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Class Information
Number: 181/124
Name: Acoustics > Echo system > Altitude or depth detection
Description: Subject matter for determining the vertical distance of a body above the surface of the earth or the vertical distance down from a surface.










Patents under this class:

Patent Number Title Of Patent Date Issued
8220584 Hybrid level measurement system Jul. 17, 2012
7865317 System and method for measuring a fuel level in a vehicle fuel tank Jan. 4, 2011
7562740 Borehole acoustic source Jul. 21, 2009
7441628 Wellbore signal generator Oct. 28, 2008
7213456 Device for measuring the level of a fluid in a fuel tank of a motor vehicle May. 8, 2007
6982929 Height measurement method and apparatus Jan. 3, 2006
6934657 Method, system, and device for graphically presenting water temperature data Aug. 23, 2005
6595315 Underwater detecting apparatus, depth measuring apparatus and display apparatus Jul. 22, 2003
6588269 Piezoelectric device for measuring liquid level Jul. 8, 2003
6505509 Apparatus and method for measuring the level of a fluid Jan. 14, 2003
6427532 Device for measuring a fill level of a liquid in a container Aug. 6, 2002
6360599 Device for measuring liquid level preferably measuring tide level in sea Mar. 26, 2002
6345683 System and method for an improved device for measuring water levels Feb. 12, 2002
5778726 Device for monitoring a predetermined level of a liquid in a container Jul. 14, 1998
5507178 Liquid presence and identification sensor Apr. 16, 1996
5363341 Level measuring device which can be assembled from components Nov. 8, 1994
5357801 Liquid-level gauging Oct. 25, 1994
5319974 Ultrasonic level measuring system Jun. 14, 1994
5319973 Ultrasonic fuel level sensing device Jun. 14, 1994
5309763 Liquid-level gauging May. 10, 1994
5263371 Methods for temperature-compensated liquid height and leak detection measurements using quasi-static reference subsystem Nov. 23, 1993
5226320 Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide Jul. 13, 1993
5131271 Ultrasonic level detector Jul. 21, 1992
5127266 Methods for liquid measurement using quasi-static reference subsystem Jul. 7, 1992
5121340 Multi-level probe and system for measurement of physical conditions in liquid-containing tanks Jun. 9, 1992
5119676 Ultrasonic method and apparatus for determining water level in a closed vessel Jun. 9, 1992
5088068 Hand-held underwater distance measurement device Feb. 11, 1992
5076101 Liquid level measurement system for tanks Dec. 31, 1991
5036703 Method and apparatus for testing liquid fillings in tanks Aug. 6, 1991
5033031 Underground ultrasonic tillage depth sensor Jul. 16, 1991
4918671 Depth sounder operation for hostile environments Apr. 17, 1990
4916674 Method and apparatus for improving the shallow water performance of a depth sounder Apr. 10, 1990
4873676 Sonar depth sounder apparatus Oct. 10, 1989
4837750 Apparatus for displaying depth sounding data with nautical range Jun. 6, 1989
4829493 Sonar fish and bottom finder and display May. 9, 1989
4829492 Depthfinder with color LCD display May. 9, 1989
4780861 Automatic control system for filling beverage containers Oct. 25, 1988
4775028 Method and system for depth sounding Oct. 4, 1988
4765186 Liquid level detector by guided elastic waves Aug. 23, 1988
4637463 Echo ranging gun Jan. 20, 1987
4408676 Gas gun assembly Oct. 11, 1983
4153357 Underwater camera May. 8, 1979











 
 
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