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:
May. 13, 1986
Filed:
Aug. 10, 1984
Charles R Bradlee, Sidney, OH (US);
The Monarch Machine Tool Company, New Bremen, OH (US);
Abstract
A leveling apparatus for leveling strips of metallic material comprising a support housing; a guide tube, rotatably attached to the support housing, having a hollow interior and a longitudinal slot; a cylindrical support roll, rotatably attached to the housing and positioned within the guide tube; a cylindrical work roll having a diameter substantially less than the support roll and positioned within the slot; and a feedback control for rotating the guide tube to position the work roll such that forces exerted upon the work roll by a metallic strip passing over it act to hold the work roll against the support roll, and tangential components of the force tending to urge the work roll against the guide tube are minimized. In a preferred embodiment, the control comprises a pair of opposing cylinders which are pressurized by a source of compressed fluid. A servo valve responsive to forces exerted by the work roll upon the guide tube depressurizes one of the cylinders and pressurizes the other causing an imbalance in which a rod joining the cylinders is displaced to rotate the guide tube to a position in which the force exerted by the work roll upon the guide tube is minimized.