Patents by Inventor Ronald E. J. Monkhorst

Ronald E. J. Monkhorst 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 tilting, carrying and transporting a grand piano
    Patent number: 5575609
    Abstract: A device for tilting, carrying and transporting a grand piano (2) comprises a wheeled frame (3, 4) designed to run underneath the grand piano. Elements for gripping (5), lifting (14) and tilting (17) the grand piano are fitted on the frame. The gripping elements (5) are made U-shaped to grip at least the bottom face (6), an adjacent end (7) face and the top face (8) of the grand piano. The gripping elements (5) are provided with wheels (11) and are detachably connected to the lifting and tilting devices. After lifting and then turning the piano through 90.degree. and the like, the piano can be moved independently with the gripping elements by detaching the lifting and tilting devices. The gripping elements can form part of a case for protecting against damage during further transportation.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: November 19, 1996
    Assignee: Ronald Edward Jan Monkhorst
    Inventors: Ronald E. J. Monkhorst, Diemer J. Roodenburg