Double-acting piston for swash-plate type compressors

Details Double-acting piston for swash-plate type compressors Double-acting piston for swash-plate type compressors

1980-11-20

1983-04-12

Freeh, William L.

Expansible chamber devices

Relatively movable working members

Interconnected with common rotatable shaft

417269, 91502, 291564R, F01B 302, F04B 116, B23P 1510

Patent

active

043794254

ABSTRACT:
A double-acting piston is provided which is slidably mounted within a cylinder bore formed within the framework of a swash-plate type compressor, for carrying out a fluid compressing action. The piston comprises a pair of piston heads provided at its opposite ends and an intermediate coupling member coupling the piston heads to each other. The piston heads and the intermediate coupling member are separately fabricated from discrete pieces by means of stamping or the like. The piston heads each comprise a hollow first part extending axially inwardly of the piston and a hollow cylindrical second part extending radially outwardly from an outer end of the first part and serving as a slider. The first and second parts of the piston heads may be separately fabricated from discrete pieces by means of stamping or the like. The first parts of the piston heads have their opposed end faces formed integrally with either ball pockets for receiving balls which engage the swash plate via shoes or semispherical protuberances for engagement with shoes which are arranged in sliding contact with the opposite side surfaces of the swash plate.

REFERENCES:
patent: 1837724 (1931-12-01), Michell
patent: 2434747 (1948-01-01), Ruben
patent: 2673769 (1954-03-01), Morrison et al.
patent: 2896316 (1959-07-01), Schmidt et al.
patent: 3319575 (1967-05-01), Havens
patent: 3369465 (1968-02-01), Harrah
patent: 3538574 (1970-11-01), Toma et al.
patent: 3894904 (1976-10-01), Schlecht

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