Patent US3354641A successfully refreshed from Google Patents.
US3354641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pedal lift mechanism
Assignee: Motors Liquidation Co
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Filing: 1965-08-26
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Granted: 1967-11-28
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 James O Helvern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:20
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/161; B60T13/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A BRAKE PEDAL LIFT MECHANISM FOR A POWER BRAKE BOOSTER, SAID MECHANISM COMPRISING: A BOOSTER BODY HAVING AN INLET FROM A PRESSURE SOURCE AND AN OUTLET TO A RESERVOIR; VALVE MEANS SLIDABLY DISPOSED IN SAID BOOSTER BODY AND ARRANGED TO CONTROL PRESSURE COMMUNICATION BETWEEN SAID INLET AND OUTLET; FORCE INPUT MEANS ENGAGING SAID VALVE MEANS FOR REPOSITIONING THEREOF; POWER OUTPUT MEANS SLIDABLY CARRIED IN SAID VALVE MEANS AND RESPONSIVE TO PRESSURE ROUTED FROM SAID INLET BY SAID VALVE MEANS TO PROVIDE A POWER BOOST TO A FORCE PROVIDED BY SAID FORCE INPUT MEANS; AND VALVE POSITIONING MEANS FOR MAINTAINING A PREDETERMINED FORCE AGAINST SAID VALVE MEANS FROM ONE SIDE IN SAID BOOSTER BODY WHICH IS NORMALLY OVERCOME BY PRESSURE FROM A PRESSURE SOURCE THEREBY AT A FIRST PREDETERMINED POSITION, SAID VALVE POSITIONING MEANS ARRANGED TO MOVE SAID VALVE MEANS AND SAID FORCE INPUT MEANS TOWARD A SECOND PREDETERMINED POSITION AS PRESSURE AT SAID INLET DECREASES BELOW A MINIMUM WORKING PRESSURE OF THE BOOSTER.
Claim 2
Dependent Claim
163 words
A BRAKE PEDAL LIFT MECHANISM FOR A POWER BRAKE BOOSTER, SAID MECHANISM COMPRISING: A BOOSTER BODY HAVING AN INLET FROM A PRESSURE SOURCE AND AN OUTLET TO A RESERVOIR; VALVE MEANS SLIDABLY DISPOSED IN SAID BOOSTER BODY AND ARRANGED TO CONTROL PRESSURE COMMUNICATION BETWEEN SAID INLET AND OUTLET; FORCE INPUT MEANS ENGAGING SAID VALVE MEANS FOR REPOSITIONING THEREOF; POWER OUTPUT MEANS SLIDABLY CARRIED IN SAID VALVE MEANS AND RESPONSIVE TO PRESSURE ROUTED FROM SAID INLET BY SAID VALVE MEANS TO PROVIDE A POWER BOOST TO A FORCE PROVIDED BY SAID FORCE INPUT MEANS; AND VALVE POSITIONING MEANS FOR MAINTAINING A PREDETERMINED FORCE AGAINST SAID VALVE MEANS FROM ONE SIDE IN SAID BOOSTER BODY WHICH IS NORMALLY OVERCOME BY PRESSURE FROM A PRESSURE SOURCE THEREBY AT A FIRST PREDETERMINED POSITION, SAID VALVE POSITIONING MEANS ARRANGED TO MOVE SAID VALVE MEANS AND SAID FORCE INPUT MEANS TOWARD A SECOND PREDETERMINED POSITION AS PRESSURE AT SAID INLET DECREASES BELOW A MINIMUM WORKING PRESSURE OF THE BOOSTER.
References Cited (Backward Citations)
US3120156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |