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| Number | Title | Issue Date |
| 4178059 | Aluminum base for electric lamps having a plastic coating for improved corrosion resistance A screw base for high intensity discharge lamps or for larger sizes of incandescent lamps utilizes a threaded aluminum shell coated with a thin film of polytetrafluoroethylene. The thin film is penetrated at points of maximum contact pressure with the soc... | 12/11/1979 |
| 4170746 | High frequency operation of miniature metal vapor discharge lamps Miniature high pressure metal vapor lamps containing mercury in a discharge volume of one cubic centimeter or less when operated at low frequencies have extremely high reignition voltages; the problem is compounded in metal halide lamps, particularly duri... | 10/09/1979 |
| 4170744 | Combination discharge-incandescent lamp with thermal switch control A combination lamp comprises a miniature arc tube, a standby filament and a thermal switch in a sealed vitreous envelope. The switch is connected in series with the filament, and the arc tube and the filament have separate inleads for external connections... | 10/09/1979 |
| 4170619 | Method and apparatus for dispensing salt powder as pellets in lamp making Highly purified metal halide salts are made into a frangible stick having uniformly spaced lines of weakness which permit the stick to be broken readily into cylindrical pellets of uniform size. The pellets are particularly useful to supply the vaporizabl... | 10/09/1979 |
| 4169875 | Method of producing a tubular body of polycrystalline alumina Increased optical transmission is provided for a body of light transmissive polycrystalline alumina having relatively uniform size equiaxed grains of alumina and which is essentially free of porosity and secondary phase material. A tube of the improved op... | 10/02/1979 |
| 4167773 | Photoflash lamp array having contoured sheet shield A photoflash lamp array comprising a plastic housing containing flash lamps having lead-in wires connected to a circuit board carrying switching circuitry for sequentially firing the flash lamps. A combined shield and flash indicator sheet is positioned b... | 09/11/1979 |
| 4166287 | Photoflash lamp array A photoflash lamp array of the FlipFlash type having connector tabs each having three terminals for connection to three contacts of a camera socket, two of the socket contacts being electrically connected together. The two terminals of the array intended ... | 08/28/1979 |
| 4161672 | High pressure metal vapor discharge lamps of improved efficacy High pressure discharge lamps containing a fill of mercury and metal halides, having a power input of 250 watts or below and useable for general illuminating purposes achieve higher efficacy by developing high end temperatures without excessively obstruct... | 07/17/1979 |
| 4161617 | Method and apparatus for electrically melting glass A method and apparatus is described for melting of a glass batch with electrical energy supplied by electrodes disposed in a vertically oriented melting chamber and which ameliorates the problems encountered when the raw batch blanket cannot be continuous... | 07/17/1979 |
| 4156271 | Reflector lamp A reflector lamp is disclosed in which the lamp includes an integral reflector with the filament of the lamp in a predetermined relation with the focus of the reflector.... | 05/22/1979 |
| 4155736 | Method of making a non-shorting photoflash lamp A glass support bead through which lead-in wires extend within a miniature type of flash lamp is shaped to have a raised narrow ridge extending between the lead-in wires so that when the lamp flashes the lead-in wires will melt back at the sides of the ra... | 05/22/1979 |
| 4151445 | Instant light lamp control circuit An instant light lamp combining a miniature arc tube and a standby filament in a sealed vitreous envelope is operated by a high frequency power supply combined with a filament control circuit. The power supply comprises transforming means including voltag... | 04/24/1979 |
| 4150317 | Polycrystalline alumina material Increased optical transmission is provided for a body of light transmissive polycrystalline alumina having relatively uniform size equiaxed grains of alumina and which is essentially free of porosity and secondary phase material. A tube of the improved op... | 04/17/1979 |
| 4149022 | Power control system for electrically melting glass A power control system to distribute the electrical energy being supplied to a glass melting furnace of the vertically oriented type wherein raw glass batch is fed at the top level of the melting chamber and molten glass withdrawn at the bottom level of s... | 04/10/1979 |
| 4147823 | Lamp glass envelope containing marking thereon A marking ink for glass and ceramic substrates is disclosed which can be deposited from a liquid dispersion and heat-cured rapidly to provide an insoluble adherent film. The adhesive binder for the marking ink is an inorganic cement produced by heat-react... | 04/03/1979 |
| 4146917 | Photoflash lamp array having reflective coating means Reflecting coating means are provided to replace the conventional reflector cavities surrounding each photoflash lamp of a multilamp photoflash array. A reflective adhesive coating for this purpose can be applied to each photoflash lamp around a portion o... | 03/27/1979 |
| 4146814 | Pinch and base structure for single-ended lamps A pinch and base structure is described in which the shaped end of a single-ended miniature lamp is securely engaged by a two piece, clip type base.... | 03/27/1979 |
| 4144418 | Voltage responsive switch A voltage sensitive switch is provided characterized by an irreversible change in resistance from a high resistance state greater than one megohm to a low resistance state less than one thousand ohms and comprising a mixture of substantially pure grade co... | 03/13/1979 |
| 4141036 | Solid state color camera The present invention relates to a solid state color camera in which a solid state imager is combined with a stripe filter and a color processor to obtain a three color electrical signal. The color filter is a composite filter consisting of a first sequen... | 02/20/1979 |
| 4139794 | Wedge-pin glass halogen lamp with transverse reference feature A glass halogen, miniature incandescent lamp comprises at least two conductive pins for electrical contact and a molded seal area for secure mechanical contact in a socket.... | 02/13/1979 |
