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:
Apr. 23, 1991
Filed:
Mar. 13, 1989
Applicant:
Inventor:
Koichiro Kitamura, Toyama, JP;
Assignee:
Kitamura Machinery Co., Ltd., Toyama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
409232 ; 409234 ; 4082 / ; 279 / ;
Abstract
A machine tool has a machine tool body (3), a spindle (1) having a supporting portion (2) and being rotatably supported by the machine tool body (3), and a tool holder (5) having an inserting portion (6) attached to the supporting portion (2). A coating layer (10) made of a hard material including titanium is provided on the supporting portion (2) of the spindle (1) and/or the inserting portion (6) of the tool holder (5).