Measuring and testing – Liquid level or depth gauge
Reexamination Certificate
2006-10-10
2006-10-10
Larkin, Daniel S. (Department: 2856)
Measuring and testing
Liquid level or depth gauge
C073S29000R
Reexamination Certificate
active
07117739
ABSTRACT:
An ultrasonic fluid-gauging probe has a still well and two or more piezoelectric transducer elements mounted at its lower end. A drive and processor unit may separately energize each element and provide a separate output indicative of fluid height so as to provide redundancy. Alternatively, one element may be energized and the other used to receive the reflected signal in normal use but, when a fault is detected, one element may be used to both transmit and receive. The elements may be mounted side-by-side, such as on a common substrate, or one above the other in a stack.
REFERENCES:
patent: 2753542 (1956-07-01), Rod et al.
patent: 4427132 (1984-01-01), Thomson
patent: 4572981 (1986-02-01), Zola
patent: 4815323 (1989-03-01), Ellinger et al.
patent: 5095748 (1992-03-01), Gregory et al.
patent: 5264831 (1993-11-01), Pfeiffer
patent: 5586085 (1996-12-01), Lichte
patent: 5793705 (1998-08-01), Gazis et al.
patent: 5856953 (1999-01-01), Durkee
patent: 5877997 (1999-03-01), Fell
patent: 5996407 (1999-12-01), Hewitt
patent: 6598473 (2003-07-01), Atkinson
patent: 6786090 (2004-09-01), Benghezal et al.
patent: 6968738 (2005-11-01), Atkinson
patent: 6993967 (2006-02-01), Forgue
patent: 2 084 322 (1982-04-01), None
patent: 2 362 468 (2001-11-01), None
patent: WO 98/04889 (1998-02-01), None
International Search Report No. GB0500962.6, dated Apr. 28, 2005, 1 page.
Connolly Bove & Lodge & Hutz LLP
Frank Rodney
Larkin Daniel S.
Smiths Group PLC
LandOfFree
Fluid-gauging probes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluid-gauging probes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid-gauging probes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3694124