US PATENT SUBCLASS 166 / 55.3-- .~.~ Wedge or cam actuated

US PATENT SUBCLASS 166 / 55.3
.~.~ Wedge or cam actuated

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	DF	.~ Perforating or splitting cutter {1}
55.3		.~.~ Wedge or cam actuated

DEFINITION

Classification: 166/55.3

(under subclass 55.2) Devices in which the tool is forced or guided into engagement with the wall of the well pipe by means comprising a member having an angular or curvilinear surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117.5+, for means for guiding an insertable element laterally of the well axis (e.g., whipstocks).

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

79+, for earth boring apparatus in which the tool shaft is advanced relative to a guide insertable in an inaccessible hole (e.g., well bore) to change the direction of advance.