Brake having a pressure responsive slack adjuster

Details Brake having a pressure responsive slack adjuster Brake having a pressure responsive slack adjuster

1996-02-26

1997-12-02

Poon, Peter M.

Brakes

Position adjusters

Slack

188196V, 188202, F16D 6518

Patent

active

056925867

ABSTRACT:
A brake device equipped with an actuator having a power-transmission member generating a pushing force by receiving a drive force so as to advance. A pressure-detection device is provided for detecting the reaction pressure being applied to the power-transmission member and a clearance controller is provided for making the power-transmission member perform a return stroke. A brake shoe is attached to the power-transmission member and generates a braking force on the wheel tread surface. Such clearance controller is provided with a stroke memory unit which detects when the pressure signal from the pressure-detection device has reached a reference value when the pushing force of the power-transmission member is output and memorizes the stroke position of the power-transmission member as the reference stroke position. A computational processor determines the return stroke position by which the power-transmission member is separated from the wheel tread surface and the clearance stroke fraction established in advance using the reference stroke position, when the pushing force is released.

REFERENCES:
patent: 4756391 (1988-07-01), Agarwal et al.
patent: 4993521 (1991-02-01), Asano et al.

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