Patents by Inventor John N. Wurst

John N. Wurst 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).

  • Low bobbin thread detector
    Patent number: 4825789
    Abstract: An optical low bobbin thread detector is disclosed utilizing particularly cost effective matrixed light emitting diodes for bobbin thread detection and alarm, and virtually eliminating false alarms by employing a system requiring detection of a predetermined number of successive valid low bobbin thread detections to justify actuation of the alarm.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: May 2, 1989
    Assignee: SSMC Inc.
    Inventors: Stephen A. Garron, John N. Wurst