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. 15, 2001
Filed:
Sep. 10, 1999
Applicant:
Inventors:
Nagatoshi Kunimori, Itami, JP;
Naohiro Nakamura, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23C 5/22 ;
U.S. Cl.
CPC ...
B23C 5/22 ;
Abstract
A ball nose end mill includes a holder body with a first half and a second half of a tip end thereof divided by a slot, a plate-shaped insert in the slot, a clamp screw with a screw shaft screwed into the second half and a screw head bearing against the first half, a tapered ring fitted around the screw shaft and seated in a tapered hole in the insert, and a spring between the screw head and the tapered ring pressing the ring against the insert. The insert is firmly pressed against the bottom of the slot, and the screw is frictionally secured.