Patents by Inventor Willem G. Nat

Willem G. Nat 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).

  • Device for controlling a longitudinally movable driving means
    Patent number: 4194434
    Abstract: A device for controlling both the displacement of, and the transmittal of force by, a longitudinally movable driving apparatus comprising a piston rod which is hydraulically movable inside a cylinder, an emitter and receiver for ultrasonic waves, which are transmitted between a movable and a fixed part of the driving apparatus, a logic circuit and a controllable source of force, said receiver being electronically connected to said controllable source of force via said logic circuit.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: March 25, 1980
    Assignee: Hoogovens Ijmuiden, B.V.
    Inventors: Albertus Italiaander, Arie Kruk, Willem G. Nat, Nicolaas M. J. Rees