Auxiliary braking system
Abstract
Abstract METHOD AND APPARATUS FOR APPLYING BRAKES, THE APPARATUS INCLUDING AN ELECTRICALLY DRIVEN DISPLACEABLE PLUNGER SITUATED SO AS TO OPPOSE THE ACTUATING ROD OF AN AIR BRAKE SYSTEM AND, WHEN THE PLUNGER IS ADVANCED INTO ENGAGEMENT WITH THE ACTUATING ROD, THE BRAKES OF A VEHICLE WILL BE APPLIED INDEPENDENT OF THE PRESENCE OF PRESSURIZED AIR. IN ANOTHER EMBODIMENT, A HYDRAULIC FLUID MASTER CYLINDER IS PROVIDED WITH A FLOAT WHICH INCICATES THE AMOUNT OF FLUID IN THE MASTER CYLINDER RESERVOIR. AN ELECTRICALLY DRIVEN ROD ADVANCES OR RETRACTS A WEDGE NUT HAVING OPPOSED RAMP SURFACES SO THAT THE SPACING BETWEEN PUSH ARMS, ATTACHED TO THE BRAKE SHOES OF A HYDRAULIC BRAKING SYSTEM, IS VARIED BETWEEN A FULLY APPLIED AND A FULLY RELEASED BRAKING CONDITION.
Inventors
- 👤 Heber Jay Woodward
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |