Patents by Inventor Winrich Hammerschmidt

Winrich Hammerschmidt 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: 5369895
    Abstract: The invention relates to a plastic shoe with improved ventilation, in which the ventilation openings 7 located in the vamp area 6 of the shoe upper 5 are connected with one another by having their orifices located on the inside of the shoe upper 5 in a bulging out part 8. An additional arcuate chamber 9 is formed by the bulging out part 8 and is limited by the adjacent not bulging out part of the wall surface, which is dedicated, in connection with the ventilation openings 7, to a predetermined degree of good ventilation of the shoe in the area of the instep of the foot.(The reference numbers are those shown in FIG. 2.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: December 6, 1994
    Assignee: NATEC Institut fur naturwissenschaftlichtechnische Dienste
    Inventor: Winrich Hammerschmidt
  • Patent number: 4751924
    Abstract: The invention relates to a balloon catheter, particularly an endotracheal theter, with a catheter tube of elastic, tissue-compatible material, in which the signal balloon (6) near the proximal end (3) of catheter tube (1) and the retention sleeve (4) near the distal end (2) of catheter tube (1) are present in a foil hose (15), extending over the entire length of the catheter tube, sheathing the catheter, and they are preformed in the hose in one piece. Foil hose (15) engages loosely on the catheter tube at the points of signal balloon (6) and retention sleeve (4), and is otherwise connected tightly with the catheter tube. Feed tube (5) connecting retention sleeve (4) with signal balloon (6) and the proximal end of the catheter tube can be formed by one or more grooves (14) in the outside wall of respirator tube (1), and the foil hose (15) covers the grooves to seal them gas- and liquid-tight from the outside.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: June 21, 1988
    Assignee: NATEC, Institut fur naturwissen-schaftlichtechnische Dienste GmbH
    Inventors: Winrich Hammerschmidt, Gerhard Zumbruch