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A shoe-and-socket joint, which is incorporated into a swash plate type compressor as a drive force transmitting unit arranged between a rotatable swash plate and each of a plurality of reciprocal pistons, has a shoe provided with a spherically formed contact face having a radius R2 and a spherically

A shoe-and-socket joint, which is incorporated into a swash plate type compressor as a drive force transmitting unit arranged between a rotatable swash plate and each of a plurality of reciprocal pistons, has a shoe provided with a spherically formed contact face having a radius R2 and a spherically formed socket recessed in each of the pistons and having a radius R1, the radius R1 being 20 to 150 microns larger than the radius R2, to provide a clearance between the shoe surface and the surface of the socket into which an oil-containing refrigerant can flow to lubricate the shoe surface and the surface of the socket.

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A shoe-and-socket joint incorporated into a swash plate type compressor for transmitting an axial force from a rotating swash plate supported on a drive shaft to a piston of the compressor, which piston applies an axially reciprocal compression effect to a refrigerant containing a lubricating oil co

A shoe-and-socket joint incorporated into a swash plate type compressor for transmitting an axial force from a rotating swash plate supported on a drive shaft to a piston of the compressor, which piston applies an axially reciprocal compression effect to a refrigerant containing a lubricating oil component within a cylinder bore of the compressor, comprising: a shoe having a flat contact face in sliding contact with said swash plate and a spherical body provided with a substantially spherical contact face arranged opposite to said flat contact face; and, a socket in the shape of a spherically recessed face formed in said piston and in sliding contact with said substantially spherical contact face of said spherical body of said shoe, said spherically recessed face of said socket of said piston having a radius 20 to 150 microns larger than that of said spherical contact face of said spherical body of said shoe.