US3078740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic transmission
Assignee: Ford Motor Co
•
Filing: 1956-08-29
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Granted: 1963-02-26
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Expires: 1976-08-29
Abstract
No abstract record available.
Inventors
- 👤 Vladimir J Jandasek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/0021; F16H61/0025; F16H47/00; F16H47/06; F16H47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A MULTIPLE SPEED POWER TRANSMISSION MECHANISM FOR USE WITH AN ENGINE, A DRIVING MEMBER, A DRIVEN MEMBER, A PLURALITY OF GEAR ELEMENTS DRIVABLY CONNECTING SAID DRIVING AND DRIVEN MEMBERS, CLUTCH AND BRAKE MEANS FOR CONTROLLING THE RELATIVE MOTION OF SAID GEAR ELEMENTS TO EFFECT VARIATIONS IN THE TRANSMISSION GEAR RATIO, SAID CLUTCH AND BRAKE MEANS INCLUDING A MECHANICAL BRAKE ADAPTED TO SELECTIVELY HOLD ONE OF SAID GEAR ELEMENTS STATIONARY, FLUID PRESSURE OPERATED ACTUATORS ADAPTED TO ENERGIZE SAID CLUTCH AND BRAKE MEANS, A CONTROL VALVE CIRCUIT INCLUDING A FIRST PUMP, A SECOND PUMP DRIVABLY CONNECTED TO SAID DRIVEN MEMBER, AND CONDUIT STRUCTURE INTERCONNECTING SAID ACTUATORS AND SAID PUMPS INCLUDING CONTROL VALVE ELEMENTS FOR SELECTIVELY DISTRIBUTING FLUID PRESSURE TO VARIOUS PORTIONS OF SAID CIRCUIT TO SEQUENTIALLY ENERGIZE SAID ACTUATORS AND TO ESTABLISH A PREDETERMINED SHIFT SEQUENCE, SAID MECHANICAL BRAKE THEREBY BEING ENERGIZED DURING OPERATION IN ONE GEAR RATIO SAID FIRST PUMP BEING DRIVABLY CONNECTED TO SAID ONE GEAR ELEMENT.
Claim 2
Dependent Claim
158 words
IN A MULTIPLE SPEED POWER TRANSMISSION MECHANISM FOR USE WITH AN ENGINE, A DRIVING MEMBER, A DRIVEN MEMBER, A PLURALITY OF GEAR ELEMENTS DRIVABLY CONNECTING SAID DRIVING AND DRIVEN MEMBERS, CLUTCH AND BRAKE MEANS FOR CONTROLLING THE RELATIVE MOTION OF SAID GEAR ELEMENTS TO EFFECT VARIATIONS IN THE TRANSMISSION GEAR RATIO, SAID CLUTCH AND BRAKE MEANS INCLUDING A MECHANICAL BRAKE ADAPTED TO SELECTIVELY HOLD ONE OF SAID GEAR ELEMENTS STATIONARY, FLUID PRESSURE OPERATED ACTUATORS ADAPTED TO ENERGIZE SAID CLUTCH AND BRAKE MEANS, A CONTROL VALVE CIRCUIT INCLUDING A FIRST PUMP, A SECOND PUMP DRIVABLY CONNECTED TO SAID DRIVEN MEMBER, AND CONDUIT STRUCTURE INTERCONNECTING SAID ACTUATORS AND SAID PUMPS INCLUDING CONTROL VALVE ELEMENTS FOR SELECTIVELY DISTRIBUTING FLUID PRESSURE TO VARIOUS PORTIONS OF SAID CIRCUIT TO SEQUENTIALLY ENERGIZE SAID ACTUATORS AND TO ESTABLISH A PREDETERMINED SHIFT SEQUENCE, SAID MECHANICAL BRAKE THEREBY BEING ENERGIZED DURING OPERATION IN ONE GEAR RATIO SAID FIRST PUMP BEING DRIVABLY CONNECTED TO SAID ONE GEAR ELEMENT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |