(19)
(11) EP 2 840 197 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
13.01.2016 Bulletin 2016/02

(43) Date of publication:
25.02.2015 Bulletin 2015/09

(21) Application number: 13778512.7

(22) Date of filing: 16.04.2013
(51) International Patent Classification (IPC): 
E04C 5/18(2006.01)
B21H 3/04(2006.01)
F16B 7/18(2006.01)
 B21B 1/08(2006.01)
F16B 5/02(2006.01)
(86) International application number:
PCT/JP2013/061235
(87) International publication number:
WO 2013/157531 (24.10.2013 Gazette 2013/43)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 19.04.2012 JP 2012095213

(71) Applicant: Fukuda, Akira
Osaka 561-0828 (JP)

(72) Inventors:
  • WAKIYAMA, Kozo
    Ibaraki-shi Osaka 567-0048 (JP)
  • HIRAI, Keiji
    Miyako-gun Fukuoka 800-0345 (JP)
  • FUKUDA, Akira
    Toyonaka-shi Osaka 561-0828 (JP)

(74) Representative: Schön, Christoph 
Dr. Schön, Neymeyr & Partner mbB Bavariaring 26
80336 München
80336 München (DE)


(56) References cited: : 
   
       


    (54) THREADED REINFORCING BAR COUPLING FOR DEFORMED REINFORCING BAR, AND THREADED DEFORMED REINFORCING BAR


    (57) 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.