US3152347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible girder
Assignee: Individual
•
Filing: 1961-06-09
•
Granted: 1964-10-13
•
Expires: 1981-06-09
Abstract
No abstract record available.
Inventors
- 👤 Dale R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:50
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/005; E04G; E04G11/00; E04G11/36; E04G11/48; E04G11/50; E04G11/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A COLLAPSIBLE AND EXPANSIBLE LAZY-TONGS GIRDER COMPRISING A PAIR OF CROSSED MEMBERS, OPERATING MEANS MOUNTED ON THE LAZY TONGS GIRDER AND CONNECTED THERETO SO AS TO SELECTIVELY EXTEND AND CONTRACT THE GIRDER, BRACE MEANS MOVABLY CONNECTED BETWEEN THE ENDS OF SAID CROSSED MEMBERS AND ARRANGED TO CONTRACT AND EXTEND THEREWITH, SAID BRACE MEANS RIGIDLY CONNECTING AND LOCKING TOGETHER SAID CROSSED MEMBERS COMPOSING THE LAZY TONGS WHEN THE GIRDER IS FULLY EXTENDED, SAID BRACE MEANS INCLUDING A BEAM PIVOTALLY CONNECTED AT ONE END TO THE END OF ONE OF SAID CROSSED MEMBERS, A STRUT PIVOTALLY CONNECTED TO A MID-PORTION OF THE BEAM AND TO THE CORRESPONDING END OF THE OTHER OF SAID CROSSED MEMBERS.
Claim 2
Dependent Claim
113 words
A COLLAPSIBLE AND EXPANSIBLE LAZY-TONGS GIRDER COMPRISING A PAIR OF CROSSED MEMBERS, OPERATING MEANS MOUNTED ON THE LAZY TONGS GIRDER AND CONNECTED THERETO SO AS TO SELECTIVELY EXTEND AND CONTRACT THE GIRDER, BRACE MEANS MOVABLY CONNECTED BETWEEN THE ENDS OF SAID CROSSED MEMBERS AND ARRANGED TO CONTRACT AND EXTEND THEREWITH, SAID BRACE MEANS RIGIDLY CONNECTING AND LOCKING TOGETHER SAID CROSSED MEMBERS COMPOSING THE LAZY TONGS WHEN THE GIRDER IS FULLY EXTENDED, SAID BRACE MEANS INCLUDING A BEAM PIVOTALLY CONNECTED AT ONE END TO THE END OF ONE OF SAID CROSSED MEMBERS, A STRUT PIVOTALLY CONNECTED TO A MID-PORTION OF THE BEAM AND TO THE CORRESPONDING END OF THE OTHER OF SAID CROSSED MEMBERS.
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |