Piston ring having a function which is for facilitating supply o

Details Piston ring having a function which is for facilitating supply o Piston ring having a function which is for facilitating supply o

1992-04-29

1992-12-08

Will, Thomas B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 79, 277202, 277201, 92158, 2988807, F16J 900

Patent

active

051691620

ABSTRACT:
For carrying out lubrication between a piston (17) and a piston ring (21) installed in an annular groove (23) of the piston, the piston ring comprises a recessed portion (15a, 15b) which is partially recessed from an upper axial end (27) of the piston ring. Lubricating oil is mixed with blow-by gas and flows into the annular groove through the recessed portion. As a result, the lubricating oil is effectively supplied to the annular groove. Therefore, the lubrication is favorably carried out between the piston ring and the piston. The piston ring may be formed from a piston ring member (10) of a ring-shaped plate which has the recessed portion on an outer peripheral surface (13) thereof.

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