Truck and trailer braking systems

Details Truck and trailer braking systems Truck and trailer braking systems

1976-11-29

1978-03-14

Reger, Duane A.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

303 40, B60T 822

Patent

active

040788440

ABSTRACT:
An air brake system for truck and trailer combinations comprises a vehicle load sensing valve in the rear wheel brake line of the truck, a truck-mounted relay valve incorporating a piston or piston assembly responsive to truck braking pressures and adapted to actuate valve means to control delivery of pressure to the seervice brake line, and an additional piston, piston assembly or piston/diaphragm assembly in the relay valve which also actuates the valve means and which is responsive on opposite sides to the input and output pressures respectively of the vehicle load sensing valve.

REFERENCES:
patent: 3403944 (1968-10-01), Thirion
patent: 3944294 (1976-03-01), Masuda et al.

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