Sealing cup

Details Sealing cup Sealing cup

1978-07-14

1980-02-19

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277124, F16J 1532

Patent

active

041891600

ABSTRACT:
A sealing cup to be used for a hydraulic piston-cylinder device the cup having an outer lip with a leading edge adapted to slide along a wall when fitted in the device. The angle .alpha. of the leading edge with respect to the cylinder axis is made smaller than the angle of a portion other than the leading edge with respect thereto, and is made as 1.degree..ltoreq..alpha..ltoreq.15.degree. in the free condition of the cup. When the sealing cup is installed to be slid in the cylinder, a wedge-shaped clearance is formed between the leading edge and the cylinder wall due to provision of the angle .alpha., thereby admitting the fluid therein to decrease the slide resistance of the sealing cup.

REFERENCES:
patent: 2664952 (1954-01-01), Losey
patent: 2686402 (1954-08-01), Samuel
patent: 2720924 (1955-10-01), Brown
patent: 2815995 (1957-12-01), Young
patent: 2867457 (1959-01-01), Riesing et al.
patent: 2884291 (1959-04-01), Whitten
patent: 3527507 (1970-09-01), Clark et al.
patent: 3653670 (1972-04-01), Sifri et al.

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