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Class Information
Number: 137/551
Name: Fluid handling > With indicator, register, recorder, alarm or inspection means
Description: Apparatus comprising fluid handling means combined (1) with an indicator, register, recorder, or alarm responsive to a condition or position of a part of the apparatus or of the fluid in the apparatus or (2) with means which permits inspection of normally hidden parts of the apparatus or of the fluid inside the apparatus.










Sub-classes under this class:

Class Number Class Name Patents
137/557 Fluid pressure responsive indicator, recorder or alarm 628
137/559 Inspection means 247
137/558 Liquid level responsive indicator, recorder or alarm 240
137/552 Plural 149
137/553 Position or extent of motion indicator 146
137/552.7 Time 31


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8701603 Control valve unit for a liquid circuit Apr. 22, 2014
8662107 Switch device for water conduit valve Mar. 4, 2014
8656950 Drag reduction of asphaltenic crude oils Feb. 25, 2014
8659438 Apparatus and method for monitoring heated liquid baths Feb. 25, 2014
8622058 Medical air tubing connection system Jan. 7, 2014
8616236 Drag reduction of asphaltenic crude oils Dec. 31, 2013
8600932 Telematic asset microfluidic analysis Dec. 3, 2013
8573251 Flow rate control valve Nov. 5, 2013
8566989 Controlling method of clothes treating apparatus Oct. 29, 2013
8562306 Compressor apparatus Oct. 22, 2013
8561839 Machine for making and dispensing iced food products Oct. 22, 2013
8555917 Power line data acquisition Oct. 15, 2013
8544819 Distribution valve with integrated flow metering unit Oct. 1, 2013
8530242 Wafer process chamber leak detector Sep. 10, 2013
8496225 Valve device Jul. 30, 2013
8490575 Valve Jul. 23, 2013
8490649 Torque indicator Jul. 23, 2013
8480883 Pipe coupling with integrated filter and flow detector Jul. 9, 2013
8479765 Water faucet assembly Jul. 9, 2013
8475550 Self-optimizing odorant injection system Jul. 2, 2013
8474474 Control valve having pressure boundary integrity diagnostic capabilities, method of making the control valve, and method of using the control valve Jul. 2, 2013
8464837 Device and method for controlling supply of lubricant at a work vehicle Jun. 18, 2013
8456312 Domestic water leak and humidity detection and control apparatus with water valve control Jun. 4, 2013
8453674 Valve fault indication and control Jun. 4, 2013
8448664 Fluid control device with fluid temperature display May. 28, 2013
8365765 Flow restrictor cartridge for fluid flow measurements Feb. 5, 2013
8349038 Self optimizing odorant injection system Jan. 8, 2013
8316883 Water faucet temperature gauge and display Nov. 27, 2012
8261772 Manifold with label plates Sep. 11, 2012
8256455 Alarm and method Sep. 4, 2012
8239651 Portable storage device and method for indicating storage capacity Aug. 7, 2012
8220484 Monitoring systems and methods for sewer and other conduit systems Jul. 17, 2012
8165830 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter Apr. 24, 2012
8072343 Local emergency isolation valve controller with diagnostic testing and trouble indicator Dec. 6, 2011
8043556 Ablutionary installations Oct. 25, 2011
8042567 Gas meter of gas canister valve Oct. 25, 2011
7975718 In-situ monitor of injection valve Jul. 12, 2011
7944363 Apparatus and method of sensing leakage of chemical liquid May. 17, 2011
7912675 Method and apparatus for analyzing steam trap data Mar. 22, 2011
7906232 Fuel cell casing with depressurizing cover Mar. 15, 2011
7900650 In-line water shut-off system and method of use thereof Mar. 8, 2011
7896020 Process for reducing the restart pressure of streams Mar. 1, 2011
7828011 Pneumatic safety valve Nov. 9, 2010
7828012 Port integrated within valve stem Nov. 9, 2010
7823601 Drain trap Nov. 2, 2010
7806132 Method and device for tapping a pipeline Oct. 5, 2010
7798168 Pressure-based gas delivery system and method for reducing risks associated with storage and delivery of high pressure gases Sep. 21, 2010
7792659 Device and a method for measurement of energy for heating tap water separated from the buildings heating energy-usage Sep. 7, 2010
7768414 Medical gas alarm system Aug. 3, 2010
7762313 Coolant sensor and bleed valve Jul. 27, 2010

1 2 3 4 5 6










 
 
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