Patents by Inventor Henri J. J. Drabs

Henri J. J. Drabs 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).

  • Automatic detection and rejection of foreign bodies from _vegetables transported on a conveyor
    Patent number: 4262806
    Abstract: A device for detection and removal of foreign bodies from vegetables dispersed and transported on a conveyor belt consisting of a multichannel detection system based on reflection analysis of polarized infra-red light. The reflected light is amplified, filtered and applied to a delayed automatic gain control circuit (A.G.C.). The A.G.C. output is compared with a reference voltage window to control the ejection system.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: April 21, 1981
    Assignee: Elbicon Electronics PVBA
    Inventor: Henri J. J. Drabs