Title:
ULTRASONIC LEVEL SENSOR FOR AERATED FLUIDS
Document Type and Number:
WIPO Patent Application WO/2012/067748
Kind Code:
A3
Abstract:
An ultrasonic sensor for detecting the presence or absence of an aerated fluid includes a probe having a first solid portion and a second hollow portion. The probe has a closed end at the hollow portion. The solid portion and the hollow portion define an interface therebetween. A transducer element is mounted to the probe at about the solid portion. The transducer element is configured to transmit an ultrasonic signal through the solid portion into the hollow portion and to receive reflections of the ultrasonic signal to determine the presence or absence of a fluid and/or an aerated fluid.
Inventors:
KNOWLES TERENCE J (US)
TRUESDALE BRIAN J (US)
ALBRECHT KENNETH A (US)
BREMIGAN CHARLES F III (US)
TRUESDALE BRIAN J (US)
ALBRECHT KENNETH A (US)
BREMIGAN CHARLES F III (US)
Application Number:
PCT/US2011/057094
Publication Date:
August 16, 2012
Filing Date:
October 20, 2011
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
KNOWLES TERENCE J (US)
TRUESDALE BRIAN J (US)
ALBRECHT KENNETH A (US)
BREMIGAN CHARLES F III (US)
KNOWLES TERENCE J (US)
TRUESDALE BRIAN J (US)
ALBRECHT KENNETH A (US)
BREMIGAN CHARLES F III (US)
International Classes:
G01F23/296
Domestic Patent References:
| WO2010016997A1 | 2010-02-11 | |||
| WO2008089209A2 | 2008-07-24 |
Foreign References:
| EP0940658A1 | 1999-09-08 | |||
| US20070186646A1 | 2007-08-16 | |||
| US4499765A | 1985-02-19 | |||
| DE102008003283A1 | 2009-07-09 |
Attorney, Agent or Firm:
HAUPTMAN, Benjamin, J. (Suite 300Alexandria, Virginia, US)
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