Scroll type fluid machine having a rotatable cylindrical ring on

Details Scroll type fluid machine having a rotatable cylindrical ring on Scroll type fluid machine having a rotatable cylindrical ring on

1996-01-19

1998-03-17

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418 556, 418 57, F01C 104, F01C 2102, F01C 2104

Patent

active

057279357

ABSTRACT:
A scroll type fluid machine has a swivel scroll (14) driven by a drive bush (101) engaged with a drive shaft bearing portion of the swivel scroll (14) and an eccentric drive pin (25) provided eccentrically on a drive shaft (7). Concentrated surface fatigue caused on the surface of the drive bush (101) is avoided and an elongation of the life of the drive bush (101) is attained by a rotatable cylindrical ring (102) being provided on the outer circumference of the drive bush (101).

REFERENCES:
patent: 3884599 (1975-05-01), Young et al.
patent: 4875840 (1989-10-01), Johnson et al.
patent: 4932845 (1990-06-01), Kikuchi et al.
patent: 5186616 (1993-02-01), Hirano
patent: 5366357 (1994-11-01), Fukanuma et al.
Patent Abstract of Japan, vol. 11, No. 333 (M-637), Oct. 1987 & JP-A-62 113879 (Daikin Ind. Ltd.), 25 May 1987, abstract.
Abstract of a publication entitled "Bearing" (Norimune Soda) issued 1964.

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