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:
Dec. 01, 1992
Filed:
Nov. 29, 1991
Applicant:
Inventor:
Brian E McGuire, Lancs, GB;
Assignee:
British Gas plc, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
29234 ; 29235 ; 29819 ;
Abstract
An apparatus for lining installed pipework which includes a swaging die which is attached directly or indirectly to the pipe to be lined, pulling structure attached to the leading end of the liner pipe and threaded through the pipework to reduce the external diameter of the liner pipe by up to 15%, pushing structure located between the die and the pipework, and heating and cooling apparatus for the liner pipe.