Disc brake assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 25, 2001
Grant Date -
N/A
app pub date -
Mar 20, 2000
filing date -
Jun 6, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle brake assembly is disclosed in which a single annular piston body (20) working in a circular bore is used to apply a first one of a pair of annular pad assemblies (102, 103) to a rotor assembly (101). The brake incorporates a ball and ramp mechanism comprising a rotating plate (30) which acts via balls (35) upon an advancement plate (40). The advancement plate (40) acts upon an adjustment ring (50) which is in screw threaded engagement with a peripheral wall of the piston (20). Rotation of the adjustment ring (50) relative to the piston (20) enables brake clearance to be adjusted, and an adjuster (60) is provided to allow automatic rotation of the adjustment ring (50) so as to enable the brake to self adjust. The adjuster (60) preferably comprises a first and second cog (63, 65) connected via a spring clutch (67) and acting between teeth on the rotating plate (30) and teeth on the adjustment plate (50). A manual adjuster (70) is also disclosed. The single actuator ensured even application of pressure around the rotor (101) without the difficulty of synchronising multiple actuators.
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