JOIST HANGER/BRACKET

Abstract

A hanger for concrete walls, the joist hanger comprising a flat plate having a front surface and a back surface. A truss chord bracket or hanger that supports the bottom chord of a truss at the side of a building.

Description

BACKGROUND

Joist hangers are not new to the art. However, joist hangers that are imbedded into poured concrete for the purpose of retaining the joint support, increasing the strength of the overall structure are. Insulated concrete forms can be built quickly and efficiently. The present device improves the ability to increase efficiency. Prior art devices are limited in their application.

In U.S. Pat. No. 8,051,620 entitled, “Joist Hanger for ICF Wall System” issued to Kittlitz on Nov. 8, 2011 teaches a hanger for supporting joists or beams in insulated concrete formwork (ICF) systems that has two parallel side plates having inner and outer sections, plus an L-shaped support, member comprising a horizontal leg extending between the lower edges of the outer section of the side plates, and an upward-extending vertical leg which demarcates the inner and the outer side plate sections.

The inner sections of the side plates are passed through slits in one insulation panel of the ICF wall forming system, until the support's vertical leg abuts the outer face of the insulation panel, leaving the side plate inner section extending partially into the formwork cavity. The joist or beam to be supported may be set on the horizontal leg of the support member either before or after the concrete wall is cast.

Preferably, a cut out is made in the insulation panel behind the vertical leg of the support members to allow concrete to flow against the vertical leg and the supported joist or beam is cut for a close fit against the vertical leg such that external loads on the wall can pass into the joist or beam by direct compression.

The Kittlitz patent is limited by the required effort to thread the re bar through the opening in the part of the hanger that is within the forms. The present device allows for a quicker resolution by allowing the re bar to rest in the groove of the joist hanger portion imbedded within the poured wall and between the foam forms. The present device also has a plate between the hanger portion and the foam form for greater stability.

In U.S. Pat. No. 6,845,954 entitled, “Pre-manufactured Joist and Beam Support for Concrete Walls”, issued to Harber on Jan. 25, 2005 teaches a pre-manufactured joist hanger and beam hanger support for concrete walls to be poured, particularly those utilizing a permanent, secondary non-structural material as forms essentially adjacent to the concrete, comprised of a U-shaped rigid member, rigid anchor members extending therefrom so as to cause a sufficiently large hole to be created in the secondary material in which the support is inserted and which essentially does not interfere with the flow of concrete being poured.

The Harber patent is limited, in that, it does not tie to any other structural item. It does not connect to any re-bar within the poured concrete and relies on the anchors to hold the compression weight to support the joist or beam. The present device allows for the quick connection of the rebar to the joist hanger to transfer even more of the compression weight into the rebar and then the poured concrete giving it greater stability and a greater utility.

THE DISCLOSURE

The present device is a hanger for concrete walls, the joist hanger comprises a flat plate. The flat plate has a front surface and a back surface. There is a re-rod hanger fixedly mounted on the back surface. There is a joist holder fixedly mounted on the front surface, in alignment with, and opposite the re-rod hanger.

Another embodiment of the hanger comprises a hanger for concrete walls. This hanger comprises a unitary metal U-shaped truss support that has a first side that has a bottom edge, and a second side that has a bottom edge. The first side has a downwardly extending first leg unitarily connected to the bottom edge of the first side. The second side has a downwardly extending second leg unitarily connected to the bottom edge of the second side. Each of the downwardly extending legs has a plurality of barbs extending therefrom.

Another embodiment is a truss-chord building bracket that comprises a first flat panel that has a first side edge, a second side edge, a first end edge and a second end edge. The flat panel has at least one through opening near the first end edge and at least one through opening near the second end edge. There is a second flat panel that has a first side edge. The second flat panel is integrally attached by the first side edge to the first side edge of the first flat panel such that the second flat panel is located vertically relative to the first flat panel. The second flat panel has a plurality of openings therethrough. There is also a third flat panel that has a first side edge. The third flat panel is integrally attached by the first side edge to the second side edge of the second flat panel such that the third flat panel is located vertically relative to the second flat panel. The third flat panel has a plurality of first openings therethrough. The third flat panel has a plurality of punched openings therethrough wherein, the material that is punched forms extensions that are perpendicular to a back wall of the third flat panel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 a full side view of the joist hanger within a poured wall.

