Abstract: A reciprocating type compressor such as a swash plate type compressor includes single headed pistons movably arranged in the cylinder bores formed in the cylinder block. The cylinder block has an extension wall laterally extending therefrom to form a first muffling chamber and the cylinder head has an extension wall laterally extending therefrom to form a second muffling chamber. A valve plate or a gasket has an extension seal portion integrally formed therewith and arranged between the extension walls of the cylinder block and the cylinder head to seal the end rims around the end openings of the first and second muffling chambers together.

Abstract: A variable capacity refrigerant compressor, particularly a single headed piston type variable capacity refrigerant compressor having a framework unit including at least a cylinder block and defining a pulsation suppressing chamber therein fluidly communicating with a discharge chamber of a rear housing and connected to an external refrigerating system, the pulsation suppressing chamber suppressing pulsation in the discharge pressure of the compressed refrigerant before the refrigerant flows toward the refrigerating system, the pulsation suppressing chamber also fluidly communicating with a crank chamber defined by a front housing and the cylinder block so as to supply the crank chamber with the refrigerant at a high pressure an amount of which is regulated by a capacity control valve integrally accommodated in the pulsation suppressing chamber.

Abstract: A variable capacity wobble plate type compressor having an electromagnetic induction type rotation detector detecting an actual rotation of internal rotatable elements in the compressor, which has a flanged disc-like element having apertures formed in the flange of the element and attached to a drive plate support element rotatable with a drive shaft of the compressor and an electromagnetic induction type sensing element cooperable with the apertures of the flanged disc-like element to generate an electric voltage signal having a wave form having symmetrical peak absolute values of different polarities with reference to a reference voltage level and in no way influenced by the existence of a partial balancing rom portion of the drive plate support element.

Abstract: In a wobble plate type compressor having a wobble plate that converts a rotational motion of a rotatable drive plate having a variable angle of inclination to a linear reciprocating motion of a piston, a method of controlling the wobble plate type compressor to control a displacement of the compressor by changing an angle of inclination of the wobble plate according to a pressure difference between a pressure in a crankcase chamber acting on one side of the piston and a suction pressure acting on the other side of the piston. A solenoid-operated control valve is disposed in a pressure control passage extending from a discharge chamber to the crankcase chamber. The control valve is opened and closed to control the above-mentioned pressure difference, thus controlling the angle of inclination of the wobble plate. An opening of the control valve is increased during a period in which the displacement of the compressor is to be reduced, according to a displacement rapid reduction command signal.