Patent US3235246A successfully refreshed from Google Patents.
US3235246A
Expired / Lapsed
US
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Safety quick-release coupling device
Assignee: Scientific Products Inc
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Filing: 1964-01-15
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Granted: 1966-02-15
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Expires: 1984-01-15
Abstract
No abstract record available.
Inventors
- 👤 William L Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:27
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/214; E05Y2201/23; E05Y2201/244; E05Y2201/60; E05Y2201/622; E05Y2201/644; E05Y2201/646; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A SAFETY QUICK-RELEASE COUPLING DEVICE FOR SELECTIVELY COUPLING AND UNCOUPLING A LOAD FROM A PRIME MOVER, SAID COUPLING DEVICE COMPRISING AN ELONGATED SUPPORTING GUIDE STRUCTURE, A POWER-DRIVEN FLEXIBLE TRACTION MEMBER MOVABLE ADJACENT AND ALONG A PORTION OF SAID GUIDE STRUCTURE, A DRIVING CARRIAGE SLIDABLY MOUNTED UPON SAID GUIDE STRUCTURE AND CONNECTED TO SAID TRACTION MEMBER FOR PROPULSION THEREBY TO AND FRO ALONG SAID GUIDE STRUCTURE, A DRIVEN CARRIAGE ALSO SLIDABLY MOUNTED ON SAID GUIDE STRUCTURE FOR TRAVEL TO AND FRO THEREALONG INTO SAID OUT OF PROXIMITY TO SAID DRIVING CARRIAGE, ONE OF SAID CARRIAGES HAVING A COUPLING PORTION INCLUDING AN EXTENSION PROJECTING TOWARD THE OTHER CARRIAGE APPROXIMATELY PARALLEL TO SAID GUIDE STRUCTURE AND SAID OTHER CARRIAGE HAVING A COU-
Claim 2
Dependent Claim
119 words
A SAFETY QUICK-RELEASE COUPLING DEVICE FOR SELECTIVELY COUPLING AND UNCOUPLING A LOAD FROM A PRIME MOVER, SAID COUPLING DEVICE COMPRISING AN ELONGATED SUPPORTING GUIDE STRUCTURE, A POWER-DRIVEN FLEXIBLE TRACTION MEMBER MOVABLE ADJACENT AND ALONG A PORTION OF SAID GUIDE STRUCTURE, A DRIVING CARRIAGE SLIDABLY MOUNTED UPON SAID GUIDE STRUCTURE AND CONNECTED TO SAID TRACTION MEMBER FOR PROPULSION THEREBY TO AND FRO ALONG SAID GUIDE STRUCTURE, A DRIVEN CARRIAGE ALSO SLIDABLY MOUNTED ON SAID GUIDE STRUCTURE FOR TRAVEL TO AND FRO THEREALONG INTO SAID OUT OF PROXIMITY TO SAID DRIVING CARRIAGE, ONE OF SAID CARRIAGES HAVING A COUPLING PORTION INCLUDING AN EXTENSION PROJECTING TOWARD THE OTHER CARRIAGE APPROXIMATELY PARALLEL TO SAID GUIDE STRUCTURE AND SAID OTHER CARRIAGE HAVING A COU-
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |