CONCRETE EMBEDDABLE CORBEL SYSTEM

Abstract

A concrete embeddable mount for a ledge is provided having a plate with a plurality of keyhole slots therein, four anchors extending from the back of the plate, for embedding the mount in a precast concrete component, wherein the anchors define vertices of a convex quadrilateral, and a fifth anchor extending from the back of the plate, wherein the fifth anchor is positioned within the convex quadrilateral defined by the four anchors. The invention further includes a ledge having a back plate and a perpendicular base extending from the back plate, wherein the back plate has a plurality of rearward extending studs aligned to engage the keyhole slots in the mount plate. Together, the mount and the ledge create a corbel system.

Claims

1. A mount for a ledge, which together form a corbel system, comprising: (a) a plate having a front, a back, a top edge, a bottom edge, a first side edge, a second side edge, and first and second keyhole slots extending through the plate from the front to the back; (b) (i) a first anchor having an end attached to the back of the plate at a first point of attachment and extending outward from the back of the plate, (ii) a second anchor having an end attached to the back of the plate at a second point of attachment and extending outward from the back of the plate, (iii) a third anchor having an end attached to the back of the plate at a third point of attachment and extending outward from the back of the plate, and (iv) a fourth anchor having an end attached to the back of the plate at a fourth point of attachment and extending outward from the back of the plate, wherein the first, second, third and fourth points of attachment define the vertices of a convex quadrilateral; and (c) a fifth anchor having an end attached to the back of the plate at a fifth point of attachment and extending outward from the back of the plate, wherein the fifth point of attachment is positioned within a perimeter of the convex quadrilateral.

2. The mount of claim 1, wherein the first and second keyhole slots are positioned within the perimeter of the convex quadrilateral.

3. The mount of claim 2, wherein the fifth point of attachment of the fifth anchor is laterally positioned between the first and second keyhole slots.

4. The mount of claim 2, wherein the plate further comprises third and fourth keyhole slots positioned within the perimeter of the convex quadrilateral, and the fifth anchor is laterally positioned between the first and second keyhole slots and the third and fourth keyhole slots.

5. The mount of claim 1, wherein the convex quadrilateral defines a vertex centroid, and the fifth point of attachment of the fifth anchor is positioned between the top of the plate and the vertex centroid.

6. The mount of claim 1, wherein the plate is rectangular, and the convex quadrilateral is rectangular.

7. The mount of claim 1, wherein the convex quadrilateral has interior angles that are each from 60 to 120.

8. The mount of claim 1, wherein the convex quadrilateral has interior angles that are each from 70 to 110.

9. The mount of claim 1, wherein the convex quadrilateral has interior angles that are each from 80 to 100.

10. A corbel system for supporting a beam, comprising: (a) an upright concrete component having a vertical face; (b) a mount having a plate positioned parallel to the face of the concrete component and having a front, a back, a top edge, a bottom edge, a first side edge, a second side edge, and first and second keyhole slots extending through the plate from the front to the back, (i) a first anchor having an end attached to the back of the plate at a first point of attachment and extending outward from the back of the plate and embedded in the concrete component, (ii) a second anchor having an end attached to the back of the plate at a second point of attachment and extending outward from the back of the plate and embedded in the concrete component, (iii) a third anchor having an end attached to the back of the plate at a third point of attachment and extending outward from the back of the plate and embedded in the concrete component, (iv) a fourth anchor having an end attached to the back of the plate at a fourth point of attachment and extending outward from the back of the plate and embedded in the concrete component, wherein the first, second, third and fourth points of attachment define the vertices of a convex quadrilateral, and (v) a fifth anchor having an end attached to the back of the plate at a fifth point of attachment and extending outward from the back of the plate and embedded in the concrete component, wherein the fifth point of attachment is positioned within a perimeter of the convex quadrilateral; and (c) a ledge having (i) a back plate aligned parallel to the mount plate, with first and second studs engaging the first and second keyholes of the mount; (ii) a base for supporting the beam, wherein the base is attached to the back plate; and (iii) a gusset attached to the back plate and the base.

