Patents by Inventor Ivo Russ

Ivo Russ 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).

  • Circuit arrangement for a sensor element
    Patent number: 5973417
    Abstract: A circuit arrangement (11) has an activating circuit (13) for a sensor element (12) of a touch contact switch, which in one embodiment of the invention contains a frequency generator (16). The frequency generator (16) generates a frequency-modulated activating signal (17), which is applied to the sensor element (12). In another embodiment the forming of the activating signal (17) takes place in a microcontroller (48), containing eventually the activating part (13) and or the evaluation of the signal. Through passing through a large frequency range for the activating signal (17), the influence of extraneous signals, even when using a lower signal voltage, is minimized.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: October 26, 1999
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventors: Bernhard Goetz, Ivo Russ
  • Device for detecting a cooking vessel positioned in a heating zone of a cooker or heater
    Patent number: 5296684
    Abstract: The device comprises a sensor supplying a sensor signal which varies as a result of the placement of a cooking vessel in a heating zone of a heating appliance. The device includes evaluating circuit which, as a function of the sensor signal, supplies an output signal. The evaluating circuit produces the output signal as a function of the rate of change of the sensor signal to indicate the presence or absence of cookware in the heating zone of the heating appliance.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: March 22, 1994
    Assignee: E.G.O. Elektro-Gerate Blanc u. Fischer
    Inventors: Willi Essig, Ivo Russ