US PATENT SUBCLASS 277 / 538
.~.~.~.~.~ Distinct sheath or covering

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}
510  DF  .~.~ Contained or compressed by gland member in packing box {10}
534  DF  .~.~.~ Particular seal material or construction {4}
535  DF  .~.~.~.~ Composite {2}
538.~.~.~.~.~ Distinct sheath or covering

DEFINITION

Classification: 277/538

Distinct sheath or covering:

(under subclass 535) Composite wherein the composite includes a distinct casing or layer surrounding at least a major portion of an outer periphery of the seal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

652+, for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable having a sheath or covering.