Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-06-30
1996-11-19
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277205, 188 724, 188370, F16J 1532
Patent
active
055754848
ABSTRACT:
An improved fluid pressure activated piston return spring seal element is installed in a piston housing annular groove having first and second radial side walls, an axial base wall, and a mouth. The element is annular, formed of an elastomeric material, and has an axis, first and second radial faces, and an axial face. The first radial face faces toward the first side wall, defines an inwardly extending crotch region, and includes a base wall pressure sealing lip. The axial face faces toward and protrudes through the groove mouth and includes a piston pressure sealing lip and first and second angled surfaces. The element has a body portion, a first branch extending axially from the body portion toward the first radial face and having the piston pressure sealing lip, a second branch extending axially from the body portion toward the first radial face and having the base wall pressure sealing lip, and a third branch extending radially from the first branch end toward the second branch end and defining a portion of the first radial face. The body portion and the first, second, and third branches define the crotch region.
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Cummings Scott
Greene Tweed of Delaware, Inc.
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