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:
Oct. 26, 1982
Filed:
Apr. 28, 1981
Applicant:
Inventor:
William B Smith, Berea, OH (US);
Assignee:
The Pipe Line Development Company, Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16L / ; F16L / ;
U.S. Cl.
CPC ...
137318 ; 138 94 ; 138 97 ; 166 55 ;
Abstract
Apparatus adapted to be retrofitted on an existing live pipeline to plug off and isolate a section of the pipe while maintaining flow through an associated bypass circuit. The disclosed apparatus includes a housing to be secured around the pipe and elements operable in the housing to cut into the pipe and establish a closed flow path between one section of the pipe and the exterior of the housing while isolating such flow from a work chamber within the housing and remaining sections of the pipe.