Patent US3304128A successfully refreshed from Google Patents.
US3304128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic braking systems for vehicles
Assignee: Girling Ltd
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Filing: 1964-08-17
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Granted: 1967-02-14
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Expires: 1984-08-17
Abstract
No abstract record available.
Inventors
- 👤 Farr Glyn Phillip Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:23
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
MEANS FOR CONTROLLING THE RATIO OF THE BRAKING EFFORTS APPLIED TO DIFFERENT PAIRS OR SETS OF WHEELS OF A VEHICLE COMPRISING A CHAMBER OR HOUSING ADAPTED TO BE CONNECTED TO A MASTER CYLINER AND TO THE SLAVE CYLINDERS OF THE BRAKES ON TWO PAIRS OR SETS OF WHEELS RESPECTIVELY AND INCORPORATING MEANS FOR APPLYING AN INTENSIFIED PRESSURE TO THE SLAVE CYLINDERS OF THE BRAKES ON ONE PAIR OF SET OF WHEELS WHEN THE MASTER CYLINDER PRESSURE EXCEEDS A PREDETERMINED VALUE AND FURTHER MEANS FOR CUTTING OFF COMMUNICATION BETWEEN THE MASTER CYLINDER AND THE SLAVE CYLINDERS OF THE BRAKES ON THE OTHER PAIR OR SET OF WHEELS WHEN THE MASTER CYLINDER PRESSURE EXCEEDS ANOTHER PREDETERMINED VALUE.
Claim 2
Dependent Claim
115 words
MEANS FOR CONTROLLING THE RATIO OF THE BRAKING EFFORTS APPLIED TO DIFFERENT PAIRS OR SETS OF WHEELS OF A VEHICLE COMPRISING A CHAMBER OR HOUSING ADAPTED TO BE CONNECTED TO A MASTER CYLINER AND TO THE SLAVE CYLINDERS OF THE BRAKES ON TWO PAIRS OR SETS OF WHEELS RESPECTIVELY AND INCORPORATING MEANS FOR APPLYING AN INTENSIFIED PRESSURE TO THE SLAVE CYLINDERS OF THE BRAKES ON ONE PAIR OF SET OF WHEELS WHEN THE MASTER CYLINDER PRESSURE EXCEEDS A PREDETERMINED VALUE AND FURTHER MEANS FOR CUTTING OFF COMMUNICATION BETWEEN THE MASTER CYLINDER AND THE SLAVE CYLINDERS OF THE BRAKES ON THE OTHER PAIR OR SET OF WHEELS WHEN THE MASTER CYLINDER PRESSURE EXCEEDS ANOTHER PREDETERMINED VALUE.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |