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:
Feb. 10, 2004
Filed:
Dec. 15, 1999
Applicant:
Inventors:
Katsuhiro Hashimoto, Hiratsuka, JP;
Masato Hiramatsu, Isehara, JP;
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/104 ; G11B 2/118 ; G11B 5/52 ;
U.S. Cl.
CPC ...
G11B 2/104 ; G11B 2/118 ; G11B 5/52 ;
Abstract
A rotation balance control mechanism controlling a rotation balance of a rotary head drum apparatus comprising a fixed drum and a rotary drum and a drum motor unit urging the rotary drum, the rotation balance control mechanism comprising a rotor plate mounted on a shaft mount of the drum motor, the rotor plate capable of mounting a balance weight for controlling the rotation balance of the rotary head drum apparatus.