Patents by Inventor Stephen J. Matheson

Stephen J. Matheson 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).

  • Air support device
    Patent number: 5373595
    Abstract: This invention relates to a portable air support device having a plurality of air inflatable cells, arranged within a conveniently dissembled air support bag. The portable device comprises a novel air distribution manifold, control console and air distribution valve assembly to inflate a novel air flow quilt which provides an upward flow of air to a patient reclining thereon, to provide comfort and promote patient healing.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: December 20, 1994
    Assignees: Irvin Industries Canada Ltd., Namtec Corporation
    Inventors: Peter D. Johnson, Stephen J. Matheson, James V. Hogan, David B. Webb, John M. Rossiter
  • Distribution valve
    Patent number: 5343893
    Abstract: This invention relates to a fluid distribution valve comprising a port select valve structure wherein the flow of fluid from a fluid flow source is directed through a chamber of a rotatable member comprising a plurality of varying sized spaced ports which align with ports of a housing at various positions of rotation of the member to provide variations of fluid flow through the ports of the housing. The valve has particular utility as an air distribution valve in an air flow support mattress system.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: September 6, 1994
    Assignees: Irvin Industries Canada Ltd., Namtec Corporation
    Inventors: James V. Hogan, Stephen J. Matheson