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. 25, 1990
Filed:
Feb. 10, 1989
Applicant:
Inventor:
F Thomas Driver, Memphis, TN (US);
Assignee:
Insituform of North America, inc., Memphis, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264516 ; 138 98 ; 156287 ; 156294 ; 156 94 ; 264 36 ; 264573 ; 264269 ; 425 11 ;
Abstract
In order to line a pipeline or passageway active in conveying effluent without interrupting the flow of effluent therethrough, a first bypass conduit is passed through the section to be lined before the lining is inserted and the effluent is pumped therethrough, a second bypass conduit is passed through the lining after it has been inserted but before is has been fixed in position, the effluent is then pumped through that second conduit, the lining is fixed in position, normal effluent flow resumes, and the second conduit can be removed for future use.