US PATENT SUBCLASS 285 / 345
.~ Frictional retention upon insertion

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

335  DF  PACKED {20}
345.~ Frictional retention upon insertion {1}
346  DF  .~.~> With packing-expanding means

DEFINITION

Classification: 285/345

(under subclass 335) Subject matter in which a packing element fixed in a female member grips the male member to connect the members, as where the aperture in the packing is of smaller diameter than external diameter of the male member and the resilience of the packing holds the male after its insertion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

8, for faucet type couplings, many of which are of the slip on kind.

304, for a coupling with a friction type detent.