Cup seal for a master brake cylinder

Details Cup seal for a master brake cylinder Cup seal for a master brake cylinder

1974-08-09

1976-03-02

Schwadron, Martin P.

Power plants

Pressure fluid source and motor

Pulsator

417511, 277212C, 92245, B60T 1126

Patent

active

039409384

ABSTRACT:
A master brake cylinder comprises a spring biased piston reciprocally mounted in a bore defined in a housing thereof. A cup seal, disposed in the bore to abut the piston, comprises a flexible annular flange portion having a plurality of circumferentially disposed grooves formed thereon to induce rotation of the cup seal upon the return stroke of the piston, subsequent to a braking operation. The cup seal is composed of a cured elastomeric material having a cup-shaped reinforcing fabric encapsulated therein.

REFERENCES:
patent: 73969 (1868-02-01), Gilberts
patent: 1372760 (1921-03-01), Loudenbeck
patent: 1767936 (1930-06-01), McElroy et al.
patent: 2211403 (1940-08-01), Boldt et al.
patent: 2349346 (1944-05-01), Goepfrich
patent: 2444569 (1948-07-01), Katcher
patent: 3181876 (1965-05-01), Felt
patent: 3800541 (1974-04-01), Sindelar et al.

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