发明名称 |
THREADED REINFORCING BAR COUPLING FOR DEFORMED REINFORCING BAR, AND THREADED DEFORMED REINFORCING BAR |
摘要 |
<p>A threaded reinforcing bar coupling for a deformed reinforcing bar according to the present invention connects a pair of reinforcing bars (1, 1), which are deformed reinforcing bars, with male threaded portions (1c) provided at end portions of the reinforcing bars and a threaded cylinder (2). In each reinforcing bar (1), by roll forming on an iron wire rod which is a raw material, a projection (1b) on an outer peripheral surface is formed and a diameter enlarged portion which is larger in diameter than another portion is formed in a portion in a longitudinal direction. An outer diameter of the diameter enlarged portion is not larger than a reinforcing bar outermost diameter (D1) including the projection (1a) of the reinforcing bar (1). The male threaded portion (1c) is formed in the diameter enlarged portion by rolling.</p> |
申请公布号 |
EP2840197(A1) |
申请公布日期 |
2015.02.25 |
申请号 |
EP20130778512 |
申请日期 |
2013.04.16 |
申请人 |
FUKUDA, AKIRA |
发明人 |
WAKIYAMA, KOZO;HIRAI, KEIJI;FUKUDA, AKIRA |
分类号 |
E04C5/18;B21B1/08;B21H3/04;F16B5/02;F16B7/18 |
主分类号 |
E04C5/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|