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Title:
SLEEVE PIPE, AND METHOD FOR FORMING OPEN HOLE THROUGH CONCRETE STRUCTURE USING SLEEVE PIPE
Document Type and Number:
Japanese Patent JP2016113844
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sleeve pipe and an open hole formation method using the sleeve pipe, the sleeve pipe being recyclable and facilitating formation of an open hole through a beam, a wall, or a foundation of a concrete structure for installing an electric wire, a gas pipe, a water pipe and others therethrough, the sleeve pipe also preventing deflection thereof even when a wall thickness of the sleeve is reduced.SOLUTION: A sleeve pipe A for forming an open hole includes a synthetic resin second sleeve 1b, and a synthetic resin, small-diameter first sleeve 1a fitted slidably on the second sleeve 1b. The first sleeve 1a and the second sleeve 1b respectively have a slit 11 parallel to a pipe axis, formed over an entire length in a longer-side direction. A first pipe shape retaining tool 3a is fitted detachably on an inner side of the first sleeve 1a, for supporting the first sleeve 1a from inside.SELECTED DRAWING: Figure 1

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Inventors:
SAKAGUCHI NOBUHIRO
Application Number:
JP2014254836A
Publication Date:
June 23, 2016
Filing Date:
December 17, 2014
Export Citation:
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Assignee:
KYOTO SUPEESAA:KK
International Classes:
E04G15/06
Attorney, Agent or Firm:
Katsunori Sugimoto
Mitsuhiro Okada