Patents by Inventor David Valletort Haysom

David Valletort Haysom 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: 5980449
    Abstract: An open care bed or infant warmer having a mattress supported on a mattress base cantilevered from a columnar or vertically disposed "back bone". The column carries an infrared radiant heater head at its upper end which directs heat down towards the mattress. The lower end of the column sits on a base of the infant warmer which is provided with castors for transporting the warmer. The mattress base comprises a box like frame over which a sheet is stretched to provide tensioned support for a mattress. The sides of the mattress base are provided with fold down side walls which are normally retained in a vertical position but are lowerable to a horizontal position, by free falling under the control of a friction controlled damping axle configuration. Adjustment of the angle of inclination of the mattress base is made possible by the use of a non-parallel arm type system providing a virtual pivot point for the mattress base which may be positioned near the center of the mattress.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: November 9, 1999
    Assignee: Fisher & Paykel Limited
    Inventors: Mark Gregory Benson, Andrew Paul Maxwell Salmon, Christopher Peter Hutchinson, David Valletort Haysom, Richard Barry Doig, Paul Joseph Moody