11. The corbel system of claim 10, wherein the first and second keyhole slots are positioned within the perimeter of the convex quadrilateral.

12. The corbel system of claim 11, wherein the fifth point of attachment of the fifth anchor is laterally positioned between the first and second keyhole slots.

13. The corbel system of claim 11, wherein the mount plate further comprises third and fourth keyhole slots positioned within the perimeter of the convex quadrilateral, and the fifth anchor is laterally positioned between the first and second keyhole slots and the third and fourth keyhole slots.

14. The corbel system of claim 10, wherein the convex quadrilateral defines a vertex centroid, and the fifth point of attachment of the fifth anchor is positioned between the top of the plate and the vertex centroid.

15. The corbel system of claim 10, wherein the convex quadrilateral has interior angles that are each from 70 to 110.

16. The corbel system of claim 10, wherein the first, second, third, fourth and fifth anchors are headed rebar.

17. The mount of claim 1, wherein the first, second, third, fourth and fifth anchors are headed rebar.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a perspective view of the upper front of the mount.

[0016] FIG. 2 is a side view of the mount.

[0017] FIG. 3 is a front view of the mount.

[0018] FIG. 4 is a side view of the ledge.

[0019] FIG. 5 is a front view of the ledge,

[0020] FIG. 6 is an exploded perspective view of a concrete component having the mount embedded therein, the ledge and a beam supported by the ledge.

[0021] FIG. 7 is a side view of the assembled corbel system incorporated in the concrete component, with the beam supported by the ledge.

[0022] FIG. 8 is a perspective view of the upper front of the mount having six keyhole slots.

[0023] FIG. 9 is a back view of the mount shown in FIG. 8.

[0024] FIG. 10 is a side view of the ledge having six studs positioned to engage the six keyhole slots in the mount of FIGS. 8 and 9.

[0025] FIG. 11 is a front view of the ledge of FIG. 10.

DETAILED DESCRIPTION OF THE INVENTION

[0026] Without intending to limit the scope of the invention, the preferred embodiments and features are hereinafter set forth. All of the United States patents and published patent applications cited in the specification are incorporated herein by reference.

[0027] Referring to FIG. 1-3, mount 1 has plate 2, front 3, back 4, top edge 5, bottom edge 6, side edge 7 and opposite side edge 8. Anchors 9a, 9b, 9c and 9d are attached to the back 4 of plate 2 at points of attachment 10a, 10b, 10c and 10d, respectively. Opposite the points of attachment, each of anchors 9a, 9b, 9c and 9d is provided with a foot, identified as 11a, 11b, 11c and 11d, respectively, to increase the pull out force required to remove the anchors, when the anchors are embedded in a concrete component.

[0028] The four anchors, 9a, 9b, 9c and 9d, define a convex quadrilateral Q, having vertices 12a, 12b, 12c and 12d and a perimeter 13. Bimedians 14 and 15 (line segments joining the midpoints of opposite sides of quadrilateral) intersect to define the vertex centroid VC of quadrilateral Q. In FIG. 3, the vertices of the quadrilateral Q are shown as having angles of approximately 90. It can be understood that the points of attachment 10a, 10b, 10c and 10d of the anchors 9a, 9b. 9c and 9d may be varied from a rectangular, to define other quadrilateral configurations, such as a trapezium, trapezoid, parallelogram, kite or rhombus. By way of example, the interior angles of the quadrilateral may vary from 80 to 100, 70 to 110, or even 60 to 120.

[0029] A fifth anchor, anchor 16 has a point of attachment 17 to back 4 of plate 2. Point of attachment 17 is located within the perimeter 13 of quadrilateral Q. Anchor 16 is provided with a foot 18, opposite point of attachment 17. In the embodiment of the invention illustrated, point of attachment 17 of anchor 16 is located on bimedian 15. It is believed to be advantageous to counteract the tendency of plate 2 to distort when supporting a ledge to locate point of attachment 17 above bimedian 14, that is, between bimedian 14 and top edge 5.

