Piston ring for endothermic motors having an improved flame damp

Details Piston ring for endothermic motors having an improved flame damp Piston ring for endothermic motors having an improved flame damp

1982-03-29

1985-05-14

Cohen, Irwin C.

Expansible chamber devices

Piston

With fluid passage in piston face

123193P, 277174, 277176, 277223, F02F 500, F16J 908, F16J 920

Patent

active

045164800

ABSTRACT:
The piston has at least one first piston ring groove for receiving a first compression ring and a flame damper ring groove located above said first compression ring for receiving a floating type flame damper ring. According to the invention, on the outer surface of the flame damper ring there is provided a groove adapted to receive a second compression ring having tips defining a gap, the radial thickness of the second compression ring is lower than that of said first compression ring. The second compression ring is so conformed not to close on the tips when subjected to external pressure but to act with its inner surface on the bottom of its groove.

REFERENCES:
patent: 1770034 (1930-07-01), Hardy
patent: 2291505 (1942-07-01), Phillips
patent: 2640746 (1953-06-01), Phillips et al.
patent: 3174762 (1965-03-01), Hesling et al.
patent: 3489130 (1970-01-01), Polidan et al.

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