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:
Jun. 30, 2009
Filed:
Oct. 31, 2006
Applicants:
Hiroki Fujiuchi, Tochigi, JP;
Toshihiro Murakawa, Tochigi, JP;
Naoki Takahashi, Tochigi, JP;
Inventors:
Assignee:
Honda Motor Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21C 37/29 (2006.01); B21H 3/02 (2006.01); B21J 13/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A thread forming deviceis provided with a thread forming toolfor forming a thread portionat a frame, a first motorfor controlling to rotate the thread forming tool, and a second motorfor controlling to extract and retract the thread forming tool. Further, the thread forming toolis provided with a pilot hole forming portionprovided with a spiral grooveat a front end portionin a taper shape, and a thread forming portionconstituted continuously to the pilot hole forming portionand provided with a spiral groove