Importance

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Abstract

A fluid pressure actuator according to the invention is suitable for use as a master cylinder for a vehicle brake or clutch system. The actuator includes a housing having a bore extending therethrough and at least a primary piston movably disposed within the bore and extending out of the housing through one end thereof. The other end of the bore is closed by a removable end cap. A pressure chamber is defined within the bore between the end cap and the piston. Preferably a cylindrical cartridge is located within the housing and that cartridge defines the bore with which the piston is in engagement. The cartridge is removable from the housing when the end cap is removed and this facilitates maintenance or repair of the master cylinder. A fast fill seal assembly may be included on the piston and the actuator preferably a double piston and pressure chamber assembly with a secondary piston being located between the primary piston and the end cap.

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First Claim