Measuring and testing – Liquid level or depth gauge – Float
Reexamination Certificate
2007-04-11
2009-11-03
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Float
C073S29000R, C073S305000
Reexamination Certificate
active
07610806
ABSTRACT:
A thermowell extends downwardly into tank liquids from the roof of the tank. A magnetostrictive wave guide probe is positioned on the inside of the thermowell and a magnetic float is slidably positioned on the outside of the thermowell. The probe is connected to a head unit containing the necessary electronics for operability which is positioned outside of the tank. The position of the float, and thus the liquid level, is remotely sensed by the probe, and the probe can be removed from the thermowell if necessary without breaking the seal of the tank.
REFERENCES:
patent: 4284904 (1981-08-01), Tetro
patent: 4475290 (1984-10-01), Colditz
patent: 5196791 (1993-03-01), Dumais
patent: 5412316 (1995-05-01), Dumais et al.
patent: 5473245 (1995-12-01), Silvus, Jr. et al.
patent: 5848549 (1998-12-01), Nyce et al.
patent: 5986449 (1999-11-01), Koski
patent: 5998991 (1999-12-01), Begin
patent: 6018247 (2000-01-01), Kelly
patent: 6253611 (2001-07-01), Varga et al.
patent: 6289728 (2001-09-01), Wilkins
patent: 6356071 (2002-03-01), Koski et al.
patent: 6418787 (2002-07-01), Eck
patent: 6508118 (2003-01-01), Eck
patent: 6802218 (2004-10-01), Patel
patent: 6813946 (2004-11-01), Benton
patent: 6923057 (2005-08-01), Sabatino
patent: 2005/0241391 (2005-11-01), Kull
TEMPERATURES.COM; “About Thermowells”; http:www.temperatures.com/twells.html; Apr. 9, 2007.
Babbitt; “LTM-300”; http://www.iprocessmart.com/Babbitt/ll—ltm100.htm; Nov. 10, 2005.
Babbitt International; “High Resolution Magnetostrictive Level Transmitters”; http://www.babbittlevel.com/ltm100htm; Nov. 10, 2005.
GLOBALSPEC.COM; “K-TEC AT100/200 Magnetostrictive Level Transmitter”; http://www.globalspec.com/FeaturedProducts/Detail/KTEK/AT100200—Magnetostrictive—Level—Trans.; Nov. 10, 2005.
Casperson John R
Jogler, Inc.
Shabman Mark
Williams Hezron
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