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. 29, 1986
Filed:
Oct. 11, 1984
Applicant:
Inventors:
Richard A Wilkinson, Jr, Boulder County, CO (US);
William C Hunt, Boulder County, CO (US);
Assignee:
Storage Technology Partners II, Louisville, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ; 310 42 ; 310 46 ; 310 / ; 310 89 ; 310 90 ; 360 97 ; 361212 ; 29598 ;
Abstract
A brushless direct current motor with the rotating magnet cup permanently attached to the spindle hub. After attachment, the combination spindle hub and magnet cup are affixed to the shaft and the resulting subassembly is dynamically balanced. The motor using this balanced subassembly can be assembled with no balancing required after assembly. The motor can also be disassembled for repair and reassembled without disturbing the dynamic balance. The motor includes an air seal at one end thereof and is especially useful for disk drive applications.