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6559578 Spark plug for an internal combustion engine  
A spark plug having a tubular metallic housing has an internal conductor arrangement including a refractory erosion. The refractory erosion resistor is designed either as a wound wire resistor or a...
6300581 Christmas tree tip switch safety device  
There is provided an electric cord and switch mechanism with receptacles for the insertion of electric plugs and a plug end for insertion into a wall outlet. The cord, receptacle and switch being...
6288491 Metal halide lamp  
To achieve the foregoing objects and in accordance with the purpose of the invention, as embodied and broadly described herein, the metal halide lamp of this invention comprises a vitreous arc tube...
5532557 Electric light socket constructions  
Light socket improvements include a thermal conductor which removes heat by inducing a flow of air within the socket and/or which acts as heat sink that more efficiently transfers heat to the...
5309062 Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator  
A compact low-pressure gas discharge lamp assembly includes a base and a plurality of low-pressure gas discharge light generating elements mounted to the base. Each of the light generating elements...
5247228 Fluorescent lamp ballast adaptor  
An adaptor circuit used to enable stable, flicker-free operation of T8-type fluorescent lamps in a lighting fixture which already has a standard two-lamp, series-sequence, 40 watt, rapid-start type...
5185557 High-pressure discharge lamp  
A high-pressure discharge lamp has an outer bulb which surrounds a discharge vessel with intervening space. The lamp is provided with an ignition circuit which comprises a SIDAC. According to the...
5136213 Motion detecting light controller system  
A motion detecting light controller system which includes a light bulb socket adapter having a control circuit for the light which is controlled. The control circuit utilizes a first LED and a...
5053676 High-pressure discharge lamp  
The invention relates to a high-pressure discharge lamp provided with a discharge vessel enclosed with intervening space by an outer bulb. An ignition circuit includes a voltage-dependent...
5013969 Protective device for neutron tubes  
A protective device for a neutron tube including an ion source having an anode (2) which is brought to a positive potential relative to a cathode (3) by means of a source supply. An ion beam...
4992701 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Motion detecting light controller system  
A motion detecting light controller system which includes a light bulb socket adapter having a control circuit for the light which is controlled. The control circuit utilizes a first LED and a...
4988921 Lamp with integral automatic light control circuit  
A lamp assembly includes a sealed lamp envelope enclosing a filament, a lamp base affixed to the lamp envelope and including a connector, and an automatic light control circuit located in the lamp...
4970436 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Motion detecting light controller system  
A motion detecting light controller system which includes a light bulb socket adapter having a control circuit for the light which is controlled. The control circuit utilizes a first LED and a...
4961027 Discharge lamp having a standardized base  
This illumination lamp (5) includes a discharge tube (6, 7), a standardized base (10) and an intermediate element (9) arranged between the tube and the base. The lamp is characterized in that an...
4764708 Touch control lamp socket interior  
An electronic touch control light socket used to convert a lamp to touch-sensitive use which includes a circuit housing and a light bulb insertion socket mounted thereto which together are adapted...
4740873 Energy saving "U" shaped fluorescent lamp  
A "U" shaped fluorescent lamp includes a housing extending the legs of the lamp, the housing containing means to reduce current flow in the lamp, thereby saving energy.
4727289 LED lamp  
The present invention provides a light-emitting diode lamp having a printed circuit board which is arranged inside a glass bulb having a base at an end thereof, via a stem and stays. A plurality of...
4725759 Pilot lamp  
A conventional pilot lamp which is used in a power plant, substation, or other types of plants, each has its own large and heavy weight transformer below the lamp case. In order to obtain a pilot...
4694215 Compact, single-ended fluorescent lamp with fill vapor pressure control  
To improve the stability of operation of a compact, single-ended fluoresc lamp under "base down" operation, and provide for a predetermined temperature "cold spot" defining the vapor pressure...
4647820 Discharge lamp ignition and supply circuit having a PTC resistor  
In a circuit for an inductively stabilized discharge tube (1) provided with two preheatable electrodes (2, 3) the ends of one electrode (2) are connected via a first capacitor (22) and a second...
4590407 Scale illumination lamp control circuit for an oscilloscope  
A lamp control circuit particularly suited for scale illumination in cathode-ray tube display devices provides stabilized lamp control impervious to temperature fluctuations for either constant or...
4560906 Lighting system and compact electric lighting unit  
A lighting system having a high pressure gas discharge light source and an incandescent light source within a common sealed and evacuated bulb. A ballast unit fitted externally to the neck of the...
4547704 Higher efficiency incandescent lighting units  
An improved high efficiency general service incandescent lighting unit is disclosed. The lamp has coaxial outer and inner envelopes. The inner envelope has a low voltage filament coaxially disposed...
4546290 Ballast circuits for discharge lamp  
A high frequency ballast circuit for a discharge lamp particularly of the so-called energy saving type adapted to fit into conventional incandescent lamp sockets. The circuit comprises an inductive...
4449071 Fluorescent lamp device  
A fluorescent lamp device including an outer tube containing a fluorescent lamp therein, a connection tube connected to one end of the outer tube, a cap containing a glow starter and a condenser...
4406969 Circular fluorescent lamp holder  
A holder for circular fluorescent lamps has a central body with a pair of arms terminating in lamp holding means. The lamp holding means include lamp receiving openings which are arrayed orthogonal...
