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. 14, 2016
Filed:
Jul. 05, 2011
Applicants:
Jiro Osawa, Toyokawa, JP;
Tasuku Itoh, Toyokawa, JP;
Shigetoshi Ukei, Toyokawa, JP;
Hiroshi Tomita, Toyokawa, JP;
Inventors:
Jiro Osawa, Toyokawa, JP;
Tasuku Itoh, Toyokawa, JP;
Shigetoshi Ukei, Toyokawa, JP;
Hiroshi Tomita, Toyokawa, JP;
Assignee:
OSG Corporation, Toyokawa-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23C 5/10 (2006.01);
U.S. Cl.
CPC ...
B23C 5/10 (2013.01); B23C 2210/0492 (2013.01); B23C 2210/204 (2013.01); B23C 2210/241 (2013.01); B23C 2210/282 (2013.01); B23C 2210/405 (2013.01); Y10T 407/1946 (2015.01); Y10T 407/1948 (2015.01); Y10T 407/1954 (2015.01);
Abstract
A variable lead end mill has a plurality of peripheral cutting edges with different helix angles, the variable lead end mill having a flute bottom diameter of a plurality of helix flutes making up rake faces of the plurality of the peripheral cutting edges, the flute bottom diameter increasing in an axial direction from a tool tip toward a shank.