[0030] As shown in FIGS. 1 and 3, plate 2 is provided with keyholes 19, 20, 21 and 22, which extend through plate 2 from front 3 to back 4. Each of keyholes 19, 20, 21 and 22 is characterized by a wide end 23a, 23b, 23c and 23d and a narrow end, 24a, 24b, 24c and 24d, respectively. In the embodiment of the invention illustrated, keyholes 19 and 20 are positioned in plate 2 within the perimeter 13 of quadrilateral Q. Additionally, keyholes 19 and 20 may be positioned above bimedian 14, that is, between bimedian 14 and top edge 5 of plate 2. The point of attachment 17 of anchor 16 is positioned laterally between keyholes 19 and 20. Keyholes 21 and 22 may also be positioned within perimeter 13 of quadrilateral Q, and keyholes 21 and 22 may be positioned below bimedian 14, that is, between bimedian 14 and the bottom edge 6 of plate 2. The point of attachment 17 of anchor 16 is positioned laterally between keyholes 21 and 22. Also within the scope of the present invention is the possibility of locating keyholes 21 and 22 outside of perimeter 13 of quadrilateral Q. For example, keyholes 21 and 22 could be positioned closer to bottom edge 6 of plate 2, or anchors 9c and 9d could be positioned closer to top edge 5 of plate 2, or both.

[0031] Referring to FIGS. 4 and 5, ledge 30 has back plate 31, with studs 32a, 32b, 32c and 32d, attached to plate 31. Each of studs 32a, 32b, 32c and 32d is provided with a head 33a, 33b, 33c and 3d, and a shaft 34a, 34b, 34c and 34d, respectively. In the embodiment illustrated, shafts 34a, 34b, 34c and 34d extend through back plate 31, for additional strength.

[0032] Ledge 30 has base 35 attached to back plate 31, for supporting a horizontal beam or other component of a structure. Back plate 31 and base 35 can be a unitary part, such as angle iron. Generally, base 35 and back plate 31 will be at a right angle (90), but the angle of orientation may vary, as required, for a particular situation. Gusset 36 joins back plate 31 and base 35 for additional support. Gusset 36 may be a single plate attached at a 45 angle between back plate 31 and base 35. Alternatively, base 35 may be supported by multiple gussets connecting base 35 to back plate 31. By way of further example, base 35 may be supported by the rectangular sides of a steel box, as is known in the art.

[0033] FIGS. 6 and 7 show a concrete component 40 of a structure, with mount 1 embedded therein, with front 3 of plate 2 parallel to and substantially flush with vertical face 41 of component 40. A void in the concrete is provided behind each of keyholes 19, 20, 21 and 22, by use of a suitable block out form or recess member at the time the concrete component is cast with mount 1 embedded therein, as is known in the art. Studs 32a, 32b, 32c and 32d extending outward from back plate 31 of ledge 30 engage the corresponding keyholes in plate 2 of mount 1. Beam 42 is supported by base 35 of ledge 30.

[0034] Referring to FIGS. 8 and 9, an embodiment of the invention having six keyhole slots and six anchors is disclosed. Mount 50 has plate 51, front 52, back 53, top edge 54, bottom edge 55, side edge 56 and opposite side edge 57. Anchors 58a, 58b, 58c and 58d are attached to the back 53 of plate 51 at points of attachment 59a, 59b, 59c and 59d, respectively. Opposite the points of attachment, each of anchors 58a, 58b, 58c and 58d is provided with a foot, identified as 60a, 60b, 60c and 60d, respectively, to increase the pull out force required to remove the anchors, when the anchors are embedded in a concrete component.

[0035] The four anchors, 58a, 58b, 58c and 58d, define a convex quadrilateral Q, having vertices 61a, 61b, 61c and 61d and a perimeter 62. Bimedians 63 and 64 (line segments joining the midpoints of opposite sides of quadrilateral) intersect to define the vertex centroid VC of quadrilateral Q. In FIG. 9, the vertices of the quadrilateral Q are shown as having angles of approximately 90. It can be understood that the points of attachment 59a, 59b, 59c and 59d of the anchors 58a, 58b, 58c and 58d may be varied from a rectangular, to define other quadrilateral configurations, such as a trapezium, trapezoid, parallelogram, kite or rhombus. By way of example, the interior angles of the quadrilateral may vary from 80 to 1000, 70 to 110, or even 60 to 120.

