US2018313085A1PendingUtilityA1

Reinforcement steel

Assignee: ONO KOGYOSYO CO LTDPriority: Apr 26, 2017Filed: Jan 26, 2018Published: Nov 1, 2018
Est. expiryApr 26, 2037(~10.7 yrs left)· nominal 20-yr term from priority
E01D 19/125E04C 5/06E01D 2101/268E04C 5/166E04C 5/03
42
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Claims

Abstract

A reinforcement steel bar includes a shaft part and a head part formed by forging an end portion of the shaft part. The head part is provided with a projection projecting from the shaft part in a radial direction of the shaft part, and a flat surface extending parallel to an axial direction of the shaft part. A distance from a shaft center of the shaft part to the flat surface is in a range from 100% to 115% of a maximum radius of the shaft part.

Claims

exact text as granted — not AI-modified
1 . Reinforcement steel comprising:
 a shaft part; and   a forged head part provided at an end portion of the shaft part, wherein   the head part is provided with
 a projection projecting from the shaft part in a radial direction of the shaft part, and 
 a flat surface extending parallel to an axial direction of the shaft part, and 
   a distance from a shaft center of the shaft part to the flat surface is in a range from 100% to 115% of a maximum radius of the shaft part,
 wherein a rib is formed on an outer peripheral surface of the shaft part. 
   
     
     
         2 . (canceled) 
     
     
         3 . The reinforcement steel according to  claim 1 , wherein the head part is provided with a recess formed along a corner portion between the projection and an outer peripheral surface of the shaft part. 
     
     
         4 . (canceled)

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