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Class Information
Number: 73/319
Name: Measuring and testing > Liquid level or depth gauge > Float > Vertically reciprocable
Description: Gauges wherein the float reciprocates vertically or substantially vertically in following the liquid level.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7610807 |
Level gage |
Nov. 3, 2009 |
| 7596999 |
Sediment monitor for a stormwater receiving system |
Oct. 6, 2009 |
| 7484409 |
Fluid level switch |
Feb. 3, 2009 |
| 7398682 |
Low fluid level detector system |
Jul. 15, 2008 |
| 7399985 |
Optical non-contact sensor for detecting material level in a container |
Jul. 15, 2008 |
| 7353704 |
Storage tank external gauge system |
Apr. 8, 2008 |
| 7343800 |
Linear position indicator system and method |
Mar. 18, 2008 |
| 7334536 |
Pop-up sewer backup indicator |
Feb. 26, 2008 |
| 7315250 |
Electrical fluid activated switch |
Jan. 1, 2008 |
| 7284422 |
Fluid level measurement device |
Oct. 23, 2007 |
| 7278311 |
Liquid level and density measurement device |
Oct. 9, 2007 |
| 7265677 |
External device indicating that a tank is filled up |
Sep. 4, 2007 |
| 7259384 |
Fluid level optical detector with float having opaque and transmissive portions |
Aug. 21, 2007 |
| 7082828 |
Laser measurement of liquid level in a holder |
Aug. 1, 2006 |
| 7082827 |
Leak detector |
Aug. 1, 2006 |
| 7066024 |
Float adapted to track an interface between two liquids of differing density |
Jun. 27, 2006 |
| 7062967 |
Fuel level sensor |
Jun. 20, 2006 |
| 7055386 |
Fluid level indicator dial assembly with magnetic calibration feature |
Jun. 6, 2006 |
| 7021139 |
Non-contact type liquid level sensor |
Apr. 4, 2006 |
| 7009125 |
Electrical fluid activated switch |
Mar. 7, 2006 |
| 6998552 |
Float-type liquid level switch assembly with light emitting elements |
Feb. 14, 2006 |
| 6988406 |
System and method of liquid level detection |
Jan. 24, 2006 |
| 6983655 |
Vehicle cesspool lever sensor |
Jan. 10, 2006 |
| 6915692 |
Level-sensor device for a liquid-fuel tank, particularly for a system for supplying LPG to an internal-combustion engine |
Jul. 12, 2005 |
| 6817242 |
Concrete level indicator |
Nov. 16, 2004 |
| 6813946 |
Liquid sensing |
Nov. 9, 2004 |
| 6766688 |
Tank volatile liquid level or volume gauge |
Jul. 27, 2004 |
| 6588272 |
Redundant level measuring system |
Jul. 8, 2003 |
| 6571627 |
Slide detector |
Jun. 3, 2003 |
| 6536277 |
Level-tracing water-monitoring apparatus |
Mar. 25, 2003 |
| 6532813 |
Method and device for determining a fill level of liquid in a container |
Mar. 18, 2003 |
| 6523404 |
Apparatus for measuring a fluid level |
Feb. 25, 2003 |
| 6457356 |
Piston pump elevator having fluid level measurement capabilty |
Oct. 1, 2002 |
| 6435026 |
Liquid level indicator |
Aug. 20, 2002 |
| 6418788 |
Digital electronic liquid density/liquid level meter |
Jul. 16, 2002 |
| 6375835 |
Oil recovery system |
Apr. 23, 2002 |
| 6367325 |
Motor vehicle fuel level sensor |
Apr. 9, 2002 |
| 6363785 |
Relative location detection sensor |
Apr. 2, 2002 |
| 6289728 |
Apparatus and method for determining the amount of liquid contained in a storage tank |
Sep. 18, 2001 |
| 6289731 |
Liquid level detector |
Sep. 18, 2001 |
| 6273021 |
Oil spill prevention apparatus |
Aug. 14, 2001 |
| 6269695 |
Analog liquid level sensor |
Aug. 7, 2001 |
| 6253611 |
Magnetic float type liquid level gauges |
Jul. 3, 2001 |
| 6230561 |
Float for a level sensor |
May. 15, 2001 |
| 6199428 |
Fluid level measuring device |
Mar. 13, 2001 |
| 6170328 |
Lever gauge with hinged arms |
Jan. 9, 2001 |
| 6138509 |
Water level monitoring float system |
Oct. 31, 2000 |
| 6048487 |
Recoating stereolithographic layers |
Apr. 11, 2000 |
| 6041966 |
Enclosure for a bottom draining container |
Mar. 28, 2000 |
| 5999101 |
Liquid level alarm system |
Dec. 7, 1999 |
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