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:
Nov. 03, 1992
Filed:
Nov. 21, 1990
Larry G Durkos, Lebanon, IN (US);
Other;
Abstract
A tension control system for maintaining a substantially constant predetermined tension on material being unwound from or wound onto a roll of material. The control system includes a shaft for holding the roll of material and a motor coupled to the shaft for rotating the shaft at a predetermined speed to maintain the material at a substantially constant predetermined tension. The motor is mounted in a predetermined initial position and remains there when the material is at the predetermined tension. The shaft and motor are mounted to permit limited rotational movement of the motor relative to the frame in response to the tension on the material deviating from the predetermined tension. The system includes a displacement detector for detecting movement of the motor away from its initial preset position in response to the tension deviating from the predetermined tension. The system adjusts the speed at which the motor rotates the shaft by an amount based upon the displacement of the motor relative to its initial position to maintain the tension of the material at substantially the predetermined tension.