Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2007-10-02
2007-10-02
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S618000, C073S628000, C250S559120
Reexamination Certificate
active
10529470
ABSTRACT:
In order to check a material web (12), in particular a film web, with regard to the correct arrangement of a tear-off strip (11) extending in the longitudinal direction of the material web (12), ultrasonic transmitters are used, specifically an ultrasonic transmitter (11) on the one hand and an ultrasonic receiver (19) on the other hand. The sensors are arranged on opposite sides of the material web (12) in such a way that, if appropriate, focused ultrasonic waves are aimed specifically at the region of the tear-off strip (11). If a tear-off strip (11) is missing, an appropriate signal is generated by the ultrasonic receiver (19).
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Czarnotta Michael
Focke, legal representative Doris
Focke, legal representative Jürgen
Focke & Co. (GmbH & Co. KG)
Saint-Surin Jacques M.
Sughrue Mion pllc.
Williams Hezron
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