Patents by Inventor Dieter Kemmler

Dieter Kemmler 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).

  • Closure device for a conveying unit operating in a vacuum
    Patent number: 5575596
    Abstract: A closure device for the discharge outlet of a bulk material conveying unit which operates under vacuum. The outlet has a circular cross-section, and the outlet opening of the conveying unit is closed by means of a freely movable closure element, particularly a ball. The closing effect is achieved by means of a vacuum in the conveying unit. In the open position, i.e. after the vacuum is switched off, the ball moves downward and rests on a supporting device and thereby forms an annular discharge outlet cross-section which is interrupted only by the struts of the supporting device.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 19, 1996
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Michael Bauer, Otto Brandauer, Dieter Kemmler