| 4138623 | Lamp leads Dispersion strengthened copper leads are used for inner and/or outer leads in electric lamps.... | 02/06/1979 |
| 4138621 | Short-arc discharge lamp with starting device A short-arc discharge lamp having a pair of electrodes sealed through stems into a bulb, and an external starting device comprising an electrical conductor extending from the vicinity of the stem of one of the electrodes to the vicinity of the stem of the... | 02/06/1979 |
| 4138349 | Silicone lubricant compositions containing trischloroethyl-phosphite and/or bis-chloroethyl chloroethyl phosphonate The present invention relates to a silicone lubricant composed of an organopolysiloxane polymer and an effective amount of chlorinated phosphite or phosphonate. Such a lubricant composition is especially effective for lubricating soft metals such as coppe... | 02/06/1979 |
| 4137484 | Color improvement of high pressure sodium vapor lamps by pulsed operation High pressure sodium vapor lamps containing sodium or both sodium and mercury are raised in color temperature and improved in color rendition by pulse operation. During the pulse there is considerable enhancement and broadening of the sodium lines at 449,... | 01/30/1979 |
| 4136379 | Photoflash lamp array having reflective circuit board A photoflash lamp array comprising a plastic housing containing flash lamps positioned over a circuit board carrying switching circuitry for sequentially firing the flash lamps. The circuit board is made of an electrically insulating material having a lig... | 01/23/1979 |
| 4136378 | Photoflash lamp array having reflector at rear of transparent circuit board A photoflash lamp array comprising a plastic housing containing flash lamps positioned over a circuit board carrying switching circuitry for sequentially firing the flash lamps. The circuit board is made of transparent electrically insulating material hav... | 01/23/1979 |
| 4136375 | Shield connection in photoflash array Flash lamp lead-in wires are embedded in a circuit board and are in contact with circuit runs carried by the board. The end of one lead-in wire of at least one of the lamps extends from the circuit board and makes electrical contact against a sheet-like s... | 01/23/1979 |
| 4136298 | Electrode-inlead for miniature discharge lamps An electrode-inlead assembly comprises a small tungsten pin which is joined on axis to a fine molybdenum wire adapted to sealing through fused silica. The join is effected by a laser butt weld which permits a symmetric compact seal thereby making possible... | 01/23/1979 |
| 4135249 | Signed double precision multiplication logic The present invention relates to a multiplication logic for signed multiplication of two numbers to obtain a double precision product in two's complement notation, each quantity being in serial form with the least significant bit first. The multiplier may... | 01/16/1979 |
| 4133631 | Photoflash lamp array circuit board having radiation sensitive fuse elements Fuse elements are used with a circuit board to provide more reliable sequential firing in a flash lamp array. The circuit board includes the lamp firing circuitry along with radiation switches connected in said circuitry and the fuse elements cooperate wi... | 01/09/1979 |
| 4133023 | Flash lamp array having electrical shield A photoflash lamp array comprising a housing elongated vertically and containing elongated flash lamps lying horizontally and stacked vertically, the flash lamps having lead-in wires extending from ends thereof near the sides of the housing and connected ... | 01/02/1979 |
| 4131192 | Lamp parts feeding device having rotating reference frame A parts feeder is disclosed in which randomly grouped parts are stored, oriented and discharged at a uniform rate from a rotating or indexing spacer wheel fed by stepwise movable supply apparatus having the rotating spacer wheel as its frame of reference.... | 12/26/1978 |
| 4131588 | Low vapor transmission rate silicone composition A low moisture vapor transmission rate room temperature vulcanizable silicone composition comprising a silanol end-stopped diorganopolysiloxane with optionally a reinforcing or extending filler, an alkyl silicate crosslinking agent or in the alternative a... | 12/26/1978 |
| 4131589 | Low temperature transmission room temperature vulcanizable silicone compositions The present invention relates to a one-component room temperature vulcanizable silicone composition which has a low moisture vapor transmission rate which is accomplished by mixing with a silanol-terminated diorganiopolysiloxane Polymer from 75 to 150 par... | 12/26/1978 |
| 4131819 | Lead wires for incandescent lamp Lead wires having a specified stiffness, ie. stress/strain, characteristic are described for use in an incandescent lamp.... | 12/26/1978 |
| 4130599 | Silanol-free resins A silicone molding composition with improved thermal shock resistance having a plasticizing amount of a silicone resin comprising chemically combined RSiO3/2 units and R2 SiO units where the R to Si ratio may vary from 1.0 to 1.9 and... | 12/19/1978 |
| 4129031 | Immersible liquid densitometer An immersible liquid densitometer is disclosed employing an immersible vibrator. The vibrator includes one or two masses which are resiliently supported and which contain perforations which fill when the vibrator is immersed in the liquid. When the vibrat... | 12/12/1978 |
| 4128890 | Integrated arithmetic unit and digital networks using the unit The invention relates to an arithmetic unit fabricated by large scale integration techniques and to an improved digital network of increased accuracy in which the unit finds application. The integrated circuit comprises an initial summing means, rounding ... | 12/05/1978 |
| 4128864 | Sealed beam lamp unit An improved pressed glass lens member for a sealed beam lamp unit is provided to include an outer sealing rim of varying thickness to compensate for thermal contraction of the lens member when molded in a predetermined manner. Specifically, the ordinary w... | 12/05/1978 |
| 4128858 | Multiple flashlamp system A multiple photoflash system is provided which employs a high voltage type flashlamp construction, including a shorting primer material. The primer material is converted to a conductive residue upon ignition of flashlamp to provide a short circuit path be... | 12/05/1978 |
