Patents by Inventor Walter Scheller

Walter Scheller 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: 6120529
    Abstract: To heat horizontal surfaces on which patients are placed after surgery, an irradiation apparatus with halogen lamps is provided, the radiation of which is directed toward the horizontal surface to heat it. The surface temperature prevailing in the irradiated area of the horizontal resting surface is detected by a pyrometric sensor as long-wave infrared radiation. This temperature value is used as the controlled variable and is compared with a predetermined nominal value, such as 37.degree. C. In the event of a deviation, a control signal corrects the irradiation intensity by adjusting the power supply to the halogen lamps.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: September 19, 2000
    Assignee: Heraeus Med. GmbH
    Inventors: Jorg Eduard Hartge, Walter Scheller, Markus Steckhan, Stefan Greif, Georg Czernin
  • Patent number: 5934888
    Abstract: An aspirator pump, especially for medical purposes, has a receptacle with two chambers arranged alongside each other, which are connected with a suction tube, and on each of which an element is arranged which is movable approximately parallel to the other, each partially enclosing a hollow space for generating a vacuum. The two movable elements are connected to each other by means of a lever, whose two end parts are attached at the upper area of the respective movable elements, and whose middle part is movably attached in a bearing positioned between the chambers. In the upper area of each movable element a one way valve is installed which opens when the pressure in the hollow space is higher than the surrounding air pressure. An easy operation and cleaning, as well as a reliable aspiration is obtained with the aspirator pump, owing to the fact that at all times a chamber and a movable element enclose a common, variable hollow space, wherein the movable element bounds the upper area of the hollow space.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: August 10, 1999
    Assignee: Heraeus Med GmbH
    Inventors: Rudolf Marka, Stefan Maier, Matthias Peuker, Hans-Joachim Kuhn, Walter Scheller