US3095181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic chain mover
Assignee: Individual
•
Filing: 1961-08-17
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Granted: 1963-06-25
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Expires: 1981-08-17
Abstract
No abstract record available.
Inventors
- 👤 Dromboski Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:48
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/006
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
169 words
A MACHINE OF THE CHARACTER DESCRIBED, COMPRISING A PAIR OF SPACED, PARALLEL CYLINDERS, A PISTON IN EACH CYLINDER ADAPTED TO MOVE FORWARDLY AND TO BE RETRACTED, A YOKE JOINING THE FORWARD ENDS OF THE PISTON, HYDRAULIC MEANS FOR EXTENDING AND RETRACTING THE PISTONS, A FIRST TUBE SECURED TO AND EXTENDING FORWARDLY FROM THE MIDDLE OF THE YOKE, A SELF-CLOSING GATE HINGED TO EFFECTIVELY CLOSE THE FORWARD END OF SAID FIRST TUBE AND ADAPTED TO OPEN FORWARDLY ONLY, A SECOND TUBE POSITIONED BEHIND AND IN SPACED ALIGNMENT RELATIVE TO THE FIRST TUBE, A SELF-CLOSING GATE HINGED TO EFFECTIVELY CLOSE THE FORWARD END OF SAID SECOND TUBE AND ADAPTED TO OPEN FORWARDLY ONLY, A SINGLE CHAIN PASSING THROUGH SAID TUBES TO BE ATTACHED TO A LOAD, SAID CHAIN COMPRISING LINKS ADJACENT ONES OF WHICH ARE AT RIGHT ANGLES TO EACH OTHER, WHEREBY THE GATE OF SAID FIRST TUBE HOLDS THE CHAIN WHEN SAID PISTONS ARE EXTENDED AND THE GATE OF SAID SECOND TUBE HOLDS THE CHAIN WHEN THE PISTONS ARE RETRACTED.
References Cited (Backward Citations)
US2973566A
Cited
US2996284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |