Patents by Inventor Willi Bonk

Willi Bonk 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).

  • Rotary-piston measuring device
    Patent number: 3956939
    Abstract: A cylinder has spaced ends and a piston is slidably and turnably received in this cylinder. An opening is provided through which a pressure fluid is admitted into the cylinder at one end, and an arrangement is provided which is connected with the piston so that counter-weights can act upon the piston in a sense opposite to the pressure exerted by the pressure fluid. The arrangement includes a ball and socket structure.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: May 18, 1976
    Assignee: H. Maihak A.G.
    Inventors: Willi Bonk, Heinz Delin