Patents by Inventor Wolfgang Buhren

Wolfgang Buhren 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).

  • Vacuum mattress, preferably for rescue vehicles
    Patent number: 4254518
    Abstract: A vacuum mattress of the type having a casing that is loosely filled with a multitude of synthetic plastic components so as to enable the mattress to adapt in shape to the body contour of a person thereon and which is retained in the body contour adapted shape by evacuation of the casing, is provided with support elements projecting above an upper surface plane of a central mattress-forming element and have at least a portion thereof extending in a direction across at least one end thereof. In preferred embodiments, the support elements are formed by separate casings from that of the central element and these casings are evacuatable separately and/or jointly from each other, and the support elements are configured so as to define an opening for a person's head and support for his shoulders.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: March 10, 1981
    Assignee: Dr. Ing. hc.F. Porsche Aktiengesellschaft
    Inventors: Wolfgang Buhren, Rainer Hoefs, Ulrich Bez
  • Vacuum mattress, especially for rescue vehicles
    Patent number: 4234982
    Abstract: A vacuum mattress having a casing which is loosely filled with a multitude of synthetic resin components so as to enable the mattress to adapt in shape to the body contour of a person thereon, and provided on said casing with a valve for evacuating the mattress so as to retain it in said body contour adapted shape.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: November 25, 1980
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Ulrich Bez, Wolfgang Buhren