Rotary compressor having a protective coating which is finish gr

Details Rotary compressor having a protective coating which is finish gr Rotary compressor having a protective coating which is finish gr

1997-06-17

1999-09-14

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

With relatively movable partition member

418178, 295272, 29888025, F04C 18356

Patent

active

059512733

ABSTRACT:
A tip of a vane slid with a rolling piston is mechanically finish-ground in the direction of the sliding movement between the vane and the rolling piston, and provided with a protective coating film being proof against abrasion which is composed of non-ferrous metal formed by a physical vapor deposition method, or composed of a chromium nitride compound formed by an ion plating method. Hydrofluorocarbon is employed as a refrigerant, and ester oil being compatible with the refrigerant is used as a lubricating oil.

REFERENCES:
patent: 3829260 (1974-08-01), Shimoda
patent: 5263834 (1993-11-01), Sato et al.
patent: 5672054 (1997-09-01), Cooper et al.

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