Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5126638 | Coaxial pseudospark discharge switch A high power pseudospark switch (40) utilizes a coaxial cylindrical electrode geometry to provide a large number of pseudospark discharge channels (60) in a compact space. The coaxial cylindrical electrode geometry includes a hollow cylindrical anode (52)... | 06/30/1992 |
| 5117160 | Rare gas discharge lamp A phosphor layer is coated on an inner wall of a tubular glass bulb. A predetermined amount of a rare gas containing xenon gas as a main component thereof is sealed and enclosed in the tubular glass bulb. A pair of belt-shaped electrodes are formed on an ... | 05/26/1992 |
| 5107187 | High voltage protection resistor A protection arrangement for a high voltage tube includes a low inductance disk resistor connected in series with the anode of the tube. When an electrical discharge occurs within the tube, the increased anode current flows through the resistor which abso... | 04/21/1992 |
| 5063333 | Discharge tube arrangement A discharge tube arrangement comprises a launcher and a discharge tube positioned in part within the launcher. When the launcher is energized with radio frequency (r.f.) power, surface waves are excited in the discharge tube which contains a fill. An elec... | 11/05/1991 |
| 5041765 | Negative glow discharge lamp device A negative glow discharge lamp device has a discharge container enclosing at least a rare gas, a hot cathode disposed in the discharge container and coated with a thermion radiation matter, and an anode located in a negative glow domain formed between the... | 08/20/1991 |
| 5038082 | Vacuum switch apparatus A vacuum switch apparatus has an electrically insulating vacuum enclosure which is evacuated to a vacuum degree of 2×10-2 Torr or less. One set of anode and cathode electrodes is arranged in the vacuum enclosure, having capacity which permits ... | 08/06/1991 |
| 5034661 | Rare gas discharge fluorescent lamp device The invention provides a rare gas discharge fluorescent lamp device which is long in life and high in brightness and efficiency. The lamp device comprises a rare gas discharge fluorescent lamp including a bulb having rare gas such as xenon, argon or krypt... | 07/23/1991 |
| 4990831 | Spark gap switch system with condensable dielectric gas A spark gap switch system is disclosed which is capable of operating at a high pulse rate comprising an insulated switch housing having a purging gas entrance port and a gas exit port, a pair of spaced apart electrodes each having one end thereof within t... | 02/05/1991 |
| 4980609 | Spark gap purge system A spark channel purge system for high pulse repetition frequency spark gap switches. A purge fluid having a liquid state and a gaseous state is caused to flow through a spark gap channel, at least a portion of the purge fluid passing through the spark cha... | 12/25/1990 |
| 4978891 | Electrodeless lamp system with controllable spectral output An electrodeless lamp system and method for providing light output having a controlled spectral distribution. A lamp having a fill which is not fully vaporized at the lamp operating temperature and which emits in a characteristic region of the spectrum is... | 12/18/1990 |
| 4970433 | Apparatus and method for tuned unsteady flow purging of high pulse rate spark gaps A spark gap switch apparatus is disclosed which is capable of operating at a high pulse rate which comprises an insulated housing; a pair of spaced apart electrodes each having one end thereof within a first bore formed in the housing and defining a spark... | 11/13/1990 |
| 4963796 | High-pressure sodium vapor lamp A high-pressure sodium vapor lamp with elevated color temperature, high light yield and improved color rendering properties for general illumination purposes uses sodium or sodium amalgam with mole fractions xNa >0.9 as the arc media. The lamp ... | 10/16/1990 |
| 4956579 | Plasma Display using a double-walled enclosure A gas containing envelope in the form of a double walled cylinder is closed at one end and open at its other end, with the double walls of the cylinder defining an enclosed gas discharge area. The double walls of the cylinder are made of a transparent die... | 09/11/1990 |
| 4902931 | Method and arrangement for mechanically moving of a magnetic field generating device in a cathode arc discharge evaporating device A method and device are provided to prevent grooves from occurring on a cathode surface of a cathode arc discharge evaporating device by adding a second movement to a first rotational movement of a magnetic field generator within the device, which enables... | 02/20/1990 |
| 4868463 | Method of operating a high-pressure discharge lamp A method of and a device for the operation of a high-pressure discharger lamp provided with a discharge vessel (3) which accommodates an ionizable filling and two electrodes (4, 5), between which electrodes in the operating condition the discharge takes p... | 09/19/1989 |
| 4780649 | Metal vapor lamp having low starting voltage A high-intensity discharge (HID) metal vapor lamp and starting apparatus includes a metal vapor lamp having an outer envelope containing a gas filled arc tube, the fill gas including xenon, the arc tube having a pair of spaced electrodes with a starting a... | 10/25/1988 |
