US3113402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slab construction
Assignee: Individual
•
Filing: 1960-12-09
•
Granted: 1963-12-10
•
Expires: 1980-12-09
Abstract
No abstract record available.
Inventors
- 👤 Donald H Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:44
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/40; E04G11/46; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN INTERRUPTED STAGE METHOD OF PRODUCING A MONOLITHIC SLAB WITH SUFFICIENT BEAM STRENGTH TO BE SELF-SUPPORTING AND HAVING ITS BOTTOM SURFACE IN THE FORM OF A PLURALITY OF DOWNWARDLY EXTENDING CUSPS SPACED FROM EACH OTHER ACROSS THE BOTTOM SURFACE AND EXTENDING PARALLEL TO EACH OTHER THE LENGTH OF THE SLAB; COMPRISING A. SUPPORTING A SERIES OF PARALLEL TRUSSES ON SUITABLE END SUPPORTS, SAID TRUSSES, (1) EACH HAVING A TOP CHORD AND A BOTTOM CHORD, (2) EACH TRUSS BEING POSITIONED IN A CUSP OF BENDABLE SHEET MATERIAL IMPERVIOUS TO THE FLOW OF CONCRETE WITH SAID BOTTOM CHORD ADJACENT THE BOTTOM OF THE CUSP AND WITH SAID TOP CHORD IN SUBSTANTIALLY THE SAME PLANE AS THE TOP OF THE CUSPS, (3) WITH CONNECTING PORTIONS OF SAID SHEET MATERIAL EXTENDING BETWEEN THE UPPER SIDE PORTIONS OF ADJACENT CUSPS,
Claim 2
Dependent Claim
135 words
AN INTERRUPTED STAGE METHOD OF PRODUCING A MONOLITHIC SLAB WITH SUFFICIENT BEAM STRENGTH TO BE SELF-SUPPORTING AND HAVING ITS BOTTOM SURFACE IN THE FORM OF A PLURALITY OF DOWNWARDLY EXTENDING CUSPS SPACED FROM EACH OTHER ACROSS THE BOTTOM SURFACE AND EXTENDING PARALLEL TO EACH OTHER THE LENGTH OF THE SLAB; COMPRISING A. SUPPORTING A SERIES OF PARALLEL TRUSSES ON SUITABLE END SUPPORTS, SAID TRUSSES, (1) EACH HAVING A TOP CHORD AND A BOTTOM CHORD, (2) EACH TRUSS BEING POSITIONED IN A CUSP OF BENDABLE SHEET MATERIAL IMPERVIOUS TO THE FLOW OF CONCRETE WITH SAID BOTTOM CHORD ADJACENT THE BOTTOM OF THE CUSP AND WITH SAID TOP CHORD IN SUBSTANTIALLY THE SAME PLANE AS THE TOP OF THE CUSPS, (3) WITH CONNECTING PORTIONS OF SAID SHEET MATERIAL EXTENDING BETWEEN THE UPPER SIDE PORTIONS OF ADJACENT CUSPS,
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Cited
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Cited
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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) | 1966-12-09 | 1967-06-10 | 1967-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-09 | 1971-06-10 | 1971-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-09 | 1975-06-10 | 1975-12-10 | $7700.00 | Window Closed / Lapsed |