Piston rings particularly suited for use with ceramic matrix com

Details Piston rings particularly suited for use with ceramic matrix com Piston rings particularly suited for use with ceramic matrix com

1997-03-19

1998-08-18

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

277442, 921701, F16J 928

Patent

active

057949433

ABSTRACT:
A piston ring for use with ceramic matrix composite engine cylinders. In one embodiment, an extra-hard material is used for a conventional ring design. In another embodiment, a hardened edge employing Tungsten Carbide Cobalt is employed. The same edge treatment can also be employed for other seals such as that of a rotary engine.

REFERENCES:
patent: 3814447 (1974-06-01), Prasse et al.
patent: 5063881 (1991-11-01), Kawamura
patent: 5154433 (1992-10-01), Naruse

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