Title:
SLEEVE TUBE
Document Type and Number:
Japanese Patent JP2018188891
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sleeve tube which can smoothly respond to the length adjustment at the site without using a long cutting tool and can very easily remove the work from a through hole.SOLUTION: The sleeve tube body 10 is formed by alternately disposing two types of first and second resin materials 11 and 12 having different elasticities in the circumferential direction. The first and second resin materials 11 and 12 are extruded from polyvinyl chloride of the same material as a raw material and the hard first resin material 11 having low elasticity among them is made thick so that elastic deformation is suppressed against external pressure acting on the sleeve tube body 10 when placing and molding a concrete structure. On the other hand, the remaining second soft resin material 12 having a high elasticity is made thin so that each of the first resin material 11 is connected without maintaining an annular shape of the sleeve tube body 10 in a state where each of them is freely elastically deformed. A spiral core member 13 that contacts the sleeve tube body 10 is inserted into the sleeve tube body 10 so as to maintain the annular shape with respect to an external pressure.SELECTED DRAWING: Figure 6
Inventors:
SAKAGUCHI NOBUHIRO
Application Number:
JP2017092983A
Publication Date:
November 29, 2018
Filing Date:
May 09, 2017
Export Citation:
Assignee:
KYOTO SUPEESAA KK
International Classes:
E04G15/06
Attorney, Agent or Firm:
Katsunori Sugimoto
Mitsuhiro Okada
Mitsuhiro Okada