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| Number | Title | Issue Date |
| 7719174 | Surface mounting discharge tube has soldering tapers formed at peripheral edges of electrode side surfaces that seal and project outwardly from opposite ends of cylindrical ceramic envelope A surface mounting discharge tube, comprise of a cylindrical ceramic envelope sealed at its two ends by side surfaces of electrodes, designed to be directly soldered on to a mounting board, where the electrodes at the two ends are rectangular, project outward radial... | 05/18/2010 |
| 7218051 | Discharge tube A discharge tube includes a cylinder having first and second end planes, first and second discharge electrodes coupled to the respective first and second end planes, the first and second discharge electrodes having respective upper and lower discharge planes forming... | 05/15/2007 |
| 7102289 | Discharge tube A discharge tube is disclosed that includes: an airtight tube having first and second end surfaces each including a metallized surface; first and second discharge electrodes joined to the respective metallized surfaces; and multiple trigger lines formed on the inner... | 09/05/2006 |
| 7053536 | Gas discharge tube having electrodes with chemically inert surface A new gas discharge tube with end electrodes having chemically inert surfaces is disclosed. As the surfaces are resistant to the build-up of layers, such as oxide layers, a discharge tube according to the invention exhibits higher selectivity and better performance ... | 05/30/2006 |
| 6919883 | Charge characteristic compensating circuit for liquid crystal display panel A charge characteristic compensating circuit for a liquid crystal display panel for maintaining a charge characteristic of the liquid crystal display panel independently of ambient temperature change to prevent deterioration of images displayed. A plurality of liqui... | 07/19/2005 |
| 6750600 | Hall-current ion source In accordance with one specific embodiment of the present invention, a Hall-current ion source of the end-Hall type has an anode that is contoured with one or more recesses in the electron-collecting surface which have areas that are protected from the deposition of... | 06/15/2004 |
| 6566813 | Overvoltage protection device with concentric arcing horns An overvoltage protection device (1) with a first electrode (2) which has a first arcing horn (3), with a second electrode (4) which has a second arcing horn (5), with an air-breakdown spark gap (6) which is active between the arcing horns (3, 5), and wit... | 05/20/2003 |
| 6417604 | Low pressure gas discharge switch For a low-pressure gas discharge switch, at least two main electrodes are arranged at least a distance d from each other, the electrodes in an arcing chamber forming a cathode and an anode of a discharge path for the low-pressure gas discharge. The gas di... | 07/09/2002 |
| 6307308 | Low pressure gas discharge switch with particular electrode structure At least main electrodes for a low pressure gas discharge arranged at a distance from each other are present in such switches, the main electrodes forming a cathode and an anode of a discharge path in an interrupter chamber for the gas discharge which is ... | 10/23/2001 |
| 6194820 | Discharge tube having switching spark gap A discharge tube can continuously discharge at intervals of 2.5 ms in stable fashion in a high-temperature environment at 150° C. A discharge tube 10 comprises a pair of electrodes 14a, 14b with the discharge surfaces 16, 16 thereof disposed opposite to ... | 02/27/2001 |
| 6037715 | Spark switch having coaxial electrodes with increased electrode surface area exposure A geometry for a spark switch includes an inner electrode surrounded by an outer electrode. The placement of the inner electrode within the outer electrode substantially increases the exposed overlapping surface area of the electrodes. The increase in sur... | 03/14/2000 |
| 6025672 | Gas Discharge surge tube with specific trigger wires arrangement It is an object of the invention to provide a discharge tube in which the electrical insulating property between the discharge trigger wires is not deteriorated by the sputtering substance generated when discharge is conducted between the upper and the lo... | 02/15/2000 |
| 5671114 | Gas-filled overvoltage diverter In a gas-filled overvoltage diverter, the electrodes are coated with an activation compound and are located on an insulator. At least one axial ignition strip is disposed on the inner surface of the insulator. The inner surface of the insulator also has a... | 09/23/1997 |
| 5637957 | Cathode-anode spacer comprising a projection of a length limited relative to its distance to the cathode For use in vacuum between a cathode (21) and an anode (23) with avoidance of surface flashover resulting from a voltage supplied between the cathode and the anode, a dielectric spacer (25) has a side surface and a projection (27) protruded perpendicularly... | 06/10/1997 |
| 5569972 | Gas-filled lightning arrester having copper electrodes To achieve a contact with copper electrodes that discharges axially to a slight degree and is especially favorable from a manufacturing standpoint, a gas-filled lightning arrester with a ceramic insulator and copper electrodes is provided having a contact... | 10/29/1996 |
| 5563471 | Discharge tube This invention provides a discharge tube which is small and easy to manufacture, which prevents the discharge characteristics from being disturbed by a grounded body located nearby, and which makes creeping discharges unlikely to occur and at the same tim... | 10/08/1996 |
| 5491381 | Discharge tube A discharge tube which assures stabilized discharging, is reduced in overall size and easy to manufacture is disclosed. The discharge tube comprises a cylindrical envelope made of an insulating substance, discharge gas enclosed in the envelope, and a pair... | 02/13/1996 |
| 5383085 | Assembly for the discharge of electric overvoltages As a known "back-up device" for a gas-filled over-voltage arrester, a voltage-dependent resistor (6) is arranged centrally in a housing with the over-voltage arrester (1). The varistor (6) can, in this connection, be sealed with a moisture-repelling subst... | 01/17/1995 |
| 5336970 | Gas tube protector A gas tube protector includes a new coating for the electrodes. The coating, which eliminates the need for conditioning the electrodes prior to using or testing the protector, includes barium titanate and titanium.... | 08/09/1994 |
| 5103135 | Gas-discharge surge arrester A gas-discharge surge arrester that can be manufactured at a low cost and suitable for automatic bulk processing. The surge arrester includes an insulator which comprises a small ceramic tube. A tin coating is applied to the electrodes, and an annular pro... | 04/07/1992 |
