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:
Oct. 17, 2006
Filed:
May. 26, 2005
Applicants:
Takanari Sasaya, Toyohashi, JP;
Michiru Takahashi, Niwa-gun, JP;
Inventors:
Takanari Sasaya, Toyohashi, JP;
Michiru Takahashi, Niwa-gun, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 6/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotation information detection device detects rotation information of a DC motor based on a surge component waveform superimposed on a voltage waveform between the terminals of the DC motor or a current waveform of the DC motor, a circuit is provided which supplies a current of a current value I45% during motor forward rotation or I55% during reverse motor rotation to the motor over the period from when the motor starts braking operation to when it stops.