Patent ID: 8720651

Claim:
A bicycle hydraulic caliper brake apparatus comprising: a first brake arm having a first brake arm mounting portion for mounting to a bicycle frame member for pivoting around a first axis, a first brake pad mounting portion, and a first control interface portion that has a first bearing surface; a second brake arm having a second brake arm mounting portion for mounting to the bicycle frame member for pivoting around a second axis, a second brake pad mounting portion, and a second control interface portion that has a second bearing surface; a hydraulic control device including: a housing defining a hydraulic chamber; a piston unit including a piston disposed in the hydraulic chamber for movement along a piston axis in response to hydraulic pressure; and a hydraulic fluid supply opening in fluid communication with the hydraulic chamber for communicating hydraulic fluid from an external hydraulic fluid source into the hydraulic chamber; wherein the first bearing surface of the first brake arm removably engages the piston unit so that the piston unit can be disengaged from the first bearing surface of the first brake arm solely by pulling the brake arm away from the piston unit without disassembling the piston unit; wherein the second bearing surface of the second brake arm removably engages the housing; wherein at least one of the piston unit or the housing engages the corresponding first or second bearing surface so that the piston unit or the housing rotates at least in part around an axis that is substantially parallel to the corresponding first or second axis; and wherein the housing is carried by the first brake arm and the second brake arm so that the housing moves together with the first brake arm and the second brake arm relative to the bicycle frame member.