Non-circular piston rings

Details Non-circular piston rings Non-circular piston rings

1988-10-26

1990-09-18

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

92177, 123193P, 277 1, F16J 900, F16J 912

Patent

active

049572121

ABSTRACT:
A piston ring whose contour deviates from the circular shape, and in particular an elliptical or oval piston ring, which, when seen in the circumferential direction, has regions that, in the installed state as well as in the operating mode, exert less radial contact pressure than the remaining surface regions in order to reduce wear of and leakage by the ring.

REFERENCES:
patent: 1406475 (1922-02-01), Morgal
patent: 4198065 (1980-04-01), Fukui
patent: 4306730 (1981-12-01), Honda et al.
Standard Handbook for Mechanical Engineers, 7th ed, edited by T. Baumeister, McGraw Hill, pp. 5-42 and 2-70.
"Reference Data for Radio Engineers", 4th ed., ITT, p. 1064.

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