High-friction fluid seal and shock absorber

Details High-friction fluid seal and shock absorber High-friction fluid seal and shock absorber

2008-11-09

2010-11-23

Schwartz, Christopher P (Department: 3657)

Brakes

Internal-resistance motion retarder

Including seal or guide

C277S549000, C277S560000

Reexamination Certificate

active

07837017

ABSTRACT:
A high-friction fluid seal used for high-friction sealing, comprising a fluid seal lip provided on the working fluid filling side to intercept a working fluid; and a dust lip provided on the working fluid non-filling side (the outer side) of the fluid seal lip to intercept dust coming from the outside, wherein the thickness of a working fluid film formed on the extension stroke by the dust lip is smaller than the thickness of a working fluid film formed on the extension stroke by the fluid seal lip.

REFERENCES:
patent: 4560177 (1985-12-01), Riley, Jr.
patent: 5649709 (1997-07-01), Munekata et al.
patent: 5664651 (1997-09-01), Miura et al.
patent: 2002/0079650 (2002-06-01), Hosoda
patent: 2002/0092722 (2002-07-01), Hosoda et al.
patent: 2007/0007731 (2007-01-01), Zahn

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