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Class Information
Number: 340/624
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Fluent material > Material level > Liquid > Float sensor > Vertically reciprocable
Description: Subject matter wherein the float has no horizontal component of motion.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7574912 |
Collapsible liquid level measurement device with attachment |
Aug. 18, 2009 |
| 7561040 |
Wireless probe system and method for a fueling environment |
Jul. 14, 2009 |
| 7508312 |
Apparatus and method for determining a fluid level within an enclosed container |
Mar. 24, 2009 |
| 7418861 |
Mechanically self actuated liquid level sensor |
Sep. 2, 2008 |
| 7417552 |
Flood alarm |
Aug. 26, 2008 |
| 7315250 |
Electrical fluid activated switch |
Jan. 1, 2008 |
| 7265677 |
External device indicating that a tank is filled up |
Sep. 4, 2007 |
| 7116236 |
Oil tank sight glass monitor |
Oct. 3, 2006 |
| 7111510 |
Liquid level detection device |
Sep. 26, 2006 |
| 7068175 |
Water level warning device |
Jun. 27, 2006 |
| 7009125 |
Electrical fluid activated switch |
Mar. 7, 2006 |
| 6972685 |
Liquid level sensor |
Dec. 6, 2005 |
| 6910498 |
Liquid level controller |
Jun. 28, 2005 |
| 6783665 |
Unit for automatically bleeding off the water which separates in a vehicle fuel filter, in particular for diesel engines |
Aug. 31, 2004 |
| 6766688 |
Tank volatile liquid level or volume gauge |
Jul. 27, 2004 |
| 6753785 |
Oil tank sight glass monitor |
Jun. 22, 2004 |
| 6679286 |
Ball tap with a water level switch |
Jan. 20, 2004 |
| 6657545 |
Automatic detecting and prewarning system for medicine instiller |
Dec. 2, 2003 |
| 6640628 |
Level-measuring device |
Nov. 4, 2003 |
| 6557412 |
Non-fouling liquid level control |
May. 6, 2003 |
| 6536277 |
Level-tracing water-monitoring apparatus |
Mar. 25, 2003 |
| 6529134 |
Remote adjustment device and method |
Mar. 4, 2003 |
| 6513378 |
Liquid level float switch with manual reset |
Feb. 4, 2003 |
| 6481278 |
Hall-effect fine resolution liquid level indicator |
Nov. 19, 2002 |
| 6480113 |
Water level alarm |
Nov. 12, 2002 |
| 6429778 |
Water-monitoring apparatus capable of auto-tracing water level and non-contact signal relay for the same |
Aug. 6, 2002 |
| 6375835 |
Oil recovery system |
Apr. 23, 2002 |
| 6370951 |
Method and apparatus for sensing the level of fluid with a container |
Apr. 16, 2002 |
| 6374187 |
Underground storage tank monitoring system and method |
Apr. 16, 2002 |
| 6369715 |
Intrinsically safe sensor and data transmission system |
Apr. 9, 2002 |
| 6236323 |
Visual fluid level indicator using magnetic pins |
May. 22, 2001 |
| 6229448 |
Intrinsically safe fluid tank overfill protection system |
May. 8, 2001 |
| 6218949 |
Liquid level monitoring and control apparatus |
Apr. 17, 2001 |
| 6195012 |
Drip annunciator |
Feb. 27, 2001 |
| 6147614 |
Bathtub water level alarm |
Nov. 14, 2000 |
| 6140925 |
Magnetically actuated float switch |
Oct. 31, 2000 |
| 6057773 |
Unanchored sensor for fluid characteristics |
May. 2, 2000 |
| 6048487 |
Recoating stereolithographic layers |
Apr. 11, 2000 |
| 6041966 |
Enclosure for a bottom draining container |
Mar. 28, 2000 |
| 6028521 |
Liquid level sensor |
Feb. 22, 2000 |
| 6012606 |
Apparatus for detecting low liquid level in bottom-draining container |
Jan. 11, 2000 |
| 5999101 |
Liquid level alarm system |
Dec. 7, 1999 |
| 5953982 |
Device for preventing dry boiling of a pan |
Sep. 21, 1999 |
| 5945913 |
Liquid level alarm system |
Aug. 31, 1999 |
| 5942980 |
Multi-sensor hydrostatic gauge for fuel storage tanks |
Aug. 24, 1999 |
| 5929763 |
Liquid level detection apparatus with flexible outer housing |
Jul. 27, 1999 |
| 5900546 |
Liquid level indicator for storage tank |
May. 4, 1999 |
| 5898376 |
Modular overfill alarm assembly for vented storage tanks |
Apr. 27, 1999 |
| 5891382 |
Recoating of stereolithographic layers |
Apr. 6, 1999 |
| 5880423 |
Water level sensor |
Mar. 9, 1999 |
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