Sealing device for reciprocating member

Details Sealing device for reciprocating member Sealing device for reciprocating member

1988-09-09

1991-02-26

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

18832217, 277215, F16F 936

Patent

active

049956230

ABSTRACT:
A sealing device for use in contact with a reciprocating member such as a piston rod of an automotive shock absorber has a plurality of seal lips with tips which make resilient sliding contact with the surface of the reciprocating member. Chambers are formed between the tips of adjacent seal lips. The seal lip closest to an internal fluid to be sealed is designed to facilitate flow of the fluid into the chamber between this seal lip and the adjacent seal lip, across the region of contact between this seal lip and the reciprocating member. The design may include notches or grooves formed in the seal lip closest to the seal lip or specific design of tapered surfaces of this seal lip.

REFERENCES:
patent: 2311727 (1943-02-01), Bowers
patent: 2860615 (1957-05-01), Mayes
patent: 3144256 (1962-08-01), Wright
patent: 3214182 (1965-10-01), Herbraggen
patent: 3368650 (1968-02-01), Wasdell
patent: 3621952 (1971-11-01), Long et al.
patent: 4325558 (1982-04-01), Poggio
patent: 4695061 (1987-09-01), Meisner et al.
patent: 4723782 (1988-02-01), Muller
patent: 4865170 (1989-09-01), Ciepichal

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