The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2017
Filed:
Feb. 25, 2015
Cent & Cent Gmbh & CO KG, Erbach, DE;
Karl-Hermann Stahl, Voehringen, DE;
CENT & CENT GMBH & CO. KG, , DE;
Abstract
A method of making steel fibers, preferably for use as a concrete additive, and for the supply thereof in making steel fiber concrete, characterized in that to form the steel fibers () first a sheet-metal strip () is notched either on one face or both faces so as to form steel-fiber wires () that are initially connected together by webs (), and that further, for subsequently converting the webs () into thin easily mutually separable separation webs forming separation surfaces that are fracture-rough and low in burring upon separation, the steel-fiber strip is subjected to a flexing process in which each web () is subjected to multiple bending deformations about its longitudinal axis in such a way that incipient cracks are produced at the webs () due to fatigue fracture and thus the separation webs are produced.