Measuring and testing – Liquid level or depth gauge – Immersible electrode type
Reexamination Certificate
2006-12-04
2009-10-20
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid level or depth gauge
Immersible electrode type
C073S30400R
Reexamination Certificate
active
07603899
ABSTRACT:
The present application discloses a method and apparatus for detecting liquid level with probe, and the method comprising steps of: (A) acquiring a capacitance value of the probe; (B) generating an analog signal corresponding to the acquired capacitance value; (C) converting the generated analog signal into discrete signals at a predetermined sampling interval; (D) increasing or decreasing a counting value according to an amplitude of each the discrete signals, and outputting a liquid level contacting indication signal when the counting value reaches a predetermined counting threshold; and (E) controlling a movement of the probe according to the output liquid level contacting indication signal.
REFERENCES:
patent: 5049826 (1991-09-01), Sasao
patent: 5415051 (1995-05-01), Rokugawa et al.
patent: 5866426 (1999-02-01), Ball
patent: 6107810 (2000-08-01), Ishizawa et al.
patent: 6148666 (2000-11-01), Roesicke
patent: 7191647 (2007-03-01), Harazin et al.
patent: 02250812.0 (2003-11-01), None
patent: 2588334 (2003-11-01), None
patent: 2001004642 (2001-01-01), None
patent: 2001108505 (2001-04-01), None
patent: 2001108506 (2001-04-01), None
patent: 2003057096 (2003-02-01), None
patent: 2003090754 (2003-03-01), None
patent: 2004297982 (2004-10-01), None
SIPO Search Report for corresponding Chinese application, 2 pages, dated Sep. 20, 2006.
English translation of abstract for Japanese Patent Application No. 2003090754 (reference above).
English translation of abstract for Japanese Patent Publication No. 2003057096 (reference above).
English translation of abstract for Japanese Patent Publication No. 2001108505 (reference above).
English translation of abstract for Japanese Patent Publication No. 2001004642 (reference above).
English translation of abstract for Chinese Patent No. 2588334 (reference above).
Li Wei
Liu Qilin
Zhu Xingcal
Shabman Mark
Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
Vista IP Law Group LLP.
Williams Hezron
LandOfFree
Apparatus and method for detecting liquid level with a probe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for detecting liquid level with a probe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for detecting liquid level with a probe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4071424