Two layer sintered piston ring with a rest-curve like boundary

Details Two layer sintered piston ring with a rest-curve like boundary Two layer sintered piston ring with a rest-curve like boundary

1982-02-23

1983-11-08

Padgett, Benjamin R.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428548, 75246, 419 2, 419 7, 277223, 277235R, F16J 920, B22F 702, B32B 700

Patent

active

044142846

ABSTRACT:
A piston ring produced by a powder metallurgical method has a nearly triangular zone in cross section made of a low density sintered alloy metal powder. One edge of an outer peripheral surface or bottom surface of the piston ring forms a vertex of the triangular zone. The remainder of the piston ring is composed of a high density sintered alloy metal powder. This piston ring has a high abrasion resistance at the area thereof which slides on the cylinder wall and can be produced at low cost.

REFERENCES:
patent: 2753858 (1956-07-01), Honeyman et al.
patent: 3198856 (1965-08-01), Hammond et al.
patent: 3938814 (1976-02-01), Cromwell

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