Patent US3334548A successfully refreshed from Google Patents.
US3334548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle brake system
Assignee: Motors Liquidation Co
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Filing: 1963-04-26
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Granted: 1967-08-08
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Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Robert M Van House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:18
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/142; B60T13/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN A VEHICLE BRAKING SYSTEM, A FLUID PRESSURE OPERATED SERVOMOTOR FOR ACTUATING A MASTER CYLINDER ASSEMBLY, A SOURCE OF SUPERATMOSPHERIC FLUID PRESSURE, A VALVE ASSEMBLY CONNECTED BETWEEN SAID PRESSURE SOURCE AND SAID SERVOMOTOR FOR CONTROLLING FLUID PRESSURE TO SAID SERVOMOTOR, A BRAKE PEDAL ASSEMBLY CONNECTED TO SAID VALVE ASSEMBLY AND SAID SERVOMOTOR AND HAVING A HIGH PEDAL POSITION FOR MANUALLY ACTUATING THE MASTER CYLINDER ASSEMBLY THROUGH SAID SERVOMOTOR AND A LOW PEDAL POSITION FOR ACTUATING SAID VALVE ASSEMBLY TO CONTROL SAID SERVOMOTOR, SAID BRAKE PEDAL ASSEMBLY INCLUDING A FLUID PRESSURE OPERATED PEDAL POSITIONING SERVOMOTOR ENERGIZED BY FLUID PRESSURE FROM SAID SOURCE TO MAINTAIN SAID LOW PEDAL POSITION SO LONG AS FLUID AT A PREDETERMINED MINIMUM PRESSURE IS SUPPLIED TO SAID VALVE ASSEMBLY AND HAVING MEANS FOR POSITIONING SAID PEDAL ASSEMBLY IN SAID HIGH PEDAL POSITION UPON DECREASE OF SUPPLY FLUID PRESSURE BELOW THE PREDETERMINED MINIMUM.
Claim 2
Dependent Claim
145 words
IN A VEHICLE BRAKING SYSTEM, A FLUID PRESSURE OPERATED SERVOMOTOR FOR ACTUATING A MASTER CYLINDER ASSEMBLY, A SOURCE OF SUPERATMOSPHERIC FLUID PRESSURE, A VALVE ASSEMBLY CONNECTED BETWEEN SAID PRESSURE SOURCE AND SAID SERVOMOTOR FOR CONTROLLING FLUID PRESSURE TO SAID SERVOMOTOR, A BRAKE PEDAL ASSEMBLY CONNECTED TO SAID VALVE ASSEMBLY AND SAID SERVOMOTOR AND HAVING A HIGH PEDAL POSITION FOR MANUALLY ACTUATING THE MASTER CYLINDER ASSEMBLY THROUGH SAID SERVOMOTOR AND A LOW PEDAL POSITION FOR ACTUATING SAID VALVE ASSEMBLY TO CONTROL SAID SERVOMOTOR, SAID BRAKE PEDAL ASSEMBLY INCLUDING A FLUID PRESSURE OPERATED PEDAL POSITIONING SERVOMOTOR ENERGIZED BY FLUID PRESSURE FROM SAID SOURCE TO MAINTAIN SAID LOW PEDAL POSITION SO LONG AS FLUID AT A PREDETERMINED MINIMUM PRESSURE IS SUPPLIED TO SAID VALVE ASSEMBLY AND HAVING MEANS FOR POSITIONING SAID PEDAL ASSEMBLY IN SAID HIGH PEDAL POSITION UPON DECREASE OF SUPPLY FLUID PRESSURE BELOW THE PREDETERMINED MINIMUM.
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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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |