Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined
Patent
1983-02-04
1984-05-08
Pianalto, Bernard D.
Coating processes
Measuring, testing, or indicating
Thickness or uniformity of thickness determined
4272082, 427285, B05D 500
Patent
active
044474652
ABSTRACT:
A coating system for automatically discharging a coating material from a nozzle onto objects moving relative to the nozzle in a path past the nozzle. Each object receives two separately located quantities of the coating material from the single nozzle. A first sensor detects the presence of an object at a first point upstream of the nozzle, and a second sensor detects the presence of the object at a second point downstream of the first point and yet upstream of the nozzle. A delay timer is responsive to either of the sensors to produce a delay signal after a delay time corresponding to a predetermined distance of travel by the sensed object. A duration timer is responsive to the delay signal to produce a duration signal for a duration time corresponding to a predetermined distance of travel by the sensed object. The duration signal is used to create a control signal for effecting discharge of the coating material from the nozzle onto each object.
REFERENCES:
patent: 3340847 (1967-09-01), Miller et al.
patent: 3682131 (1972-08-01), Algeri et al.
patent: 3688735 (1972-09-01), Brenner
patent: 3862414 (1975-01-01), Algeri
patent: 4166246 (1979-08-01), Matt
Nordson Corporation
Pianalto Bernard D.
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