Hydraulic trailer brake

Details Hydraulic trailer brake Hydraulic trailer brake

1981-11-05

1984-05-29

Butler, Douglas C.

Fluid-pressure and analogous brake systems

With pump

188271, 188294, 188295, B60T 1316

Patent

active

044510942

ABSTRACT:
A hydraulic brake system for ground driven wheels of a trailer includes a rotatable shaft driven by the wheels which in turn drives an axial piston hydraulic pump with a closed loop circuit with pressure control device for controlling the pressure within the circuit for controlling the load on the pump and, hence, the braking of the wheels. The system includes pressurized air control of a metering valve within the hydraulic circuit for controlling the pressure therein and includes air override of the hydraulic pressure for enabling the normally disabled pump.

REFERENCES:
patent: 1741875 (1929-12-01), Paul
patent: 2105712 (1938-01-01), Welch et al.
patent: 2718937 (1955-09-01), Nawojski
patent: 3521729 (1970-07-01), Ravenel
patent: 3882975 (1975-05-01), Jedlitschka et al.

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