US PATENT SUBCLASS 277 / 556
.~.~.~.~ Material other than metal

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

345  DF  SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
500  DF  .~ Circumferential contact seal for other than piston {13}
549  DF  .~.~ Peripheral radially sealing flexible projection (e.g., lip seal, etc.) {12}
553  DF  .~.~.~ Bias feature other than nominal garter spring {5}
556.~.~.~.~ Material other than metal

DEFINITION

Classification: 277/556

Material other than metal:

(under subclass 553) Bias for the flexible projection consisting of a substance other than metal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

468, for a particular piston ring expander separate from a piston ring and other than metal.