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Title:
TIMBERING DEVICE FOR REHABILITATION PIPE
Document Type and Number:
Japanese Patent JP2013256854
Kind Code:
A
Abstract:

To preassemble a timbering frame in a regularly polygonal shape on the ground, and to carry in the timbering frame through a manhole opening by folding it into a shape with a small width.

A timbering frame 2 of a timbering device 1 for supporting a back-filling material injected into a gap between an existing pipe K and a rehabilitation pipe L is formed by each rotatably coupling four mutually-adjacent unit frames 21 in positions corresponding to apexes of a regular octagon. The timbering frame is formed in a regularly octagonal shape which is rigidly connected by being subjected to inhibition of rotation of the mutually-adjacent unit frames 21, and folded into a shape with a width which enables insertion through a manhole opening by allowing rotation of the mutually-adjacent unit frames 21.


Inventors:
SENUMA HIROKI
HOSOKAWA AKIRA
NOZAKI ZENJI
Application Number:
JP2012135195A
Publication Date:
December 26, 2013
Filing Date:
June 14, 2012
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
E03F7/00; E03F3/06; F16L1/00
Domestic Patent References:
JPH10121565A1998-05-12
JPH047434A1992-01-10
JP2008045728A2008-02-28
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office



 
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