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.

Date of Patent:
Apr. 16, 2013

Filed:

Sep. 15, 2006
Applicants:

Ichiro Kitaura, Itami, JP;

Yoshihiro Machida, Itami, JP;

Inventors:

Ichiro Kitaura, Itami, JP;

Yoshihiro Machida, Itami, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23C 5/26 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tool unclamping device is a device capable of unclamping a tool clamped to a spindle of a machine tool, and comprises a casing, an output shaft set on this casing and capable of outputting power necessary for unclamping the tool, a motor serving as a power source capable of supplying power for driving the output shaft, a power transmission mechanism transmitting the power from the motor to the output shaft and a gas cylinder serving as an auxiliary power source capable of supplying auxiliary power to this power transmission mechanism.


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