Patent US3141531A successfully refreshed from Google Patents.
US3141531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof construction
Assignee: Individual
•
Filing: 1960-01-21
•
Granted: 1964-07-21
•
Expires: 1980-01-21
Abstract
No abstract record available.
Inventors
- 👤 Charles H Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:58
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04B7/022; E04B7/024; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A SUB-ASSEMBLY OF A PREDETERMINED NUMBER OF IBEAM STEEL JOISTS EACH HAVING WEB AND UPPER AND LOWER FLANGES, TIE RODS AND PURLINS CONSTITUTING A UNITARY ROOF PANEL, THE FLANGES OF EACH JOIST BEING LONGER THAN THE WEB THEREOF WITH END PORTIONS OF THE UPPER FLANGE EXTENDING DOWN ALONG, AND BEING WELDED TO, THE ENDS OF THE WEB AND WITH END PORTIONS OF THE LOWER FLANGE EXTENDING UPWARDLY AND THEN SUBSTANTIALLY PARALLEL TO THE TOP FLANGE ALONG, AND BEING WELDED TO, THE LOWER EDGE OF THE WEB NEAR ITS ENDS, THE SAID TIE RODS EXTENDING THROUGH, AND BEING CONNECTED TO, THE WEBS OF THE SAID JOISTS, AND MEANS FOR CONNECTING TWO OF SUCH PANELS TOGETHER, SAID MEANS COMPRISING SLOTS IN THE WEBS OF ADJACENT PANELS AND SECOND TIE RODS EXTENDING THROUGH SAID SLOTS AND HAVING SPACED COLLARS ON EACH END THEREOF STRADDLING THE WEB.
Claim 2
Dependent Claim
143 words
A SUB-ASSEMBLY OF A PREDETERMINED NUMBER OF IBEAM STEEL JOISTS EACH HAVING WEB AND UPPER AND LOWER FLANGES, TIE RODS AND PURLINS CONSTITUTING A UNITARY ROOF PANEL, THE FLANGES OF EACH JOIST BEING LONGER THAN THE WEB THEREOF WITH END PORTIONS OF THE UPPER FLANGE EXTENDING DOWN ALONG, AND BEING WELDED TO, THE ENDS OF THE WEB AND WITH END PORTIONS OF THE LOWER FLANGE EXTENDING UPWARDLY AND THEN SUBSTANTIALLY PARALLEL TO THE TOP FLANGE ALONG, AND BEING WELDED TO, THE LOWER EDGE OF THE WEB NEAR ITS ENDS, THE SAID TIE RODS EXTENDING THROUGH, AND BEING CONNECTED TO, THE WEBS OF THE SAID JOISTS, AND MEANS FOR CONNECTING TWO OF SUCH PANELS TOGETHER, SAID MEANS COMPRISING SLOTS IN THE WEBS OF ADJACENT PANELS AND SECOND TIE RODS EXTENDING THROUGH SAID SLOTS AND HAVING SPACED COLLARS ON EACH END THEREOF STRADDLING THE WEB.
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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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |