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A shoe for use in a swash-plate type compressor and made of a base material of steel, is slidably disposed between the swash-plate and a steel ball rotatably supported in a recess of a piston and is provided on one side thereof with a lining of copper or a copper alloy for slidably contacting with t

A shoe for use in a swash-plate type compressor and made of a base material of steel, is slidably disposed between the swash-plate and a steel ball rotatably supported in a recess of a piston and is provided on one side thereof with a lining of copper or a copper alloy for slidably contacting with the sliding surface of the swash-plate and further provided on the other side thereof with a covering or a coating layer of a metal selected out of copper, copper alloys, aluminum, aluminum alloys, zinc, zinc alloys, nickel, chromium, and like metals, each of these metals being a material substantially free from seizure with steel, over a substantially spherical concave surface of the shoe thus permitting the steel ball to slidably rotate in relation thereto.

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A shoe for use in a swash-plate type compressor, in which at least one piston slidably fitted in a cylinder barrel therefor is reciprocated by means of the rotative movement of a swash-plate secured to a rotatable shaft with a certain set slant angle, for compressing a gas, said shoe being inserted

A shoe for use in a swash-plate type compressor, in which at least one piston slidably fitted in a cylinder barrel therefor is reciprocated by means of the rotative movement of a swash-plate secured to a rotatable shaft with a certain set slant angle, for compressing a gas, said shoe being inserted between a steel ball, rotatably fitted in a recess of said piston, and said swash-plate, comprising: a base material made of ferrous metal having a flat surface on one side thereof on which surface the shoe is slidable on the swash-plate, and a substantially spherical concavity on the other side thereof in which concavity the ball rotatably slides; and a covering layer comprising one or more layers plated on said concavity in a total thickness of from 2 to 20mwherein the outer layer is copper.