Patents by Inventor Jan V. Gennep

Jan V. Gennep 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: 5063796
    Abstract: A tool driver with a handle for loosening and tightening fasteners or drilling holes in hard-to-reach locations. The tool driver contains a direct drive shaft and a mechanical means for converting force applied to the direct drive shaft to motion of a transverse tool attachment. A second tool attachment is located at one end of the direct drive shaft permitting a tool to be directly driven. A handle is provided for stabilizing and controlling the tool driver, as well as securing and containing extra tools. Alternatively, the handle is a container for batteries used to power a luminous element which illuminates the workpiece.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: November 12, 1991
    Inventor: Jan V. Gennep
  • Patent number: 4151981
    Abstract: A hoist is described which combines a block and tackle with a windlass. A drum brake and operating linkage therefor incorporated into the hoist is to automatically provide braking to prevent a load from causing unwanted reverse rotation of the windlass. Lowering of the load is achieved by applying against the pressure of the brake sufficient reverse rotational force to overcome the brake resistance and cause lowering. The brake shoes have a common pivot point whose location with respect to the brake drum can be changed to adjust the relative degree of braking provided by each of the shoes. The hoist also includes mechanism which prevents the hoist line from being wrapped around the hoist in a direction which would render the brake applying linkage ineffective.
    Type: Grant
    Filed: October 12, 1977
    Date of Patent: May 1, 1979
    Inventor: Jan V. Gennep