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:
Jul. 30, 1991
Filed:
Aug. 13, 1990
Applicant:
Inventors:
Assignees:
Toa Grout Kogyo Kabushiki Kaishi, Tokyo, JP;
Kabushiki Kaisha Iseki, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
405154 ; 138 97 ; 405150 ;
Abstract
A liner for pipeline repair is provided that includes an elastically deformable sleeve having impermeability, a base having a sheet-like base portion disposed inside the sleeve, wound into a cylindrical form, and expandable radially and fixing means disposed in the base for maintaining the base portion in a subtantially cylindrical form when the base portion is expanded radially within the sleeve. The liner is used for preventing the outflow of water from a pipeline such as a sewer pipe and/or the inflow of water into the pipeline.