US PATENT SUBCLASS 166 / 55.2
.~ Perforating or splitting cutter

Current as of: June, 1999
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166 /   HD   WELLS

55  DF  MEANS FOR PERFORATING, WEAKENING, BENDING OR SEPARATING PIPE AT AN UNPREPARED POINT {3}
55.2.~ Perforating or splitting cutter {1}
55.3  DF  .~.~> Wedge or cam actuated

DEFINITION

Classification: 166/55.2

(under subclass 55) Devices comprising a mechanical tool for forming an aperture or fissure in the wall of the pipe.

(1) Note. An aperture or fissure formed merely by direct application of heat or fluid pressure is not considered an aperture formed within this subclass definition.