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:
Feb. 14, 2012
Filed:
Mar. 31, 2009
Tae-kyung Kang, Seoul, KR;
Man-ho Byean, Suwon, KR;
Ju-hyun Baek, Seoul, KR;
Woongjin Coway Co., Ltd., Gongjoo, KR;
Abstract
An apparatus for controlling a rotational movement of an opening and closing unit by using a counter electromotive force of a motor includes: a motor driving unit that drives an electric damper by driving a motor to operate the opening and closing unit; a position detecting unit that detects the position of the opening and closing unit operated by the motor driving unit; a power intercepting unit that receives a signal of detecting the position of the opening and closing unit from the position detecting unit, and cuts off power if it determines that the opening and closing unit is at a pre-set position based on the received position detect signal; and a counter electromotive force generating unit that generates a counter electromotive force of the motor when the power intercepting unit cuts off power.