Patent ID: 7194948

Claim:
An adjustor for a secondary pump of a brake, the adjustor comprising: a stationary plate attached to the secondary pump; a cylinder attached to the stationary plate; a piston movable in the cylinder, wherein the cylinder defines a space for containing the piston; a rod extended through the cylinder and connected to the piston; a handle connected to the cylinder so that pressurized air can enter the cylinder through the handle and drive the piston and hence the rod while going in the cylinder; an inlet valve put on the handle in order to control the inlet of the pressurized air into the cylinder through the cylinder handle; and an outlet valve put on the handle in order to control the release of the pressurized air from the cylinder through the cylinder handle, wherein the handle comprises a first channel communicated with the space of the cylinder, a first space communicated with the first channel in order to contain the inlet valve, a second channel communicated with the first space on one hand and for communication with an air compressor on the other hand, a third channel communicated with the first channel, and a second space communicated with the third channel in order to contain the outlet valve.