Patents by Inventor Mark S. Bergmann

Mark S. Bergmann 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: 4804009
    Abstract: The incremental interface system of the present invention includes a pneumatic input means for providing a first pressure to be regulated. A pressure repeater means includes a volume relay having a first chamber coupled to the intermediate bus of the input means and a second chamber coupled to a pneumatic transducer to be controlled, the first chamber and the second chamber being in fluid flow isolation one from the other. The pressure repeater means provides a second pressure at its second chamber which has a predetermined relationship to the first pressure. A reservoir means is coupled to the intermediate bus between the input means and the repeater means for limiting the rate of change of the first pressure. The input means, repeater means and reservoir means cooperate to define a substantially constant volume of fluid.
    Type: Grant
    Filed: August 24, 1984
    Date of Patent: February 14, 1989
    Assignee: Johnson Service Company
    Inventor: Mark S. Bergmann