| 4656398 | Lighting assembly A lighting assembly including a plurality of housing sections, a series of rib groups arranged circumferentially on the exterior of the housing sections, and a remote control assembly for selectively energizing tri-color diodes embedded in the ribs so tha... | 04/07/1987 |
| 4620135 | Electric circuit interrupting devices A thyratron utilizable as a circuit interrupting protective device is provided. The thyratron includes an apertured grid between anode and cathode which is divided transversely into two parts separated by an insulating layer. Both surfaces of the composit... | 10/28/1986 |
| 4524306 | Extra-high pressure mercury discharge lamp An extra-high pressure mercury discharge lamp comprising an end-sealed glass tube shaped to provide a long arc type tube, mercury contained in the both ends respectively of the glass tube, a pair of electrodes provided in the both ends respectively of the... | 06/18/1985 |
| 4481630 | Spark gap switch A spark gap switch is disclosed. The spark gap comprises opposite and adjacent electrodes and a trigger arrangement for triggering a discharge arc between the opposite and adjacent electrodes. The trigger arrangement includes a solid insulative material t... | 11/06/1984 |
| 4442383 | Plasma switch Apparatus for controlling the flow of high energy electrical pulses to a load using a switch having a plasma cathode which has rapid start up capability and requires no heater power.... | 04/10/1984 |
| 4370597 | Thyratron switch for narrow pulses Narrow pulse modulation (less than four nanoseconds) of millimeter wave ts will enable radar systems to achieve improved pattern recognition. The modulator has an outer cylindrical return shield surrounding a tetrode thyratron. An inner cylindrical shiel... | 01/25/1983 |
| 4366418 | Spectral source, particularly for atomic absorption spectrometry A spectral source comprises a lamp containing an anode and a cathode in an inert gas. The cathode has a hollow portion therein, and a opening at its side wall. The anode is positioned to face the opening of the cathode. The anode and cathode are different... | 12/28/1982 |
| 4297617 | Light producing device A device is provided comprised of an elongated flexible transparent thermoplastic tube which confines an electrically excitable gas, and an electrical supply which generates a pulsed direct current of high peak voltage and feeds said current to an electro... | 10/27/1981 |
| 4291255 | Plasma switch A plasma switch comprising a substantially evacuated chamber, a generally tubular cathode disposed within the chamber, an elongated anode disposed concentrically within and projecting from the opposite ends of the cathode, the opposite ends of the cathode... | 09/22/1981 |
| 4287456 | Portable fluorescent tube assembly having low voltage convenience outlet A portable fluorescent tube assembly is disclosed having a relatively low voltage electric convenience outlet associated with the assembly. Although higher than normally supplied voltages are needed to initiate the lighting of a fluorescent tube, these vo... | 09/01/1981 |
| 4260933 | Selective frequency optical generator An optical generator of an electrostatic field at light frequencies tuneable over the entire band of visible light frequencies including a pair of spaced electrodes in a gas filled tube having at least one absolute condenser plate adjacent one electrode, ... | 04/07/1981 |
| 4260934 | Electric device provided with a switch which is designed as a discharge tube The invention relates to an electric device provided with a switch which is constructed as a discharge tube which comprises at least two main electrodes and a reversible hydrogen getter. According to the invention the discharge tube contains a rare gas so that... | 04/07/1981 |
| 4259617 | Device for producing an electric discharge in a flat-plate transmission line A device for producing an electric discharge in a flat-plate transmission line. The device includes at least a first electrode (8), a second electrode (9) opposite the first electrode and passing through a hole (5) in the transmission line (1). With this ... | 03/31/1981 |
| 4229658 | Xenon light apparatus for supplying ultraviolet and visible spectra A handheld lamp is disclosed wherein the light source is a rapid pulse unconfined xenon arc tube containing more than three atmospheres of xenon gas pressure, and providing a selectable spectral output of ultraviolet, visible, or ultraviolet and visible w... | 10/21/1980 |
| 4176299 | Method for efficiently generating white light with good color rendition of illuminated objects Method and device for efficiently generating white light with good color rendition of illuminated objects. This is achieved by blending three different colors of light, namely, a green to yellow-green color of light, an orange to red color of light, and a... | 11/27/1979 |
| 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 |
| 4025752 | Apparatus for electrically perforating dielectric webs A system is provided for controlling the porosity of a web or film issuing from an electric spark perforating apparatus in accordance with an operator-set reference porosity regardless of variations in web speed, inherent web porosity, spark discharge ene... | 05/24/1977 |
