Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-10-13
1994-02-22
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277165, 277206R, 277228, F16J 1532
Patent
active
052880869
ABSTRACT:
A composite rod wiper for an end cap of a hydraulic cylinder is disclosed for wiping the cylindrical exterior surface of an extensible and retractable rod extending through the end cap. The rod wiper includes a wiper ring of a first, hard and wear resistant elastomeric material. The wiper ring has a generally Vee shaped cross-sectional configuration having a radially inner acute wiper lip, an outer leg and an inner leg, each leg extending radially and axially inwardly in a diverging relation from each other from the wiper lip, and a cavity disposed intermediate the inner and outer legs. An energizer ring of a second, softer and more resilient elastomeric material is disposed in the cavity of the wiper ring. The composite rod wiper 10 provides wiper that has a long wear life, while at the same time maintaining the wiper lip in continuous wiping contact with the rod surface at a sufficient radial force level to ensure proper cleaning action throughout its useful life and during all temperature extremes.
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patent: 4618153 (1986-10-01), Nilsson
Caterpillar Inc.
Cuchlinski Jr. William A.
De Pumpo Daniel G.
Pence O. Gordon
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