| 5091819 | Gas-electronic switch (pseudospark switch) The switch has a gas discharge chamber, in which two electrodes, namely a cathode (11) and an anode (12), are contained, which are spaced a distance (d) apart and are separted from each order by an electrically insulating wall (9a) made of ceramic materia... | 02/25/1992 |
| 4827370 | Enclosure for electric device, in particular for surge arrester, including a molded, electrically insulating envelope An enclosure for electric device, in particular for surge arrester, comprises an outer, cylindrical envelope and an inner wall both made of electrically non conducting materials. One of the ends of the envelope is closed while the other is open. An electr... | 05/02/1989 |
| 4707762 | Surge protection device for gas tube A surge protection device which provides multiple back-up and tends to fail closed circuit or shorted is disclosed. The primary surge protection is provided by a gas break-down tube set to operate at one voltage level. A secondary or back-up surge protect... | 11/17/1987 |
| 4680665 | Gas discharge arrester A gas discharge arrester in which annular bands are attached to the inside surface of the arrester. The spacing between the bands is equal to or somewhat greater than the width of the interelectrode gap. Each band is in contact with its associated electro... | 07/14/1987 |
| 4672259 | Power spark gap assembly for high current conduction with improved sparkover level control A power spark gap for protection of electrical equipment against overvoltages and having high current handling capacity is provided consisting of two carbon electrodes each of a hemispherical configuration disposed within a porcelain housing and with vent... | 06/09/1987 |
| 4665337 | Gas discharge arrester and method of manufacture For the reduction of the work function of the electrodes, gas discharge arresters contain an activator which contains, for example, an alkali metal or nickel. Getter materials, for example barium aluminum, serve the purpose of gettering of gases which can... | 05/12/1987 |
| 4538088 | Spark gap device A spark gap device adapted for a direct, low-inductance connection to a foil strip transmission line having a pair of foil conductor strips located on the opposite sides of an insulator strip. The device includes a pair of electrodes spaced a predetermine... | 08/27/1985 |
| 4486805 | Lightning arrester with improved spark gap structure An improved arc gap structure for a lightning arrester comprises first and second annular electrodes concentrically arranged relative to one another. The first electrode has a generally cylindrical inner surface which tapers to a smaller diameter toward o... | 12/04/1984 |
| 4484247 | Nonfragmenting station arrester A lightning arrester of the station class is equipped with a ceramic housing protective heat shield liner formed of an ablative material capable of giving off a gas when subjected to a fault current arc. The evolved gas contributes to a rapid internal pre... | 11/20/1984 |
| 4404614 | Surge arrester having a non-fragmenting outer housing A surge arrester including an outer elongated housing and an inner liner is disclosed herein. The outer housing is constructed of a material which will not break as a result of internal electrical arcing, specifically a relatively resilient, electrically ... | 09/13/1983 |
| 4393433 | Overvoltage protector for telephone lines An overvoltage or surge protector, particularly for telephone lines, has two electrodes in opposition in a housing. The gap between the inner ends of the electrodes is set by a layer of dielectric material on the center portion of one or both end surfaces... | 07/12/1983 |
| 4349855 | Lightning arrester A lightning arrester comprises a non-linear resistor as a lightning arrester element and an insulator holding the non-linear resistor in one body without a gap to prevent deterioration of the non-linear resistor caused by moisture.... | 09/14/1982 |
| 4345295 | Arrester with spark gap In an arrester for limiting overvoltages in a low voltage power system and for coupling conductors which are normally resistively separated from one another for lightning protection, which arrester includes at least two electrodes spaced apart to define a... | 08/17/1982 |
| 4340924 | Grading means for high voltage metal enclosed gas insulated surge arresters Capacitance grading is provided within gas insulated lightning arresters containing stacked zinc oxide varistors by means of a grading ring electrically connected to the line terminal or, for arresters of the higher voltage ratings, by means of a pluralit... | 07/20/1982 |
| 4287548 | Surge voltage arrester with reduced minimum operating surge voltage A surge voltage arrester has a gas-filled housing in which main electrodes are disposed opposite one another, and supported by a tubular insulating member on whose interior side at least one ignition strip extends over a portion of the tube length. There ... | 09/01/1981 |
| 4188561 | Station protector spark gap applique An applique or attachment for a station protector spark gap device includes an insulated enclosure housing a gas tube spark gap device together with fail safe shorting means located circumferentially therearound. Auxiliary gaps in parallel with the gas tu... | 02/12/1980 |
| 4136299 | Lightning arrester device A grounded cylindrical metallic housing is hermetically closed at one end and an electric insulation hermetically extends through the other closed end of the housing to form in the housing a space filled with an electrically insulating gas. An arrester el... | 01/23/1979 |
| 4132915 | Spark gap protector A spark gap protector includes a gas tube spark gap device received in a supporting base. A failsafe device for permanently shorting the spark gap protector to ground after an extended discharge includes a spring biased cage and a solder pellet. An extend... | 01/02/1979 |
| 4126808 | High voltage two stage triggered vacuum gap A triggered vacuum gap tube includes an evacuated envelope with high voltage terminals at opposite ends of the envelope. The envelope is divided into two chambers by a mid-plate therein having a centrally located aperture therethrough. The first of the tw... | 11/21/1978 |
| 4107567 | Surge protector A surge protector or arrester for providing surge protection for relatively low voltage or secondary equipment, circuits and systems includes a vertically stacked, parallel arrangement of two, independent, spark gap and valve block assemblies, the compone... | 08/15/1978 |
