Patent US3572169A successfully refreshed from Google Patents.
US3572169A
Expired / Lapsed
US
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Planetary gear transmission mechanism having an overdrive speed ratio,a direct-drive ratio and multiple under-drive ratios
Assignee: Ford Motor Co
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Filing: 1969-11-21
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Granted: 1971-03-23
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Expires: 1989-11-21
Abstract
Abstract A PLANETARY GEAR SYSTEM HAVING COMPOUND PLANETARY GEARING INCLUDING TWO SIMPLE PLANETARY GEAR UNITS CAPABLE OF ESTABLISHING TWO UNDER-DRIVE RATIOS, AN OVERDRIVE PLANETARY GEAR UNIT INCLUDING GEAR ELEMENTS THAT ARE COMMON TO ONE OF THE SIMPLE PLANETARY GEAR UNITS, AND A SIMPLIFIED CLUTCH-AND-BRAKE SYSTEM FOR CONTROLLING THE RELATIVE MOTION OF THE ELEMENTS OF THE GEAR UNITS TO ESTABLISH THE FORWARD DRIVE RATIOS AS WELL AS A REVERSE SPEED RATIO.
Inventors
- 👤 Alan R Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:02
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/08; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |