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, 2006
Filed:
Mar. 10, 2003
Applicants:
Toshimitsu Horiuchi, Miyota-Machi, JP;
Andreas Kull, Miyota-Machi, JP;
Inventors:
Toshimitsu Horiuchi, Miyota-Machi, JP;
Andreas Kull, Miyota-Machi, JP;
Assignee:
Minebea Co., Ltd., Nagano-Ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for and a method of construction of a spindle motor having a bearing unit, a rotary shaft, a rotary hub member and an electro-magnetic motor is presented. The rotary shaft has a flange attached at a mid-section in an axial direction, between large and small diameter sections of the rotary shaft. Grooves between the bearing unit, rotary shaft and flange create radial dynamic pressure generating areas, each with as long as possible a span, and thrust dynamic pressure generating areas to both sides of the flange.