Loose end detector for tobacco articles
Number of patents in Portfolio can not be more than 2000
United States of America
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-
Apr 7, 1998
Issued Date -
N/A
app pub date -
Jan 28, 1992
filing date -
Jan 28, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for detecting loose ends in tobacco articles such as cigarettes comprises a stationary cam for positioning the articles prior to reaching a flat sensor surface. A pair of concentric electrodes are arranged on the sensor surface for generating an electric field. Cigarettes are moved through the field so as to create a field disturbance. Deviations from a predetermined field disturbance indicate that a cigarette is defective. A piece of thin glass, of about 5.5 mils, covers the sensor surface and is adhered thereto to protect against wear. Compared to surface protecting members previously used, the glass member significantly extends the wear life of the sensor, improves the sensitivity of the device, improves detection accuracy, and eliminates the need for daily readjustment of the field.
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