Patents by Inventor Siegfried Kettner

Siegfried Kettner 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).

  • Sealing device for a multiway valve and a method for the production thereof
    Patent number: 5190078
    Abstract: A sealing device which is more particularly designed for pneumatic multiway valves. The device comprises a holding sleeve, which both at its outer periphery and also at its inner periphery has a plurality of axially spaced circumferentially extending holding recesses, wherein sealing elements are held and at least the inner sealing elements are constituted by sealing material injected into the associated holding recesses directly. Furthermore the invention provides a method for the simple possible of the such a sealing device.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: March 2, 1993
    Assignee: Festo KG
    Inventors: Kurt Stoll, Siegfried Kettner