The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 1997
Filed:
Dec. 15, 1993
William F Rush, Jr, Tinley Park, IL (US);
Bruce K Campbell, Chicago, IL (US);
Kenneth C Hardy, Chicago, IL (US);
Lynn A Sweetwood, Round Lake Beach, IL (US);
Institute of Gas Technology, Des Plaines, IL (US);
Abstract
A 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.