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. 11, 1990
Filed:
Jun. 19, 1989
Akio Morinaga, Fujisawa, JP;
Masakatsu Hyodo, Takatsuki, JP;
Tomiyo Nishimoto, Mishima, JP;
Hiroyuki Sakuragi, Kobe, JP;
Shinji Onishi, Takarazuka, JP;
Tokyo Gas Kabushiki Kaisha, Tokyo, JP;
Ashimori Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A method for lining pipe lines for transporting city water, city gas, petroleum and other various kinds of fluids. In a method used as a conventional art, i.e. a method for lining pipe lines which comprises pushing forward a flexible tubular lining material (2) provided on the inner surface thereof with a binder to allow a turning portion (4) of the lining material (2) to advance within a pipe line (1) while turning the lining material (2) inside out under fluid pressure thereby bonding the evaginated lining material onto the inner surface of the pipe line (1), the present invention is characterized in that a portion of the pipe line in the forwardly moving direction of the turning portion (4) is fully filled with water (7) and that a binder of the reaction-curing type, capable of reacting with water to initiate curing, is used as the binder, whereby the binder on the inner surface of the lining material is brought into contact with the water and cured at the turning portion (4) to bond the outer surface of the evaginated lining material onto which the binder has been applied to the inner surface of the pipe line (1).