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Class Information
Number: 315/130
Name: Electric lamp and discharge devices: systems > With signal, indicator, or alarm > Plural load device systems
Description: Systems having a plurality of load devices connected in the system.










Sub-classes under this class:

Class Number Class Name Patents
315/131 Selective indication of the load device 42


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8665114 Display Mar. 4, 2014
8588995 Vehicle control device Nov. 19, 2013
8581499 Method and system for determining signal state Nov. 12, 2013
8558463 LED matrix open/short detection apparatus and method Oct. 15, 2013
8547023 LED light source module Oct. 1, 2013
8531116 Apparatus and method of driving light source Sep. 10, 2013
8531114 Illumination beacon Sep. 10, 2013
8436540 Multi-lamp driving system May. 7, 2013
8405323 Method and apparatus for signal presentation Mar. 26, 2013
8264155 Solid state lighting devices providing visible alert signals in general illumination applications and related methods of operation Sep. 11, 2012
8212485 Dimming bridge module Jul. 3, 2012
8184071 LED driver circuit and the method thereof May. 22, 2012
8174197 Power control circuit and method May. 8, 2012
8140276 System and method for streetlight monitoring diagnostics Mar. 20, 2012
7671538 Method and system for economical emergency activation of electrical devices Mar. 2, 2010
7629601 LED flasher Dec. 8, 2009
7560875 Balancing transformers for multi-lamp operation Jul. 14, 2009
7425798 Intelligent light degradation sensing LED traffic signal Sep. 16, 2008
7394203 Method and system for open lamp protection Jul. 1, 2008
7268497 Lighting device with night light and human body sensing capability Sep. 11, 2007
7238326 Germicidal treatment system with status indicator Jul. 3, 2007
7190120 Airport strobe light monitoring system Mar. 13, 2007
7102540 Remote access of an airport airfield lighting system Sep. 5, 2006
7068188 Runway approach lighting system and method Jun. 27, 2006
6965203 Method and circuit for repetitively firing a flash lamp or the like Nov. 15, 2005
6917164 Light signaling device related to the operating state of a system Jul. 12, 2005
6885297 Process for management of a light signaling device, and a device using this process, particularly for avionics Apr. 26, 2005
6762563 Module for powering and monitoring light-emitting diodes Jul. 13, 2004
6717660 System for monitoring and testing of light sources Apr. 6, 2004
6664736 Method and system for indicating bulb circuit failure Dec. 16, 2003
6504485 Monitoring apparatus and control apparatus for traffic signal lights Jan. 7, 2003
6448716 Solid state light with self diagnostics and predictive failure analysis mechanisms Sep. 10, 2002
6300878 Constant current regulator using IGBT control Oct. 9, 2001
6184799 Monitoring apparatus and control apparatus for traffic signal lights Feb. 6, 2001
6078257 Current detector flood light lamp removal alarm Jun. 20, 2000
5969642 Airfield lighting system Oct. 19, 1999
5955844 Smart logic switching uninterruptible power source Sep. 21, 1999
5926115 Airfield series circuit communications lighting system and method Jul. 20, 1999
5644304 Automatic control system of lights in a series circuit illumination plant, in particular lights for airport signalling Jul. 1, 1997
5638057 Ground fault detection and measurement system for airfield lighting system Jun. 10, 1997
5625260 Systems and methods for transmitting pulse signals Apr. 29, 1997
5485151 Airfield lighting system Jan. 16, 1996
5426429 Supervision and control of airport lighting and ground movements Jun. 20, 1995
5397963 Subsystem and method for detecting lamp failure Mar. 14, 1995
5387909 Lamp sensing system for traffic lights Feb. 7, 1995
5359325 Automatic monitoring system for airfield lighting systems Oct. 25, 1994
5248967 Method and apparatus for monitoring electrical devices Sep. 28, 1993
5243340 Supervision and control of airport lighting and ground movements Sep. 7, 1993
5168198 Lamplight failure detection system Dec. 1, 1992
5099177 Lamp circuit with disconnected lamp detecting device Mar. 24, 1992

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