US PATENT SUBCLASS 277 / 523
.~.~.~.~.~ Disposed about external bolt or stud

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}
520  DF  .~.~.~ Particular gland feature {5}
522  DF  .~.~.~.~ Spring bias {1}
523.~.~.~.~.~ Disposed about external bolt or stud

DEFINITION

Classification: 277/523

Disposed about external bolt or stud:

(under subclass 522) Spring bias wherein the spring bias surrounds a fastener or projecting pin located outside the packing box and used to mount the gland to the packing box.