Patent ID: 6422354
Filing Date: 2002-07-23
Classification: F16D

Abstract:
A disc brake caliper with an integral parking brake, said caliper comprising:a caliper housing defining a cavity; a piston defining an internal recess and having an internal bearing surface therearound, said piston being axially translatable within said cavity; at least one brake pad affixed to either of said piston or said housing; and a parking brake mechanism within said cavity and interposed between a portion of said housing and said piston, said parking brake mechanism including: a thrust pin substantially axially aligned with said piston and rotatable within said housing, said thrust pin having one end thereof received in said piston internal recess, said one end of said thrust pin freely movable with respect to said piston and not bearing thereupon; a first radial clutch engagable with said thrust pin; and a second axial clutch operable upon said internal bearing surface of said piston wherein rotation of said thrust pin in a first direction causes engagement of said first radial clutch and said second axial clutch causing axial displacement of said piston, and rotation of said thrust pin in an opposite direction causes disengagement of said first and said second clutches.