ApplicationNo. 167772 filed on 12/15/1993
US Classes:137/318, With aperture forming means137/240, With separate material addition138/94, Laterally insertable138/97REPAIRING
ExaminersPrimary: Walton, George L.
Attorney, Agent or Firm
International ClassesF16K 043/00
AbstractA hot tap apparatus for insertion of a controllable device into an in-service pipeline comprising a housing adapted to be sealably secured to a pipe and enclose a portion of the pipe. The housing forms a chamber which is partitioned into an insertion chamber and a discharge chamber, the insertion chamber being disposed adjacent to an insertion end of the housing and the discharge chamber being disposed adjacent the discharge end of said housing. The insertion end of the housing is sealable. The apparatus further comprises a cutting apparatus for cutting an opening in the pipe sized to receive the controllable device disposed in the housing.