US PATENT SUBCLASS 285 / 352
.~.~ Coacting opposed duplicates

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

335  DF  PACKED {20}
351  DF  .~ Plural seals {1}
352.~.~ Coacting opposed duplicates

DEFINITION

Classification: 285/352

(under subclass 351) Subject matter comprising duplicate gasket means between the free ends of the coupled members in coacting opposed relation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65+, for couplings comprising identical halves.

99, for fluid pressure seals of this type.

328+, for a particular interface between the coacting free ends of the coupled members.

336, for cooperating, opposed packing grooves.