Piston scraper ring

Details Piston scraper ring Piston scraper ring

1987-01-30

1988-05-03

Watkins, Donald

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

92158, 92212, 92240, 92246, 277148, 277139, F16J 912, F16J 900, F16J 920

Patent

active

047415436

ABSTRACT:
A cylinder and piston assembly with an oil scraper ring having a radially washer seated in a radial piston groove, and a scraping skirt having a radially resilient truncated portion with the base edge engaging the cylinder wall in a scraping line located in or substantially close to the median plane of the washer so as to avoid bending moments on the washer tending to interfere with its free radial movement in the piston groove as required to maintain uniform scraping contact with the cylinder wall.

REFERENCES:
patent: 2663602 (1953-12-01), Olsen
patent: 4212472 (1980-07-01), Mizuno et al.
patent: 4516481 (1985-05-01), Geffroy et al.
patent: 4629200 (1986-12-01), Ruddy
patent: 4669369 (1987-06-01), Holt et al.

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