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:
Oct. 03, 2000
Filed:
May. 19, 1998
Applicant:
Inventors:
Takao Kamiyama, Hiratsuka, JP;
Yasuhiro Yokoshima, Ibaraki-ken, JP;
Assignees:
Shonan Gosei-jushi Seisakusho K.K., Kanagawa-ken, JP;
Yokoshima & Company, Ibaraki-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
220484 ; 220-16 ; 2205671 ;
Abstract
A flexible manhole liner bag soaked with a curable liquid resin is inserted into a manhole; this liner bag is equipped with step connectors having female screws, which are disposed to penetrate and be supported by a fabric layer of the liner bag; the open ends of the female screws are substantially flush with the inner face of the fabric layer, and male screws are screwed into these female screws and a sealing material is applied between the internal thread of the female screws and the external thread of the male screws.