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. 08, 1980
Filed:
Jan. 27, 1978
Applicant:
Inventors:
David S Dunn, Windham, NH (US);
Fernando M Vasconselos, Lowell, MA (US);
Assignee:
MFE Corporation, Salem, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318138 ; 318313 ; 318254 ; 310 / ;
Abstract
A floppy disk drive system employs an inside-out DC motor whose centrally located stator is mounted directly to the chassis. The motor has a tubular rotor that encircles the stator and it is supported co-axially with the stator by the rotary disk drive spindle. A timing and commutation disk is mounted directly on the rotor and, together with speed control and commutation networks, maintains uniform motor speed.