US PATENT SUBCLASS 277 / 520
.~.~.~ Particular gland feature

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.~.~.~ Particular gland feature {5}
521  DF  .~.~.~.~> Segmented
522  DF  .~.~.~.~> Spring bias {1}
524  DF  .~.~.~.~> Eye or T-type bolt
525  DF  .~.~.~.~> Internally threaded
526  DF  .~.~.~.~> Externally threaded

DEFINITION

Classification: 277/520

Particular gland feature:

(under subclass 510) Seal for the gland and packing box wherein the member that substantially closes the open end of the packing box while having an opening for passage for one of the relatively movable parts has a specific characteristic.

SEE OR SEARCH CLASS

384, Bearings, for more than nominal bearing structure or detail (e.g., liner, bearing race, cage, etc.) combined with a specific seal,

150, for a plain, radial bearing where mechanical means (e.g., nut, separate resilient elements, etc.) moves the seal.