专利名称：Concrete method
发明人：重本 保則，和泉 意登志，斉藤 俊夫申请号：JP特願平1-281146
申请日：19891027
公开号：JP第2705988号B2
公开日：
19980128
专利内容由知识产权出版社提供
摘要：PURPOSE:To facilitate a removal work by a method wherein after concrete is presd in a clod space in forms and a steel pipe through a feed piping, a press-in pipe, and a feed pipe, a check valve is clod, and thereafter the press-in pipe is screwed off. CONSTITUTION:A press-in pipe 7 running to a clod space 6 through a swivel joint 5 is mounted to the tip of a feed piping 4 connected to a concrete feed source, and a thread 7a joined in a screwing-in state with a tapped part 3 is formed. A ri feed pipe 9 with a door-moving type check valve 8 is welded to the tip on the clod space 6 side of an opening 2. Presd in concrete 10 is placed as it is pointed to the vertical direction of the clod space 6 in a state to forcibly open the valve 8, and upon the stop of press in, the valve 8 is clod. Through closing operation of the valve 8, leakage of the concrete 10 is prevented and the press-in pipe 7 is screwed off. This constitution facilitates removal of the pipe in a way that the press-in pipe is mounted in a scrrewing-in state.
申请人：株式会社竹中工務店
地址：大阪府大阪市中央区本町4丁目1番13号
国籍：JP
代理人：渡辺 一豊
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