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:
Aug. 24, 1976
Filed:
May. 23, 1974
Applicant:
Inventors:
Yasuo Haneji, Yokohama, JA;
Hisao Kinjo, Yokohama, JA;
Assignee:
Victor Company of Japan, Limited, Yokohama, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G05B / ;
U.S. Cl.
CPC ...
360 78 ; 318685 ; 318696 ; 360 77 ;
Abstract
A recording and/or reproducing apparatus comprises a pulse motor for driving a head in an intermittent stepping operation across a rotating recording medium. A circuit successively passes mutually unequal currents through the stator windings of the pulse motor, thereby to drive the pulse motor responsive to the unbalanced excitation. The rotor of the pulse motor stops intermittently at positions which are offset, in the rotational direction, with respect to the stopping positions which would occur if equal excitation currents are passed through the stator windings.