US PATENT SUBCLASS 285 / 336
.~ With cooperating opposed packing grooves

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

335  DF  PACKED {20}
336.~ With cooperating opposed packing grooves

DEFINITION

Classification: 285/336

(under subclass 335) Subject matter wherein each of the adjacent faces of the members to be joined is provided with an annular, equi-radial groove for the mutual reception of a packing element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

349+, for a supplemental packing socket in a socket joint.