 30 is being shown as being truncated to terminate within the slot 366b.

(69) The second camming member 304 may be fixedly attached to the panel 16. The second camming member 304 may also have two slots 378a, b. (see FIGS. 23 and 35-38). The slots 378a, b may be oriented perpendicular to each other for receiving the vertical wire rod 28a and the horizontal wire rod 26 of the panel 16. The slot 378a may have an entrance that starts out wider than the outer diameter of the vertical wire rod 28 but chokes to a point that is narrower than the vertical wire rod 28a. The slot 378a may have a cylindrical inner cavity that receives the vertical wire rod 28a and has an inner diameter that is greater than the outer diameter of the vertical wire rod 28a. In this manner, the second camming member 304 may be slid over the vertical wire rod 28a and snap onto the vertical wire rod 28a in order to retain the second camming member 304 to the vertical wire rod 28a. Additionally, the other slot 378b of the second camming member 304 may have a similar configuration to the slot 378a in that the slot 378b has an entrance that starts out wider than an outer diameter of the horizontal wire rod 26 of the panel 16 but narrows down to a choke point that is narrower than the outer diameter of the horizontal wire rod 26 of the panel 16. The slot 378b has an inner cavity that ultimately receives the horizontal wire rod 26 of the panel 16. This configuration allows the slot 378b to snap over the horizontal wire rod 26 of the panel 16. Additionally, the horizontal wire rod 26 of the panel may extend through the second camming member 304.

(70) The first camming member 302 imposes a downward force on the second camming member 304. As such, the second camming member 304 does not require a spacer 374 as is utilized to hold the first camming member 302 in position with respect to the door 12.

(71) The camming surfaces 334a, b may contact each other so that the camming surfaces 334a, b slide against each other during rotation of the door. The first and second camming members 302, 304 may be fabricated from a material that has a low coefficient of friction in order to facilitate rotational movement of the door 12 about the vertical wire rod 28a and lifting of the door 12. The camming surfaces 334a, b may also be coated or embedded with an anti-friction material to further facilitate rotational movement of the door 12 about vertical wire rod 28a. The camming surfaces 334a, b may comprise a complex compound curved that mates with each other throughout the entire rotation of the door 12 except when the door 12 is in the closed position and dropped down to the lowered position. The width of the camming surface 334a may be equal to the width of the camming surface 334b. Moreover, at least half of the width of the camming surface 334a may be in sliding contact with the width.

(72) When the door 12 is rotated from the opened position (see FIG. 24) to the closed position (see FIGS. 29 and 30), the camming surfaces 334a, b slide against each other in order to lift the door 12 upward in the direction of arrow 380 due to the curved configuration of the camming surfaces 334a, b. As the door 12 approaches the panel 16, a distal tip 382 of the first camming member 302 slides against the camming surface 334b of the second camming member 304. The distal tip 382 of the first camming member 302 continues to slide against the camming surface 334b of the second camming member 304 until the distal tip 382 reaches an end 384 of the camming surface 334b of the first camming member 304. This position is also shown in FIGS. 27 and 28. When the door 12 is rotated further, the distal tip 382 falls over the end 384 of the camming surface 334b to bring the door 12 downward so that the latch 14 may be engaged. A downward protruding portion 386 of the first camming member 302 is now disposed behind the vertical wall 388 of the second camming member 304 to prevent the door 12 from rotating back to the opened position. Moreover, the latch 14 prevents the door 12 from rotating back to the opened position. In order to rotate the door 12 back to the opened position, the door 12 must be lifted vertically upward in order to disengage the latch(es) 14.

(73) Each of the systems 10, 100, 200 and 300 described herein may be utilized alone or in combination with each other.

(74) Referring now to FIGS. 39-41, a clip 400 is shown. The clip 400 may be pivotally attached to a horizontal wire rod 26 of the panel 16. The clip 400 may be about ? inch to about 1? inches wide and fabricated from a material that allows the clip 400 to bend so that the clip 400 may be rotated about the horizontal wire rod 26 of the panel in the direction of arrow 404 and engage and disengage the wire rod 30 of the door 12. The clip 400 may be attached to the horizontal wire rod 30 of the door 12 when the door 12 is laid against the panel 16 and traversed to a down position. This keeps the door 12 closed. To open the door, the clip 400 is rotated to the disengaged position by disengaging the clip 400 from the horizontal wire rod 30 of the door 12. The door is then traversed to the opened position.

(75) To engage the clip 400 to the horizontal wire rod 30 of the door 12, the clip 400 is rotated upward in the direction of arrow 404 shown in FIG. 40. A front lip 406 of the clip 400 contacts the horizontal wire rod 30 of the door 12. In order to latch the clip 400 to the horizontal wire rod 30 of the door 12, as shown in FIG. 41, the user must push the clip 400 in the direction of arrow 408 (see FIG. 40). In doing so, the clip 400 may bend so that the front lip 600 reaches over the horizontal wire rod 30 of the door 12. When the front lip 400 passes the horizontal wire rod 30 of the door 12, the clip 400 springs back to its normal position and hugs the horizontal wire rod 30, as shown in FIG. 41. Since the clip 400 is pivotally attached to the horizontal wire rod 26 of the panel 16, the door 12 cannot be traversed upward in order to unlock the door 12 and traverse the door to the opened position.

(76) To traverse the door 12 to the opened position, the user grips the front lip 406 and lifts upward in the direction of arrow 410 so that the front lip 406 rides over the horizontal wire rod 30 to be released from the horizontal wire rod 30 of the door 12. The door 12 can now be traversed upward and laterally rotated to the opened position.

(77) The clip 400 shown in FIGS. 39-41 was rotatably attached to the horizontal wire rod of the panel and removably attachable to the horizontal wire rod of the door. However, it is also contemplated that the clip 400 may be rotatably attached to the horizontal wire rod of the panel and removably attachable to the horizontal wire rod of the panel.

(78) The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including various ways of mounting or attaching the camming members 10, 100, 200. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.