Piston ring assembly

Details Piston ring assembly Piston ring assembly

1995-06-01

1998-08-18

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277138, 277139, 277140, 277141, 277142, F16J 906

Patent

active

057949417

ABSTRACT:
An improved piston ring assembly comprises a double-offset expander spring and a piston ring. The expander spring has a first wave portion that is continuously engaged in an annular groove of a piston body, the wave portion having an axial extent that is nearly identical to that of the groove. The spring also has a second wave portion with an axial extent less than that of the first wave portion. The second wave portion is adapted to engage a mating slot of the piston ring. The expander spring, rather than the piston ring, is primarily relied upon to engage the groove of the piston body to eliminate assembly slippage and provide axial centering. Thus, the radial thickness of the piston ring may be greatly reduced to improve conformability and reduce oil consumption.

REFERENCES:
patent: 2293450 (1942-08-01), Wilkening
patent: 2904377 (1959-09-01), Endres et al.
patent: 2967746 (1961-01-01), Braendel
patent: 3281156 (1966-10-01), Mayhew et al.
patent: 3326561 (1967-06-01), Braendel
patent: 3370858 (1968-02-01), Braendel
patent: 3814444 (1974-06-01), Johnson et al.
patent: 4145060 (1979-03-01), Stecher et al.
patent: 4161321 (1979-07-01), Hendrixon et al.
patent: 4210338 (1980-07-01), Collings, Jr.
patent: 4214762 (1980-07-01), McCormick et al.
patent: 4473232 (1984-09-01), Umeha et al.
patent: 4497497 (1985-02-01), Berti et al.
patent: 4522412 (1985-06-01), Kubo
patent: 4585237 (1986-04-01), Koop
patent: 4796898 (1989-01-01), Brauers et al.
patent: 5129661 (1992-07-01), Ono et al.
patent: 5238255 (1993-08-01), Sytsma
patent: 5241748 (1993-09-01), Ishida
patent: 5295696 (1994-03-01), Harayama et al.
patent: 5304262 (1994-04-01), Karaoke et al.

Affiliated with

Also associated with

Rating

Piston ring assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piston ring assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston ring assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1108560