Patents by Inventor Richard W. Kruse

Richard W. Kruse 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).

  • Concrete vibrator machine
    Patent number: 4256415
    Abstract: A concrete vibrator machine wherein the vibrators thereof are mounted on individual supporting structures that are adjustable longitudinally of the main frame of the machine, and wherein the vibrators are raised and lowered on their individual supporting structures in such a manner that if the vibrators strike an obstruction during lowering thereof, lowering of the vibrators may stop without damaging stress being placed thereon.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: March 17, 1981
    Assignee: CMI Corporation
    Inventors: Murray A. Rowe, Robert T. Conway, Herbert C. Glesmann, Richard W. Kruse