Piston assembly and method of manufacture

Details Piston assembly and method of manufacture Piston assembly and method of manufacture

2006-03-28

2006-03-28

Pickard, Alison K. (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

C277S453000

Reexamination Certificate

active

07017914

ABSTRACT:
A piston assembly having a piston and a piston ring. The ring mates to the piston in a groove on the outer surface of the piston. The ring includes two side walls that connect between inner and outer peripheral walls. The side walls converge outwardly at different angles from the inner peripheral wall to the outer peripheral wall. The angles are different to produce a twist feature of the ring within the piston groove to generate a better seal by the ring. The groove of the piston is generally tapered and has top and bottom walls converging at angles approximately equal to the angles of the side walls of the ring. A method of manufacturing the piston assembly includes forming first and second side walls having first and second angles by outwardly converging from the inner peripheral wall to the outer peripheral wall.

REFERENCES:
patent: 1381993 (1921-06-01), Hill et al.
patent: 3104594 (1963-09-01), Reiners
patent: 3831952 (1974-08-01), Geffroy
patent: 3895815 (1975-07-01), Panigati
patent: 3926166 (1975-12-01), Packard
patent: 4123072 (1978-10-01), Sharpe
patent: 4299401 (1981-11-01), McCormick
patent: 4681326 (1987-07-01), Kubo
patent: 4815429 (1989-03-01), Thornton
patent: 6131503 (2000-10-01), Takashima
patent: 4117212 (1992-12-01), None
patent: 3-223568 (1991-10-01), None
patent: 2001-182831 (2001-07-01), None
Patent Abstracts of Japan (Publication No. 03223568) (1 page).
Patent Abstracts of Japan (Publication No. 2001182831) (1 page).
International Search Report (2 pages).

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