Patents by Inventor Donald L. Helman

Donald L. Helman 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: 5791735
    Abstract: A headrest ?10! suitable for attachment to a wheelchair seating system, comprising: a cushioned backpad ?12!, a pair of laterally spaced apart cushioned sidepads ?14!, and a mounting assembly ?20! located substantially to the rear of said headrest ?10!. Said mounting assembly ?20! enables said backpad ?12! and said sidepads ?14! to rotate together as a unit about a vertical axis located forward of said mounting assembly ?20!. Said mounting assembly ?20! is formed such that said vertical axis substantially coincides with the spinal column of a human patient seated in a wheelchair. The rotational range of backpad ?12! and sidepads ?14! is manually adjustable and limited to a prescribed range. A force is formed resisting rotational displacement in said backpad ?12! and sidepads ?14! returning said headrest ?10! to a null, forward facing orientation. The strength of said force increasing with a corresponding increase in rotational displacement of said headrest ?10!.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: August 11, 1998
    Assignee: Sunrise Medical HHG Inc.
    Inventor: Donald L. Helman
  • Patent number: D361258
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: August 15, 1995
    Assignee: Cozy Craft, Inc.
    Inventor: Donald L. Helman