Patents by Inventor Everette D. Krayenhagen

Everette D. Krayenhagen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5971313
    Abstract: The present invention provides apparatus for equalizing the tension across the width of a web traveling under tension in a generally flat plane. The apparatus includes a longitudinal extending bladder formed of an elastic material and inflated with a fluid at a predetermined pressure, and a support structure for supporting the bladder beneath the traveling web and across the width thereof so that the bladder is positioned at a predetermined height above the flat plane of the traveling web whereby any variances in the tension across the width of the web will be equalized by the bladder. A plurality of finger elements are mounted to the support structure to extend between the bladder and the traveling web to prevent abrasive wear on the bladder by the traveling web.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: October 26, 1999
    Assignee: Eridan International, Inc.
    Inventor: Everette D. Krayenhagen