Web roll control and method
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United States of America Patent
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-
Jul 5, 1994
Grant Date -
N/A
app pub date -
Nov 2, 1992
filing date -
Nov 2, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A web roll (A) is positioned on a winding apparatus which includes a belt (B). An electric drive motor (C) drives the belt (B) roll (A) during winding and unwinding of the web. An ultrasonic signaling device (D) directs a signal downwardly towards the web roll and receives a return signal indicative of the size of the web roll for controlling the operation of the electric drive motor which rotates the web roll in a clockwise or counterclockwise direction.
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