US3249235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable base alpha-frame hoist
Assignee: AMES SHOVEL AND TOOL CO
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Filing: 1964-03-25
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Granted: 1966-05-03
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 Roberts Rex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:50
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6472; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A LOAD-HANDLING DEVICE COMPRISING A BASE, A PAIR VARIABLY EXTENSIBLE AND CONTRACTILE MAIN LEGS, MEANS PIVOTALLY ANCHORING ONE END OF ONE OF SAID LEGS TO SAID BASE, ONE END OF THE OTHER OF SAID LEGS BEING MOVABLY POSITIONABLE RELATIVE TO THE ANCHORED END OF SAID ONE OF SAID LEGS, MEANS FOR ADJUSTING THE POSITIONS OF THE POSTIONABLE END OF SAID OTHER OF SAID LEGS RELATIVE TO SAID ANCHORED END OF SAID ONE OF SAID LEGS MEANS PIVOTALLY INTERCONNECTING THE ENDS OF SAID LEGS OPPOSITE SAID ANCHORED AND POSITIONABLE ENDS OF SAID LEGS, LOAD ATTACHING MEANS CONNECTED WITH SAID LEG AT THE SITE OF THE PIVOTAL INTERCONNECTION BETWEEN THEIR SAID OPPOSITE ENDS, MEANS FOR POSITIVELY EXTENDING AND CONTRACTING THE LEGS INDEPENDENTLY WHILE SAID LOAD ATTACHING MEANS IS CONNECTED WITH A LOAD, WHEREBY, UPON EXTENSION AND CONTRACTION OF SAID MAIN LEGS, SAID LOAD ATTACHING MEANS WITH A LOAD ATTACHED IS MOVABLE THROUGH PATHS OF MOVEMENT THE LIMITS OF WHICH ARE ESTABLISHED BY THE MAXIMUM AND MINIMUM LENGTHS OF SAID LEGS AND BY THE SPACINGS BETWEEN SAID ANCHORED AND POSITIONABLE ENDS OF SAID LEGS.
Claim 2
Dependent Claim
181 words
A LOAD-HANDLING DEVICE COMPRISING A BASE, A PAIR VARIABLY EXTENSIBLE AND CONTRACTILE MAIN LEGS, MEANS PIVOTALLY ANCHORING ONE END OF ONE OF SAID LEGS TO SAID BASE, ONE END OF THE OTHER OF SAID LEGS BEING MOVABLY POSITIONABLE RELATIVE TO THE ANCHORED END OF SAID ONE OF SAID LEGS, MEANS FOR ADJUSTING THE POSITIONS OF THE POSTIONABLE END OF SAID OTHER OF SAID LEGS RELATIVE TO SAID ANCHORED END OF SAID ONE OF SAID LEGS MEANS PIVOTALLY INTERCONNECTING THE ENDS OF SAID LEGS OPPOSITE SAID ANCHORED AND POSITIONABLE ENDS OF SAID LEGS, LOAD ATTACHING MEANS CONNECTED WITH SAID LEG AT THE SITE OF THE PIVOTAL INTERCONNECTION BETWEEN THEIR SAID OPPOSITE ENDS, MEANS FOR POSITIVELY EXTENDING AND CONTRACTING THE LEGS INDEPENDENTLY WHILE SAID LOAD ATTACHING MEANS IS CONNECTED WITH A LOAD, WHEREBY, UPON EXTENSION AND CONTRACTION OF SAID MAIN LEGS, SAID LOAD ATTACHING MEANS WITH A LOAD ATTACHED IS MOVABLE THROUGH PATHS OF MOVEMENT THE LIMITS OF WHICH ARE ESTABLISHED BY THE MAXIMUM AND MINIMUM LENGTHS OF SAID LEGS AND BY THE SPACINGS BETWEEN SAID ANCHORED AND POSITIONABLE ENDS OF SAID LEGS.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |