US PATENT SUBCLASS 166 / 55.6
.~ Cutter rotates circumferentially of pipe

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}
55.6.~ Cutter rotates circumferentially of pipe {1}
55.7  DF  .~.~> Internal {1}

DEFINITION

Classification: 166/55.6

(under subclass 55) Devices in which a cutting tool is revolved around the periphery of the well pipe and in contact therewith during the cutting operation.

SEE OR SEARCH CLASS

30, Cutlery,

94+, for cutters, not disclosed as for use in a well, in which the cutting element is rotated about the exterior of a tube.