Patent US3608389A successfully refreshed from Google Patents.
US3608389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load responsive gripping device for flexible cable drives and the like
Assignee: Individual
•
Filing: 1969-12-05
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Granted: 1971-09-28
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Expires: 1989-12-05
Abstract
Abstract A DEVICE FOR DRIVING A FLEXIBLE CABLE, ROPE, BELT, OR THE LIKE, AND GRIPPING THE SAME WITH A PRESSURE PROPORTIONALLY RELATED TO THE PULLING FORCE OF THE LOAD IMPOSED THEREON, HAVING A ROTATABLE DRIVING PULLEY AND ROTATABLE PRESSURE APPLYING ROLLER, THE PULLEY AND ROLLER BEING MOUNTED FOR RELATIVE POSITIONAL SHIFTING MOVEMENT, AND, A LEVER ENGAGEABLE BY THE CABLE AND RESPONSIVE TO THE LOAD OF THE PULLING FORCE THEREON TO CAUSE THE PRESSURE ROLLER TO BEAR AGAINST THE CABLE WITH A FORCE PROPORTIONAL RELATED TO THE PULLING LOAD. THE DEVICE MAY BE USED, FOR EXAMPLE, AS A SIMPLIFIED AND EFFICIENT DRIVING MEANS FOR A PORTABLE ROPE SKI TOW.
Inventors
- 👤 George C Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:15
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/60; B66D1/74; B66D1/7415
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |