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. 29, 2000
Filed:
Nov. 10, 1998
Sang Cheol Lee, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A brushless DC motor has a stator and a rotor. The stator has a stator core and excitation coils wound around the stator core. The rotor has a rotor core disposed at the inner space of the stator, and many permanent magnets inserted into the rotor core. The permanent magnets are symmetrically tilted with respect to a radial direction of the rotor core. The rotor core is formed with slots for cutting off a magnetic field between the permanent magnets adjacent to each other. The slots are parallel with an axis of the rotor core. The slots are formed between ends of the permanent magnets adjacent to each other at an outer part of the rotor core. The vortex of magnetic flux between the permanent magnets is prevented by the slots.