Fluid handling – Liquid level responsive or maintaining systems – Electrical characteristic sensing
Reexamination Certificate
2005-03-22
2005-03-22
Walton, George L. (Department: 3753)
Fluid handling
Liquid level responsive or maintaining systems
Electrical characteristic sensing
C073S293000, C137S002000, C137S386000, C137S486000, C137S487000, C137S599110, C137S601130, C137S601140, C137S601200, C164S155200, C164S450400, C250S577000, C251S005000, C251S007000
Reexamination Certificate
active
06868861
ABSTRACT:
A level control system for controlling the thickness of a work material in a slurry form cast upon a moving belt includes a fluid reservoir disposed above the belt, a sensor lens assembly for sensing the slurry height within such reservoir, and a control valve for adding slurry to the reservoir. A lens disposed near the moving belt and above the reservoir is coupled by fiber optics to a remote sensor amplifier for detecting the height of the slurry. A control circuit responsive to the light sensor regulates the flow rate of the slurry through the control valve.
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Cahill von Hellens & Glazer, P.L.C.
Credence Engineering Inc.
Walton George L.
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