Contact type paper counter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 27, 1990
Grant Date -
N/A
app pub date -
Mar 13, 1989
filing date -
Mar 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A contact sensor apparatus counts associated sheet products as they pass over a generally planar surface. a vacuum source draws a bottom surface of a sheet product onto the planar surface. A contact member is selectively deflected through engagement with the sheet product and deflects upwardly at the passage of the trailing edge of the sheet product. The contact member is connected to a sheet of piezoelectric material that is distorted upon deflection of the contact member. This produces an electrical charge representative of passage of paper over the sensor apparatus.
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