Patents by Inventor Darwin D. Sonnenberg

Darwin D. Sonnenberg 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: 3964744
    Abstract: An automatic pin setting machine having a striker which periodically passes through the flow path of the pins and ball on the way to their elevating wheels and which removes the ball from the flow path without interrupting the flow of pins. The striker preferably moves downwardly and rearwardly as it approaches the position where it normally engages the ball and then moves upwardly and forwardly. The striker is also preferably driven in timed relation to the pin elevating mechanism. In the embodiment shown and described, the striker rotates about a stub shaft having a longitudinally centerline which extends forwardly and downwardly at an angle to the centerline of the ball elevating wheel.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: June 22, 1976
    Inventor: Darwin D. Sonnenberg