US3278242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety air brake system for automotive vehicles
Assignee: Individual
•
Filing: 1965-08-24
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Granted: 1966-10-11
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Expires: 1985-08-24
Abstract
No abstract record available.
Inventors
- 👤 Nakamura Koichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T13/268; B60T13/36; B60T15/00; B60T15/02; B60T17/00; B60T17/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A SAFETY AIR BRAKE SYSTEM FOR AUTOMOTIVE VEHILCES COMPRISING, IN COMBINATION, AN AIR RESERVOIR HAVING A FIRST AND SECOND CHAMBER, INDEPENDENT OF EACH OTHER; CHECK VALVES ON EACH SAID CHAMBER FOR THE ADMITTANCE OF COMPRESSED AIR; FRONT WHEEL BRAKING MEANS CONNECTED TO SAID FIRST CHAMBER; REAR WHEEL BRAKING MEANS CONNECTED TO SAID SECOND CHAMBER; A RELAY VALVE DISPOSED BETWEEN SAID SECOND CHAMBER AND SAID REAR WHEEL BRAKE MEANS AND OPERATED BY THE ACTUATION OF SAID FRONT WHEEL BRAKING MEANS; A BRAKE VALVE; A BRAKE PEDAL FOR OPERATING SAID BRAKE VALVE, SAID BRAKE VALVE BEING DISPOSED BETWEEN SAID FIRST CHAMBER AND SAID FRONT WHEEL BRAKING MEANS; A SAFETY DEVICE INCLUDING A PISTON NORMALLY SUBJECTED TO THE AIR PRESSURE OF SAID SECOND CHAMBER ON BOTH SIDES; AN AIR VENT FOR SAID REAR WHEEL BRAKING MEANS; A VALVE FOR OPENING AND CLOSING SAID AIR VENT, RESPONSIVE TO THE DISPLACEMENT OF SAID PISTON; A CHECK VALVE FOR PASSING THE COMPRESSED AIR FROM SAID SECOND CHAMBER BY WAY OF SAID RELAY VALVE TO SAID REAR WHEEL BRAKING MEANS WHEN SAID AIR VENT IS
Claim 2
Dependent Claim
178 words
A SAFETY AIR BRAKE SYSTEM FOR AUTOMOTIVE VEHILCES COMPRISING, IN COMBINATION, AN AIR RESERVOIR HAVING A FIRST AND SECOND CHAMBER, INDEPENDENT OF EACH OTHER; CHECK VALVES ON EACH SAID CHAMBER FOR THE ADMITTANCE OF COMPRESSED AIR; FRONT WHEEL BRAKING MEANS CONNECTED TO SAID FIRST CHAMBER; REAR WHEEL BRAKING MEANS CONNECTED TO SAID SECOND CHAMBER; A RELAY VALVE DISPOSED BETWEEN SAID SECOND CHAMBER AND SAID REAR WHEEL BRAKE MEANS AND OPERATED BY THE ACTUATION OF SAID FRONT WHEEL BRAKING MEANS; A BRAKE VALVE; A BRAKE PEDAL FOR OPERATING SAID BRAKE VALVE, SAID BRAKE VALVE BEING DISPOSED BETWEEN SAID FIRST CHAMBER AND SAID FRONT WHEEL BRAKING MEANS; A SAFETY DEVICE INCLUDING A PISTON NORMALLY SUBJECTED TO THE AIR PRESSURE OF SAID SECOND CHAMBER ON BOTH SIDES; AN AIR VENT FOR SAID REAR WHEEL BRAKING MEANS; A VALVE FOR OPENING AND CLOSING SAID AIR VENT, RESPONSIVE TO THE DISPLACEMENT OF SAID PISTON; A CHECK VALVE FOR PASSING THE COMPRESSED AIR FROM SAID SECOND CHAMBER BY WAY OF SAID RELAY VALVE TO SAID REAR WHEEL BRAKING MEANS WHEN SAID AIR VENT IS
References Cited (Backward Citations)
US2874002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |