Antirotation structure for combined oil ring

Details Antirotation structure for combined oil ring Antirotation structure for combined oil ring

1996-04-18

1997-07-29

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277138, 277137, 277163, F16J 906

Patent

active

056515537

ABSTRACT:
A combined oil ring comprises an oil ring and a coil expander. A curved bar passes through paired end portions of the coil expander. An antirotation member comprises a portion to be inserted into a hole and a portion to be held. Two mutually parallel surfaces of the portion to be held are held between paired end surfaces of the coil expander while the portion to be inserted into a hole is inserted into an antirotation member securing hole formed at the bottom surface of an oil ring groove of a piston. The curved bar passes through a curved bar insertion hole formed in the portion of the antirotation member to be held.

REFERENCES:
patent: 1791280 (1931-02-01), Moorhouse
patent: 3105695 (1963-10-01), Burns et al.
patent: 3108817 (1963-10-01), Huges
patent: 3955823 (1976-05-01), Willem
Japanese Industrial Standard, General Rules for Piston Rings, JIS B 8032 dated 1993.

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