Patents Assigned to Nederlandes Centrale Organisatie Voor Toegepastinatuurwetenschappelijk Ondersoek
  • Ice deposition detector employing impedance change of a vibratory body
    Patent number: 4568922
    Abstract: A vibrating body is connected as one element of a voltage divider. A detector circuit is connected to the measuring point of the voltage divider. If ice is deposited on the body, its impedance changes and the resulting voltage change at the voltage divider is detected to provide an alarm or control function. The noted impedance change can be more reliably detected under a variety of conditions than the traditional vibration frequency or amplitude criteria.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: February 4, 1986
    Assignee: Nederlandes Centrale Organisatie Voor Toegepastinatuurwetenschappelijk Ondersoek
    Inventors: Gustaaf A. Schwippert, Louter W. van der Kolk