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Class Information
Number: 73/293
Name: Measuring and testing > Liquid level or depth gauge > With illumination
Description: Liquid level or depth gauges provided with means for illuminating the gauge or its indicating portion.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7581442 |
Optically monitoring fullness of fluid container |
Sep. 1, 2009 |
| 7472593 |
Fluid level regulator |
Jan. 6, 2009 |
| 7401512 |
Solid state illuminator for bi-color ported water level gauges |
Jul. 22, 2008 |
| 7399985 |
Optical non-contact sensor for detecting material level in a container |
Jul. 15, 2008 |
| 7323705 |
Liquid level measurement |
Jan. 29, 2008 |
| 7259384 |
Fluid level optical detector with float having opaque and transmissive portions |
Aug. 21, 2007 |
| 7213457 |
Solid state illuminator for bi-color ported water level gauges |
May. 8, 2007 |
| 7199388 |
Liquid level detecting device |
Apr. 3, 2007 |
| 7197926 |
Solid state illuminator for bi-color ported water level gauges |
Apr. 3, 2007 |
| 7157727 |
Optical detector able to sense the presence of a container and content therein, and container and printer using the same |
Jan. 2, 2007 |
| 7116236 |
Oil tank sight glass monitor |
Oct. 3, 2006 |
| 7109513 |
Use of wicking means to manage fluids on optical level sensing systems |
Sep. 19, 2006 |
| 7079037 |
System and method for indicating liquid level condition |
Jul. 18, 2006 |
| 7047806 |
Liquid level gage and illuminator therefor |
May. 23, 2006 |
| 7049622 |
Optical position sensor for determining the interface between a clear and an opaque fluid |
May. 23, 2006 |
| 7017408 |
Electro-optic liquid level sensing system for aircraft beverage brewing |
Mar. 28, 2006 |
| 6992757 |
Method and system for encoding fluid level |
Jan. 31, 2006 |
| 6968739 |
Gauge and method for indicating a level of a liquid in a tank |
Nov. 29, 2005 |
| 6949758 |
LCC-based fluid-level detection sensor |
Sep. 27, 2005 |
| 6938477 |
Solid state illuminator for bi-colored ported water level gauges |
Sep. 6, 2005 |
| 6925871 |
Level sensors |
Aug. 9, 2005 |
| 6921911 |
Method and device for optically determining a filling level in liquid-filled containers |
Jul. 26, 2005 |
| 6868861 |
Level control system for sheet casting process |
Mar. 22, 2005 |
| 6851312 |
Water-bearing household appliance |
Feb. 8, 2005 |
| 6851581 |
Washing agent dispenser for a household a dishwasher |
Feb. 8, 2005 |
| 6832517 |
Optical level detector |
Dec. 21, 2004 |
| 6753785 |
Oil tank sight glass monitor |
Jun. 22, 2004 |
| 6710718 |
Slim profile indicating instruments |
Mar. 23, 2004 |
| 6703635 |
Method and apparatus for measuring the level of liquid using optical fiber strain gauge |
Mar. 9, 2004 |
| 6696966 |
Automatic salt level monitor for a water softening device |
Feb. 24, 2004 |
| 6670601 |
Fiberoptic fuel gauging system for measuring the level of a liquid in a tank |
Dec. 30, 2003 |
| 6668645 |
Optical fuel level sensor |
Dec. 30, 2003 |
| 6658933 |
Fill-level indicator for a liquefied-petroleum-gas tank |
Dec. 9, 2003 |
| 6612169 |
Apparatus for engine lubricant level detection |
Sep. 2, 2003 |
| 6588270 |
Filling level indicator for a washer fluid container |
Jul. 8, 2003 |
| 6586760 |
Water level measuring method and system |
Jul. 1, 2003 |
| 6578418 |
Sight glass |
Jun. 17, 2003 |
| 6545286 |
Method and apparatus for water level determination |
Apr. 8, 2003 |
| 6538261 |
Wet line fluid removal system with optical sensor |
Mar. 25, 2003 |
| 6513892 |
Printer with an ink container and an ink remainder detector |
Feb. 4, 2003 |
| 6452202 |
Apparatus for measuring level of liquid in tank |
Sep. 17, 2002 |
| 6448574 |
Method and apparatus for determining liquid levels in a liquid sample container |
Sep. 10, 2002 |
| 6443022 |
Fluid level detector and method for use with automated workstation |
Sep. 3, 2002 |
| 6429447 |
Fluid level indicator |
Aug. 6, 2002 |
| 6422073 |
Device for identifying liquid anaesthetics |
Jul. 23, 2002 |
| 6407803 |
Laser measuring device |
Jun. 18, 2002 |
| 6389239 |
Liquid detection device, fusing unit using the same, and electrophotographic apparatus |
May. 14, 2002 |
| 6363784 |
Fluid detector |
Apr. 2, 2002 |
| 6339468 |
Remote sensor head for laser level measurement devices |
Jan. 15, 2002 |
| 6293143 |
Ink level sensing device and method therefor |
Sep. 25, 2001 |
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