Patents by Inventor Cary W. Pinkalla

Cary W. Pinkalla 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).

  • Conical air filter
    Patent number: 6626754
    Abstract: An air duct system includes a conical fabric filter disposed within a cylindrical air duct. In some embodiments, both the filter and the air duct are inflatable. A fabric collar and a pair of zippers not only allow the filter to be readily removed for cleaning, but also allow the air duct system to continue operating with the filter removed. Pleats can provide the filter with more surface area, and the pleats can be interconnected in an alternating pattern to inhibit the filter from over inflating.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: September 30, 2003
    Assignee: Rite-Hite Holding Corporation
    Inventors: Kevin Gebke, Cary W. Pinkalla
  • Conical air filter
    Publication number: 20030022617
    Abstract: An air duct system includes a conical fabric filter disposed within a cylindrical air duct. In some embodiments, both the filter and the air duct are inflatable. A fabric collar and a pair of zippers not only allow the filter to be readily removed for cleaning, but also allow the air duct system to continue operating with the filter removed. Pleats can provide the filter with more surface area, and the pleats can be interconnected in an alternating pattern to inhibit the filter from over inflating.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Inventors: Kevin J. Gebke, Cary W. Pinkalla