Piston of internal combustion engine

Details Piston of internal combustion engine Piston of internal combustion engine

1992-06-10

1993-09-21

Denion, Thomas E.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92222, 92224, 92126, 92178, 1231936, F16J 104

Patent

active

052459136

ABSTRACT:
A piston of an internal combustion engine, arranged to suppress engine noise and vibration while improving the frictional resistance and seizure resistance of a piston skirt. The piston skirt of the piston is formed at its outer peripheral surface with a pair of depressions. A projection having a spherical surface is formed at the bottom surface of each depression and protrudes radially and outwardly relative to the piston skirt. A heat-resistant pad is loosely fitted in each depression and has a cylindrical inner surface which is in slidable contact with the spherical surface of the projection, so that the pad makes its swinging movement in accordance with the oscillating rotational movement of the piston body around the axis of a piston pin during the reciprocating action of the piston.

REFERENCES:
patent: 3906923 (1975-09-01), Harker
patent: 4158328 (1979-06-01), Beardmore
patent: 4677900 (1987-07-01), Philby

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