US3183671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure braking systems
Assignee: Whitnash PLC
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Filing: 1963-03-06
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Granted: 1965-05-18
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Expires: 1983-03-06
Abstract
No abstract record available.
Inventors
- 👤 Leslie C Chouings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:23
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; B60T13/248; B60T11/00; B60T11/10; B60T11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A FLUID PRESSURE BRAKING SYSTEM FOR VEHICLES COMPRISING A FIRST AND A SECOND MASTER CYLINDER, SAID SECOND MASTER CYLINDER HAVING TWO SPACED SEPARATE OUTLETS FORMING FIRST AND SECOND HYDRAULIC CIRCUITS FOR APPLYING FLUID PRESSURE TO TWO SEPARATE SETS OF BRAKES, AN HYDRAULIC LINE CONNECTING SAID FIRST AND SECOND CYLINDERS TO EACH OTHER FOR SUPPLYING FLUID PRESSURE DIRECTLY TO SAID FIRST CIRCUIT, A FIRST PISTON IN SAID SECOND CYLINDER DISPOSED BETWEEN SAID SPACED OUTLETS FOR SUPPLYING FLUID PRESSURE INDIRECTLY TO SAID SECOND CIRCUIT, A FLUID PRESSURE OPERATED SERVO DEVICE OPERATIVELY CONNECTED TO SAID SECOND MASTER CYLINDER TO ASSIST BRAKE OPERATION, SERVO DEVICE VALVE OPERATIVELY CONNECTED TO SAID SERVO DEVICE FOR OPERATION THEREOF, A BRACKET SECURED TO SAID FIRST MASTER CYLINDER AND SUPPORTING SAID VALVE, A MOVABLE OPERATING ROD MEMBER EXTENDING INTO SAID FIRST MASTER CYLINDER, A MOVABLE OPERATING MEMBER EXTENDING INTO SAID VALVE, A LEVER CONNECTED AT ITS OPPOSITE ENDS TO SAID ROD MEMBER AND VALVE OPERATING MEMBER, A
Claim 2
Dependent Claim
158 words
A FLUID PRESSURE BRAKING SYSTEM FOR VEHICLES COMPRISING A FIRST AND A SECOND MASTER CYLINDER, SAID SECOND MASTER CYLINDER HAVING TWO SPACED SEPARATE OUTLETS FORMING FIRST AND SECOND HYDRAULIC CIRCUITS FOR APPLYING FLUID PRESSURE TO TWO SEPARATE SETS OF BRAKES, AN HYDRAULIC LINE CONNECTING SAID FIRST AND SECOND CYLINDERS TO EACH OTHER FOR SUPPLYING FLUID PRESSURE DIRECTLY TO SAID FIRST CIRCUIT, A FIRST PISTON IN SAID SECOND CYLINDER DISPOSED BETWEEN SAID SPACED OUTLETS FOR SUPPLYING FLUID PRESSURE INDIRECTLY TO SAID SECOND CIRCUIT, A FLUID PRESSURE OPERATED SERVO DEVICE OPERATIVELY CONNECTED TO SAID SECOND MASTER CYLINDER TO ASSIST BRAKE OPERATION, SERVO DEVICE VALVE OPERATIVELY CONNECTED TO SAID SERVO DEVICE FOR OPERATION THEREOF, A BRACKET SECURED TO SAID FIRST MASTER CYLINDER AND SUPPORTING SAID VALVE, A MOVABLE OPERATING ROD MEMBER EXTENDING INTO SAID FIRST MASTER CYLINDER, A MOVABLE OPERATING MEMBER EXTENDING INTO SAID VALVE, A LEVER CONNECTED AT ITS OPPOSITE ENDS TO SAID ROD MEMBER AND VALVE OPERATING MEMBER, A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |