Title:
RECYCLABLE VOID PIPE
Document Type and Number:
Japanese Patent JP2001173228
Kind Code:
A
Abstract:
To provide a recyclable void pipe such as a city-water piping space forming pipe (void pipe) in a concrete building.
The recyclable void pipe comprises a metal plate rolled into a truncated cone cylinder and rotationally attached at one upper potion, where both ends are overlapped, and tongue members with mounting holes arranged at equal spaces at both upper and lower ends of the cylinder.
Inventors:
NOGAMI YASUNOBU
Application Number:
JP37668999A
Publication Date:
June 26, 2001
Filing Date:
December 17, 1999
Export Citation:
Assignee:
NOGAMI YASUNOBU
International Classes:
E04G15/06; (IPC1-7): E04G15/06