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| Number | Title | Issue Date |
| 7180076 | Photoionization detectors, ionization chambers for use in photoionization detectors, and methods of use of photoionization detectors A photoionization detector includes a housing, electrical contacts within the housing and an easily removable and replaceable photoionization chamber within the housing. The photoionization chamber includes a cathodic electrode and an anodic electrode which may be c... | 02/20/2007 |
| 7164223 | Multi-tube fluorescent discharge lamp A multi-tube fluorescent discharge lamp, which is constructed of multiple glass tubes of different caliber in coaxial structure, the both sides of the inner most tube are connected to a cathode respectively, by isolating, perforating and blocking the discharge path,... | 01/16/2007 |
| 6963158 | Mount assembly for discharge lamps A mount assembly (10) for an arc discharge vessel has a glass stem (12) having a longitudinal axis (14) that includes a flare (16) with a barrel portion (18) and a seal portion (20) containing at least two relatively rigid s... | 11/08/2005 |
| 6914350 | Switching arrangement A solid state switching arrangement includes a transmission line which acts as a primary transformer loop and acts with secondary windings carried by switching modules to apply triggering signals to the switches. The arrangement may include greater than sixty module... | 07/05/2005 |
| 6670763 | Display lamp with reflector having IR-reflective coating A low voltage display lamp is provided for use in standard threaded lamp sockets. The lamp has an IR-reflective layer, preferably gold, coated on the convex side of the reflector to reflect infrared radiation (IR) away from the ballast to reduce the balla... | 12/30/2003 |
| 6621195 | Spot light-source device excited by electromagnetic energy To provide a spot light-source device whose discharge envelope has high pressure resistance and that emits high brightness as a spot light source, a spot light-source device excited by electromagnetic energy has a lamp that with a discharge envelope made ... | 09/16/2003 |
| 6617513 | Lamp rod assembled device for assembling inserting rod into wire box A lamp rod assembled device for assembling an inserting rod into a wire box comprises a retaining seat installed on a via hole at a lateral side of the wire box and an inserting rod inserted into the wire box. A polygonal though hole is formed in the enga... | 09/09/2003 |
| 6489560 | Positioning device of lamp rod used in ceiling lamp of wire box A positioning device of a lamp rod used in a ceiling lamp of a wire box comprises a retaining seat fixed to a via hole of the wire box and an inserting rod inserted into the retaining seat. An inserting portion exactly passes through the via hole. A top s... | 12/03/2002 |
| 5532543 | High density discharge lamp with pinched-on containment shield An electric discharge lamp has a discharge vessel including pair of opposing planar seals each having a pair of major faces and a pair of minor, side faces. A containment shield surrounds the discharge vessel and includes a glass sleeve and a helically co... | 07/02/1996 |
| 5402033 | High pressure discharge lamp having clamped-on containment sleeve The electric discharge lamp has a discharge vessel, which is mounted in an outer bulb. A containment shield surrounds the discharge vessel and includes a glass sleeve and a helically coiled wire about the sleeve. Electrically isolated clamping leads exten... | 03/28/1995 |
| 5331249 | Discharge tube A discharge tube of the type wherein a voltage is applied across a pair of electrodes to cause a discharge between the anode side electrode and the cathode side electrode. In the new discharge tube, opposing end portions of the pair of electrodes are form... | 07/19/1994 |
| 4963790 | Low wattage metal halide discharge lamp A low wattage metal halide discharge lamp includes an evacuated envelope wherein is disposed a heat loss reducing member having an arc tube therein and means for interrupting the circuit for the current flow which sustains the electrolytic sodium loss pro... | 10/16/1990 |
| 4912360 | Lamp with two internal capsules A double filamented lamp with one filament being a back up for the other filament may be formed with two internal capsules enclosed in a single exterior sheath. Each filament is securely positioned away from, and protected from the activity of the other f... | 03/27/1990 |
| 4610498 | Polarized threaded lamp base A polarized screw base assuring constant angular orientation of a lamp has a polarizing locator for engaging a stop in a mating socket. The locator consists of a length of metal rod welded lengthwise on the crest of a base thread with multiple spot welds ... | 09/09/1986 |
| 4602185 | Arc tube support of gaseous-discharge lamp This invention relates to electrical engineering. An arc tube support of a gaseous-discharge lamp is made from one piece of bent wire and has a central straight portion (1) placed along the arc tube (4) and loop-like end portions (2) embracing the sealed-in en... | 07/22/1986 |
| 4370607 | Static high voltage switch usable in a switchable high voltage D.C. generator A static high voltage switch which can be constructed in miniaturized form and having a high degree of reliability, it comprises a bridge of switches, such as thyristors, each controlled by a secondary winding of a transformer whose single primary winding... | 01/25/1983 |
| 4341975 | Jacketed lamp having transversely mounted arc tube Transverse mounting of the arc tube within the lamp jacket is effected through a mount featuring a hinged attachment of the arc tube between divergent support rods which serve also as electrical connectors to the electrodes. During manufacture the hinges ... | 07/27/1982 |
| 4318163 | Protective shield for ultraviolet lamps A protective shield for ultraviolet emiting fluorescent tubes including a pair of end caps through which electrical contacts extend. The shield is formed of a flexible plastic material which is transmissive to electromagnetic radiation in the ultraviolet ... | 03/02/1982 |
| 4285032 | Tubular incandescent lamp A tubular incandescent lamp which comprises an elongate transparent envelope; and a plurality of small lamps linearly arranged and extending lengthwise through the envelope, each of said small lamps containing a helically coiled filament and wherein the d... | 08/18/1981 |
| 4149109 | Location-sensitive proportional counter tube A location- or positionally-sensitive proportional counter tube of high resolution having a trough-shaped cathode in a counting chamber. A resiliently elastic wire forming the anode extends longitudinally through the counting chamber. Suitable fastening a... | 04/10/1979 |
| 3942859 | Electrical conductor with light indicating means A safety power conductor is disclosed in which the conductor includes light-emitting means in electrical communication with the conductor to signal the location of the conductor and the presence of an electrical potential in the conductor with respect to ... | 03/09/1976 |
