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:
Sep. 03, 1991
Filed:
Aug. 21, 1989
Applicant:
Inventors:
F Thomas Driver, Memphis, TN (US);
Jeff P Wells, Memphis, TN (US);
Assignee:
Insituform Licensees B.V., , NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ; B29C / ;
U.S. Cl.
CPC ...
138 98 ; 29234 ; 294264 ; 156 94 ; 156294 ; 264 36 ; 264269 ; 405150 ; 425460 ; 425D / ;
Abstract
To facilitate the repair of short sections of pipe by providing a lining in situ, a repair carrier containing the repair lining is moved into position adjacent the pipe length to be lined, the lining is forced out of the carrier into position in the pipe where it is fixed in position and the carrier is then removed from the pipe leaving the lining in place. A flexible tube forming a part of the carrier is used to initially position the lining in the carrier and then to force the lining out from the carrier and urge it against the interior of the pipe, preferably by eversion.