Patents by Inventor Charles M. Wiltberger

Charles M. Wiltberger 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: 7114776
    Abstract: A lumbar support cushion consists of a seat portion and a back portion, foldably joined along a crease positioned therebetween. An opening extends in a continuous manner upward into the back portion, and downward into the seat portion. The opening may have an oval shape. In one embodiment, a support member is provided, and is positioned across the front of the back portion. The position of the support member along the back portion may be made adjustable, for example by the use of mating hook and loop material on the support member and a rear portion of the back portion.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: October 3, 2006
    Inventor: Charles M. Wiltberger
  • Patent number: 5217269
    Abstract: A portable handled door stop with an elongated rod, a handle a one end, and a wedge-shaped block at the other end of the rod. The rod extends for a length which is about equal to the distance between the user's hand in the lowermost position of the arm and the floor with the user in an upright position. A molded plastic one-piece construction formed with a cross section similar to an I-beam. A non-skid surface is provided on the base of the unit. A hook-shaped projection at the top end of the door stop enables it to be stored when not in use.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: June 8, 1993
    Inventor: Charles M. Wiltberger