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. 22, 1999
Filed:
Apr. 20, 1998
Applicant:
Inventors:
Kenneth G DeRoche, Greensburg, PA (US);
Mark A Francis, Solon, OH (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23C / ;
U.S. Cl.
CPC ...
407 42 ; 407 54 ; 407 59 ; 407 63 ;
Abstract
A multiple fluted helical end mill with at least two flutes. Each flute includes a plurality of inserts secured therein. The inserts are all identical. The inserts in different flutes being secured therein at different rake angles. The different rake angles resulting in different effective axial lengths of the inserts. This different effective length of inserts in adjacent flutes results in all effective cutting and it is particularly beneficial where the inserts in a given flute do not have overlapping cutting edges.