Patents by Inventor Josef Birk

Josef Birk 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: 5572808
    Abstract: An orthopedic shoe insert for correcting the adduction of the large toe is disclosed. The insert comprises generally a foot bed-like rear foot shell whose front edge lies approximately below the ball of the large toe and a corrective lobe molded on the side for supporting and guiding the large toe. The inside surface of the corrective lobe is slightly curved in a concave manner. Stiffening ribs are molded externally into the transition region between the corrective lobe and the rear foot shell. The lower edge of the corrective lobe is curved upwardly in order not to interfere with the rolling motion when walking. Because of the shaping and the use of elastic thermoplastic material, the corrective lobe is swiveled inwardly when walking, thereby actively correcting the malpositioning of the large toe.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: November 12, 1996
    Assignee: Solor Schuhforschung und Entwicklung-GmbH
    Inventor: Josef Birke
  • Patent number: 4691695
    Abstract: In an apparatus for medical treatments, examinations or tests comprising a hamber connectible to a vacuum source and having at its one end side a passage aperture with a flexible sealing member, the chamber is formed of a foldable bellow provided with a support structure adapted to be dismantled. In axial direction of the bellow, the support structure contains a plurality of substantially parallel-mounted peripheral members backing up peripherally the bellow and being mobile relative to each other, as well as mobile longitudinal stiffening elements secured to the peripheral members.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: September 8, 1987
    Assignee: Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfart e.V.
    Inventors: Josef Birk, Friedhelm Baisch, Heinz J. Borger