Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2007-05-22
2007-05-22
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C073S30400R, C073S29000R
Reexamination Certificate
active
10900996
ABSTRACT:
A liquid level sensor comprises a plurality of electrodes arranged in a defined relationship with respect to a container filling trajectory, a signal generator coupled to one or more of the plurality of electrodes, a signal receiver coupled to one or more of the plurality of electrodes, and a sensing circuit coupled to at least one of the signal generator and signal receiver. The sensing circuit is configured to produce an output indicative of electrical resistance between at least one pair of the plurality of electrodes. The sensing circuit may be associated with the signal receiver and/or with the signal generator.
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Bennett Todd N.
Emery Michael P.
Flores Javier H.
Harootunian Alec T.
Salzmann Philip E.
Knobbe Martens Olson & Bear LLP
Vertex Pharmaceuticals Inc.
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