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:
Apr. 09, 2002
Filed:
Dec. 08, 1999
Do-Young Choi, Kyonggi-do, KR;
Young-Ho Cho, Kyonggi-do, KR;
Hyeong-Seok Choi, Kyonggi-do, KR;
Chung-Hum Baik, Kyonggi-do, KR;
Jun-Young Kim, Kyonggi-do, KR;
Seung-Woo Lee, Kyonggi-do, KR;
Sung-Hee Hong, Kyonggi-do, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A head drum apparatus including a lower drum; a stationary shaft pressed and fitted into a center hole of the lower drum; an upper drum rotatably coupled to the stationary shaft via at least one bearing; a rotor magnet secured via a plate to the upper drum; a boss fixed to the top portion of the stationary shaft by a set-screw; a PCB mounted to the boss such that it is opposite to the rotor magnet, the PCB having a pulse generator (“PG”) pattern, a frequency generator (“FG”) pattern, connection patterns and jump patterns formed on one surface thereof, the PG pattern and the FG pattern being connected to the respective connection patterns via the respective jump patterns; and motor stator coils mounted to the PCB, whereby the structure of the motor becomes simpler, the number of the components and the manufacturing steps are reduced, the manufacturing efficiency is enhanced and the productivity thereof is increased.