US3154832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cantilever form for casting concrete
Assignee: Dravo Corp
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Filing: 1962-07-09
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Granted: 1964-11-03
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Expires: 1982-07-09
Abstract
No abstract record available.
Inventors
- 👤 Everett L Weidner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:19
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
334 words
A CANTILEVER FORM FOR USE IN THE POURING OF CONCRETE WALL STRUCTIRES COMPRISING A PANEL HAVING A CONCRETE CONFINING FACE AND A REAR FACE; A VERTICAL STRUCTURAL SECTION ON THE REAR FACE WITH A FIRST PIVOT PIN OPENING ABOVE THE VERTICAL CENTER OF THE PANEL AND HAVING A SECOND PIVOT PIN OPENING BELOW THE VERTICAL CENTER OF THE PANEL NEAR THE LOWERMOST EDGE THEREOF; A STIFF-BACK HAVING A LENGTH GREATER THAN THE VERTICAL HEIGHT OF THE PANEL HAVING FIRST AND SECOND PIN OPENINGS THERETHROUGH SPACED EQUALLY TO THE SPACING OF THE PIVOT PIN OPENINGS IN SAID VERTICAL STRUCTURAL SECTIONS WHEREBY THE FIRST OPENINGS IN BOTH MEMBERS OR THE SECOND OPENINGS IN BOTH MEMBERS MAY BE SELECTIVELY BROUGHT INTO ALIGNMENT, THE SECOND PIVOT PIN OPENING BEING REMOTE FROM EITHER END OF THE STIFFBACK; A PIVOT PIN REMOVABLY PASSED THROUGH ONE OF AND NEAR THE MIDDLE THEREOF, THE FIRST OPENING BEING CLOSE TO THE UPPER END OF THE STIFF-BACK THE TWO ALIGNED SETS OF OPENINGS CONNECTING THE STIFF-BACK AND PANEL FOR RELATIVE ARCUATE MOVEMENT, THE REMOVABLE PIN ENABLING THE PIVOT TO BE IN EITHER OF THE FIRST OR SECOND PIN OPENINGS WHEREBY THE PIVOTAL CONNECTION OF THE STIFF-BACK WITH THE PANEL MAY BE SELECTIVELY SHIFTED FROM ABOVE THE VERTICAL CENTER OF THE PANEL TO A POINT BELOW THE VERTICAL CENTER OF THE PANEL AND CLOSE TO ITS LOWER EDGE, THE SECOND PIVOT PIN OPENING IN THE STRUCTURAL MEMBER ON THE PANEL BEING SO POSITIONED THAT APPROXIMATELY HALF THE LENGTH OF THE STIFF-BACK PROJECTS BELOW THE PANEL WHEN THE PIVOT PIN IS ENGAGED IN THE SECOND OPENING OF THE STRUCTURAL MEMBER ON THE PANEL AND THE OPENING NEAR THE MIDDLE OF THE STIFF-BACK WHILE THE UPPER END OF THE STIFF-BACK IS ABOVE THE CENTER OF THE PANEL, AND A REMOVABLE TRANSVERSE ADJUSTING SCREW IN THE UPPER END OF THE STIFF-BACK, THE STRUCTURAL MEMBER ON THE BACK OF THE PANEL HAVING A NUT SECURED THERETO ABOVE THE CENTER OF THE PANEL WITH WHICH SAID SCREW MAY BE ENGAGED.
Claim 2
Dependent Claim
334 words
A CANTILEVER FORM FOR USE IN THE POURING OF CONCRETE WALL STRUCTIRES COMPRISING A PANEL HAVING A CONCRETE CONFINING FACE AND A REAR FACE; A VERTICAL STRUCTURAL SECTION ON THE REAR FACE WITH A FIRST PIVOT PIN OPENING ABOVE THE VERTICAL CENTER OF THE PANEL AND HAVING A SECOND PIVOT PIN OPENING BELOW THE VERTICAL CENTER OF THE PANEL NEAR THE LOWERMOST EDGE THEREOF; A STIFF-BACK HAVING A LENGTH GREATER THAN THE VERTICAL HEIGHT OF THE PANEL HAVING FIRST AND SECOND PIN OPENINGS THERETHROUGH SPACED EQUALLY TO THE SPACING OF THE PIVOT PIN OPENINGS IN SAID VERTICAL STRUCTURAL SECTIONS WHEREBY THE FIRST OPENINGS IN BOTH MEMBERS OR THE SECOND OPENINGS IN BOTH MEMBERS MAY BE SELECTIVELY BROUGHT INTO ALIGNMENT, THE SECOND PIVOT PIN OPENING BEING REMOTE FROM EITHER END OF THE STIFFBACK; A PIVOT PIN REMOVABLY PASSED THROUGH ONE OF AND NEAR THE MIDDLE THEREOF, THE FIRST OPENING BEING CLOSE TO THE UPPER END OF THE STIFF-BACK THE TWO ALIGNED SETS OF OPENINGS CONNECTING THE STIFF-BACK AND PANEL FOR RELATIVE ARCUATE MOVEMENT, THE REMOVABLE PIN ENABLING THE PIVOT TO BE IN EITHER OF THE FIRST OR SECOND PIN OPENINGS WHEREBY THE PIVOTAL CONNECTION OF THE STIFF-BACK WITH THE PANEL MAY BE SELECTIVELY SHIFTED FROM ABOVE THE VERTICAL CENTER OF THE PANEL TO A POINT BELOW THE VERTICAL CENTER OF THE PANEL AND CLOSE TO ITS LOWER EDGE, THE SECOND PIVOT PIN OPENING IN THE STRUCTURAL MEMBER ON THE PANEL BEING SO POSITIONED THAT APPROXIMATELY HALF THE LENGTH OF THE STIFF-BACK PROJECTS BELOW THE PANEL WHEN THE PIVOT PIN IS ENGAGED IN THE SECOND OPENING OF THE STRUCTURAL MEMBER ON THE PANEL AND THE OPENING NEAR THE MIDDLE OF THE STIFF-BACK WHILE THE UPPER END OF THE STIFF-BACK IS ABOVE THE CENTER OF THE PANEL, AND A REMOVABLE TRANSVERSE ADJUSTING SCREW IN THE UPPER END OF THE STIFF-BACK, THE STRUCTURAL MEMBER ON THE BACK OF THE PANEL HAVING A NUT SECURED THERETO ABOVE THE CENTER OF THE PANEL WITH WHICH SAID SCREW MAY BE ENGAGED.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |