Power plants – Pressure fluid source and motor – Pulsator
Patent
1983-10-07
1986-09-02
Love, John J.
Power plants
Pressure fluid source and motor
Pulsator
605471, 180272, 180273, 303 19, F15B 700, B60K 2800
Patent
active
046088253
ABSTRACT:
An automatic brake actuator for motor vehicles which operates to activate the vehicle brakes at a predetermined rate and at a predetermined amount of force in predetermined conditions. In a particular embodiment, the brake actuator is controlled by an electrical control system which includes a switch in the driver's seat that automatically senses the weight of the driver when seated. The brake actuator may be connected to the vehicle's vacuum brake system and may be combined therewith by means of a unique electrically operated air control valve that is inserted in the vacuum brake air path. An additional electrically operated constraining air valve may be provided which insures that the brake actuator is activated gradually at (a predetermined rate) in order to avoid sudden hazardous stopping of the vehicle. The brake actuator control may include access to other vehicle functions such as theft alarm, etc. to prevent unwanted operation of the vehicle. The control circuit includes provision for maintaining the brakes activated after the driver re-enters the vehicle and until he operates the accelerator pedal or corrects the problems activating the system (low oil pressure, engine overheating, anti-theft or other conditions) that would allow the vehicle to move forward or backwards again.
REFERENCES:
patent: 3303836 (1967-02-01), Burleigh
patent: 3385636 (1968-05-01), Cruse
patent: 3790223 (1974-02-01), Fontaine
patent: 3830330 (1974-08-01), Fontaine
patent: 4071283 (1978-01-01), Van Hoose
patent: 4309935 (1982-01-01), Belart
Culbreth Eric
Fail Safe Brake Corporation
Love John J.
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