Low profile disk brake caliper

Brakes – Wheel – Axially movable brake element or housing therefor

Patent

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Details

188 17, 188 18A, 188 2422, 188 724, 188 731, 188 7346, 188250G, 188370, 188 26, 188344, F16D 5518

Patent

active

052594831

ABSTRACT:
A low profile disk brake caliper in which a disk brake pad is mounted on a flexible diaphragm contained within a piston cavity. Pressurization of the piston cavity by a master cylinder expands the diaphragm and urges the brake pad sidewardly from the housing to engage an adjacent rotor. In the preferred embodiment, the diaphragm is received within a cap seal slidably mounted within the cavity, and the brake pad is mounted removably within a pad carrier attached to the cap. A backing seal is positioned adjacent to the underside of the top wall of the diaphragm and is clamped against the cap by assembly bolts, so that the top wall of the diaphragm is compressed between the cap and backing seal, thereby preventing the top wall from bulging outwardly when the cavity is pressurized. The housing is mounted on the hub of a bicycle front wheel and includes a set screw positioned for camming engagement against the front fork to prevent rotation of the brake caliper relative to the fork. Alternately, the housing includes a torque arm attached to the front fork.

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patent: 5078456 (1992-01-01), Cox

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