Patent ID: 7753663

Claim:
A rotary compressor comprising: a cylinder having an annular cylinder chamber; an annular piston disposed in the cylinder chamber eccentrically with respect to the cylinder to divide the cylinder chamber into an outer cylinder chamber and an inner cylinder chamber, the rotary compressor being configured to compress a fluid in the cylinder chamber by moving the cylinder and the annular piston eccentrically relative to each other; a blade disposed in the cylinder chamber to divide each of the outer and inner cylinder chambers into a first chamber and a second chamber; and an end plate having a front face attached to a root end of the annular piston and facing the cylinder chamber the end plate having a discharge passage and a discharge valve configured to open and close the discharge passage, the discharge passage being in fluid communication with the cylinder chamber and being open at a back face of the end plate, the discharge valve being fixed to the end plate by a fastening element, and the end plate further having a fitting hole that receives the fastening element, the fitting hole being aligned with the annular piston as viewed along a longitudinal axis of the fitting hole, and the fitting hole opening at the back face of the end plate.