Patents by Inventor Johannes Jacobus Holthuis

Johannes Jacobus Holthuis 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).

  • Incremental feed system
    Patent number: 3993565
    Abstract: A precision system for moving a tool with very small increments with respect to a frame including at least two micrometer drive mechanisms each comprising a screw spindle and a cooperating nut and each provided with an intermittently driven worm and worm wheel. The tool is borne solely by the micrometer drive mechanisms that are supported in the frame. In a preferred embodiment is of each micrometer drive mechanism the worm wheel mounted on a spindle, one of said worm wheel and spindle being connected to the screw spindle and the other to the nut.
    Type: Grant
    Filed: October 12, 1972
    Date of Patent: November 23, 1976
    Assignee: Nederlandse Industrie voor Baggerwerktuigen Nivoba N.V.
    Inventor: Johannes Jacobus Holthuis