Patent US3320646A successfully refreshed from Google Patents.
US3320646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable form for monolithic concrete roof
Assignee: Individual
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Filing: 1966-07-05
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Granted: 1967-05-23
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A FORM FOR CASTING A MONOLITHIC CONCRETE ROOF STRUCTURE COMPRISING: A CENTER FORM SECTION; MEANS FOR SUPPORTING SUCH CENTER SECTION AT A PREDETERMINED HEIGHT ABOVE THE GROUND AND INCLUDING A LOWER FRAME, GROUND WHEELS ON SAID LOWER FRAME FOR TRANSPORTING SAID FORM, AN UPPER VERTICALLY MOVABLE FRAME ON SAID LOWER FRAME AND SUPPORTING SAID CENTER FORM SECTION WHEREBY SAID CENTER SECTION MAY BE RAISED AND LOWERED THEREBY TO VARY SAID HEIGHT, MEANS ON SAID LOWER FRAME AND ACTING UPON SAID UPPER FRAME FOR SELECTIVELY VERTICALLY MOVING THE SAME, AND MEANS FOR SECURING SAID UPPER FRAME TO SAID LOWER FRAME AT SAID PREDETERMINED HEIGHT; A PAIR OF SIDE FORM SECTIONS RESPECTIVELY PIVOTALLY CONNECTED TO SAID CENTER SECTION AND MOVABLE FROM A FIRST POSITION EXTENDING DOWNWARDLY FROM SAID CENTER SECTION TO A SECOND POSITION EXTENDING OUTWARDLY FROM SAID CENTER SECTION AND FORMING A COMPLETE EXTENDED AREA FORM THEREWITH; AND MEANS ON SAID SUPPORTING MEANS FOR RESPECTIVELY RETAINING SAID SIDE SECTIONS IN SAID SECOND POSITIONS THEREOF AND INCLUDING A TRUSS STRUCTURE REMOVABLY SECURED TO SAID UPPER FRAME AND SIDE SECTIONS.
Claim 2
Dependent Claim
177 words
A FORM FOR CASTING A MONOLITHIC CONCRETE ROOF STRUCTURE COMPRISING: A CENTER FORM SECTION; MEANS FOR SUPPORTING SUCH CENTER SECTION AT A PREDETERMINED HEIGHT ABOVE THE GROUND AND INCLUDING A LOWER FRAME, GROUND WHEELS ON SAID LOWER FRAME FOR TRANSPORTING SAID FORM, AN UPPER VERTICALLY MOVABLE FRAME ON SAID LOWER FRAME AND SUPPORTING SAID CENTER FORM SECTION WHEREBY SAID CENTER SECTION MAY BE RAISED AND LOWERED THEREBY TO VARY SAID HEIGHT, MEANS ON SAID LOWER FRAME AND ACTING UPON SAID UPPER FRAME FOR SELECTIVELY VERTICALLY MOVING THE SAME, AND MEANS FOR SECURING SAID UPPER FRAME TO SAID LOWER FRAME AT SAID PREDETERMINED HEIGHT; A PAIR OF SIDE FORM SECTIONS RESPECTIVELY PIVOTALLY CONNECTED TO SAID CENTER SECTION AND MOVABLE FROM A FIRST POSITION EXTENDING DOWNWARDLY FROM SAID CENTER SECTION TO A SECOND POSITION EXTENDING OUTWARDLY FROM SAID CENTER SECTION AND FORMING A COMPLETE EXTENDED AREA FORM THEREWITH; AND MEANS ON SAID SUPPORTING MEANS FOR RESPECTIVELY RETAINING SAID SIDE SECTIONS IN SAID SECOND POSITIONS THEREOF AND INCLUDING A TRUSS STRUCTURE REMOVABLY SECURED TO SAID UPPER FRAME AND SIDE SECTIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |