US PATENT SUBCLASS 285 / 258
.~.~.~.~ Expanding internal member

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

238  DF  NONMETAL TO METAL {1}
239  DF  .~ Internal member (e.g., sleeve or nipple) {2}
242  DF  .~.~ External clamp or holder {8}
256  DF  .~.~.~ Deformation {2}
258.~.~.~.~ Expanding internal member

DEFINITION

Classification: 285/258

(under subclass 256) Subject matter wherein the internal member is expanded.

SEE OR SEARCH CLASS

29, Metal Working,

523, for a method of expanding an internal tube.

72, Metal Deforming, appropriate

67+, 316+ and subclass 393, for an apparatus for expanding or flanging the end of a pipe.