Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2008-07-15
2008-07-15
Epps, Georgia Y. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C073S293000, C073S319000
Reexamination Certificate
active
07399985
ABSTRACT:
A detection system for determining material level in a container where the container has an opening and an optical window mounted to the opening. A sensor element is mounted to the container adjacent the window. The sensor element has an optical emitter and an optical receiver positioned to form a triangular vertex with the material surface level within the container.
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Adams Martin
Barnacle Robert
Bell Nicholas
Kilkerr William
Mruk Walter
DataOnline, L.L.C.
Epps Georgia Y.
Legasse Jr. Francis M
LandOfFree
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