METHOD FOR TREATING AND SEALING PIEZOELECTRIC TUNING FORKS

Title:

METHOD FOR TREATING AND SEALING PIEZOELECTRIC TUNING FORKS

Document Type and Number:

WIPO Patent Application WO/2011/156469

Kind Code:

A3

Abstract:

Disclosed is an apparatus for estimating a property of a fluid. The apparatus includes: a piezoelectric resonator configured to be disposed in the fluid; an electrode embedded in the piezoelectric resonator and included in a resonator circuit configured to output an electrical signal related to the property; a discontinuity defined by a surface of the piezoelectric resonator, the discontinuity altering an impedance of the resonator circuit if a high-dielectric fluid or a conductive fluid is disposed in the discontinuity; and an insulating material disposed in the discontinuity.

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Inventors:

DIFOGGIO ROCCO (US)
LIU YI (US)
PEREZ LOUIS (US)
BERGREN PAUL (US)
SANDERLIN KERRY L (US)

Application Number:

PCT/US2011/039597

Publication Date:

April 19, 2012

Filing Date:

June 08, 2011

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
DIFOGGIO ROCCO (US)
LIU YI (US)
PEREZ LOUIS (US)
BERGREN PAUL (US)
SANDERLIN KERRY L (US)

International Classes:

G01V3/18; E21B47/00; G01N27/06; G01N33/18; H01L41/22

Foreign References:

US20070175632A1	2007-08-02
US20090133470A1	2009-05-28
US20060082261A1	2006-04-20
US6332567B1	2001-12-25

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