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Paul G Weitz Jr, Cecil Franklin: Electrode assembly for a capacitance type probe. Simmonds Precision Products, Edwin E Greigg, October 25, 1983: US04412270 (11 worldwide citation)

An electrode assembly for use in a capacitance type probe for measuring volume or height of an electrically conductive liquid. The probe includes an inner conductor which an electrical conductive wire is connected at one end. The inner conductor is surrounded by a thick-wall TEFLON tube which functi ...


2
Cecil Franklin: D.C. signal currents in capacitance gaging systems. Simmonds Precision Products, Edwin E Greigg, May 3, 1977: US04020691 (4 worldwide citation)

A signal transmission system responsive to A.C. signals has rectifier means arranged to receive the A.C. signals. The rectifier means are connected to first and second circuit paths so as to establish respective unidirectional currents of opposite polarity and dependent on the A.C. signals, in the t ...


3
Cecil Franklin: Pre-calibrated fuel quantity capacitive probe. Simmonds Precision Products, Edwin E Greigg, July 2, 1985: US04526027 (2 worldwide citation)

A method and apparatus for pre-calibrating capacitive-type fuel quantity probes is proposed in which a voltage divider excitation source is connected to the low impedence electrode of the probe and is used to trim the apparent capacitance down to within a small tolerance of .+-.0.1% of the precise d ...


4
Cecil Franklin: Signal selection circuit. Simmonds Precision Products, Edwin E Greigg, November 9, 1982: US04358755 (1 worldwide citation)

A signal selection system, including a plurality of detection circuits having inputs receiving respective direct voltage signals and outputs connected to a scan bus. Each detector circuit includes an operational amplifier having a non-inverting input receiving one of the direct voltage signals, an i ...


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