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Class Information
Number: 315/136
Name: Electric lamp and discharge devices: systems > With signal, indicator, or alarm > Electrically operated switch controlling the signal circuit
Description: Systems having an electrical signal, indicator, or alarm means, the circuit of the electrical signal, indicator, or alarm means being controlled by an electrically operated electric switch which is actuated in response to some condition of the load device or its supply circuit.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8622579 Illumination system Jan. 7, 2014
8598792 Driving circuit for powering LED light sources Dec. 3, 2013
8558458 Exit light and emergency light which have function to indicate residual charge of battery Oct. 15, 2013
8525372 Feather-touch dimming switch Sep. 3, 2013
8525542 Short circuit detection device Sep. 3, 2013
8482228 Visible indication of mistaken lamp use Jul. 9, 2013
8442785 System and method for streetlight monitoring diagnostics May. 14, 2013
8314562 Lamp Nov. 20, 2012
8274233 Load control device having a visual indication of energy savings and usage information Sep. 25, 2012
8140276 System and method for streetlight monitoring diagnostics Mar. 20, 2012
8053996 Light emitting device for transmission of communications information Nov. 8, 2011
7977887 Low leakage current LED drive apparatus with fault protection and diagnostics Jul. 12, 2011
7701153 Visible indication of mistaken lamp use Apr. 20, 2010
7583031 PAPI 1 style a TILT system Sep. 1, 2009
7511628 Status indicator circuit for a dimmer switch Mar. 31, 2009
7501769 Light fixture with a diagnostic ballast Mar. 10, 2009
7227310 Method and devices for controlling loads connected to a power line Jun. 5, 2007
7218057 PAPI 1 style B combination lamp bypass and tilt switch and control system May. 15, 2007
7098877 Driver circuit Aug. 29, 2006
6945666 Illumination device with removable power pack Sep. 20, 2005
6791276 Gradually lighting/dimming wireless transmission indicator lamp Sep. 14, 2004
6737814 Enhanced trim resolution voltage-controlled dimming LED driver May. 18, 2004
6717660 System for monitoring and testing of light sources Apr. 6, 2004
6710553 Switching device for controlling a lamp from both a wall switch and the lamp's switch Mar. 23, 2004
6603342 Light emitting element driver with low supply voltage Aug. 5, 2003
6570505 LED lamp with a fault-indicating impedance-changing circuit May. 27, 2003
6570340 Stirring of electrochemical cells for extended life May. 27, 2003
6445132 Multi-mode light-emitting device for underwater applications Sep. 3, 2002
6368270 Lighting apparatus for endoscope and method of using an endoscopic system provided with the lighting apparatus Apr. 9, 2002
6356027 0-10V dimming interface protection circuit Mar. 12, 2002
6323598 Enhanced trim resolution voltage-controlled dimming led driver Nov. 27, 2001
6292339 Output protection for arc discharge lamp ballast Sep. 18, 2001
6040660 Device for controlling the intensity of the light emitted by a lighting element of a lighting apparatus, in particular a flashlight Mar. 21, 2000
5986407 Control apparatus for permitting operation of an ac-powered lamp unit as an emergency lighting device Nov. 16, 1999
5917287 Operating circuit for high-pressure discharge lamps with an ignition-time bridging function Jun. 29, 1999
5657117 Device for examining optical waveguides Aug. 12, 1997
5644194 Circuit for controlling an indicator light to turn off slowly Jul. 1, 1997
5625260 Systems and methods for transmitting pulse signals Apr. 29, 1997
5585698 Current supply means for a laser flash lamp Dec. 17, 1996
5578998 Method and apparatus for predicting of lamp failure Nov. 26, 1996
5537006 Power supply Jul. 16, 1996
5497051 Current supply means for a laser flash lamp Mar. 5, 1996
5442258 LED lamp device Aug. 15, 1995
5422543 Flash monitor alarm system Jun. 6, 1995
5311100 Water-activated survival lamp unit and an improved water-responsive switch therefor May. 10, 1994
5300863 Auxiliary lighting circuit for a gaseous discharge lamp Apr. 5, 1994
5291100 Low watt metal halide lamp apparatus Mar. 1, 1994
5223678 Replacement elevator call button unit Jun. 29, 1993
5179325 Touch-sensitive illuminable door lock Jan. 12, 1993
5115165 Safety lighting means for use with a high intensity discharge lamp May. 19, 1992

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