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:
Oct. 06, 1987
Filed:
Jul. 26, 1985
Applicant:
Inventor:
Kunio Suganuma, Tokyo, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360106 ; 360109 ;
Abstract
A head travelling mechanism for a floppy disk drive including a stepping motor which is provided with a pair of stator coils arranged in both end sides of its casing. These two stator coils are not only supplied exciting electric current with predetermined combined phases to drive the feeding belt but also the direction of these two stator coils is in parallel with the travelling direction of the magnetic heads, and combination of exciting phases in the stator coils enables the inclination of the motor shaft of the stepping motor to be absorbed as a sideways motion of the feeding belt so that the travelling error of the magnetic heads can be reduced to the minimum.