Patents by Inventor Michael Joachim Mansvelt

Michael Joachim Mansvelt 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: 5702328
    Abstract: An exercise device includes a base part adapted to rest on a floor or another surface. The device includes a first upwardly extending part extending upwardly from the base part and, spaced apart upon the base part, a second upwardly extending part is provided. A lever frame, for supporting a person thereon, is pivoted by way of a pivotation mechanism relative to the first upwardly extending part. An engagement device is provided to act on the second upwardly extending part at a position higher than the lever frame so as to allow a person supported on the lever frame to engage with the engagement device to pivot the lever frame upwardly by way of the pivotation mechanism against the force of the person's weight acting on the lever frame and to thereby lift the person supported on the lever frame.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: December 30, 1997
    Inventor: Michael Joachim Mansvelt