Low displacement disc brake caliper assemblies

Details Low displacement disc brake caliper assemblies Low displacement disc brake caliper assemblies

1982-03-01

1984-01-31

Butler, Douglas C.

Brakes

Wheel

Axially movable brake element or housing therefor

188347, F16D 5518

Patent

active

044284624

ABSTRACT:
A small take-up piston moves outward during the first increment of hydraulic pressure, taking up the clearance with low fluid displacement because of small size of this piston. As a predetermined pressure level is reached, the take-up and power pistons are locked together and thereafter both pistons move outwardly in unison. This greatly reduces the displacement over a single stage piston traveling the same distance. It allows additional retractive clearance without commensurate displacement required to reactuate the caliper.

REFERENCES:
patent: 2213948 (1940-09-01), Bowen
patent: 3645362 (1972-02-01), Scheibe
patent: 3828894 (1974-08-01), Crossman

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