FIG. 2 is a full top view of the joist hanger.

FIG. 3 is a full front view of the joist hanger.

FIG. 4 is a full side view of the joist hanger.

FIG. 5 is a full view of the joist/truss hanger.

FIG. 6 is a full view of another embodiment of a joist/truss hanger for the end cap of a poured wall.

FIG. 7 is a full side view in a poured wall of the second embodiment.

FIG. 8 is a full top view of the second embodiment.

FIG. 9 shows the second embodiment from one end.

FIG. 10 is a full view of the second embodiment.

FIG. 11 is a full view of the third embodiment.

FIG. 12 is a full top view of the third embodiment.

FIG. 13 is a full frontal view of the third embodiment.

FIG. 14 is a full side view of the third embodiment.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the joist hanger 2 from the side within a poured wall 36. The flat plate 4 has a re-bar hanger 10 extending rearwardly from the back surface 8. The front surface 6 has the joist holder 12 extending forwardly from that front surface 6. The joist holder 12 consists of a first side 22 and a second side 24. The joist holder 12 also has a bottom 26 where a joist rests. Both the first side 22 and the second side 24 have openings therethrough 28 to secure the joist 38.

The back surface 8 of the flat plate 4 has the distal end 16 of the re-bar hanger 10 extending from it. The near end 14 of the re-bar hanger 10 has a first U-shaped portion 18 that supports re-bar 40. It has been discovered that the re-bar 40 can simply be placed in the first U-shaped portion 18 and the poured concrete 32 will retain it in place which adds to the structural integrity by receiving and transferring compression weight. There is a second U-shaped portion 20 that allows for extra reinforcement when a second, re-bar 40 is added. This second, re-bar 40 must be tied down with re-bar ties 34 to prevent movement of the re-bar 40 prior to the concrete pour.

The hanger 2 fits securely through an opening in the foam form 30. The flat plate 4 prevents movement during the pour process and reduces any leakage that may occur during the pouring or the concrete 32.

FIG. 2 shows the joist hanger 2 from the top. The joist hanger 4 is on the front surface 6 of the flat plate 4. The re-bar hanger 10 is on the back surface 8 of the flat plate 4. The re-bar hanger 10 is slightly angled outwardly as it runs from its distal end 16 to the near end 14 where the first U-shaped portion 18 and the second U shaped portion 20 are located. It has been discovered that the wider near end 14 gives the joist hanger 2 more stability and reduces the likelihood that it would pull out of the concrete due to compression stress.

FIG. 3 shows the joist hanger 2 from the front. The flat plate 4 has a front surface 6 that has the joist holder 12 extending therefrom. The joist holder 12 has a first side 22 and a second side 24. The joist holder 12 also has a bottom where the joist 38 rests.

FIG. 4 shows the joist hanger 2 from side. The flat plate 4 has a front surface 6 and a back surface 8. The back surface 8 shows the re-bar hanger 10 extending from it. The front surface 6 shows the joist holder 12 extending from it. The near end 14 of the re-bar hanger 10 contains the first U-shaped portion 18 and the second U-shaped portion 20 for accepting re-bar 40.

The front surface 6 shows the joist holder 12 extending from it. The joist, holder 12 has a first side 22 and a second side 24. The joist holder also has a bottom 26. Both the first side 22 and the second side 24 have openings 28 that allow for securing a joist 38 to the joist holder 12.

FIG. 5 shows the joist/truss hanger 2. The flat plate 4 has a front surface 6 and a back surface 8. The back surface 8 has the rebar hanger 10 extending from it. The front surface 6 has the joist holder 12 extending from it. The rebar hanger 10 is placed through and opening in the foam form 30 and into an empty space between the two foam forms 30. This space is filled with poured concrete 32 after the rebar 40 is place in the first U-shaped portion 18 of the re-bar hanger 10.

The joist/truss hanger 2 is embedded into the wall before the concrete is poured. The flat plate 4 and the joist holder 12 are the only portions that are left exposed. The joist 38 is placed into the joist holder and secured through the openings 28 therethrough. The compression stress that is applied to the joist 38 is transferred from the joist 38 to the joist hanger 2 and on to the re-bar 40 and the poured wall 36.

FIG. 6 shows another embodiment of a joist hanger 42 for an end cap 60 of a poured wall 36. Joist hanger 42 has a unitary U-shaped truss support 44. The first side 46 of the unitary U-shaped truss support 44 has a first bottom edge 48 and, extending downwardly from the first bottom edge 48 is a first leg 54 that contains barbs 58. The second side 50 of the unitary U-shaped truss support 44 has a second bottom edge 52 and extending downwardly from the second bottom edge 52, is a second leg 56 that contains barbs 58.

FIG. 7 shows the second embodiment 42 from the side in a poured wall 36. Here the poured wall forms an end cap 60. The two foam forms 30 create and opening that is filled with concrete 32. The hanger 2 is placed in the concrete before the concrete 32 cures. The first leg 54 and the second leg 56 are inserted into the concrete 32 until the first bottom edge 48 and the second bottom edge 52 abut the concrete 32. The exposed portion is the unitary U-shaped truss support 44 that will accept a joist 38. The joist 38 is anchored to the hanger 2 by fasteners that pass through the openings 28 in the first side 46 and the second side 50. The Barbs 58 prevent the hanger 2 from pulling out of the concrete 32.

FIG. 8 shows the second embodiment 42 from the top. There are openings 28 in the bottom 62 of the unitary U-shaped truss support 44 that allows the unitary U-shaped truss support 44 to be anchored to the concrete 32 of the end cap 60.

FIG. 9 shows the second embodiment 42 from one end. The unitary U-shaped truss support 44 has a first side 46 and a second side 50. The first side 46 has a first bottom edge 48 that has a first leg 54 depending from it. The unitary U-shaped truss support 44 has a second side 50 that has a second bottom edge 52 that has a second leg 56 depending from it. The barbs 58 of the first leg 54 and the second leg 56 are also shown.

FIG. 10 shows the second embodiment 42 of the hanger 2 that features the unitary U-shaped truss support 44. The unitary U-shaped truss support has a first side 46 that has a first bottom edge 48 that has a first leg 54 that depends from it. The unitary U-shaped truss support 44 has a second side 50 that has the second bottom edge 52 that has the second leg 56 depending from it. The openings 28 allow for anchoring the joist 38 to the hanger 2 as well as the hanger 2 to the concrete 32 through the openings 28 of the bottom 62.

FIG. 11 is a full view of the third embodiment of the hanger 2. This third embodiment is a truss chord bracket or hanger 2 that supports the bottom chord of the truss at the side of the building. This embodiment is a truss-chord building bracket 2 that comprises a first flat panel 72 that has a first side edge 74, a second side edge 76, a first end edge 78 and a second end edge 80. The flat panel 72 has at least one through opening 82 near the first end edge 78 and at least one through opening 82 near the second end edge 80. There is a second flat panel 84 that has a first side edge 86. The second, flat panel 84 is integrally attached by the first side edge 86 to the first side edge 78 of the first flat panel 72 such that the second flat panel 84 is located vertically relative to the first flat panel 72. The second flat panel 84 has a plurality of openings therethrough 88.

There is also a third flat panel 90 that has a first side edge 92. The third flat panel 90 is integrally attached by the first side edge 92 to the second side edge 87 of the second flat panel 84 such that the third flat panel 90 is located vertically relative to the second flat panel 84. The third flat panel 90 has a plurality of first openings therethrough 94. The third flat panel 90 has a plurality of punched openings therethrough 96 wherein, the material that is punched forms extensions that are perpendicular to a back wall of the third flat panel 90.

FIG. 12 is a full top view of the third embodiment of the hanger 2. From the top the flat panel 84 is shown. The punched openings 96 are seen with the extension of which project in both directions.

FIG. 13 is a full frontal view of the third embodiment of the hanger 2. The first panel 72 and the second panel 90. The openings 82 in the first panel 72 are for attaching the hanger 2 to secure it to a joist. The bottom panel or third panel 90 is shown with the punched openings 96 present.

FIG. 14 is a full side view of the third embodiment of the hanger 2. The first panel 72, second panel 84 and the third panel 90 are shown. Also shown are the punched openings 96 of the third panel 90.

The hangers 2 are manufactured for use in construction of wood and concrete. The first embodiment is placed through a layer of foam that is provided as a form to fill with concrete to create walls. The hangers 2 provide improved features like a rebar hanger 10 to provide additional strength for accepting and transferring compression stress. The re-bar hanger 10 also helps prevent pull out by having the ability to allow poured concrete to pass through it, thus providing a large concrete encased anchor.

The second embodiment is placed in the end cap of a pour wall to provide a truss support for securing joist.

The third embodiment is a truss chord bracket or hanger 2 that supports the bottom chord of the truss at the side of the building.

The joist hanger/bracket 2 also serves to replace hurricane straps and eliminate the need to use them. The joist hanger/bracket 2 are mounted before the concrete is poured. It has been discovered that the joist hanger/bracket 2 is more secured than any hurricane strap because it is now part of the structure instead of an added feature.

Claims

1. A hanger for concrete walls, said hanger comprising:

A. a flat plate, said flat plate having a front surface and a back surface;

B. a re-rod hanger fixedly mounted on said back surface;

C. a joist holder fixedly mounted on said front surface, in alignment with, and opposite said re-rod hanger.

2. A hanger for concrete walls, said hanger comprising a unitary metal U-shaped truss support having a first side having a bottom edge, and a second side having a bottom edge;

said first side having a downwardly extending first leg unitarily connected to said bottom edge of said first side;

said second side having a downwardly extending second leg unitarily connected to said bottom edge of said second side, each said downwardly extending leg having a plurality of barbs extending therefrom.

3. A hanger for concrete walls, as claimed in claim 1 wherein the hanger is made of metal.

4. A hanger for concrete walls, as claimed in claim 2 wherein the hanger is made of metal.

5. A hanger for concrete walls, as claimed in claim 1 wherein the metal is a thickness is a range of 14 to 20 gauge.

6. A hanger for concrete walls, as claimed in claim 2 wherein the metal is a thickness is a range of 14 to 20 gauge.

7. A truss-chord building bracket comprising:

a first flat panel having a first side edge, and a second side edge, a first end edge and, a second end edge, said flat panel having at least one through opening near the first end edge and at least one through opening near the second end edge;

a second flat panel having a first side edge, said second flat panel being integrally attached by said first side edge to said first side edge of said first flat panel such that said second flat panel is located vertically relative to said first flat panel, said second flat panel having a plurality of openings therethrough;

a third flat panel having a first side edge, said third flat panel being integrally attached by said first side edge to said second side edge of said second flat panel such that the third flat panel is located vertically relative to said second flat panel, said third flat panel having a plurality of first openings therethrough and, said third flat panel having a plurality of punched openings therethrough wherein, the material that is punched forms extensions that are perpendicular to a back wall of said third flat panel.

8. A hanger, as claimed in claim 7 wherein the hanger is made of metal.

9. A hanger, as claimed in claim 7 wherein the metal is a thickness is a range of 14 to 20 gauge.

10. A hanger, as claimed in claim 7 wherein the metal is a thickness is a range of 14 to 20 gauge.