4386296 Fluorescent light unit with dual light levels  
A screw-in fluorescent light unit having two light levels, for use in a 3-way socket. A reactor ballasts the lamp for high light output, and a positive temperature coefficient resistor (thermistor)...
4375607 Compact lamp unit having plug-in fluorescent lamp and module components  
The convoluted fluorescent lamp component of a compact lamp unit is mechanically and electrically coupled to a base module by a plate-like mounting member which is secured to the module in...
4367434 Lampholder fitting with three-way brightness solid-state fluorescent lamp ballast  
A fluorescent lampholder fitting has a fluorescent lamp having first and second ends respectively provided with starting filaments. The lamp is supported by a housing which also encloses a...
4358710 Fluorescent light unit with dimmable light level  
A screw-in fluorescent light unit having high and low light levels, for use in a 3-way socket. A reactor ballasts the lamp for high light output, and a variable dimming circuit is added to ballast...
4358709 Fluorescent light unit with dual light levels  
A screw-in fluorescent light unit having two light levels, for use in a 3-way socket. A reactor ballasts the lamp for high light output, and a resistor is added to ballast the lamp for low light...
4337414 Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp  
A fluorescent lamp of high brightness and compact size is provided by forming the envelope from vitreous tubing that is bent upon itself in such a manner that the envelope has either five or seven...
4329625 Light-responsive light-emitting diode display  
A light-responsive light-emitting diode display comprises a light-emitting diode circuit including a series connection of light-emitting diodes and a light-responsive current-controlling circuit...
4300073 Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp  
A fluorescent lamp having a triple-U-bent tubular envelope is combined with circuit means, a translucent protective cover and a threaded base member to provide an efficient screw-in type lamp unit...
4288725 Lightweight fluorescent lamp ballast  
A lightweight starting and operating ballasting means for starting and operating a fluorescent lamp means from a household source of AC energy. The ballasting means has elements which perform with...
4284925 Multiple level dimming circuit for fluorescent lamp  
A dimming circuit for operating a fluorescent lamp in an incandescent-to-fluorescent adapter at two selectable current levels. The circuit includes a choke which is series connected between the...
4270071 Composite base and ballast member for compact single-ended fluorescent lamp  
Composite base member for operatively retaining a compact, single-ended fluorescent lamp which has an elongated but retroflexed or curved envelope. The base member has a hollow body with a mounting...
4224554 Spark plug having a low noise level  
A spark plug incorporating a winding type inductor has a low noise level from a low frequency range to a high frequency range. The spark plug comprises a ceramic insulator having a bore, a metal...
4211955 Solid state lamp  
An integrated circuit chip containing one or more light-emitting diodes is mounted within a light-diffusing encasement having a standard incandescent light bulb lamp base. The integrated circuit...
4178535 Three-way brightness fluorescent lampholder fitting  
A fluorescent lampholder fitting has a preheat type circular fluorescent lamp with its ends in proximity and having a first end provided with a starting filament with a first and second filament...
4173730 Compact fluorescent lamp unit having integral circuit means for DC operation  
A single-ended fluorescent lamp having a partitioned envelope is coupled to a threaded screw-in type base and a module that contains a miniaturized electronic circuit which permits the lamp to be...
4163176 Energy saving fluorescent lamp  
A fluorescent lamp has an extension base at one end thereof which contains an impedance to reduce current flow through the lamp. The length of the lamp plus extension base equals the length of a...
4159510 High-intensity lamp having high pulse repetition rate and narrow pulse-width  
A high intensity light source having high repetition rate and narrow pulse-width. The light source comprises a metal casing having coaxially mounted arcing electrodes therein which utilize the...
4144474 Low noise resistance containing spark plug  
A spark plug is disclosed which is used for an internal combustion engine such as an automobile. The spark plug has a carbonaceous resistance sandwiched between its spark rod electrode and its...
4134042 Electric discharge lamp control circuit having a temperature dependent capacitor  
An improved control circuit for an electric discharge lamp includes a temperature-dependent capacitor connected in series or in parallel with the discharge lamp. The capacitor preferably has a...
4117371 Electric device provided with a metal vapor discharge lamp  
A metal vapor discharge lamp includes a discharge tube with main electrodes at each end. A starting electrode extends around at least an axial portion of the tube intermediate the main electrodes,...
4082981 Energy saving device for a standard fluorescent lamp system  
There is provided in combination with a rapid-start series-sequence type ballast for two low-pressure mercury discharge lamps, apparatus for reducing the power consumption of both lamps. The...
4020388 Discharge device  
A discharge device for igniting a fuel-air mixture whereby fuel droplets in the mixture are electrically charged and, under the influence of an electric field, caused to congregate at a region...
3975659 Lamp with an integrated flasher device  
A lamp for installation in the flashers or winkers of motor vehicles, with a flasher device integrated into the lamp itself, is provided. The flashing is produced, in the case of the invention, by...
3873880 Self-powered illuminated ornamental device  
Gas-discharge tubes, such as neon lamps, are operated from a D.C. power supply which is loacted inside of an ornamental device. The supply may be a plurality of batteries or a D.C.-to-D.C....
Matches 1 - 50 out of 134 1 2 3 >