Patents by Inventor Johan Bernard Van Randen

Johan Bernard Van Randen 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).

  • Vibrating device and a method for driving an object by vibration
    Patent number: 6604583
    Abstract: A device for driving an object by vibration, in particular a pile or sheet piling to be driven into the ground be removed therefrom, which device comprises a first eccentrically rotatable weight (1, 2) and a second eccentrically rotatable weight (3, 4), which weights are interconnected by a phase shifter (13) which is capable of adjusting the rotational position of the weights (1, 2; 3, 4) relative to each other. The phase shifter (13) comprises a differential.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: August 12, 2003
    Assignee: International Construction Equipment B.V.
    Inventor: Johan Bernard Van Randen