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. 26, 2000
Filed:
Jan. 28, 1999
Takao Kamiyama, Kanagawa-ken, JP;
Yasuhiro Yokoshima, Ibaraki-ken, JP;
Shigeru Endoh, Ibaraki-ken, JP;
Hiroyuki Aoki, Saitama-ken, JP;
Shonan Gosei-Jushi Seisakusho K.K., Hiratsuka, JP;
Yokoshima & Company, Ibaraki-ken, JP;
GET Inc., Tsukuba, JP;
OAR Company, Tokorozawa, JP;
Abstract
A branch pipe lining bag wherein an annular protective member is previously fixed on a flange which is provided adjoined to an open end of a tubular bag. This tubular bag is soaked with a hardenable liquid resin and adapted to be everted under fluid pressure into a branch pipe. The protective member can be attached on the marginal periphery of the branch pipe opening to the main pipe simultaneously at the end of the branch pipe lining, irrespective of the inner diameter of the main pipe. Also, a pipe lining method wherein the annular protective member fixed on the flange is prepared previously and then the flange is connected to the part of the main pipe where the branch pipe opens. The main pipe lining bag can be bored without any damage irrespective of both the main pipe diameter and the branch pipe diameter or any connecting situations.