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. 15, 1995
Filed:
Oct. 15, 1993
Gaylen R Hinton, Merced, CA (US);
Other;
Abstract
An apparatus and method for controlling the tension and stopping action of web material fed from a supply roll is disclosed. A supply roll of web material is supported on a support assembly. A brake is operatively connected to the support assembly for applying a braking force onto the support assembly to apply tension onto the withdrawn web material. The diameter of the supply roll is sensed and a signal is generated to the power supply of a brake proportional to the diameter of the supply roll to vary the applied braking force and maintain a constant tension on the web material during its withdrawal. A stopping signal is generated to the brake power supply during stopping operation of film withdrawal to increase the braking force supplied to the support assembly. The stopping signal is an additive combination of a first signal that is essentially proportional to the diameter of the supply roll and a second signal that is essentially constant.