US3128643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Motors Liquidation Co
•
Filing: 1959-08-20
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Granted: 1964-04-14
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Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Francis O Gadd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:29
CPC Classifications
F; F16; F16D; F16D67/00; F16D67/02; F16D67/04; Y; Y10; Y10S; Y10S74/00; Y10S74/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A TRANSMISSION, A GEAR UNIT PROVIDING A FIRST AND A SECOND RATIO DRIVE, MEANS NORMALLY BIASED TO ACTUATE SAID GEAR UNIT TO ESTABLISH SAID FIRST RATIO, FLUID OPERATED RELEASE MEANS OPERATIVE AT A PREDETERMINED LOW PRESSURE TO COMPLETE DISENGAGEMENT OF SAID FIRST DRIVE AT NORMAL TORQUE VALUES IN RESPONSE TO A PREDETERMINED LOW PRESSURE, FLUID OPERATED APPLY MEANS INOPERATIVE AT SAID PREDETERMINED LOW PRESSURE AND OPERATIVE AT SAID NORMAL TORQUE VALUES AT A PREDETERMINED HIGH PRESSURE TO COMPLETE ESTABLISHMENT OF SAID SECOND DRIVE, A SOURCE OF FLUID UNDER PRESSURE, MEANS TO REGULATE THE PRESSURE OF SAID SOURCE AT A NORMALLY CONSTANT VALUE ABOVE SAID PREDETERMINED HIGH PRESSURE, SHIFT VALVE MEANS OPERATIVE IN A FIRST POSITION TO CONNECT SAID SOURCE TO SAID FLUID OPERATED RELEASE MEANS AND SAID FLUID OPERATED APPLY MEANS AND OPERATIVE IN A SECOND POSITION TO CONNECT SAID FLUID OPERATED RELEASE MEANS AND SAID FLUID OPERATED APPLY MEANS TO EXHAUST, AND MEANS TO PROVIDE A LOW VOLUME SUPPLY OF FLUID
Claim 2
Dependent Claim
163 words
IN A TRANSMISSION, A GEAR UNIT PROVIDING A FIRST AND A SECOND RATIO DRIVE, MEANS NORMALLY BIASED TO ACTUATE SAID GEAR UNIT TO ESTABLISH SAID FIRST RATIO, FLUID OPERATED RELEASE MEANS OPERATIVE AT A PREDETERMINED LOW PRESSURE TO COMPLETE DISENGAGEMENT OF SAID FIRST DRIVE AT NORMAL TORQUE VALUES IN RESPONSE TO A PREDETERMINED LOW PRESSURE, FLUID OPERATED APPLY MEANS INOPERATIVE AT SAID PREDETERMINED LOW PRESSURE AND OPERATIVE AT SAID NORMAL TORQUE VALUES AT A PREDETERMINED HIGH PRESSURE TO COMPLETE ESTABLISHMENT OF SAID SECOND DRIVE, A SOURCE OF FLUID UNDER PRESSURE, MEANS TO REGULATE THE PRESSURE OF SAID SOURCE AT A NORMALLY CONSTANT VALUE ABOVE SAID PREDETERMINED HIGH PRESSURE, SHIFT VALVE MEANS OPERATIVE IN A FIRST POSITION TO CONNECT SAID SOURCE TO SAID FLUID OPERATED RELEASE MEANS AND SAID FLUID OPERATED APPLY MEANS AND OPERATIVE IN A SECOND POSITION TO CONNECT SAID FLUID OPERATED RELEASE MEANS AND SAID FLUID OPERATED APPLY MEANS TO EXHAUST, AND MEANS TO PROVIDE A LOW VOLUME SUPPLY OF FLUID
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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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |