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| Number | Title | Issue Date |
| 5600209 | Electronic candle simulator Apparatus for simulating a candle flame in which the current through the filament of a bulb is varied from a first value to a second value and back to the first value during spaced periods that vary from a period of maximum duration to a period of minimum... | 02/04/1997 |
| 5578905 | Flow-responsive air purged portable electric lamp A portable electric lamp suitable for use in hazardous locations includes a fixture which is purged continuously with air during operation. Pressurized air is introduced at an input end of the fixture, through a plenum which establishes a generally lamina... | 11/26/1996 |
| 5517064 | Protective device for lighting system used in motor vehicle A protective device for a lighting system to be used for a motor vehicle constituting a power supply and a light source energized with the power from the power supply. The power to be supplied to the light source is controlled by a driver. The driver is i... | 05/14/1996 |
| 5467076 | Realty sign lighting/anti-theft assembly The realty sign lighting and display assembly is in the form of a real estate standard having a vertical post and a horizontal cross-arm from which depends a display panel. The cross-arm is specially constructed to incorporate within it anti-theft and dis... | 11/14/1995 |
| 5432406 | Wide range load current regulation in saturable reactor ballast A simple and compact magnetic ballast for powering a wide range of fluorescent lamp load Wattage such as 14 Watt to 60 Watt without need for modification to the ballast unit. Arc current to the lamp load is supplied through a saturable reactor including a... | 07/11/1995 |
| 5397960 | Neon lamp with sound-intensity control An inductive neon lamp set comprises a neon lamp and a circuit system comprising a speech detecting circuit for receiving a sound signal. The sound signal so received is amplified by a speech amplifying circuit of the circuit system which further comprise... | 03/14/1995 |
| 5382876 | Cord connection structure for connecting a ballast circuit and a starter circuit A cord connection structure for connecting a ballast circuit and a starter circuit in which an output cord from a starter circuit unit mounted on a lamp body is connected to a discharge bulb inserted into a bulb insertion hole, and an output cord from a b... | 01/17/1995 |
| 5361018 | Intermediate voltage cable marker with enhanced conspicuity An intermediate voltage or cable marker with a gas filled lamp with reflectively enhanced conspicuity comprising an inner conductive coating in an opaque shell; the shell being mountable on an the intermediate voltage line and having one end of the gas fi... | 11/01/1994 |
| 5261315 | Precision capillary discharge switch The apparatus and method disclosed herein relates to a precision capillary discharge switch to deliver a predetermined power across a gap at the ends of electrodes enclosed in a containment envelop with a fluid media therein. A method of calibration is us... | 11/16/1993 |
| 5220246 | Method and apparatus for transmitting information using arc An information transmission method using arc and apparatus thereof are applied to a loudspeaker and the like having the function of illumination. The information transmission method is characterized in that arc current supplied to an arc generating device... | 06/15/1993 |
| 5162665 | Elevator call button/annunciator assembly and circuit A vibration-resistant elevator call button/annunciator assembly comprises: a switch housing defining an interior cavity and apertures opening into the cavity; a switch mounted in the housing; a switch actuating member movably disposed in the cavity; a res... | 11/10/1992 |
| 5148084 | Apparatus and method for providing ignition to a turbine engine A unipolar ignition of the invention provides a current waveform at the ignitor plug which initially rises relatively slowly, followed by a transition to a fast rising current which quickly peaks and thereafter slowly dissipates. Such a current waveform p... | 09/15/1992 |
| 5118196 | Electromagnetic Christmas tree lights Wireless Christmas tree lights (1) illuminated by means of Electro-Magnetic Energy eminating from a self contained antenna. Multiple wireless lamps may be placed anywhere on the tree without being constrained by wire length. The Electro-Magnetic Energy is... | 06/02/1992 |
| 5107180 | System for operating a portable lamp Provided in a portable lamp is a cathode-heatable fluorescent bulb which is supplied from a rechargeable battery. For the purpose of charging, the lamp is coupled with a charging device situated in a region which is not at risk. The charging device is pro... | 04/21/1992 |
| 5089745 | Amusement device incorporating gas discharge tube An amusement device comprising a gas-filled plasma discharge tube; an electrode adjacent an end of the tube for coupling high-frequency, high-voltage energy into the gas in the plasma discharge tube; an ionization energy supply operably connectable to a s... | 02/18/1992 |
| 5034658 | Christmas-tree, decorative, artistic and ornamental object illumination apparatus An illuminating system is provided for objects such as Christmas trees, decorations, works of art and ornaments. Electrically operated, light-emitting elements are hung on or fastened to or within these objects. The light-emitting elements include an elec... | 07/23/1991 |
| 5015918 | Bicycle single-wire lighting system with steady-flashing-reflector rear warning device Red LEDs having sufficient brightness and efficiency are employed for a bicycle tail lamp. A xenon strobe provides extended visibility over the steady red LED beam, identifiable as a vehicle tail lamp; dispersed high intensity flashes of the strobe may be... | 05/14/1991 |
| 5001402 | Illuminated aerial marker An illuminated aerial marker for a high voltage transmission line using a spherical colored opaque capacitor with gas filled lamps electrically connected, exterior to the capacitor with one electrode of the lamps connected to the high voltage source and t... | 03/19/1991 |
| 4928036 | Vehicle headlamp system with series high beam daylight running lamp operation A headlamp system provides for the high beam headlamp filaments to be connected in series across the supply voltage for half voltage energization in daytime running lamp operation when the ignition switch is closed, a DRL enabling switch is open and the h... | 05/22/1990 |
| 4896075 | Automatic headlight and parking light switching Turning on either headlights or parking lights pulses a first control circuit and energizes a relay, closing normally open contacts in the light circuits. The closing of the contacts energizes a second control circuit which holds the relay on and supplies... | 01/23/1990 |
| 4873646 | Digital Correction of linear system distortion An M-element waveform data sequence representative of an analog input signal during a period of interest is produced by first amplifying the input signal with a linear amplifier and periodically digitizing the amplifier output signal to produce a first da... | 10/10/1989 |
| 4873470 | Programmable ultraviolet lamp control system A variable intensity, ultraviolet lamp is used in a drying process. The ultraviolet lamp provides a low level intensity for use during a low intensity portion of the drying or curing cycle and provides a high level intensty for use during an increased or ... | 10/10/1989 |
| 4862036 | Electrical circuit for controlling the operation of high intensity motorcycle lamps An electrical circuit for controlling the power consumption of high intensity motorcycle lamps which reduces the voltage across the lamps during long periods of operation and enables the lamps to alternate operation between full and reduced intensity. A m... | 08/29/1989 |
| 4860177 | Bicycle safety light A bicycle safety light which improves the visibility of the bicycle and rider in low light conditions via a constantly moving and converging pattern of light rows which visually direct and emphasize to a following viewer the center position of the rider a... | 08/22/1989 |
| 4839567 | Illuminated aerial marker An illuminated aerial marker for a high voltage transmission line using a spherical colored opaque capacitor with neon lamps in series or series/parallel or parallel, exterior to the capacitor with one electrode of the lamps connected to the high voltage ... | 06/13/1989 |
| 4831310 | Automatic headlight control system Apparatus for causing an external light system of a motor vehicle to be actuated when the vehicle engine is running, the vehicle having an electrical battery associated with the engine, and the running of the engine causing an AC signal to appear with a D... | 05/16/1989 |
| 4816738 | Tap changing power regulator for airport lighting A power current regulator, in particular for airport lighting, includes transformers in series with intermediate taps on their secondary windings staged a various different numerical weights. In each case, one of said taps is selected by a latch memory (M... | 03/28/1989 |
| 4796018 | Exit guiding system An exit guiding system comprising detectors of changes in ambient condition due to a fire, a guiding device positioned near each fire exit or exit access, instruction means controlling operation or non-operation of each guiding device based upon signal le... | 01/03/1989 |
| 4689523 | Optical cleaning system for removing matter from underwater surfaces An optical cleaning system for removing matter from underwater surfaces comprising the high energy strobe lamp, a capacitor electrically connected to the strobe lamp, a power supply electrically connected to the capacitor, and a trigger circuit electrical... | 08/25/1987 |
| 4656398 | Lighting assembly A lighting assembly including a plurality of housing sections, a series of rib groups arranged circumferentially on the exterior of the housing sections, and a remote control assembly for selectively energizing tri-color diodes embedded in the ribs so tha... | 04/07/1987 |
| 4629946 | Neon sign control device In a neon sign control device, a.c. power of an a.c. power source is connected to a neon transformer through an electronic switching element, a control signal from a control signal generator is supplied to a trigger circuit, the trigger circuit generates ... | 12/16/1986 |
| 4605882 | Electronic jewelry simulating natural flickering light The light-emitting electronic jewelry of the invention includes a base item of jewelry having a light emitter and at least one light sensor mounted thereon and connected in an electrical circuit with other circuit elements which coact to intermittently in... | 08/12/1986 |
| 4602191 | Jacket with programmable lights A jacket with programmable lights in which apertures are provided in the garment through which tri-color light emitting diodes LED's protrude. The LED's are connected to a flexible printed circuit board which adheres to the inner surface of the garment by... | 07/22/1986 |
| 4588927 | Light supply apparatus for an endoscope A light supply apparatus for an endoscope comprises a discharge lamp for supplying light to an endoscope, and a microprocessor for controlling various devices such as a display unit for displaying data. The discharge lamp is ignited by an ignition signal.... | 05/13/1986 |
| 4422069 | System for indicating an emergency exit At least one, and preferably two, flashable lights are positioned near an exit door and are actuated in case of an emergency such as a fire or interruption of power. The lights are preferably located near the floor on opposite sides of the exit and are en... | 12/20/1983 |
| 4410930 | Photo voltaic lighting for outdoor telephone booth A free standing outdoor telephone booth is provided with a photo voltaic (PV) array, one or more rechargeable storage batteries and electrical control circuit which includes a temperature compensated control for limiting the supply of electrical energy fr... | 10/18/1983 |
| 4395661 | Time-variable control for lamp intensity A time-variable illumination control apparatus for a lamp permits light intensity to be gradually increased starting at a predetermined time. The intensity control includes a clock-timer to initiate time-variable power supply network. The illumination con... | 07/26/1983 |
| 4380721 | Proximity switch A proximity switch or detector is disclosed herein having an oscillator circuit for establishing a radio frequency field about an antenna so that the presence of an object or agent in close proximity to the antenna causes the oscillator to become loaded a... | 04/19/1983 |
| 4353008 | Display apparatus for a drum A display apparatus is provided which is responsive to an audio signal to vary the illumination of a light source. The light source has a variable resistance having an initial value when the light source is cold and a larger value when the light source is... | 10/05/1982 |
| 4039894 | Antenna lamp A lamp for use on a radio antenna is disclosed. The lamp consists of a neon bulb encapsulated in a transparent or translucent covering, with the bulb leads secured in an electrically conductive tube. The tube is adapted for connection to and support by an... | 08/02/1977 |
