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Class Information
Number: 340/660
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Electrical characteristic > Voltage
Description: Subject matter where the monitored characteristic is the electrical potential at a point in a current carrying circuit.

Sub-classes under this class:

Class Number Class Name Patents
340/661 Comparison 396
340/662 Overvoltage 172
340/663 Undervoltage 223

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8692680 Residual-current circuit breaker Apr. 8, 2014
8634942 Controller and operating method thereof Jan. 21, 2014
8599030 Communication apparatus, connection control method for communication apparatus and method of determining state of communication plug relative to communication connector in communication appara Dec. 3, 2013
8599031 Systems and methods for stray voltage detection Dec. 3, 2013
8555522 Laundry treating appliance with inlet temperature compensation Oct. 15, 2013
8558711 System for testing NAC operability using backup power Oct. 15, 2013
8547242 Power supply detecting circuit indicating a predetermined voltage range Oct. 1, 2013
8543251 Centralized fine grade control of device energy consumption Sep. 24, 2013
8537022 Method and device for configurable ground monitoring of a workbench Sep. 17, 2013
8519857 Systems and methods of controlling a fan in an electronic system Aug. 27, 2013
8508370 Synthetic thermoelectric materials comprising phononic crystals Aug. 13, 2013
8502689 System and method for voltage-based plasma excursion detection Aug. 6, 2013
8502649 Systems and methods for conveying information using a control signal referenced to alternating current (AC) power Aug. 6, 2013
8502688 Standalone self-supplied numeric controlled relay Aug. 6, 2013
8488428 Enhanced security of optical article Jul. 16, 2013
8456315 Monitoring device for functionally monitoring reporting system, reporting system, and method for monitoring Jun. 4, 2013
8446286 Method and system for a digital voltage detector with digital voltage display for armament circuit testing May. 21, 2013
8427332 Energy-saving reminder circuit for computer Apr. 23, 2013
8421639 Branch current monitor with an alarm Apr. 16, 2013
8421645 Electrostatic protector of portable electronic devices Apr. 16, 2013
8395520 Device for monitoring voltage of motherboard Mar. 12, 2013
8390465 Residual-current circuit breaker Mar. 5, 2013
8378819 Electrostatic occupant detection apparatus and method for detecting failure of the same Feb. 19, 2013
8374809 Systems for monitoring data from points along voltage transmission lines Feb. 12, 2013
8354936 Capacitive passenger detector for vehicle Jan. 15, 2013
8339270 Electrical ground protection device, circuit tester and method of circuit condition detection Dec. 25, 2012
8319638 Motion detector for detecting tampering and method for detecting tampering Nov. 27, 2012
8305222 Device for detecting and signalling malfunctions in the use of electrical appliances Nov. 6, 2012
8290695 Method for computing an energy efficient route Oct. 16, 2012
8284035 Systems and methods for conveying information using a control signal referenced to alternating current (AC) power Oct. 9, 2012
8279074 Battery monitoring system, such as for use in monitoring cell site power systems Oct. 2, 2012
RE43638 Utility power restoration indicator for power management system Sep. 11, 2012
8258970 Detection of the presence of a contactless communication element within the range of a terminal Sep. 4, 2012
8248261 Method and system for a digital voltage detector with digital voltage display Aug. 21, 2012
8223031 Ground potential rise monitor Jul. 17, 2012
8204651 Power source control device for power steering Jun. 19, 2012
8184012 Air conditioner and reverse phase detection method thereof May. 22, 2012
8185333 Automated load assessment device and method May. 22, 2012
8149128 Ground potential rise monitor Apr. 3, 2012
8094032 Voltage detecting circuit Jan. 10, 2012
8077049 Method and apparatus for communicating power distribution event and location Dec. 13, 2011
8059008 Surface-mounted crack detection Nov. 15, 2011
8049633 Electric field whistle Nov. 1, 2011
8026809 Monitoring method and stationary unit for a motor-driven door Sep. 27, 2011
8018349 Detecting an inline power shutoff failure Sep. 13, 2011
7965195 System, device and method for providing power outage and restoration notification Jun. 21, 2011
7961112 Continuous condition monitoring of transformers Jun. 14, 2011
7952488 Method and system for monitoring latent faults in power supplies May. 31, 2011
7944361 Electric field whistle May. 17, 2011
7944365 Systems, methods, and apparatuses for stray voltage detection May. 17, 2011

1 2 3 4 5 6 7 8

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