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:
May. 29, 2012
Filed:
Feb. 14, 2008
Makoto Matsunaga, Tokyo, JP;
Munehiro Nakamura, Tokyo, JP;
Shoichi Takahashi, Tokyo, JP;
Union Tool Co., Tokyo, JP;
Abstract
There is provided an exceptionally practical rotary cutting tool allowing the life of the tool to be prolonged. The rotary cutting tool has a plurality of helically shaped swarf discharge flutes () formed on a periphery of a tool body () from a leading end towards a trailing end, and a peripheral blade () formed on an intersecting ridgeline of a rake surface () of the swarf discharge flutes () and the peripheral surface of the tool body (). A back taper part (B), on which an outside diameter (D) of the peripheral blade () and an inside diameter (D) of the tool body () gradually decrease from the leading end of the tool towards the trailing end, is provided to the leading end of the tool body ().