Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1989-05-26
1990-03-20
Shoap, Allan N.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
92102, 92249, 277173, 277207A, 285345, 285910, F16J 920, F16J 928, F16J 1502, F16L 2102
Patent
active
049095200
ABSTRACT:
A shaft or piston seal for preventing unidirection fluid flow between two concentric mating members has an annular body in the form of a ring-like member with a polygonal profile in right cross section having innermost and outermost radial portions. One of the innermost and outermost radial portions at one end of the body defines a hinge surface and the other of the innermost and outermost radial portions at a medial section of said body defines a sealing surface. The other end of said body defines a non-contact stabilizing section. The sealing surface is in the form of a sealing band which contacts one of the mating members, the hinge surface seated in the other mating member. The non-contact stabilizing member flexes and provides a counterforce for urging the sealing band against the one mating member.
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