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. 17, 1989
Filed:
Oct. 08, 1986
Applicant:
Inventors:
Saburo Kazama, Hiratsuka, JP;
Akira Tamura, Ibaraki, JP;
Assignee:
Hitachi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 64 ; 360 84 ; 360108 ; 36013024 ; 310268 ;
Abstract
A rotary head apparatus includes magnetic heads on its outer peripheral portion and rotatably supported in a hollow space defined by fixed hollow upper and lower cylindrical drums, a brushless motor stator coil attached to one or the other of the fixed drums, and a brushless motor magnet and yoke, or a first and a second magnets, arranged on the rotary head apparatus on both sides of the stator coil with a gap therebetween.