Coating apparatus – With indicating – testing – inspecting – or measuring means
Patent
1990-11-09
1993-06-22
Jones, W. Gary
Coating apparatus
With indicating, testing, inspecting, or measuring means
118663, 118261, 118413, 118419, 427 8, 427356, 340689, B05C 1104
Patent
active
052213510
ABSTRACT:
A process for operating a coating device provides for capturing variations of the angle of the coating edge of a doctor element, for instance in relation to the horizontal, directly by a signal generator attached to the doctor element in the vicinity of its coating edge. This signal generator may work on electromagnetic basis so that the signal will be transmitted to a receiver without any line. Preferably a tilt switch is provided which determines slight variations of a set angle of the coating edge relative to, for example, the horizontal by means of displacement of a mercury pearl and two electrodes which will be short-circuited by the mercury pearl. Other embodiments can include a laser or LED as a signal source and a CCD camera as a receiver, or an ultrasound source can be used as a signal generator.
REFERENCES:
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patent: 4755806 (1988-07-01), Villarreal
patent: 4880672 (1989-11-01), Ericksson
patent: 4884067 (1989-11-01), Nordholm et al.
patent: 4906335 (1990-03-01), Goodnow et al.
patent: 4907529 (1990-03-01), Mannio
patent: 4919756 (1990-04-01), Sawdai
patent: 4966093 (1990-10-01), Sommer
Esser Reinhard
Graab Helmut
Martin Claus
Burns Todd J.
Jones W. Gary
Zanders Feinpapiere AG
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