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:
Jul. 10, 2001
Filed:
Aug. 06, 1999
Takashi Mitsuhashi, Gunma, JP;
Ogura Clutch Co., Ltd., , JP;
Abstract
A tension apparatus having a mechanical section, storage unit, output torque calculation section, and exciting current calculation section is disclosed. The mechanical section has an electromagnetic brake driven by an exciting current to generate an output torque and applies a tension to a material in continuous form, which is being wound and stretched, in accordance with the output torque of the electromagnetic brake. The storage unit stores actually measured characteristics between an exciting current value and the output torque of the electromagnetic brake in advance. The output torque calculation section obtains the output torque of the electromagnetic brake in correspondence with an input tension instruction value. The exciting current calculation section obtains an exciting current value of an exciting coil, which is necessary to generate the output torque of the electromagnetic brake, by looking up the storage unit.