Patents by Inventor Thomas E. Pfender

Thomas E. Pfender 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: 7089989
    Abstract: A folding door apparatus for homes and other building structures that is formed of a plurality of panels hinged together in accordion fashion. The door panels are raised and lowered along parallel vertical rails by a pair of winding reels and cable. A stability pin and a plurality of guide pins extend from the outer side edge of selected panels. The rails are hinged to the structure's flooring, and define an inner and outer trackway. The inner trackway for receiving the stability pin, and the outer trackway for receiving the guide pins. The inner trackway further defines a release point at the approximate midway of the length of the rail. In application raising the door panels to an open position, the stability pin remains engaged within the inner railway until stability pin is raised to the release point. At release point the stability pin is disengaged from inner railway for proper folding of the panels.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: August 15, 2006
    Inventor: Thomas E. Pfender
  • Patent number: 4290383
    Abstract: A spraying arrangement having particular adaptability for use in combination with a conveyor installation characterized by conventional sprayer equipment for painting or coating production parts, where excess paint or coating material is deposited on a back up shield, the latter serving to overcome, or at least minimize, overspray.Particular importance of the arrangement lies in the fact that the load capabilities of the conveyor can be more fully utilized, i.e. the parts under process can be sprayed from opposite sides of the aforesaid shield, being mounted on the same conveyor hanger.The shield may be in the form of selectively movable porous material and, in the instance of electrostatic paint spraying, a grid, charged with the same electrical potential as the part, is disposed within passes of the shield for even more effective excess material collecting purposes.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: September 22, 1981
    Assignee: Creative Craftsmen, Inc.
    Inventor: Thomas E. Pfender