US4633968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake actuating system
Assignee: BACKSTOP Ltd A Co OF ENGLAND
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Filing: 1984-11-29
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Granted: 1987-01-06
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Expires: 2004-11-29
Abstract
Abstract An auxiliary braking device for a vehicle operable when the vehicle is in a reversing condition is disclosed.
Inventors
- 👤 Brian Fisher
- 👤 Raymond R. Westmoreland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:47
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/26; B60T15/00; B60T15/02; B60T15/36; B60T7/00; B60T7/12; B60T7/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
An auxilary braking device for a vehicle operable when the vehicle is in a reversing condition said device comprising: detecting means adapted to be mounted at the rear of a vehicle and comprising a deformable means arranged to generate a signal on contact with an obstruction; first response means operable by a signal generated by placing the vehicle in a reversing condition; second response means operable by said detecting means signal; fluid control valve means adapted to be incorporated in the vehicle braking system and to actuate the vehicle brakes; said first and second responsive means being arranged to control said valve means to cause actuation of the vehicle brakes; and selective means for ensuring that said second response means is operable by said detecting means signal only when the first response means has been operated, wherein said selective means is a valve which normally connects a fluid chamber to atmosphere and is operable to close the connection to atmosphere in response to operation of the second responsive means.
Claim 2
Dependent Claim
169 words
An auxilary braking device for a vehicle operable when the vehicle is in a reversing condition said device comprising: detecting means adapted to be mounted at the rear of a vehicle and comprising a deformable means arranged to generate a signal on contact with an obstruction; first response means operable by a signal generated by placing the vehicle in a reversing condition; second response means operable by said detecting means signal; fluid control valve means adapted to be incorporated in the vehicle braking system and to actuate the vehicle brakes; said first and second responsive means being arranged to control said valve means to cause actuation of the vehicle brakes; and selective means for ensuring that said second response means is operable by said detecting means signal only when the first response means has been operated, wherein said selective means is a valve which normally connects a fluid chamber to atmosphere and is operable to close the connection to atmosphere in response to operation of the second responsive means.
Claim 3
Dependent Claim
17 words
A device according to claim 1 in which the first responsive means is a solenoid operated valve.
Claim 4
Dependent Claim
18 words
A device according to claim 1 in which the second responsive means is a pneumatic pilot operated valve.
Claim 5
Dependent Claim
24 words
A device according to claim 1 in which the brake control valve means is a pneumatic pilot operated valve having inoperative and operated conditions.
Claim 6
Dependent Claim
77 words
A device according to claim 4 in which the valve is pilot operated with pilot return and is arranged so that when the device is incorporated in the vehicle braking system the valve is held positively in its inoperative condition by air pressure during normal operation of the vehicle but upon operation of the first and second responsive means that air pressure is released and air pressure is applied to urge the valve into its operated condition.
Claim 7
Dependent Claim
20 words
A device according to claim 1 in which the valve of the selective means is a pneumatic pilot operated valve.
Claim 8
Independent Claim
167 words
A device for a vehicle operable when the vehicle is in a reversing condition said device comprising: detecting means adapted to be mounted at the rear of a vehicle and comprising a deformable means arranged to generate a signal on contact with an obstruction; first response means operable by a signal generated by placing the vehicle in a reversing condition; second response means operable by said detecting means signal; fluid control valve means adapted to be incorporated in the vehicle braking system and to actuate the vehicle brakes; said first and second response means being arranged to control said valve means to cause actuation of the vehicle brakes; and selective means for ensuring that said second responsive means is operable by said detecting means signal only when the first responsive means has been operated, wherein said selective means is a valve which normally connects a fluid chamber to atmosphere and is operable to close the connection to atmosphere in response to operation of the second responsive means.
Claim 9
Independent Claim
167 words
A device for a vehicle operable when the vehicle is in a reversing condition said device comprising: detecting means adapted to be mounted at the rear of a vehicle and comprising a deformable means arranged to generate a signal on contact with an obstruction; first response means operable by a signal generated by placing the vehicle in a reversing condition; second response means operable by said detecting means signal; fluid control valve means adapted to be incorporated in the vehicle braking system and to actuate the vehicle brakes; said first and second response means being arranged to control said valve means to cause actuation of the vehicle brakes; and selective means for ensuring that said second responsive means is operable by said detecting means signal only when the first responsive means has been operated, wherein said selective means is a valve which normally connects a fluid chamber to atmosphere and is operable to close the connection to atmosphere in response to operation of the second responsive means.
Claim 10
Dependent Claim
27 words
A device according to claim 7 in which the signal-generating portion comprises a fluid chamber adapted to generate a signal in the form of a pressure pulse.
Claim 11
Dependent Claim
29 words
A device according to claim 7 or 8 in which the energy absorbing portion comprises a cantilever which on contact with an obstruction is urged towards the signal-generating portion.
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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |