Automatically reversing free-wheel clutch
Abstract
Abstract A NORMALLY DISENGAGED FLUID PRESSURE ENGAGED CLUTCH IS BETWEEN A POWER TAKE-OFF SHAFT CONNECTED TO A TRACTOR ENGINE AND A DRIVEN SHAFT CONNECTED TO TRAILER WHEELS. WHEN THE TRACTOR WHEELS SLIP, THE SPEED OF THE POWER SHAFT BECOMES GREATER THAN THE SPEED OF THE DRIVEN SHAFT, THUS CLOSING SWITCH MEANS ON A LOST MOTION COUPLING IN THE DRIVEN SHAFT. THE SWITCH MEANS OPENS A SOLENOID VALVE TO SUPPLY FLUID PRESSURE TO THE CLUTCH FOR ENGAGING IT WHEREBY THE ENGINE DRIVES THE TRAILER WHEELS FOR ADDITIONAL TRACTION. A REVERSING SWITCH SENSES THE DIRECTION OF ROTATION OF THE POWER SHAFT AND AUTOMATICALLY RENDERS THE DEVICE OPERATIVE IN EITHER DIRECTION OF ROTATION. A MANUAL OVERRIDE SWITCH PERMITS THE CLUTCH TO BE SELECTIVELY ENGAGED AT ANY TIME.
Inventors
- 👤 Sven Olof Ingvar Jonsson
- 👤 Rune Bertil Jonsson
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |