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:
Nov. 14, 2006

Filed:

Nov. 23, 2005
Applicants:

Toshihiko Kushida, Osaka, JP;

Yukio Torigai, Sakai, JP;

Inventors:

Toshihiko Kushida, Osaka, JP;

Yukio Torigai, Sakai, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B25B 21/00 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A controller compares a minimum value of power source voltage which decreases in association with starting current generated upon start of a motor with a threshold value in a storing unit. When the minimum value is less than the threshold value, the controller notifies of shortage of the power source terminal voltage, and stops the motor. The controller also compares a value obtained by integrating the power source voltage which decreases in association with starting current generated upon start of the motor for only predetermined time with the threshold value in the storing unit, when the integral value is less than the threshold value, notifies of shortage of the power source terminal voltage, and stops the motor.


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