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Class Information
Number: 137/559
Name: Fluid handling > With indicator, register, recorder, alarm or inspection means > Inspection means
Description: Apparatus which provides means which permit or facilitate observation or inspection of the fluid inside the apparatus or of normally invisible parts of the apparatus.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8701693 Nozzle check valve Apr. 22, 2014
8671971 Systems and methods for providing a monitoring and deactivation apparatus for a beverage distribution system Mar. 18, 2014
8636023 Automatic air vent for fire suppression wet pipe system and method of venting a fire suppression wet pipe system Jan. 28, 2014
8622078 Apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms Jan. 7, 2014
8622058 Medical air tubing connection system Jan. 7, 2014
8616074 In-line piggable wye fitting, apparatus and method Dec. 31, 2013
8566989 Controlling method of clothes treating apparatus Oct. 29, 2013
8528594 Hydraulic system with leakage fluid removal Sep. 10, 2013
8506761 Recycler module for a recycler assembly Aug. 13, 2013
8470136 Parts washer with recycler assembly Jun. 25, 2013
8470137 Recycler assembly Jun. 25, 2013
8464744 Water sensor with activation mechanism Jun. 18, 2013
8418718 Double walled tanks with internal containment chambers Apr. 16, 2013
8381583 Method for determining a functioning of a gas bleed valve Feb. 26, 2013
8365766 Observation valve structure Feb. 5, 2013
8365767 User interface for a faucet Feb. 5, 2013
8360276 Manual inflator with cylinder connector and status indicator Jan. 29, 2013
8347911 Vacuum relief valve and method for assembling the same Jan. 8, 2013
8312891 Automatic switching valve with alarm Nov. 20, 2012
8151823 Fluid power valve arrangement with at least one solenoid valve Apr. 10, 2012
8141583 Valve controller Mar. 27, 2012
8000936 Data analysis system for determining coating conditions of a buried pipeline Aug. 16, 2011
7981279 Oil filter with bypass valve Jul. 19, 2011
7896027 Poppet valve assembly with in-line sight glass Mar. 1, 2011
7823606 Device for adjusting and throttling the flow-rate of a fluid, particularly medical oxygen and compressed gases in general Nov. 2, 2010
7823397 System and method for detecting clogged state of pipe of heat pump type multi-air conditioner Nov. 2, 2010
7819133 Valve controller Oct. 26, 2010
7779861 Device for adjusting the flow-rate of a fluid, particularly medical oxygen and compressed gases in general Aug. 24, 2010
7644725 Mixing valve and mixing device Jan. 12, 2010
7604017 Water ingress detection system Oct. 20, 2009
7591278 Sewer system vent monitor Sep. 22, 2009
7524364 Method and apparatus for draining pneumatic systems Apr. 28, 2009
7499761 Variable function voting solenoid-operated valve apparatus having air-to-move valve actuators and testing method therefor Mar. 3, 2009
7487794 Device for determining effects suffered by a flow-controlled gaseous medium Feb. 10, 2009
7469717 Fail safe shutter for use with a cross-stack monitor Dec. 30, 2008
7469716 Multiway valve Dec. 30, 2008
7461670 Cycle indicator for fluid distribution systems Dec. 9, 2008
7322423 Dry pipe valve for fire protection sprinkler system Jan. 29, 2008
7273067 Reduced profile electromechanical valve actuator Sep. 25, 2007
7229233 Double walled containment sumps Jun. 12, 2007
7124775 Micro pump device with liquid tank Oct. 24, 2006
7121299 Regulator valve with flow indicator for a hot-water heating system Oct. 17, 2006
7066202 Indicator-equipped flow regulating valve Jun. 27, 2006
7036524 Waste disposal system for recreational vehicles May. 2, 2006
7036789 Distribution valve comprising a flowmeter for installing in an inlet May. 2, 2006
7032611 Pressure regulator and method of use Apr. 25, 2006
6997200 Water conservation system Feb. 14, 2006
6988510 Disc check valve Jan. 24, 2006
6981522 Microfluidic devices with distributing inputs Jan. 3, 2006
6978661 Secondary containment leak prevention and detection system and method in fuel dispenser Dec. 27, 2005

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