Loading patent…
AssigneesShonan Gosei-Jushi Seisakusho K.K., Yokoshima & Company, Get Inc., OAR Company
InventorsTakao Kamiyama, Yasuhiro Yokoshima, Shigeru Endoh, Hiroyuki Aoki
Estimating the term…
A pipe lining method provides for precise cutting of a main pipe liner bag along a branch pipe opening using a cutter while preventing the inner wall of a branch pipe and the cutter from damages. After a cutting protection member is attached along the periphery of a branch pipe opening of a main pipe, the main pipe is lined using a main pipe liner bag. Then, a cutter of a cutting robot introduced into the main pipe is driven to cut away a portion of the main pipe liner bag covering a branch pipe opening. Since the cutting protection member functions as a guide for the cutter when cutting the portion of the main pipe liner bag covering the branch pipe opening as well as functions as a protection member for protecting the inner wall of the branch pipe, thereby making it possible to precisely cut the main pipe liner bag along the branch pipe opening using the cutter and to prevent the inner wall of the branch pipe and the cutter from damages.
A pipe lining method for a main pipe having a branch pipe extending from said main pipe, said branch pipe being not lined, said method comprising the steps of:
A pipe line comprising a main pipe, at least one branch pipe extending from said main pipe, a protection member attached along a periphery of an opening of said branch pipe toward said main pipe, said protection member including a flange portion contacting to said main pipe, both of said main pipe and said flange portion of the protection member being lined with a main pipe liner bag, and said main pipe liner bag being partially removed at said opening of the branch pipe.
Dependencies are inferred from the claim text.