Patent US3288540A successfully refreshed from Google Patents.
US3288540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling the hydraulic braking of the wheels of a vehicle
Assignee: RECH ETUDES PROD
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Filing: 1964-10-27
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Granted: 1966-11-29
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Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Lucien Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:09
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/325; B60T8/17; B60T8/176; B60T8/1763; B60T8/17633; B60T8/3255; B60T8/326; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A SYSTEM FOR CONTROLLING THE HYDRAULIC BRAKING OF A WHEELED VEHICLE, COMPRISING MEANS FOR PERIODICALLY VARYING THE BRAKING AND THE RELEASE OF EACH WHEEL, FOR MEASURING THE ACCELERATION OF ONE WHEEL DURING THE RELEASE AND FOR CONTROLLING IN DEPENDENCE ON THIS MEASUREMENT THE VALUE OF THE FOLLOWING BRAKING, FOR MEASURING THE DECELERATION OF ONE WHEEL DURING THE BRAKING AND FOR CONTROLLING IN DEPENDENCE ON THIS MEASURMENT THE VALUE OF THE FOLLOWING RELEASE, SAID MEANS COMPRISING A SWITCH UNIT CONSTITUTED BY A PLURALITY OF CAM SWITCHES, AN ACCELEROMETER ON ONE OF THE FRONT WHEELS, AN ACCELEROMETER ON ONE OF THE REAR WHEELS, A SERVO-DISTRIBUTOR FOR SUPPLYING PRESSURE FLUID TO THE BRAKES OF THE FRONT WHEEL, A SERVO-DISTRIBUTOR FOR SUPPLYING PRESSURE FLUID TO THE BRAKES OF THE REAR WHEELS, AND A GROUP OF FOUR MEMORIES CONSTITUTED BY FOUR RESISTANCE-CAPACITY CIRCUITS, SAID SWITCH UNIT BEING CONNECTED TO SAID SERVO-DISTRIBUTORS FOR APPLYING THE FRONT BRAKES AND RELEASING THE REAR BRAKES AND VICE VERSA TWO OF THE MEMORIES CONTROLED BY SAID SWITCH UNIT RECORDING DURING THE BRAKE RELEASE THE MEASUREMENTS SUPPLIED RESPECTIVELY BY THE ACCELEROMETERS AND SENDING DURING THE BRAKING SAID MEASUREMENTS RESPECTIVELY TO THE SERVO-DISTRIBUTORS, THE TWO OTHER MEMORIES CONTROLLED BY SAID SWITCH UNIT RECORDING DURING THE BRAKING THE MEASUREMENTS SUPPLIED RESPECTIVELY BY THE ACCELEROMETERS AND SENDING DURING THE BRAKE RELEASE THESE MEASUREMENTS RESPECTIVELY TO TE SERVO-DISTRIBUTORS.
Claim 2
Independent Claim
223 words
A SYSTEM FOR CONTROLLING THE HYDRAULIC BRAKING OF A WHEELED VEHICLE, COMPRISING MEANS FOR PERIODICALLY VARYING THE BRAKING AND THE RELEASE OF EACH WHEEL, FOR MEASURING THE ACCELERATION OF ONE WHEEL DURING THE RELEASE AND FOR CONTROLLING IN DEPENDENCE ON THIS MEASUREMENT THE VALUE OF THE FOLLOWING BRAKING, FOR MEASURING THE DECELERATION OF ONE WHEEL DURING THE BRAKING AND FOR CONTROLLING IN DEPENDENCE ON THIS MEASURMENT THE VALUE OF THE FOLLOWING RELEASE, SAID MEANS COMPRISING A SWITCH UNIT CONSTITUTED BY A PLURALITY OF CAM SWITCHES, AN ACCELEROMETER ON ONE OF THE FRONT WHEELS, AN ACCELEROMETER ON ONE OF THE REAR WHEELS, A SERVO-DISTRIBUTOR FOR SUPPLYING PRESSURE FLUID TO THE BRAKES OF THE FRONT WHEEL, A SERVO-DISTRIBUTOR FOR SUPPLYING PRESSURE FLUID TO THE BRAKES OF THE REAR WHEELS, AND A GROUP OF FOUR MEMORIES CONSTITUTED BY FOUR RESISTANCE-CAPACITY CIRCUITS, SAID SWITCH UNIT BEING CONNECTED TO SAID SERVO-DISTRIBUTORS FOR APPLYING THE FRONT BRAKES AND RELEASING THE REAR BRAKES AND VICE VERSA TWO OF THE MEMORIES CONTROLED BY SAID SWITCH UNIT RECORDING DURING THE BRAKE RELEASE THE MEASUREMENTS SUPPLIED RESPECTIVELY BY THE ACCELEROMETERS AND SENDING DURING THE BRAKING SAID MEASUREMENTS RESPECTIVELY TO THE SERVO-DISTRIBUTORS, THE TWO OTHER MEMORIES CONTROLLED BY SAID SWITCH UNIT RECORDING DURING THE BRAKING THE MEASUREMENTS SUPPLIED RESPECTIVELY BY THE ACCELEROMETERS AND SENDING DURING THE BRAKE RELEASE THESE MEASUREMENTS RESPECTIVELY TO TE SERVO-DISTRIBUTORS.
References Cited (Backward Citations)
US2184568A
Cited
US2249868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |