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:
Apr. 25, 1995
Filed:
Jul. 06, 1993
Applicant:
Inventor:
Eric Wood, Castletown, GB;
Assignee:
Insituform (Netherlands) B.V., Rotterdam, NL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
156287 ; 138 97 ; 156294 ; 264269 ; 264573 ; 427236 ; 427238 ;
Abstract
An underground pipeline or passageway is lined by having a plastics film pre-liner tube applied thereto by inflation, and the tube whilst inflated has an applicator pulled therethrough from which a fluent curable or hardenable composition issues and is applied directly to the inside of the inflated tube to form a layer which cures or hardens to form a lining. Preferably a second tube is applied to the inside of the composition layer to hold it in position whilst it cures or hardens.