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:
Jan. 13, 2009
Filed:
Dec. 18, 2006
Yeon-ho Son, Suwon-si, KR;
Yeon-Ho Son, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, KR;
Abstract
Disclosed is an apparatus, controlling the number of rotations per minute of a brushless DC motor, the apparatus comprising: a brushless DC motor that rotates at a constant speed when a rotation current is applied, and stops rotating when a stop current is applied; a pulse applying unit that outputs input pulses according to a pulse apply frequency, which is predetermined or inputted by a user; a rotation detecting unit that detects the number of rotation pulses, and outputs a predetermined output signal per rotation of the brushless DC motor; and a current controlling unit that applies the rotation current to the brushless DC motor in correspondence with the input pulse, and the stop current to the brushless DC motor in correspondence with the output signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile