Seal with electrical conductor wear indicator

Details Seal with electrical conductor wear indicator Seal with electrical conductor wear indicator

1996-07-25

1998-07-28

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

277919, 116208, F16J 1516

Patent

active

057853231

ABSTRACT:
A seal for preventing leakage of fluid from between a first member and a second member, the second member is capable of moving toward and away from the first member, the seal is adapted for engaged contact with the first member and the second member so as to prevent leakage of fluid between the first member and the seal and between the second member and the seal, the seal being softer than the second member such that friction between the seal and the second member wears the seal faster than the second member, the seal being adapted to retain a tight seal against the second member as long as the seal has not worn beyond a specified depth; and a conductor for placement about the second member, the conductor being attached to the seal at the specified depth so as to contact the second member when the seal has worn to the specified depth, such that the existence of electrical continuity between the conductor and the second member indicates that the seal requires replacement, the conductor is positionally associated to the seal such that wear of the seal corresponds with movement of the conductor toward the second member; and the electrical continuity indicates whether the seal requires replacement.

REFERENCES:
patent: 4184145 (1980-01-01), Fima
patent: 4832160 (1989-05-01), Fargier et al.
patent: 4833440 (1989-05-01), Wojtanek
patent: 4936197 (1990-06-01), Brent
patent: 5111178 (1992-05-01), Bosze
patent: 5540448 (1996-07-01), Heinzen

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