Reciprocating compressor

Details Reciprocating compressor Reciprocating compressor

1997-12-30

1999-08-31

Denion, Thomas E.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92 71, F16J 104

Patent

active

059439432

ABSTRACT:
A reciprocating compressor includes a cylinder block, a plurality of cylinder bores extending through the cylinder block, and a plurality of pistons slidably received in the plurality of cylinder bores, respectively. The cylinder block and the pistons are each formed of an aluminum-based material, and each of the plurality of pistons has a peripheral surface thereof covered with a thermal sprayed coating which is formed of a material having a smaller coefficient of linear expansion than one of the aluminum-based material. The thermal sprayed coating covering each of the pistons has at least one slit formed thereacross in a manner such that each of the at least one slit extends from the one end of each of the pistons to the other end of the same whereby part of the peripheral surface of the piston is exposed through the at least one slit.

REFERENCES:
patent: 4519119 (1985-05-01), Nakayama et al.
patent: 4701110 (1987-10-01), Iijima
patent: 5129378 (1992-07-01), Donahue et al.
patent: 5392692 (1995-02-01), Rao et al.
patent: 5516419 (1996-05-01), Pham et al.
patent: 5534358 (1996-07-01), Troup-Packman

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