Patents by Inventor Huibert P. M. Pollmann

Huibert P. M. Pollmann 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).

  • Pressure equalizing support structure
    Patent number: 5079787
    Abstract: A support structure is provided which effects a pressure equalization. It mprises an enclosure filled with a large number of loose pieces. In a special embodiment the loose pieces are surrounded by a low friction material, such as nylon fabric, and are made of a deformable material, preferably foam-material. Another embodiment provides balloon-shaped pieces. Further an outer cover surrounding the enclosure may be provided.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: January 14, 1992
    Assignee: Stichting Revalidatiecentrum Amsterdam, Regional Centrum voor Revalidatle
    Inventor: Huibert P. M. Pollmann