Braking system for towed vehicles

Details Braking system for towed vehicles Braking system for towed vehicles

1980-11-19

1983-08-16

Reger, Duane A.

Fluid-pressure and analogous brake systems

Multiple control

Fluid and electric

188 3R, 303 7, B60T 720

Patent

active

043987710

ABSTRACT:
A braking system for automatically braking a towed vehicle coupled to a towing vehicle having an electrical brake control circuit and a vacuum line wherein the towed vehicle is provided with a normally closed solenoid valve for connecting both a vacuum reservoir in the towed vehicle and the vacuum line in the towing vehicle with a vacuum responsive bellows operatively connected to the brake pedal in the towed vehicle with the solenoid operated valve electrically connected through a normally open breakaway switch to the battery whereby the operation of the braking system on the towing vehicle is accompanied by an actuation of the solenoid operated valve and the application of a vacuum to the bellows for concomitant operation of the brake pedal on the towed vehicle and upon a decoupling of the towed and towing vehicles, a similar actuation of the solenoid operated valve when the breakaway switch closes to apply vacuum to the bellows for actuation of the brake pedal to brake the decoupled towed vehicle.

REFERENCES:
patent: 2169668 (1939-08-01), Thomas
patent: 2711228 (1955-06-01), Shank
patent: 3117822 (1964-01-01), Blair
patent: 3768870 (1973-10-01), Howard

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