Patents by Inventor Helmut Flauger

Helmut Flauger 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).

  • Vacuum pump assembly with built-in shutoff valve
    Patent number: 4193742
    Abstract: A vacuum pump assembly is provided which includes a built-in pneumatic valve for closing the suction port of a vacuum pump of the assembly with an auxiliary valve being provided for controlling operation of the pneumatic valve. An electromagnetic valve is utilized as the auxiliary valve and a generator coupled with the shaft of the vacuum pump generates electric current in accordance with the operating stages of the pump in order to control the auxiliary valve.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: March 18, 1980
    Assignee: Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    Inventors: Klaus Fischer, Helmut Flauger, Kurt Balzer, Roland Fischer