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Title
Verfahren sowie Vorrichtung zum Erfassen des Beruehrereignisses eines fluiden Mediums mit einer Objektoberflaeche
Date Issued
1999
Author(s)
Schwaab, G.
Gramann, U.
Lawrenz, W.
Stock, A.
Patent No
1997-19748317
Abstract
NOVELTY - The surface contact detection method uses an ultrasonic wave field which is propagated through the dispensed fluid medium delivered by a fluid dispenser (1), with detection of a variation in the attenuation and/or reflection characteristics of the ultrasonic waves for indicating contact between the fluid medium and n object surface, for provision of a stop signal for the dispenser. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a device for detecting contact between a fluid medium and an object surface. USE - The surface contact detection method is used with an adhesive dispenser for fully automatic delivery of adhesive to discrete points on an object surface, e.g. a flat substrate. ADVANTAGE - The surface contact detection method allows precise control of the quantity of dispensed liquid. DESCRIPTION OF DRAWING(S) - The figure shows a cross-section through a device for detecting contact between a dispensed liquid and an object surface. Fluid dispenser 1
Language
de
Patenprio
DE 1997-19748317 A: 19971031