US3608048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a prebent girder embedded in concrete
Assignee: PROCEDES NOUVEAUX DE CONSTRUCT
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Filing: 1969-08-11
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Granted: 1971-09-21
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Expires: 1989-08-11
Abstract
Abstract Method for manufacturing a prebent girder embedded in concrete wherein the rigid metal joist of said girder is prebent, the joist is maintained prebent and the tension flange of said joist is embedded in a mass of concrete. Before the prebending, a rigid metal structure, constituted essentially, on the one hand, by longitudinal elements arranged against the edges of said compressed flange and, on the other hand, by transverse connection elements, is temporarily applied to the compressed flange of the joist, said structure acting to avoid lateral buckling of the compressed flange.
Inventors
- 👤 Abraham Lipski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/293; E04C3/294
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A method as claimed in claim 1, and placing a lubricant between said longitudinal elements of said metal structure and the edges of said last-mentioned flange.
Claim 2
Dependent Claim
46 words
A method as claimed in claim 1, and tightening said longitudinal elements of said metal structure against said edges of said last-mentioned flange so as to avoid their sliding on said edges during the prebending and to form a temporary frame complement for said last-mentioned flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |