Patents by Inventor Gerardus L. G. Ewals

Gerardus L. G. Ewals 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).

  • Temperature sensor and temperature measuring system using the temperature sensor
    Patent number: 5735604
    Abstract: The invention relates to a sensor unit and a temperature measuring system that includes the sensor unit for the contactless determination of the object temperature (T.sub.v) of at least a part of an object. The sensor unit is placed near the object and includes a first and second plate. A temperature-sensitive sensor is disposed on each plate to produce first and second sensor signals which represent the temperature of the first and second plates, respectively. The system also includes a control unit which processes the first and second sensor signals in combination for determining the object temperature (T.sub.v). Preferably, the control unit employs a Kalman filter. Also, the temperature measuring system is applied to an image reproduction machine to determine the temperature of a roller or belt.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: April 7, 1998
    Assignee: Oce-Technologies, B.V.
    Inventors: Gerardus L. G. Ewals, Theodorus A. G. Heeren