Patents by Inventor Marc A. Gruenenfelder

Marc A. Gruenenfelder 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: 6131862
    Abstract: An ergonomic support system for receiving supporting the forearm and/or wrist of a person engaged in an activity on a supporting surface comprises a support member of plastic foam material extending longitudinally and laterally and having a bottom surface for resting on the supporting surface, a top surface adapted for receiving the forearm and/or wrist of the person, a transverse dimension as measured between the top surface and the bottom surface, and a peripheral surface extending between the top surface and the bottom surface. The support member exhibits a substantially uniform value of indentation force deflection, as measured by ASTM D3574 Test B1, which is in the approximate ranges of 488 lbf to 34 lbf @10.degree. C., 27 lbf to 4 lbf @21.degree. C. and 9 lbf to 3 lbf @38.degree. C. The support member has a total thickness in the approximate range of one to two inches.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: October 17, 2000
    Inventor: Marc A. Gruenenfelder
  • Patent number: 5884879
    Abstract: An ergonomic support pad for supporting the forearm and wrist of a person operating a computer's in-out device may comprise bottom, middle, and top layers of open celled polyurethane foam material of substantially uniform thickness, preferably of the type which softens on contact with a warm surface thereby providing uniform pressure distribution and firm, yet fluid, support. The bottom layer has a bottom surface for resting on a supporting surface and the top layer has a top surface for engageably receiving the forearm and wrist of the person. Each layer exhibits different indentation force deflections, the bottom layer being firmest and the top layer being most supple. The support pad is approximately one to two inches thick, preferably four sided, and may be round or oval or of other shapes as viewed in plan. When multi-sided, it may have biased corner surfaces joining adjoining pairs of longitudinal and lateral edge surfaces.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: March 23, 1999
    Inventor: Marc A. Gruenenfelder