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| Number | Title | Issue Date |
| 4868981 | Method of making loop-feed wiring arrangement for electric circuit breakers and switches Double-lug wiring assemblies are added to multipole eletric circuit breaker load centers to allow for loop-feed connection between the load centers when employed within satellite power take-off facilities. The loop-feed arrangement results in a substantia... | 09/26/1989 |
| 4870531 | Circuit breaker with removable display and keypad An electronic circuit interrupter digital display and keypad device includes a display to view circuit breaker settings and a keypad to select settings and values to be displayed. The display and keypad device removably connects to an electronic trip unit... | 09/26/1989 |
| 4870421 | Regulating switch for transmitting modules in a phased array radar The invention relates to compact means for turning power on and off and regulating that power as it is supplied to a pulsed transmitting module in a phased array radar system. The arrangement comprises an operational amplifier, which compares the voltage ... | 09/26/1989 |
| 4870375 | Disconnectable microstrip to stripline transition The invention relates to a microstrip to stripline transition which achieves good electrical performance and permits easy, solderless disconnection. The upper portion of the stripline is omitted permitting a flying lead bonded to the microstrip conductor,... | 09/26/1989 |
| 4868457 | Ceramic lamp end closure and inlead structure The life and performance of high pressure sodium vapor lamps using double wire ceramic seals and no exhaust tube is improved by an end closure and inlead structure which prevents condensation of sodium-mercury amalgam on sealing frit. One end of the arc t... | 09/19/1989 |
| 4867694 | Safety electrical receptacle An electrical receptacle is provided with a shutter mechanism to block spurious insertion of a foreign object through one of the receptacle slots short of the receptacle power circuit contacts. This mechanism includes either one or two slides supported fo... | 09/19/1989 |
| 4868458 | Xenon lamp particularly suited for automotive applications Disclosed is a xenon lamp used for lighting applications and which is particularly suitable for automobile applications such as headlamps. The benefits of such usage, relative to incandescent lamps commonly employed for automotive forward lighting applica... | 09/19/1989 |
| 4868718 | Forward illumination lighting system for vehicles A lighting subsystem is disclosed that uses optical devices to alter, the actual or apparent optical position of the ends of optical fibers coupled to a high intensity light source so as to provide all of the forward illumination needs for a vehicle. In o... | 09/19/1989 |
| 4867693 | Safety electrical tap An electrical power tap is provided with at least one shutter mechanism to block spurious insertion of a foreign object through one blade slot short of the power circuit contacts of an adjacent pair of plug receptacles. This mechanism includes a pair slid... | 09/19/1989 |
| 4866582 | Luminares having flexible light shields Luminaires, floodlights and spotlights having a light shield comprised of a flexible material are disclosed. The flexible light shield has a slit in its majority and presents a low wind loading factor when used for a high mast luminaire that is subjected ... | 09/12/1989 |
| 4864263 | Molded case circuit breaker latch and operating mechanism assembly An industrial rated molded case circuit breaker having an electronic trip circuit contained within the circuit breaker enclosure includes a reset spring in cooperation with the circuit breaker latch spring to insure manual reset of circuit breaker after a... | 09/05/1989 |
| 4860162 | Molded case and cover arrangement for current limiting circuit interrupters An insulating plastic case and cover for a circuit breaker having complementary extensions on the cover and recesses on the base side walls to transfer internal stress from the base side walls to the cover during circuit interruption.... | 08/22/1989 |
| 4860157 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 08/22/1989 |
| 4858056 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 08/15/1989 |
| 4857777 | Monolithic microwave phase shifting network A phase shifting network with multiple outputs between which a constant phase difference is maintained over a large frequency range. The configuration consists of a four branch all pass network which in turn consists of four similar all pass networks one ... | 08/15/1989 |
| 4857810 | Current interruption operating circuit for a gaseous discharge lamp A power supply system for discharge lamps employs a current interruption circuit to control current flow through a discharge lamp. A power switch is connected in series with the lamp and controls the current level in the lamp by controlling lamp current o... | 08/15/1989 |
| 4853597 | Rapid restrike metal halide lamp and a method of operating such A rapid restrike metal halide lamp and method of operating such a lamp are disclosed which are particularly suitable for sports stadium lighting applications. The rapid restrike metal halide lamp has an arc tube containing constituents which require a wav... | 08/01/1989 |
| 4851963 | Weatherproof air conditioning disconnect switch A weather-tight air conditioning disconnect switch has both plastic and metal enclosure components for low cost assembly. The exterior components include a metal case and cover whereas the interior non-electrical components are plastic-molded. One such mo... | 07/25/1989 |
| 4851969 | Optical control system particularly suited for infrequently activated devices An optical system that controls the operation of infrequently used electrically activated devices of a vehicle, such as hood or trunk latches or door locks, is disclosed. The optical control system comprises a storage device and an optical device. The sto... | 07/25/1989 |
| 4849581 | Adjustable joint for electrical busway The outer surfaces of adjoining electrical busway side frames are shaped to define a protruding rail extending along the vertical axis thereof. A pair of recessed channels formed within the inner surfaces of the side frames of an intervening busway joint ... | 07/18/1989 |
