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Class Information
Number: 315/74
Name: Electric lamp and discharge devices: systems > Combined load device or load device temperature modifying means and electrical circuit device structure > Automatic shunt circuit closing or cut-out switch
Description: Subject matter, wherein the electric switch is structurally connected with the load device so as to complete an electrical circuit in shunt about the load device or some part thereof, and/or to open the load device current supply circuit, the switch being designed to automatically operate (1) when the load device becomes nonconductive or fails to operate properly, or (2) when the supply voltage and/or current becomes too high or too low for the proper operation of the load device, or (3) when more than a desired number of load devices are connected to the supply circuit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7298098 |
Intellectual lamp unit able to be installed on a conventional lamp socket controlled by a wall switch |
Nov. 20, 2007 |
| 7242141 |
Integrated fuses for OLED lighting device |
Jul. 10, 2007 |
| 7191510 |
Electroluminescent (EL) lamp with current limiting fuse |
Mar. 20, 2007 |
| 7053557 |
Retrofit light emitting diode tube |
May. 30, 2006 |
| 6936968 |
Retrofit light emitting diode tube |
Aug. 30, 2005 |
| 6720718 |
Thin walled lamp with tungsten halogen capsule and pyrophoric fuse |
Apr. 13, 2004 |
| 6653784 |
Type of light |
Nov. 25, 2003 |
| 6590323 |
Photo diode lamp |
Jul. 8, 2003 |
| 6570327 |
Lamp with safety switch |
May. 27, 2003 |
| 6534924 |
Method and apparatus for manufacturing electron source, and method manufacturing image forming apparatus |
Mar. 18, 2003 |
| 6525479 |
Method and ballast for operating a lamp fitted with a fluorescent tube |
Feb. 25, 2003 |
| 6326728 |
Type of light |
Dec. 4, 2001 |
| 6316878 |
Electric-light bulb |
Nov. 13, 2001 |
| 6081246 |
Method and apparatus for adjustment of FED image |
Jun. 27, 2000 |
| 6037854 |
Thermal fuse for fluorescent lamps |
Mar. 14, 2000 |
| 5684366 |
Lamp protection device |
Nov. 4, 1997 |
| 5646484 |
High reliability incandescent portable illumination system |
Jul. 8, 1997 |
| 5565736 |
Discharge lamp provided with a bimetal switch, and bimetal switch suitable for a lamp |
Oct. 15, 1996 |
| 5545952 |
Self grounding lamp for special use in an underwater environment |
Aug. 13, 1996 |
| 5532557 |
Electric light socket constructions |
Jul. 2, 1996 |
| 5530318 |
EL lamp with integral fuse and connector |
Jun. 25, 1996 |
| 5355053 |
High pressure sodium lamp starting aid |
Oct. 11, 1994 |
| 5336974 |
High-pressure discharge lamp |
Aug. 9, 1994 |
| 5325017 |
High-pressure discharge lamp having solid state getter mounted on bimetallic element |
Jun. 28, 1994 |
| 5117156 |
Rapid start fluorescent lamp having quick hot restarting |
May. 26, 1992 |
| 5109183 |
High pressure discharge lamp having a simplified mount construction |
Apr. 28, 1992 |
| 5051657 |
Safety filament assembly for double-enveloped arc discharge lamp |
Sep. 24, 1991 |
| 4992703 |
Metal halide lamp with dual starting electrodes and improved maintenance |
Feb. 12, 1991 |
| 4973881 |
Automatic shut-off device for an electric lamp |
Nov. 27, 1990 |
| 4963793 |
Delayed response touch switch controller |
Oct. 16, 1990 |
| 4922155 |
Protective circuit for reduced voltage lamps |
May. 1, 1990 |
| 4752718 |
High intensity discharge lamp with integral means for arc extinguishing |
Jun. 21, 1988 |
| 4751432 |
High-pressure discharge lamp |
Jun. 14, 1988 |
| 4751623 |
Heat deactivated illumination device |
Jun. 14, 1988 |
| 4742275 |
High pressure metal vapor discharge lamp with starting element |
May. 3, 1988 |
| 4725760 |
Structure of flasher bulb |
Feb. 16, 1988 |
| 4709187 |
Lamp with lead wire thermal switch |
Nov. 24, 1987 |
| 4701675 |
Apparatus for limiting arc discharge current in incandescent lamp |
Oct. 20, 1987 |
| 4686422 |
High-pressure metal vapor discharge lamp with characteristic fuse action |
Aug. 11, 1987 |
| 4677343 |
Sealed beam lamps |
Jun. 30, 1987 |
| 4672273 |
Electronic flash device for camera |
Jun. 9, 1987 |
| 4672270 |
Metal vapor discharge lamp having a starting device of a thermal switch type |
Jun. 9, 1987 |
| 4656396 |
Fluorescent lamp circuit breaker with low contact resistance |
Apr. 7, 1987 |
| 4647893 |
Rapid-start fluorescent lamp having a bimetal circuit breaker with leg portions of unequal length |
Mar. 3, 1987 |
| 4642520 |
High pressure discharge lamp |
Feb. 10, 1987 |
| 4629939 |
Discharge lamp with automatic shut off |
Dec. 16, 1986 |
| 4628226 |
Method and arrangement for preventing cathode damage when switching on field emission electron guns |
Dec. 9, 1986 |
| 4616156 |
Tri-model type circuit breaker and rapid-start fluorescent lamp |
Oct. 7, 1986 |
| 4600861 |
Fluorescent lamp circuit breaker |
Jul. 15, 1986 |
| 4600860 |
Rapid-start fluorescent lamp closure switch |
Jul. 15, 1986 |
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