Piston for compressors including a restrictor to prevent the pis

Details Piston for compressors including a restrictor to prevent the pis Piston for compressors including a restrictor to prevent the pis

1997-07-14

1998-12-01

Denion, Thomas E.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

92 71, 92165PR, 184 617, F01B 3110

Patent

active

058424067

ABSTRACT:
A piston for use in a compressor that compresses gas containing lubricating oil is disclosed. The compressor includes a housing having a crank chamber and cylinder bores for accommodating the pistons. A swash plate is located in the crank chamber and is supported on a drive shaft. The swash plate is operably connected to the pistons by shoes to convert the rotation of the drive shaft to reciprocation of each piston. Each piston has a head for compressing the gas supplied to the cylinder bore and a skirt projecting from the head toward the crank chamber and connected to the swash plate. A restrictor provided on the skirt slidably contacts an inner surface of the housing to prevent the piston from rotating in the cylinder bore. A sloped surface extends along the edge of an end face of the restrictor. The sloped surface guides the oil in the crank chamber toward the shoes when the piston moves from a top dead center position to a bottom dead center position.

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patent: 5720217 (1998-02-01), Asplund et al.
patent: 5771775 (1998-06-01), Ota et al.

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