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Class Information
Number: 73/313
Name: Measuring and testing > Liquid level or depth gauge > Float > With electrically controlled indicator
Description: Gauges having an indicator which is operated by the float through the medium of electrical means.










Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8689627 Low liquid level detecting device and method Apr. 8, 2014
8567244 Liquid level transducer with isolated sensors Oct. 29, 2013
8549911 Multi-level liquid level magnetic sensor Oct. 8, 2013
8539829 Magnetostrictive probe fuel quality sensor retrofit assembly Sep. 24, 2013
8448750 Lubrication system level control May. 28, 2013
8443664 Equalizing container for a hydraulic motor vehicle brake system May. 21, 2013
8438920 Assembly structure of liquid level detecting apparatus and liquid level detecting apparatus May. 14, 2013
8402822 Process tanks in combination with a float magnetostrictive level detector Mar. 26, 2013
8291946 Apparatus for sensing fuel level in fuel tank Oct. 23, 2012
8261612 Accumulator with both direct and remote quantity level indication Sep. 11, 2012
8261613 Fuel sender with reed switch and latching magnets Sep. 11, 2012
8249829 Online condition-based monitoring for tank farms Aug. 21, 2012
8220482 Devices, methods, and algorithms for rapid measurement of mean surface level change of liquids in containers Jul. 17, 2012
8181517 Sender card contamination reduction due to current application to sender card May. 22, 2012
8181518 Float for liquid level indicator May. 22, 2012
8171787 Liquid-level detecting apparatus May. 8, 2012
8171786 Fuel inventory monitoring system May. 8, 2012
8082785 Inductive liquid-level sensor Dec. 27, 2011
8028575 Liquid level detecting device Oct. 4, 2011
8024969 Liquid level detection device Sep. 27, 2011
8015871 Sender unit for sensing the level of remaining fuel in a fuel tank utilizing a non-contacting sensor Sep. 13, 2011
7966879 Fluid storage and dispensing system including dynamic fluid monitoring of fluid storage and dispensing vessel Jun. 28, 2011
7905145 Capacitive gauge for fuel tank Mar. 15, 2011
7845224 Liquid level sensor and liquid level estimation method Dec. 7, 2010
7793539 Electrostatic charge control for in-tank fuel module components Sep. 14, 2010
7784342 Multi-slope variable resistance fuel sender unit Aug. 31, 2010
7748269 Low liquid level detecting device and method Jul. 6, 2010
7725273 Apparatus for monitoring height of liquid in storage tank May. 25, 2010
7721602 Filling level sensor May. 25, 2010
7703322 Liquid level detecting device and method of manufacturing same Apr. 27, 2010
7688193 Oil level detection device for internal combustion engine Mar. 30, 2010
7681447 Liquid level detection apparatus Mar. 23, 2010
7677098 Light sensing contactless fuel level sensor Mar. 16, 2010
7632385 Reference electrode for potentiometric measurements, and method of monitoring the reference electrode Dec. 15, 2009
7621182 Sealed fuel level detector Nov. 24, 2009
7617725 Electric generator protection system Nov. 17, 2009
7610806 Electronic level gage assembly Nov. 3, 2009
7591178 Grounded wiper assembly for fuel sensor Sep. 22, 2009
7565837 Fuel level sensor variable resistor assembly Jul. 28, 2009
7562571 Device and method for detecting material by means of gravitational field analysis Jul. 21, 2009
7549333 Fluid level sender assembly and method of making a fluid level sender assembly Jun. 23, 2009
7536989 Fuel tank cover body May. 26, 2009
7484409 Fluid level switch Feb. 3, 2009
7467550 Fuel tank float arm assembly Dec. 23, 2008
7467549 Electrostatic charge control for in-tank fuel module components Dec. 23, 2008
7463021 Magnetostrictive sensitive element Dec. 9, 2008
7454969 Fuel density measuring device, system, and method using magnetostrictive probe bouyancy Nov. 25, 2008
7437929 Liquid level detector Oct. 21, 2008
7423541 Excessive product usage detection using a level monitoring system Sep. 9, 2008
7418861 Mechanically self actuated liquid level sensor Sep. 2, 2008

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