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:
Jan. 19, 1999
Filed:
Feb. 27, 1996
Applicant:
Inventors:
Masafumi Nishida, Ibaraki, JP;
Osamu Yamaguchi, Katano, JP;
Souichirou Fujioka, Sakai, JP;
Hiroshi Okamoto, Nara, JP;
Yoshiho Gotoh, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
2423342 ; 2423343 ; 360 71 ;
Abstract
A torque command supplied to a tape running unit for drawing out and driving a tape wound on a first reel is modulated by a torque modulator depending on a moment of inertia of the first reel, a winding radius of the tape wound on the first reel, a moment of inertia and a rotating radius of the tape running unit, which are detected by a parameter detector. The first motor is responsive to the modulated torque command for rotating the first reel, thereby keeping the tension of the tape constant.