US3289796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load responsive brake system
Assignee: Automobiles Citroen SA
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Filing: 1965-07-06
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Granted: 1966-12-06
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Cadiou Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:31
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/18; B60T8/1837
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A HYDRAULIC SERVO-ACTION BRAKING SYSTEM WHEREIN THE BRAKING FLUID DISTRIBUTION IS COMPENSATED AS A FUNCTION OF THE LOAD DISTRIBUTION OF THE FRONT AND REAR AXLES OF THE WHEELS OF A VEHICLE, WHICH COMPRISES A PRESSUREFLUID DISTRIBUTOR UNIT, A PAIR OF METERING SLIDE VALVES IN SAID DISTRIBUTOR SUPPLIED WITH PRESSURE-FLUID, SAID VALVES COMPRISING A HIGH-PRESSURE SLIDE VALVE AND A LOW-PRESSURE SLIDE VALVE, A COMPENSATOR LEVER REGULATING THE FORCE APPLIED TO SAID SLIDE VALVES, MEANS RESPONSIVE TO THE LOAD DISTRIBUTION ON SAID FRONT AND REAR AXLES AND ADAPTED TO ACT ACCORDINGLY ON SAID COMPENSATOR LEVER, A BRAKE PEDAL ACTING UPON SAID COMPENSATOR LEVER TO VARY THE FLUID PRESSURE IN EACH SLIDE VALVE, A BRAKE CYLINDER FOR EACH AXLE, A PISTON SLIDING FREELY IN SAID CYLINDER, A COMPRESSED BRAKE SHOE ACTUATED BY SAID PISTON, ANOTHER BRAKE CYLINDER, A PISTON SLIDING FREELY IN SAID ANOTHER CYLINDER, A TENSIONED BRAKE SHOE ACTUATED BY SAID LAST-NAMED PISTON, A PIPE LINE CONNECTING SAID ANOTHER CYLINDER TO THE HIGH-PRESSURE SLIDE VALVE OF SAID DISTRIBUTOR, AND ANOTHER PIPE LINE CONNECTING THE FIRST MENTIONED CYLINDER TO THE LOW-PRESSURE SLIDE VALVE OF SAID DISTRIBUTOR.
Claim 2
Dependent Claim
183 words
A HYDRAULIC SERVO-ACTION BRAKING SYSTEM WHEREIN THE BRAKING FLUID DISTRIBUTION IS COMPENSATED AS A FUNCTION OF THE LOAD DISTRIBUTION OF THE FRONT AND REAR AXLES OF THE WHEELS OF A VEHICLE, WHICH COMPRISES A PRESSUREFLUID DISTRIBUTOR UNIT, A PAIR OF METERING SLIDE VALVES IN SAID DISTRIBUTOR SUPPLIED WITH PRESSURE-FLUID, SAID VALVES COMPRISING A HIGH-PRESSURE SLIDE VALVE AND A LOW-PRESSURE SLIDE VALVE, A COMPENSATOR LEVER REGULATING THE FORCE APPLIED TO SAID SLIDE VALVES, MEANS RESPONSIVE TO THE LOAD DISTRIBUTION ON SAID FRONT AND REAR AXLES AND ADAPTED TO ACT ACCORDINGLY ON SAID COMPENSATOR LEVER, A BRAKE PEDAL ACTING UPON SAID COMPENSATOR LEVER TO VARY THE FLUID PRESSURE IN EACH SLIDE VALVE, A BRAKE CYLINDER FOR EACH AXLE, A PISTON SLIDING FREELY IN SAID CYLINDER, A COMPRESSED BRAKE SHOE ACTUATED BY SAID PISTON, ANOTHER BRAKE CYLINDER, A PISTON SLIDING FREELY IN SAID ANOTHER CYLINDER, A TENSIONED BRAKE SHOE ACTUATED BY SAID LAST-NAMED PISTON, A PIPE LINE CONNECTING SAID ANOTHER CYLINDER TO THE HIGH-PRESSURE SLIDE VALVE OF SAID DISTRIBUTOR, AND ANOTHER PIPE LINE CONNECTING THE FIRST MENTIONED CYLINDER TO THE LOW-PRESSURE SLIDE VALVE OF SAID DISTRIBUTOR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |