Piston and piston ring construction

Details Piston and piston ring construction Piston and piston ring construction

1987-04-07

1989-11-28

Shoap, Allan N.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

92208, 277136, 277137, 277181, F16J 920, F16J 924, F02F 500

Patent

active

048830291

ABSTRACT:
A piston assembly comprising a piston reciprocally movable along an axis and including a generally cylindrical outer surface having therein a circumferentially extending groove partially defined by a surface having therein a recess, and a piston ring located in the groove and including a lower surface extending generally perpendicularly to the axis, a first arcuate segment having an upper surface inclined radially inwardly and downwardly and having a maximum thickness and a radially inwardly decreasing thickness, and a second arcuate segment extending into the recess and having a substantially constant thickness across the radial extent thereof, the constant thickness being substantially equal to the maximum thickness.

REFERENCES:
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patent: 2248779 (1941-07-01), Phillips
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patent: 3391942 (1968-07-01), Riley
patent: 3554564 (1971-01-01), Lassanske
patent: 4111438 (1978-09-01), Longfoot
patent: 4212473 (1980-07-01), Arai
patent: 4367702 (1983-01-01), Lassanske
patent: 4522415 (1985-06-01), Dworak et al.
patent: 4572520 (1986-02-01), Shinada

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