US3624980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite end connection for steel joists
Assignee: Individual
•
Filing: 1970-02-11
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Granted: 1971-12-07
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Expires: 1990-02-11
Abstract
Abstract A COMPOSITE ACTION JOIST END INTERCONNECTION WITH A SUPPORTING BEAM AND CARRYING A CONCRETE SLAB IS DESCRIBED. AN OUTWARDLY-EXTENDING END PORTION OF THE TOP CHORD OF A STEEL JOITS IS PROVIDED AT THE UNDERSIDE WITH BEARING MEANS ADAPTED TO SEAT UPON AND BE SECURED TO THE SUPPORTING BEAM, WHEREBY, WHEN THE SUPPROTED CONCRETE SLAB IS POURED IN PLACE IN SUCH MANNER AS TO EXTEND OVER AND UPON THE SUPPORTING BEAM, THE JOIST END INTERCONNECTING THEREWITH IS ENCASED WITHIN THE SLAB CONCRETE TO EFFECT THE COMPOSITE ACTION BETWEEN THE SUPPORTING STEEL AND THE CONCRETE.
Inventors
- 👤 Ira J Mcmanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:30
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/17; E04B5/23; E04B5/29; E04B5/32; E04B5/36; E04B5/38; E04B5/40
Claims Analysis
Total Claims: 0
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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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |