Patents by Inventor Walter List

Walter List 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).

  • Workpiece positioner for chuck and center machining
    Patent number: 4872380
    Abstract: A workpiece positioner usable with a lathe having a headstock rotatable about a lathe axis has a base adjacent the lathe and defining an upright base axis offset from the lathe axis, a gripper support pivotal on the base about the base axis and defining a horizontal support axis, a positioner head pivotal on the support about the support axis, and a pair of grippers each including a respective pair of gripper jaws displaceable on the head transversely of the support axis.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: October 10, 1989
    Assignee: Maschininfabrik Heid Aktiengesellschaft
    Inventors: Franz Holy, Walter List