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. 02, 1977
Filed:
May. 29, 1975
Ken Ichiryu, Mito, JA;
Masayuki Shigeta, Katsuta, JA;
Toyotsugu Masuda, Hitachi, JA;
Haruo Kinoshita, Hitachi, JA;
Hitachi, Ltd., , JA;
Abstract
A roll eccentricity control apparatus for use with an automatic gage control device of gage meter type for a rolling mill comprising rolls for rolling the material to be rolled, a hydraulic jack for providing the rolls with rolling pressure, a flow rate control valve and a valve control device for adjusting the roll gap by controlling the quantity of oil in the hydraulic jack, a setting device for applying a desired gage command to the valve control device and a gap detector for detecting the roll gap and feeding back the detected value to the valve control device; said apparatus comprising a correlation detector for detecting the correlation between the rolling pressure and a reference signal wave obtained from a roll rotation signal, a memory for storing the output of the correlation detector, and a device for retrieving the correlation output stored in the memory by the use of a signal associated with the rotation of the rolls and applying a command to the gate control device.