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Class Information
Number: 137/558
Name: Fluid handling > With indicator, register, recorder, alarm or inspection means > Liquid level responsive indicator, recorder or alarm
Description: Apparatus provided with a visual indicator, audible alarm or recorder which is responsive to the level of the liquid in some part of the apparatus.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8711002 Monitoring of undesirable fluid ingress into subsea control modules Apr. 29, 2014
8701705 Fuel delivery module Apr. 22, 2014
8659438 Apparatus and method for monitoring heated liquid baths Feb. 25, 2014
8643497 Integral fluid detection and containment apparatus Feb. 4, 2014
8636023 Automatic air vent for fire suppression wet pipe system and method of venting a fire suppression wet pipe system Jan. 28, 2014
8636028 Refillable propane cylinder and valve assembly therefore Jan. 28, 2014
8622084 Liquid-suctioning tank and droplet discharge device provided with the same Jan. 7, 2014
8584705 Bidirectional sleeved/plug ball check valve Nov. 19, 2013
8566989 Controlling method of clothes treating apparatus Oct. 29, 2013
8550111 Mechanism for controlling a gauge for indicating the amount of gas remaining in a gas tank Oct. 8, 2013
8511341 Marine fuel backflow preventer and over-fill alarm system Aug. 20, 2013
8511343 Bladderless reservoir tank for a hydraulic accumulator Aug. 20, 2013
8470137 Recycler assembly Jun. 25, 2013
8459300 Arrangement for feeding a liquid additive for an internal-combustion engine Jun. 11, 2013
8448665 Fuel overflow alarm system May. 28, 2013
8442783 Method of and apparatus for recording fuel supplied to a vehicle May. 14, 2013
8439062 Flood preventing system, and method of use May. 14, 2013
8439065 Automotive air bleed valve for a closed hydraulic system May. 14, 2013
8430115 Leak detection system for humidifier Apr. 30, 2013
8425767 Device for connecting to a liquid source Apr. 23, 2013
8427336 Monitoring of undesirable fluid ingress into subsea control modules Apr. 23, 2013
8397491 Device for introducing a liquid reducing agent into an exhaust gas of a combustion system Mar. 19, 2013
8297308 Cartridge Oct. 30, 2012
8256455 Alarm and method Sep. 4, 2012
8231192 Liquid detection unit, and liquid container using liquid detection unit Jul. 31, 2012
8201577 Feeding arrangement for a liquid additive for an internal-combustion-engine Jun. 19, 2012
8197012 Device for supplying a hydraulic brake circuit comprising a particle filter Jun. 12, 2012
8066029 Persuasive environmental recovery system Nov. 29, 2011
8042567 Gas meter of gas canister valve Oct. 25, 2011
8032256 Liquid level control systems Oct. 4, 2011
8013749 Fluid detection and containment apparatus Sep. 6, 2011
7992721 Method and apparatus for confirming that a filter drier has been replaced Aug. 9, 2011
7921873 Service valve assembly having a stop-fill device and a liquid level indicating dial Apr. 12, 2011
7907059 Sewage pipe alarm system and associated method Mar. 15, 2011
7900647 Water leak detection and prevention systems and methods Mar. 8, 2011
7802587 Float valve and method Sep. 28, 2010
7753071 Leak detector pad Jul. 13, 2010
7740027 Refrigeration condensate tray treatment apparatus Jun. 22, 2010
7730903 Non-metallic auxiliary tank system for a vehicle Jun. 8, 2010
7726334 Service valve assembly having a stop-fill device and remote liquid level indicator Jun. 1, 2010
7686034 Air conditioning condensate treatment apparatus Mar. 30, 2010
7644727 Hydraulic fluid reservoir and hydraulic system Jan. 12, 2010
7631658 Water supply system Dec. 15, 2009
7624756 Refrigeration condensate line assembly Dec. 1, 2009
7610927 Apparatus, system and method for monitoring fluid flows and/or filter conditions and/or distributing a single fluid Nov. 3, 2009
7604017 Water ingress detection system Oct. 20, 2009
7583198 Method and apparatus for detecting water leaks Sep. 1, 2009
7575015 Secondarily contained in-dispenser sump/pan system and method for capturing and monitoring leaks Aug. 18, 2009
7575022 Diverter, liquid-level indicator and chemical pre-treatment and post-treatment implementations useful in waterless urinals Aug. 18, 2009
7549435 Systems and methods for detecting and correcting a leak Jun. 23, 2009

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