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. 12, 2003
Filed:
Aug. 17, 2001
Hiroaki Kuwano, Yokosuka, JP;
Kouji Shirakawa, Yokohama, JP;
Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo, JP;
Abstract
A control unit of hydraulic pinch rolls comprises: position detectors that detect position of right and left cylinder pistons ; an arithmetical unit that calculates a difference of output from the position detectors; a controller that processes a calculated value to make correction output; and add-subtract units that add/subtract the correction output from the controller such that the correction output is added to an end portion of the pinch rolls having a wider gap in a direction to push the gap and the correction output of the same amount is subtracted from the opposite end portion, by which the set values of pressing force control provided for right and left independently are corrected. Thus, a defective winding shape can be suppressed.