| 4847533 | Low pressure mercury discharge fluorescent lamp utilizing multilayer phosphor combination for white color illumination A low pressure mercury discharge fluorescent lamp is disclosed utilizing a particular phosphor blend deposited on a calcium haloapatite phosphor base layer to achieve white color lamp illumination efficiently with improved color rendition. The surface pho... | 07/11/1989 |
| 4845014 | Method of forming a channel A method of forming a variable width channel in a body comprises the steps of forming a surface grating having a photoresist layer thereon. The photoresist layer has a plurality of depressions and a planar photomask is then positioned over the photoresist... | 07/04/1989 |
| 4842533 | Thermally efficient splice joint for electrical distribution busway A thermally efficient joint for electrical power distribution busway electrically connects between adjacent busway sections. Each busway joint includes a modular assembly containing spaced metallic splice plates separated by corresponding insulating plate... | 06/27/1989 |
| 4843359 | Molded case circuit breaker handle for automated assembly A circuit breaker operating handle formed from a plastic composition includes a handle access post and a curvilinear handle skirt. A pair of opposedly positioned detent members are integrally-formed on the surface of the handle skirt opposite the handle a... | 06/27/1989 |
| 4839565 | High pressure double wall sodium arc tube and methods of operating such A high intensity discharge metal vapor lamp comprising an arc tube having an inner chamber vented to the arc tube and disposed therein is disclosed. The combination of the arc tube and inner chamber being of a double wall construction confines the arc con... | 06/13/1989 |
| 4839559 | Radiant energy incandescent lamp An electric incandescent lamp for selective radiant energy distribution is disclosed which employs a reflective film for improved efficiency of the lamp operation. Said lamp further employs a tungsten filament extending the length of its elongated lamp en... | 06/13/1989 |
| 4837532 | MMIC (monolithic microwave integrated circuit) voltage controlled analog phase shifter The invention relates to a voltage controlled analog phase shifter for operation at millimeter and microwave wavelengths using MMIC (Monolithic Microwave Integrated circuit) fabrication techniques. The phase shifter is formed of an artificial transmission... | 06/06/1989 |
| 4835841 | Method of making a coil assembly Coil bobbins having flanged coil support portions provided with outboard terminal housings projecting beyond the flange rim and defining inwardly extending terminal-receiving cavities. The end walls of the housings are slotted to allow a wire to pass thro... | 06/06/1989 |
| 4835842 | Method of assembling a molded case circuit breaker operating mechanism A circuit breaker operating mechanism for automated assembly finds application within circuit breakers of different ampere ratings. The circuit breaker contacts are opened and closed by means of a roller connected to the circuit breaker operating handle t... | 06/06/1989 |
| 4835439 | Increasing the oxidation resistance of molybdenum and its use for lamp seals The life of electric lamps exposed to an oxidizing environment at elevated temperature and having hermetic seals between molybdenum and a vitreous material is substantially increased by applying alkali metal silicate to the surface of that portion of the ... | 05/30/1989 |
| 4833563 | Molded case circuit breaker actuator-accessory module An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unti cover protects the acces... | 05/23/1989 |
| 4833576 | Aluminum phosphate cement compositions and lamp assemblies containing same This invention relates to aluminum phosphate refractory cement compositions which comprise a mixture of aluminum phosphate containing excess phosphoric acid, relatively small particle size alumina and a mixture of relatively medium and coarse particle siz... | 05/23/1989 |
| 4831221 | Molded case circuit breaker auxiliary switch unit An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the acces... | 05/16/1989 |
| 4827089 | Molded case circuit breaker interlock arrangement Molded case circuit breakers connected to two different sources of power within an industrial application are interlocked to prevent one circuit breaker from being turned on while the other circuit breaker is already on. The circuit breakers include a mol... | 05/02/1989 |
| 4825220 | Microstrip fed printed dipole with an integral balun A microstrip fed printed dipole with an integral balun is disclosed, fabricated upon a planar dielectric substrate by patterning metallizations disposed on the two surfaces of the substrate. In the arrangement, the ground plane of the unbalanced microstri... | 04/25/1989 |
| 4820178 | Outlet box for electric busway system Molded plastic outlet boxes are attached to an electric busway power distribution system at each location along the system where the bus bar conductors are provided with plug-in stabs. Slotted openings arranged through a top of the outlet box are centered... | 04/11/1989 |
| 4816791 | Stripline to stripline coaxial transition The invention relates to a transition between stripline transmission lines that is efficient at microwave frequencies and readily fabricated, and which may be used to achieve cross-overs in stipline circuits. The transition includes a coaxial section placed be... | 03/28/1989 |
| 4814712 | Test kit for a circuit breaker containing an electronic trip unit A test kit for a digital and analog electronic circuit breaker determines the calibration and overcurrent response of the circuit breaker when connected within an electric power circuit. The test kit simulates an overcurrent condition and provides verific... | 03/21/1989 |
| 4811172 | Lighting systems employing optical fibers A lighting system particularly suited for aerodynamically styled automobiles and aircraft is disclosed. The lighting system emits light from a strip arranged across a vehicle such as the automobile. The lighting system may comprise various subsystems find... | 03/07/1989 |
| 4810932 | Tungsten-halogen incandescent and metal vapor discharge lamps and processes of making such Flush and pump flush processes yielding light sources for incandescent and metal vapor discharge lamps are disclosed. The flush and pump flush processes also yield lamps that are particularly suitable for deposition of a reflective coating on its outer su... | 03/07/1989 |