[0036] A fifth anchor, anchor 65 has a point of attachment 66 to back 53 of plate 51. Point of attachment 66 is located within the perimeter 62 of quadrilateral Q. Anchor 65 is provided with a foot 67, opposite point of attachment 66. In the embodiment of the invention illustrated, point of attachment 66 of anchor 65 is located above bimedian 64, that is, between bimedian 64 and top edge 54, to counteract the tendency of plate 51 to distort when supporting a ledge.

[0037] Mount 50 is also provided with a six anchor, anchor 68, having a point of attachment 69 to back 53 of plate 51. Point of attachment 69 is located within the perimeter 62 of quadrilateral Q. Anchor 68 is provided with a foot 70, opposite point of attachment 69. In the embodiment of the invention illustrated, point of attachment 69 of anchor 68 is located above bimedian 64, that is, between bimedian 64 and top edge 54, to counteract the tendency of plate 51 to distort when supporting a ledge.

[0038] As shown in FIGS. 8 and 9, plate 51 is provided with keyholes 71, 72, 73, 74, 75 and 76, which extend through plate 51 from front 52 to back 53. Each of keyholes 71, 72, 73, 74, 75 and 76 is characterized by a wide end, 77a, 77, 77c, 77d, 77e and 77f, and a narrow end, 78a, 78b, 78c, 78d, 78e and 78f, respectively. In the embodiment of the invention illustrated, keyholes 71, 72 and 73 are positioned in plate 51 within the perimeter 62 of quadrilateral Q. Additionally, keyholes 71, 72 and 73 may be positioned above bimedian 64, that is, between bimedian 64 and top edge 54 of plate 51. The point of attachment of anchor 65 is positioned laterally between keyholes 71 and 72. The point of attachment of anchor 68 is positioned laterally between keyholes 72 and 73. Keyholes 74, 75 and 76 may also be positioned within perimeter 62 of quadrilateral Q, and keyholes 74, 75 and 76 may be positioned below bimedian 64, that is, between bimedian 44 and the bottom edge 55 of plate 51. The point of attachment 66 of anchor 65 may be positioned laterally between keyholes 74 and 75. The point of attachment 69 of anchor 68 may be positioned laterally between keyholes 75 and 76. Also within the scope of the present invention is the possibility of locating any of keyholes 71, 72, 73, 74, 75 and 76 outside of perimeter 62 of quadrilateral Q. For example, keyholes 74, 75 and 76 could be positioned closer to bottom edge 55 of plate 51, or anchors 58a and 58d could be positioned closer to top edge 54 of plate 51, or both.

[0039] Mount 50 may be embedded in a concrete component, with plate 51 parallel to and substantially flush with a vertical face of the concrete component, as shown in FIGS. 6 and 7 with regard to mount 1. Additionally, ledge 80 may engage mount 50, as shown in FIGS. 6 and 7 with regard to mount 1 and ledge 30.

[0040] Referring to FIGS. 10 and 11, ledge 80 has back plate 81, with studs 82a, 82b, 82c, 82d, 82e and 82f, attached to plate 81. Each of studs 82a, 82b, 82c, 82d, 82e and 82f is provided with a head 83a, 83b, 83c, 83d, 83e and 83f and a shaft 84a, 84b, 84c, 84d, 84e and 84f, respectively. In the embodiment illustrated, shafts 84a, 84b, 84c, 84d, 84e and 84f extend through back plate 81, for additional strength.

[0041] Ledge 80 has base 85 attached to back plate 31, for supporting a horizontal beam or other component of a structure. Base 85 and back plate 31 may be a unitary part, such as angle iron. Generally, base 85 and back plate 81 will be at a right angle (90), but the angle of orientation may vary, as required, for a particular situation. Gussets 86 and 87 join back plate 81 and base 85 for additional support. Gussets 86 and 87 may be attached at a 45 angle between back plate 81 and base 85.

[0042] There are, of course, many alternative embodiments and modifications, which are intended to be included within the following claims.