Fluid-pressure and analogous brake systems – With pump
Patent
1978-04-24
1979-11-20
Reger, Duane A.
Fluid-pressure and analogous brake systems
With pump
188112R, 303 46, 303 63, 251129, B60T 1310, B60T 720
Patent
active
041748697
ABSTRACT:
A brake actuating system especially useful for applying the brakes of a towed vehicle concurrently with application of braking pressure in the towing vehicle is provided which includes a variable valve means interconnected to the towed vehicle's conventional type hydraulic brakes. The variable valve means controls the pressure applied to the brakes of the towed vehicle in response to variable electric current which is supplied via a variable current source which is interconnected to the brakes of the towing vehicle. Also provided, is a breakaway safety device which upon physical separation of the towed vehicle from the towing vehicle causes hydraulic pressure to be supplied automatically to the hydraulic brakes of the towed vehicle.
REFERENCES:
patent: 1792895 (1931-02-01), Cowlishaw
patent: 2876045 (1959-03-01), Kendig
patent: 3077248 (1963-02-01), Wayt
patent: 3114440 (1963-12-01), Perrotto
patent: 3570633 (1971-03-01), Garnett
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