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Class Information
Number: 137/386
Name: Fluid handling > Liquid level responsive or maintaining systems
Description: Apparatus which includes an element which senses the level of a liquid in means to receive an accumulation thereof and in response thereto exercises a control of the flow of fluid or acts to maintain that level of the liquid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7591277 |
Fuel balancing system |
Sep. 22, 2009 |
| 7451789 |
Tank car loading control and monitoring system and method |
Nov. 18, 2008 |
| 7258130 |
Integrated jet fluid level shutoff sensor and fuel tank vent for vehicles |
Aug. 21, 2007 |
| 7189365 |
Liquid treating equipment including a storage vessel and a discharge vessel |
Mar. 13, 2007 |
| 7129832 |
High/low level alarm controller |
Oct. 31, 2006 |
| 7042362 |
Apparatus for monitoring leakage of process cooling water in furnace |
May. 9, 2006 |
| 7004185 |
Liquid loading techniques |
Feb. 28, 2006 |
| 6964278 |
Non-invasive gauge glass liquid level sensor apparatus |
Nov. 15, 2005 |
| 6938633 |
Method and apparatus for supplying process liquid for machine tool |
Sep. 6, 2005 |
| 6932097 |
Acoustic control of the composition and/or volume of fluid in a reservoir |
Aug. 23, 2005 |
| 6910498 |
Liquid level controller |
Jun. 28, 2005 |
| 6868861 |
Level control system for sheet casting process |
Mar. 22, 2005 |
| 6837263 |
Liquid level control system |
Jan. 4, 2005 |
| 6837262 |
Non tank pressurizing fast fill receiver and system for vehicles |
Jan. 4, 2005 |
| 6799471 |
System and method for conditioning and detection of moisture damage in asphalt mixes |
Oct. 5, 2004 |
| 6684902 |
Dual sensor liquid accumulator |
Feb. 3, 2004 |
| 6591862 |
System and method for carrying out column tests under hydrostatic pressure |
Jul. 15, 2003 |
| 6311711 |
Method of regulating the level in a buffer tank |
Nov. 6, 2001 |
| 6305404 |
Device for regulating the contents of a container |
Oct. 23, 2001 |
| 6303005 |
Process and device for producing high-purity liquid chemicals |
Oct. 16, 2001 |
| 6208943 |
Fluid flow measurement correcting system and methods of constructing and utilizing same |
Mar. 27, 2001 |
| 6155107 |
Engine oil level detector for a vehicle |
Dec. 5, 2000 |
| 6123765 |
Continuously fed single bubbler for epitaxial deposition of silicon |
Sep. 26, 2000 |
| 6085652 |
Ink fountain with a fountain roller in the inking mechanism of printing presses |
Jul. 11, 2000 |
| 6026843 |
Valve box manifold system and distribution method |
Feb. 22, 2000 |
| 6019114 |
Self-metering reservoir |
Feb. 1, 2000 |
| 5992447 |
Device for filling vinyl lined pools |
Nov. 30, 1999 |
| 5966311 |
Method of overfill probe identification and control |
Oct. 12, 1999 |
| 5921428 |
Self-metering reservoir |
Jul. 13, 1999 |
| 5904169 |
Apparatus for and method of treating substrate |
May. 18, 1999 |
| 5881753 |
Passive fluid level controller |
Mar. 16, 1999 |
| 5671773 |
Automatic fluid-supply apparatus for a boiler system |
Sep. 30, 1997 |
| 5578994 |
Liquid level switch |
Nov. 26, 1996 |
| 5575303 |
Process for controlling a series of flotation cells |
Nov. 19, 1996 |
| 5553794 |
Sewage handling system |
Sep. 10, 1996 |
| 5541575 |
Leakage detection system |
Jul. 30, 1996 |
| 5519638 |
Automatic system for monitoring and replenishing hazardous liquids in tanks |
May. 21, 1996 |
| 5506564 |
Marine craft fuel alert system |
Apr. 9, 1996 |
| 5349994 |
Control system for filling tanks with liquids |
Sep. 27, 1994 |
| 5285812 |
Jet level sensor for fuel tanks |
Feb. 15, 1994 |
| 5239285 |
Low salt level sensor |
Aug. 24, 1993 |
| 5160216 |
Drainage distribution amount determining method and drainage system |
Nov. 3, 1992 |
| 5129413 |
Self washing storage tank |
Jul. 14, 1992 |
| 5128652 |
Fluid detection system with selectable relay release |
Jul. 7, 1992 |
| 5121768 |
Moisture sensing valve |
Jun. 16, 1992 |
| 5092707 |
Crest gate operating system |
Mar. 3, 1992 |
| 5048557 |
Main valve and seat for use in filling containers to a predetermined level |
Sep. 17, 1991 |
| 5047129 |
Unit for the treatment of electrophoretic strips |
Sep. 10, 1991 |
| 5039405 |
Disconnector for the protection of the watermain, with particular reference to medical plants |
Aug. 13, 1991 |
| 5038840 |
Bubbler container automatic refill system |
Aug. 13, 1991 |
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