Patents by Inventor Werner Wassmer

Werner Wassmer 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).

  • Fluid-flow valves
    Patent number: 4029295
    Abstract: A valve comprises a casing having two casing parts with a resilient membrane clamped between the parts. A switching member mounted within the casing deforms the membrane in each of a plurality of different switching positions, to selectively open and close communication between a plurality of connections of the valve.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: June 14, 1977
    Assignee: Hansen GmbH KG
    Inventor: Werner Wassmer