Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7107676 | One piece foliated leads for sealing in light sources Manufacturing equipment and manufacturing process steps that improve upon prior art processes for the manufacturing of filament tube and arc tube light sources, their components and subassemblies, and lamps employing said light sources. A double ended, tipless filam... | 09/19/2006 |
| 6812404 | Feedthrough device having electrochemical corrosion protection Feed through assemblies and methods for their manufacture are provided. The feedthrough assemblies include a ferrule, an insulating material contacting the ferrule, and a terminal extending through the ferrule and having first and second areas separated by an area c... | 11/02/2004 |
| 6674001 | Solder glass and electrical device employing same A solder glass which has, by weight: about 60 to 67% Sb2 O3 ; about 27 to 32% B2 O3 ; and from greater than 0 to 10% ZnO. The glass has a softening point between 388 and 466° C., depending on the ZnO content. T... | 01/06/2004 |
| 6307150 | Vacuum seal for FEA's A vacuum seal suitable for use with field emission arrays is described. This seal has high reliability because the expansion coefficients of the metal and the glass are closely matched. Materials traditionally used for cathode and gate lines continue to b... | 10/23/2001 |
| 5277639 | Arc tube electrode assembly and method for manufacturing same An electrode assembly for an arc tube which is free from the difficulty that tearing of a foil occurs in pinch-sealing the arc tube. One end portion of an electrode bar is overlapped with a molybdenum foil, and the electrode bar is connected to the molybd... | 01/11/1994 |
| 4851733 | Electric lamp having a metal foil with a convexly and concavely curved surface An electric lamp has elongated metal foils as a part of the current conductor lead-throughs. Each metal foil has major surfaces which meet one another along each opposing side edge of the foil at an acute angle. The metal foil has a cross-section transver... | 07/25/1989 |
| 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 |
| 4755712 | Molybdenum base alloy and lead-in wire made therefrom A lead-in wire for use in an election lamp formed of molybdenum (undoped or doped with small amount of potassium and silicon) containing small amount of yttrium oxide and molybdenum boride is disclosed.... | 07/05/1988 |
| 4703221 | Electric lamp and method of making An electric lamp including a glass envelope having at least one conductive foil hermetically sealed within the press-sealed end portion thereof, the foil being electrically connected at one end to a side rod support wire which projects within the envelope... | 10/27/1987 |
| 4587454 | Incandescent lamp with improved press seal An improved electric lamp including an envelope of high silica glass material having a press sealed end wherein there is embedded a thin molybdenum foil which in turn forms part of the lamp's lead-in wire assembly. Crack formation in the area of the inter... | 05/06/1986 |
| 4531074 | Electrical current inlet particularly for discharge tubes of high pressure discharge light sources Electrical current supply terminal, especially for discharge tubes of light sources having a high pressure gas discharge. The invention is concerned with an electrical feed through, especially for discharge tubes of light sources having high pressure gas disch... | 07/23/1985 |
| 4521641 | Solder glass and electrical device employing the same A solder glass comprised of about 65 weight percent Sb2 O3 ; about 30 weight percent B2 O3 and about 5 weight percent V2 O5. The glass is black and extremely visible when employed as a molt... | 06/04/1985 |
| 4493944 | Solder glass and electrical device employing same A solder glass comprising, by weight, about 65% Sb2 O3 ; about 30% B2 O3 ; and about 5% PbO. The glass is molten at about 350° C. and can be employed as a molten seal in electrical devices such as tungsten-halo... | 01/15/1985 |
| 4492814 | Solder glass and electrical device employing same A solder glass comprising, by weight, about 65% Sb2 O3 ; about 30% B2 O3 ; and about 5% Bi2 O3. The glass is molten at about 350° C. and can be employed as a molten seal in electrical devi... | 01/08/1985 |
| 4254300 | Electric lamp In electric lamps having a lamp envelope (20) of a type of glass containing at least 95% by weight of SiO2, the current leadthrough conductors (22, 23) usually consist of molybdenum foils to which internal (26, 27) and external (24, 25) current... | 03/03/1981 |
| 4254356 | Inlead and method of making a discharge lamp The inlead for the electrode sealed into a quartz arc tube has a foil portion which is stiffened by reversely folded lateral edges. The folds overlap the tapering region of greater stiffness where the foil portion joins the end portions. In making a disch... | 03/03/1981 |
| 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 |
| 4110657 | Lead-in seal and lamp utilizing same A lead-in seal of the type having a metal foil seal member sealed into an envelope, comprising a relatively narrow intermediate foil tab member connected between the foil seal member and a conductor. The result is reduced stress in the seal and less likel... | 08/29/1978 |
| 4110656 | Method for mounting electrodes in high pressure sodium lamps and resulting article A method for securing an electrode to the electrode holder in a high pressure sodium discharge lamp and resulting article, which method, involves spot welding a thin niobium, tantalum or titanium wire across the flattened end of the electrode holder and t... | 08/29/1978 |
| 4101798 | Electric lamp with a torpedo shaped conductor tip External cylindrical current conductors of an electric lamp are torpedo-shaped at the end which is welded to a metal foil in a pinch seal of the lamp vessel. The torpedo-shaped part has a length which is at least equal to the diameter of the cylindrical p... | 07/18/1978 |
| 4069437 | Infrared lamp with heat conductive cap assembly and fixture An infrared tubular incandescent lamp provided with a cap assembly and current supply lead at each pinched end of the lamp vessel. The caps are not electrically conductive and are heat sinks. Each cap assembly includes a formed ceramic member enclosed by ... | 01/17/1978 |
| 4015165 | Electric lamp with molybdenum contact pins surrounded by non-corrosive metal sleeves Electric lamps having a quartz glass lamp envelope frequently have outer current conductors of molybdenum because this metal has a coefficient of expansion which corresponds best to that of quartz glass. Because molybdenum is sensitive to oxidation the cu... | 03/29/1977 |
| 3959682 | Electric lamp Electric lamp having a hermetically sealed gas-filled hard-glass or vitreous-silica lamp envelope provided with a current lead-in which is sealed into a portion of the lamp envelope and comprises a foil mainly consisting of molybdenum and a current supply... | 05/25/1976 |
| 3956660 | Electric incandescent lamp A halogen incandescent lamp comprises a lamp envelope which is sealed by one or two pinch seals in which one or more foils and conductors welded thereto are sealed and in which pinch seals means are present which form a cavity adjoining the points of the ... | 05/11/1976 |
