FLUID SENSOR AND METHODS OF MAKING COMPONENTS THEREOF

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20090120169A1
SERIAL NO

11938621

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A fluid sensor has an electrically grounded header and a plurality of feedthrough conductors extending through the header between opposite ends of the header. The feedthrough conductors are connected to a piezoelectric tuning fork resonator. A temperature sensor is adjacent the tuning fork resonator. A shroud partially encloses the tuning fork resonator and temperature sensor. A printed circuit board is in conductive electrical contact with the feedthrough conductors. The printed circuit board includes an ASIC chip operable to transmit a variable frequency signal to the tuning fork resonator through the feedthrough conductors to oscillate the tuning fork resonator and to monitor impedance of the tuning fork resonator as a function of frequency. The ASIC chip is spaced from the feedthrough conductors a distance of no more than about 2 mm. The printed circuit board is spaced from the tuning fork a distance of no more than about 20 mm.

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Patent Owner(s)

Patent OwnerAddress
VISYX TECHNOLOGIES INC1263 E ARQUES AVENUE SUNNYVALE CA 94085

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chandler,,, JR William H Milpitas, US 1 41
Goslin, Gregory Ray Los Gatos, US 1 41
McNeil, Douglas B Monte Sereno, US 1 41

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