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:
Nov. 20, 2007
Filed:
Nov. 29, 2006
Applicant:
Shin Sumimoto, Hyogo, JP;
Inventor:
Shin Sumimoto, Hyogo, JP;
Assignee:
Hiroaki, Kanai, Ashiya-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21F 37/00 (2006.01); F16L 21/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are metallic wire with high surface quality and low-cost suitable for use as material for grip rings and a producing method and apparatus thereof. Metallic wiredeformed in a coil shape is passed through a shape correction unitso as to straighten it. Furthermore, while upper and lower pressing rollersprevent the metallic wirefrom warping upwardly and downwardly, wedge-shaped grooves are continuously formed on the metallic wireby means of a first cutting rollerand a second cutting roller