Patent US3885369A successfully refreshed from Google Patents.
US3885369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural element
Assignee: Etablissement Vigarex
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Filing: 1973-03-08
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Granted: 1975-05-27
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Expires: 1993-03-08
Abstract
Abstract A prefabricated metal beam is constituted at least of two reinforcing elements each comprising at least one lower member destined to take up tensional stresses, at least one upper member destined to take up compressive stresses and intermediate members for the absorption of shear stresses. Said reinforcing elements are disposed parallel to one another and are connected rigidly by said intermediate members.
Inventors
- 👤 Jean-Pierre Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:57
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04C; E04C5/00; E04C5/01; E04C5/06; E04C5/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
A concrete reinforcement and supporting beam structure comprising, at least one bottom pair of metallic longitudinal members disposed parallel longitudinally and spaced laterally from each other, an upper longitudinal metallic member spaced upwardly from said pair of parallel longitudinal members parallel therewith, said upper longitudinal member being disposed in a plane intermediate the bottom pair of longitudinal members reinforcement rod configured zig-zag as triangles having upper apices substantially aligned on and joined to the upper longitudinal member with the sides of the individual triangles joined at the bottom to individual alternate ones of the bottom longitudinal members, said bottom longitudinal member''s being spaced from each other a space greater than the thickness of said reinforcement rod, said reinforcement rod having continuations of the sides of said triangles extending transversely of a space between the bottom longitudinal members defining cross members joining the triangles and the bottom longitudinal members, and a prestressed slab of concrete within which said bottom longitudinal members and the transverse cross bars are embedded, said bottom longitudinal members extending axially outwardly from said concrete slab at opposite ends thereof.
Claim 2
Dependent Claim
182 words
A concrete reinforcement and supporting beam structure comprising, at least one bottom pair of metallic longitudinal members disposed parallel longitudinally and spaced laterally from each other, an upper longitudinal metallic member spaced upwardly from said pair of parallel longitudinal members parallel therewith, said upper longitudinal member being disposed in a plane intermediate the bottom pair of longitudinal members reinforcement rod configured zig-zag as triangles having upper apices substantially aligned on and joined to the upper longitudinal member with the sides of the individual triangles joined at the bottom to individual alternate ones of the bottom longitudinal members, said bottom longitudinal member''s being spaced from each other a space greater than the thickness of said reinforcement rod, said reinforcement rod having continuations of the sides of said triangles extending transversely of a space between the bottom longitudinal members defining cross members joining the triangles and the bottom longitudinal members, and a prestressed slab of concrete within which said bottom longitudinal members and the transverse cross bars are embedded, said bottom longitudinal members extending axially outwardly from said concrete slab at opposite ends thereof.
Claim 3
Dependent Claim
40 words
A concrete reinforcement and supporting beam structure according to claim 1, in which said triangles are similar and of substantially the same dimension, and said transverse cross members are substantially normal to the bottom longitudinal members and substantially equally spaced.
Claim 4
Dependent Claim
26 words
A concrete reinforcement and supporting beam structure according to claim 1, in which said triangles are spaced from each other longitudinally of said bottom longitudinal members.
Claim 5
Dependent Claim
35 words
A concrete reinforcement and supporting beam structure according to claim 1, including an L-shaped prestressed concrete slab in which said bottom longitudinal members and cross bars are embedded in a horizontal portion of said slab.
Claim 6
Dependent Claim
32 words
A concrete reinforcement and supporting beam structure according to claim 1, including a U-shaped prestressed concrete slab having a base portion in which said bottom longitudinal members and cross bars are embedded.
Claim 7
Dependent Claim
36 words
A concrete reinforcement and supporting beam structure according to claim 1, in which said upper longitudinal member comprises a V-shaped channel member with the apices of the triangles joined to the apex of said channel member.
Claim 8
Dependent Claim
22 words
A concrete reinforcement and supporting beam structure according to claim 6, in which said bottom longitudinal members are circular in cross section.
References Cited (Backward Citations)
US2558946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |