US PATENT SUBCLASS 285 / 346
.~.~ With packing-expanding means

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

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

DEFINITION

Classification: 285/346

(under subclass 345) Subject matter including means for compressing the packing and further reducing the aperture diameter to better grip the male.

SEE OR SEARCH THIS CLASS, SUBCLASS:

338, for a coupling with a spigot carried, radially expansible packing. See the Search Notes thereunder.