Patent US3605525A successfully refreshed from Google Patents.
US3605525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-automatic multiple speed ratio transmission
Assignee: Ford Motor Co
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Filing: 1969-09-08
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Granted: 1971-09-20
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Expires: 1989-09-08
Abstract
Abstract A PLANETARY GEAR TRANSMISSION MECHANISM HAVING A HYDROKINETIC TORQUE CONVERTER, TWO SIMPLE PLANETARY GEAR UNITS AND A SEMI-AUTOMATIC RATIO CONTROL VALVE SYSTEM FOR CONTROLLING SPEED RATIO CHANGES IN THE GEAR UNITS, SAID SYSTEM INCLUDING SIMPLIFIED SHIFT VALVE COMPONENTS AND TIMING VALVE ELEMENTS FOR ESTABLISHING PROPER SHIFT POINTS AS MANUAL TRANSMISSION RATIO SELECTIONS ARE MADE.
Inventors
- 👤 Stanley L Pierce Jr
- 👤 William C Winn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:23
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H61/00; F16H61/02; F16H61/0262; F16H2716/00; F16H2716/04; Y; Y10; Y10S; Y10S74/00; Y10S74/01
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) | 1974-09-19 | 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 |