US3729159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall forming bracket
Assignee: Individual
•
Filing: 1971-11-02
•
Granted: 1973-04-24
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Expires: 1991-11-02
Abstract
Abstract A wall-forming bracket or clamp, also known as a waler bracket, for concrete wall forms of the type using plywood wall-forming sheets, tie rods with headed ends projecting through holes in the sheets, vertical lumber studs overlying the sheets and horizontal lumber walers overlying the studs. The bracket is a one-piece rigid metal member having a flat base on which the waler rests, an upturned outer end flange for overlying the outer edge of the waler, an upturned inclined leg on the opposite end of the base having a keyhole slotted downturned end flange for receiving the headed end of a tie rod and overlying the outer surface of the plywood sheet, and an outturned foot on the bottom of the downturned flange adapted to be struck by a hammer to remove the bracket from the wall form after use. The slotted downturned flange presents a large surface area to the plywood sheet which will not dimple the plywood under a heavy load and the face of the downturned flange receiving the head of the tie rod is inclined to cam the bracket against the plywood sheet causing it to project straight outwardly therefrom. The top and bottom ends of the downturned flange are rounded and any bending deformation of the bracket is in a direction that will not permit these rounded ends to damage the plywood.
Inventors
- 👤 R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:09
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
225 words
A waler bracket for concrete wall forms of the type using plywood sheets for wall forming panels, tie rods with headed ends projecting through holes in the sheets having abutments engaging the inner faces of the sheets, vertical studs overlying the sheets and horizontal walers overlying the studs which comprises a one-piece rigid flat strip metal bracket having a horizontal base, an upturned flange on one end of the base for overlying a waler, an upwardly inclined leg on the other end of the base, a downturned flange depending from the top of said inclined leg for overlying the outer surface of a plywood sheet, said upturned leg extending to a level so that the downturned flange has a substantial portion thereof aligned with said upturned flange, an outturned foot on the bottom of said downturned flange underlying said inclined leg, a keyhole slot in said downturned flange for receiving the headed end of a tie rod and having the narrow end terminating in said substantial portion at a level to place the axis of the tie rod at the approximate mid portion of said upturned flange, and a cam surface on said downturned flange surrounding said keyhole slot receiving the head of the tie rod thereagainst for drawing the downturned flange against the plywood sheet to hold the bracket straight outwardly from the sheet.
Claim 2
Dependent Claim
225 words
A waler bracket for concrete wall forms of the type using plywood sheets for wall forming panels, tie rods with headed ends projecting through holes in the sheets having abutments engaging the inner faces of the sheets, vertical studs overlying the sheets and horizontal walers overlying the studs which comprises a one-piece rigid flat strip metal bracket having a horizontal base, an upturned flange on one end of the base for overlying a waler, an upwardly inclined leg on the other end of the base, a downturned flange depending from the top of said inclined leg for overlying the outer surface of a plywood sheet, said upturned leg extending to a level so that the downturned flange has a substantial portion thereof aligned with said upturned flange, an outturned foot on the bottom of said downturned flange underlying said inclined leg, a keyhole slot in said downturned flange for receiving the headed end of a tie rod and having the narrow end terminating in said substantial portion at a level to place the axis of the tie rod at the approximate mid portion of said upturned flange, and a cam surface on said downturned flange surrounding said keyhole slot receiving the head of the tie rod thereagainst for drawing the downturned flange against the plywood sheet to hold the bracket straight outwardly from the sheet.
Claim 3
Dependent Claim
39 words
The waler bracket of claim 1 wherein the inclined leg and the top end of the downturned flange and the outturned foot and the bottom end of the downturned flange are connected by smooth rounded portions of large radii.
Claim 4
Dependent Claim
22 words
The waler bracket of claim 1 wherein the inclined leg has an angle between 30* to 60* relative to the horizontal base.
Claim 5
Dependent Claim
192 words
A waler bracket for concrete wall forms of the type using plywood sheets for wall forming panels, tie rods with headed ends projecting through holes in the sheets having abutments engaging the inner faces of the sheets, vertical studs overlying the sheets and horizontal walers overlying the studs which comprises a one-piece rigid flat strip metal bracket having a horizontal base, an upturned flange on one end of the base for overlying a waler, an upwardly inclined leg on the other end of the base, a downturned flange depending from the top of said inclined leg for overlying the outer surface of a plywood sheet, said upturned leg extending to a level so that the downturned flange has a substantial portion thereof aligned with said upturned flange, an outturned foot on the bottom of said downturned flange underlying said inclined leg, and a vertical keyhole slot in said downturned flange for receiving the headed end of a tie rod and having the top of the narrow end terminating in said substantial portion at a level to place the axis of the tie rod at the approximate mid portion of said upturned flange.
Claim 6
Dependent Claim
192 words
A waler bracket for concrete wall forms of the type using plywood sheets for wall forming panels, tie rods with headed ends projecting through holes in the sheets having abutments engaging the inner faces of the sheets, vertical studs overlying the sheets and horizontal walers overlying the studs which comprises a one-piece rigid flat strip metal bracket having a horizontal base, an upturned flange on one end of the base for overlying a waler, an upwardly inclined leg on the other end of the base, a downturned flange depending from the top of said inclined leg for overlying the outer surface of a plywood sheet, said upturned leg extending to a level so that the downturned flange has a substantial portion thereof aligned with said upturned flange, an outturned foot on the bottom of said downturned flange underlying said inclined leg, and a vertical keyhole slot in said downturned flange for receiving the headed end of a tie rod and having the top of the narrow end terminating in said substantial portion at a level to place the axis of the tie rod at the approximate mid portion of said upturned flange.
Claim 7
Dependent Claim
21 words
The waler bracket of claim 4 wherein said outturned foot underlies the inclined leg at a level below the horizontal base.
Claim 8
Dependent Claim
29 words
The waler bracket of claim 4 wherein the downturned flange presents a large surface area for overlying a plywood sheet to distribute the loads therebetween over a large area.
Claim 9
Dependent Claim
51 words
The waler bracket of claim 4 wherein the face of the downturned flange receiving the head of the tie rod is inclined outwardly from the large to the small end of the keyhole slot to draw the flange against the plywood sheet and hold the bracket straight outwardly from the sheet.
References Cited (Backward Citations)
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Cited
US3161939A
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US3273848A
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Cited
US3426992A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |