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Browse by Category: Main > Communications
Class Information
Number: 340/608
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Fluent material > Flow rate > Stoppage
Description: Subject matter wherein the predetermined condition indicated is the cessation of the monitored flow.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8690014 Method and device for identifying a change in pressure in the liquid path of a microdosing device Apr. 8, 2014
8681010 Method and apparatus for detecting occlusions in an ambulatory infusion pump Mar. 25, 2014
8676445 Hydraulic steering diagnostic system and method Mar. 18, 2014
8587441 Water flow detector Nov. 19, 2013
8487776 Duct grease deposit detection devices, systems, and methods Jul. 16, 2013
8264363 System and method for detecting occlusion using flow sensor output Sep. 11, 2012
8144022 Heat sensitive sensor for flexible waveguides Mar. 27, 2012
8138931 Diagnostic and response systems and methods for fluid power systems Mar. 20, 2012
8081069 Method and device for identifying a change in pressure in the liquid path of a microdosing device Dec. 20, 2011
8059004 Drain blockage responsive alarm system Nov. 15, 2011
7880624 System and method for detecting occlusion using flow sensor output Feb. 1, 2011
7868774 Oil leakage detector Jan. 11, 2011
7821411 Safety device for monitoring a conduit Oct. 26, 2010
7675434 Method and device for detecting, on the ground, the obstruction of a pressure tap of a static pressure sensor of an aircraft Mar. 9, 2010
7639151 Liquid blocking apparatus and system equipped with an alarm or wireless calling device and a storing bag Dec. 29, 2009
7583198 Method and apparatus for detecting water leaks Sep. 1, 2009
7423542 Water detection sensing system Sep. 9, 2008
7336190 Early detection and advanced warning "waste is backing up" apparatus and method Feb. 26, 2008
7260496 Pressure detector and method of diagnosing blockage of impulse lines Aug. 21, 2007
7221280 Urinous wet alarm May. 22, 2007
7218237 Method and apparatus for detecting water leaks May. 15, 2007
7091868 Portable liquid level detector Aug. 15, 2006
7084778 Ammonia flow alarm and method therefor Aug. 1, 2006
7023351 Apparatus and method of controlling water supply of washing machine Apr. 4, 2006
6950029 Airflow blockage detection apparatus for a permanent split-capacitor single-phase fan motor Sep. 27, 2005
6904386 Control system and method for detecting plugging in differential pressure cells Jun. 7, 2005
6894620 Method and device for monitoring the service life of a filter May. 17, 2005
6842117 System and method for monitoring and indicating a condition of a filter element in a fluid delivery system Jan. 11, 2005
6819250 Out-of-liquid sensor, and liquid supply device using same Nov. 16, 2004
6788209 Automatic emergency shut-off system for delivery transports Sep. 7, 2004
6734801 Switch frame electronic air filter alarming device May. 11, 2004
6731216 Proper tubing installation testing method and apparatus for a peristaltic pump May. 4, 2004
6661514 Tube blockage monitor Dec. 9, 2003
6513542 Liquid supply or drain pipe equipped with a leakage detector Feb. 4, 2003
6507282 Filter monitoring system using a thermistor Jan. 14, 2003
6437694 Air controlled sensor Aug. 20, 2002
6396404 Double check valve assembly for fire suppression system May. 28, 2002
6342841 Influent blockage detection system Jan. 29, 2002
6292103 Alarm system for detecting waste liquid discharge blockage Sep. 18, 2001
6052058 Filter integrity monitoring system Apr. 18, 2000
5699049 Monitoring system for non-pressurized conduit Dec. 16, 1997
5680109 Impulse line blockage detector systems and methods Oct. 21, 1997
5673026 Stopped flow detection using statistical methods Sep. 30, 1997
5668535 Filter condition sensor and indicator Sep. 16, 1997
5657000 Peristaltic pump occlusion detector and adjuster Aug. 12, 1997
5563585 Water pump monitor Oct. 8, 1996
5503036 Obstruction detection circuit for sample probe Apr. 2, 1996
5402111 Simplified fluid flow detector Mar. 28, 1995
5369398 Circuit for detecting calcification in a coffee maker Nov. 29, 1994
5367292 Warning apparatus for a tracheotomy tube Nov. 22, 1994

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