Slant plate type compressor with capacity adjusting mechanism and rotating swash plate

A refrigerant compressor including a compressor housing having a cylinder block with a plurality of cylinders and a crank chamber adjacent said cylinder block, a piston slidably received within each of the cylinders, a swash plate for reciprocating said cylinders, said swash plate being driven by an input drive shaft and being supported in said housing for both rotational and nutational motion, a front end plate disposed on said compressor housing for rotatably supporting said drive shaft, a rear end plate disposed on the opposite end of said compressor housing and having a suction chamber and a discharge chamber, a passage means to communication between said crank chamber and said suction chamber, valve means for controlling the closing and opening of said passage means, a spherical bush supporting said swash plate for said nutational and rotational motion on said drive shaft, and a hinge coupling mechanism drivingly connecting said swash plate to said input drive shaft to rotate said swash plate, said hinge coupling mechanism including means for changing the slant angle of an inclined surface of said swash plate in response to changes in pressure in said crank chamber.