Patent
Electrically operated parking brake system
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TLDR
In this paper, a parking brake system is provided which includes a dual solenoid operated valve (20) located in series with the emergency brake control valve (18) of a hydraulically operated brake system.Abstract:
A parking brake system is provided which includes a dual solenoid operated valve (20) located in series with the emergency brake control valve (18) of a hydraulically operated brake system The dual solenoid valve is operable to either one of two mechanical detent positions (38) so that positioning of the valve is retained in the event of loss of power The dual solenoid valve is controlled by the vehicle operator from the transmission console (40) and removes fluid pressure from the brakes when actuated to a PARK position An electronic control unit (46) is provided for sensing the speed of the vehicle and the pressure in the hydraulic line to the brakes and provides a PARK enabling signal when the vehicle speed is below a predetermined amount When a gear is selected at the console the dual solenoid valve is actuated to a position permitting fluid pressure, to be applied to the brakes and effectively returns control of the brakes to the emergency brake control device A pressure sensor (48) is provided in the line (16) to the brakes and is used to provide feedback to the driver and to control transmission shiftingread more
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References
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Patent
Brake installation especially for motor vehicles
TL;DR: In this paper, a brake installation, especially for motor vehicles, which includes at least one pressure reservoir supplied by a pump that is connected by way of a brake valve controlled by a brake pedal or the like with one or several brake cylinders, is described.
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Method and apparatus for controlling wheel slip on differentially mounted wheels
David E. Bullard,Allen D. Myers +1 more
TL;DR: In this article, an anti-spin device was developed for a standard motor vehicle having a pair of driving wheels (8), (9) powered by a drive shaft (10) through a differential (11).
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Brake system with at least one brake circuit
TL;DR: In this article, a brake system with at least one brake circuit consisting of a mechanical brake-pressure control device and an electrical brake pressure control device is presented, without additional expenditure.
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Vehicle brake system
TL;DR: In this paper, a vehicle brake system for operating a spring applied, fluid pressure released brake is described, which requires the operator to perform two operations: moving a manually operated hydraulic valve to the brake release position and closing a normally open, momentary contact switch.
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Fluid pressure responsive and electrically-controlled brake system
TL;DR: In this paper, an electrically-controlled fluid pressure responsive brake system, in which a solenoid valve is installed between a manual brake valve and a parking brake, is described.