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:
Jul. 20, 1999
Filed:
Dec. 17, 1997
Sung Cheon Jung, Seoul, KR;
Jin Ki Min, Kyunggi-do, KR;
Samsung Electro Mechanics Co., Ltd., Suwon, KR;
Abstract
A brushless DC motor for a disc drive having a base and a coil-wound stator secured to an upper portion of the base. One or more first stoppers are secured to the stator and a shaft is rotatably secured in a bearing forcibly inserted in a bore in the upper portion of the base. A hub of a rotor is secured to the shaft and a cylindrical wall extends downwardly at the rim of the hub and carries a magnet facing the stator with an air gap therebetween. A second stopper is secured to the rotor, to face the first stopper to retain the rotor in the axial direction. The second stopper has a flange over which the first stopper is placed with slight clearance. An elastomer rests on the first stopper and carries guides which extend in slots in the rotor to engage and center a hole in a disc.