Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Patent
1981-09-30
1984-05-01
Schwadron, Martin P.
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
137 91, 137 92, 364500, 427 68, G05D 1106, G06F 1546
Patent
active
044455267
ABSTRACT:
A system and method for continuously maintaining the specific gravity and viscosity of the slurry applied to a television picture tube includes a container for dispensing slurry to the faceplate of such a tube and for receiving excess slurry from the faceplate. The level of slurry in the container is held constant by the addition of materials to the container. The first added material has a specific gravity greater than that of the material dispensed to the faceplate. The second material has a viscosity which is greater than that of the material dispensed to the faceplate. The quantity of the third material is determined by the specific gravity and viscosity corrections required to bring the parameters of the slurry in the first container to the preselected values. By adding the three materials to the dispenser in accordance with error signals representative of the three parameters, the specific gravity, viscosity and level are continuously held within specified limits.
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Hallacher Lester L.
Irlbeck Dennis H.
RCA Corporation
Schwadron Martin P.
Shay James R.
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