Patent US3563115A successfully refreshed from Google Patents.
US3563115A
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Hydraulic control system for automatic transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1968-12-11
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Granted: 1971-02-16
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Expires: 1988-12-11
Abstract
Abstract A HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION FOR VEHICLES FOR PERFORMING SUITABLE TIMING RELATION OF ENGAGEMENT AND DISENGAGEMENT OF THE FRICTION ELEMENTS WHILE SHIFTING. A VALVE MEANS IS PROVIDED TO REGULATE ENGAGEMENT AND DISENGAGEMENT TIMING OF AN INTERMEDIATE FRICTION BRAKE AT LOW THROTTLE PRESSURE CONDITIONS.
Inventors
- 👤 Tetsuya Iijima
- 👤 Katsuo Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:24
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H61/00; F16H61/04; F16H61/06; F16H61/065; F16H61/08
Claims Analysis
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |