Measuring and testing – Gas content of a liquid or a solid – By vibration
Reexamination Certificate
2007-02-06
2010-02-16
Williams, Herzon (Department: 2856)
Measuring and testing
Gas content of a liquid or a solid
By vibration
C073S061750, C073S597000, C073S598000
Reexamination Certificate
active
07661293
ABSTRACT:
A system using ultrasonic energy for detecting and quantifying air bubbles and/or particles in a liquid flowing in a tube by a non-invasive and non-destructive technique has an ultrasonic sensor having piezoelectric transmitter and receiver elements placed opposing on the outside of the tube wall and energy in the ultrasonic frequency range is transmitted from the transmitter element to the receiver element. The received ultrasonic energy is amplified and detected and preferably split into a steady state (DC) component and a varying or transient (AC) component respectively indicative of the absence and the presence of an air bubble or a particle in the liquid. The two components of the signal are applied to an A/D converter whose output is supplied to a microprocessor which uses the digital data that corresponds to the presence of the varying transient component to indicate the presence of an air bubble and/or a particle and to measure its characteristics. The presence of the steady-state component indicates that the system is operating properly to providing a continuous self check against any system malfunction.
REFERENCES:
patent: 3921622 (1975-11-01), Cole
patent: 4068521 (1978-01-01), Cosentino et al.
patent: 4341116 (1982-07-01), Bilstad et al.
patent: 4730493 (1988-03-01), Lebaud et al.
patent: 5392638 (1995-02-01), Kawahara
patent: 5394732 (1995-03-01), Johnson et al.
patent: 6142008 (2000-11-01), Cole et al.
patent: 6515487 (2003-02-01), Dawson et al.
patent: 6622542 (2003-09-01), Derek et al.
patent: 6796195 (2004-09-01), Povey et al.
patent: 7047809 (2006-05-01), Cobb
patent: 2009/0078047 (2009-03-01), Dam
patent: 446605 (1991-09-01), None
patent: 04158258 (1992-06-01), None
patent: 09178712 (1997-07-01), None
patent: 2002-333434 (2002-11-01), None
patent: 2003-043017 (2003-02-01), None
patent: 10-2003-0035584 (2003-05-01), None
patent: WO 01/92867 (2001-12-01), None
Coplein Gordon D.
Cosense Inc.
Fresenius Medical Care Holdings, Inc.
Miller Rose M
Williams Herzon
LandOfFree
Ultrasonic system for detecting and quantifying of air... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic system for detecting and quantifying of air..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic system for detecting and quantifying of air... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4152894