Patents by Inventor Tom Ensink

Tom Ensink 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: 4067264
    Abstract: A rail-borne shunting locomotive, to be operated through radio control by a driver as he moves around the locomotive, has a central power plant compartment, a cabin at each end adjacent the power plant compartment, gangways on each side extending alongside the power plant compartment from one cabin to the other, an open platform at each end in front of the cabin and at each side of the platform, at least one step for the driver to stand on at a lower level than the platform. Each cabin is directly accessible from both gangways and from the respective platform. A wide range of operating locations is available to the driver and access to them is convenient.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: January 10, 1978
    Assignee: Hoogovens Ijmuiden B.V.
    Inventor: Tom Ensink
  • Patent number: 4022409
    Abstract: Electrically driven railway point operating apparatus having a biasing device whereby, without damage to the operating mechanism the point can be forced open against its closing bias by the wheels of a vehicle. The point operating slide is moved by a lever which in turn is moved by a driving member which is driven in either of opposed directions by a reversible electric motor. The driving member carries a roller which is located in an aperture in the lever, so that relative movement of the lever and the roller is permitted. The roller is returned by the motor to an intermediate position, when a switching operation is complete, so that the lever can move relative to the roller if the point is forced open.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: May 10, 1977
    Assignee: Hoogovens Ijmuiden BV
    Inventors: Tom Ensink, Rieks Zonderman