US3661354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced concrete wall form panel
Assignee: General Electric Co
•
Filing: 1970-07-13
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Granted: 1972-05-09
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Expires: 1990-07-13
Abstract
Abstract A reinforced concrete wall form panel of the ''''Steel-Ply'''' type and consisting of a steel-studded rectangular plywood facing which is reinforced by horizontally disposed, vertically, spaced, transverse crossbars which define included openings therebetween. Additional vertically disposed, horizontally spaced, longitudinal backbone members extend the full length of the panel, intersect the transverse crossbars, extend across the included openings and provide a plate action which limits the deflection of the plywood facing to substantially the deflection of such crossbars, while at the same time preventing rotation of the crossbars.
Inventors
- 👤 Richart T Dagiel
- 👤 David L Cody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:26
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/04; E04G17/047; E04G11/00; E04G11/06; E04G11/08; E04G11/10; E04G11/12; E04G9/00; E04G9/02; E04G2009/023; E04G2009/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
246 words
A concrete wall form panel adapted to be positioned vertically in edge-to-edge relation with like panels in order to form a part of a concrete wall form, said panel comprising a rectangular plywood facing and a rectangular marginal reinforcing frame including vertical frame members and top and bottom horizontal frame members, said vertical frame members being provided with vertically spaced pairs of opposed bolt-receiving openings at equally spaced levels, a series of transversely extending horizontal plywood-reinforcing crossbars having their ends secured to the vertical frame members, there being one crossbar for each pair of opposed openings, each crossbar being Z-shape in transverse cross section and having a horizontal shelf-like web which is vertically displaced from the horizontal plane of the associated pair of openings a slight distance, a first flat vertical inside flange which bears coextensively against the plywood facing, and a second flat vertical outside flange which projects in a direction opposite to the direction of projection of the first inside flange of the crossbar, all of said crossbars extending in parallelism and defining in combination with said vertical frame members a series of rectangular included openings between adjacent crossbars, and at least one vertically extending backbone member spanning the distance between said top and bottom horizontal frame members and intersecting the crossbars, said backbone member having a flat inside flange which bears coextensively against the plywood facing, and an outwardly directed flange which extends at a right angle to the last mentioned inside flange.
Claim 2
Dependent Claim
246 words
A concrete wall form panel adapted to be positioned vertically in edge-to-edge relation with like panels in order to form a part of a concrete wall form, said panel comprising a rectangular plywood facing and a rectangular marginal reinforcing frame including vertical frame members and top and bottom horizontal frame members, said vertical frame members being provided with vertically spaced pairs of opposed bolt-receiving openings at equally spaced levels, a series of transversely extending horizontal plywood-reinforcing crossbars having their ends secured to the vertical frame members, there being one crossbar for each pair of opposed openings, each crossbar being Z-shape in transverse cross section and having a horizontal shelf-like web which is vertically displaced from the horizontal plane of the associated pair of openings a slight distance, a first flat vertical inside flange which bears coextensively against the plywood facing, and a second flat vertical outside flange which projects in a direction opposite to the direction of projection of the first inside flange of the crossbar, all of said crossbars extending in parallelism and defining in combination with said vertical frame members a series of rectangular included openings between adjacent crossbars, and at least one vertically extending backbone member spanning the distance between said top and bottom horizontal frame members and intersecting the crossbars, said backbone member having a flat inside flange which bears coextensively against the plywood facing, and an outwardly directed flange which extends at a right angle to the last mentioned inside flange.
Claim 3
Dependent Claim
32 words
A concrete wall form panel as set forth in claim 1 and wherein said flat vertical inside flange of each crossbar projects upwardly, and the third flat vertical outside flange projects downwardly.
Claim 4
Dependent Claim
68 words
A concrete wall form panel as set forth in claim 2 and wherein the horizontal shelf-like web of each crossbar is formed with a narrow notch through which the flat vertical outside flange of the backbone member projects, and the vertical inside flange of each crossbar is formed with a wide notch through which the flat inside flange of the backbone member projects, said inside flanges being coplanar.
Claim 5
Dependent Claim
35 words
A concrete wall form panel as set forth in claim 3 and wherein there are two backbone members and they divide each of the included openings between adjacent crossbars into three substantially equal width openings.
Claim 6
Dependent Claim
57 words
A concrete wall form panel as set forth in claim 4 and wherein the crossbars and backbone members are welded together at their regions of intersection and thus provide a rigid lattice-like reinforcement for the plywood facing within the rectangular confines of the marginal reinforcing frame and in which the various lattice-openings are substantially equal in size.
Claim 7
Dependent Claim
34 words
A concrete wall form panel as set forth in claim 5 and wherein the flat inside flanges of the two backbone members project laterally from their associated outwardly directed flanges in the same direction.
Claim 8
Dependent Claim
38 words
A concrete wall form panel as set forth in claim 6 and wherein the horizontal shelf-like web of each crossbar is displaced slightly above the horizontal plane of its associated pair of openings in the vertical frame members.
Claim 9
Dependent Claim
30 words
A concrete wall form panel as set forth in claim 7 and wherein the plywood facing is comprised of fivE plies and has a predominant grain direction which extends vertically.
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |