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:
Nov. 25, 2003
Filed:
May. 19, 2000
Applicant:
Inventors:
Assignee:
Yukiwa Seiko Kabushiki Kaisha, Ojiya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 7/00 ; B23B 9/00 ;
U.S. Cl.
CPC ...
B23B 7/00 ; B23B 9/00 ;
Abstract
An NC machine tool includes an NC circular table and an NC circular table apparatus which dispense with the original restoration or calibration operation in an absolute type encoder using a backup battery. The NC circular table has an NC controller for performing a positional detection by an absolute type encoder and a backup battery for the encoder is provided in the NC circular table body.