Venting piston ring

Details Venting piston ring Venting piston ring

1996-10-02

1997-10-14

Cummings, Scott

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277215, 91 51, 92240, F16J 912

Patent

active

056763808

ABSTRACT:
A venting piston ring is provided with ports extending partly through the ring outer surface which cooperate with the end edge of a cylinder wall to vent the cylinder volume while intermediate surface lands between ports maintain ring to cylinder contact and alignment.

REFERENCES:
patent: 1423943 (1922-07-01), Jones
patent: 2564025 (1951-08-01), Morton
patent: 2591920 (1952-04-01), Colvin
patent: 3396976 (1968-08-01), Reinhoudt et al.
patent: 3704893 (1972-12-01), Hill
patent: 4557488 (1985-12-01), Litherland
patent: 4592559 (1986-06-01), Harvey
patent: 4681326 (1987-07-01), Kubo
patent: 4736586 (1988-04-01), Kawajiri et al.
patent: 5275422 (1994-01-01), Rehfeld
patent: 5450783 (1995-09-01), Binford
patent: 5524904 (1996-06-01), Willi et al.

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