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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7671545 | Device and method for operating a high-pressure discharge lamp The invention is a device for operating a high-pressure gas discharge lamp, which is provided with a starting auxiliary electrode, with a current of alternating polarity. The device has a series resonance circuit with a resonance inductive resistor, through which fl... | 03/02/2010 |
| 7413845 | Elimination of write head plating defects using high activation chemically amplified resist Methods of forming a component of a thin film magnetic head and improving the plating of a component of a thin film magnetic head are provided. The methods include the use of a high activation energy chemically amplified photoresist (CARS) that is contacted with a l... | 08/19/2008 |
| 7324319 | Surge protection device A surge protection device includes a first electrode and a second electrode. An air breakdown spark gap is between the second and first electrodes, an arc being formed upon an ignition of the air breakdown spark gap. A series arrangement of a potential dividing elem... | 01/29/2008 |
| 7038383 | Ignition aid for high intensity discharge lamp An arc tube for a high intensity discharge lamp comprising a translucent body defining a discharge space and including spaced-apart electrodes; an arc generating and sustaining medium within the discharge space; and a starting aid contained within the discharge spac... | 05/02/2006 |
| 6965629 | Method and apparatus for initiating a pulsed arc discharge for nanopowder synthesis A nanopowder synthesis system having an autofuser device which obviates the need for external power switches, and which accommodates repeated discharges (of the order of 107) between ablating electrodes of precursor material at a high repetition rate (≧... | 11/15/2005 |
| 6924599 | Dielectric barrier discharge lamp with starting aid In order to improve the starting of a dielectric barrier discharge lamp it is proposed to provide elements for igniting an auxiliary discharge inside the exhaust tube (5) of the lamp. ... | 08/02/2005 |
| 6552502 | Light source device Light source device which includes a discharge lamp which contains at least 0.15 mg mercury per cubic millimeter of the volume of the discharge space, a pair of electrodes opposite one another to create the main discharge and spaced a distance from one an... | 04/22/2003 |
| 6420840 | Plasma column A plasma discharge display device comprises a generally columnar chamber with a pair of electrodes tangentially located at opposite ends of the chamber for ionizing gas in the chamber. The columnar chamber comprises a cylindrical portion interconnected wi... | 07/16/2002 |
| 6388391 | Operating method for a discharge lamp having at least one dielectrically impeded electrode The invention relates to a method for operating a discharge lamp, which has at least one dielectrically impeded electrode (2, 3), on a flyback converter, which applies periodically recurring voltage pulses to the discharge lamp (La1). If the discharge lam... | 05/14/2002 |
| 6242868 | Glow discharge apparatus having direct production of visible light from neon or xenon Glow discharge apparatus comprises a light-transmissive body (101) defining a cavity (102) containing neon or xenon gas. The glow discharge is powered by one or more electrodes (103) external to the cavity. The apparatus also comprises a secondary light s... | 06/05/2001 |
| 5994850 | Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween A switch for switching large currents and large charges includes an anode separated from a cathode with a cylindrical trigger electrode located around the anode and the gap. The cathode is of a metal such as zinc, cadmium, tin or magnesium. During operati... | 11/30/1999 |
| 5955846 | Discharge lamp lighting device and a method for lighting a discharge lamp A discharge lamp lighting device according to the present invention includes: a discharge lamp including an electrode; and a lighting circuit for lighting the discharge lamp, the lighting circuit being connected to the discharge lamp, wherein the discharg... | 09/21/1999 |
| 5747946 | Gas discharge lamps and systems A fluorescent discharge lamp has two glow mode electrodes wound around it in a helical fashion. One circuit drives the main electrodes at opposite ends of the lamp at high levels of brightness. Another circuit drives the glow mode electrodes at low levels... | 05/05/1998 |
| 5420481 | Fluorescent lamp with wide range of luminous intensities An apparatus is provided for controlling the luminous output of a fluorescent lamp over a wide dimming range. The luminous output is controlled by controlling the lamp current, while the lamp is immersed in a lateral electrostatic field. The lamp and exte... | 05/30/1995 |
| 5418423 | Capacitively coupled trigger for pseudogap cold cathode thyratrons An improved gas discharge trigger for a pseudogap cold cathode thyratron. Electrical trigger pulses are capacitively coupled through the vacuum envelope wall (16) causing a gas discharge adjacent to the rear of the hollow cathode (26). Coupling apertures ... | 05/23/1995 |
| 5397965 | Device for operating a gas discharge lamp A device for operating a gas discharge lamp is disclosed which includes a voltage transformer preferably an inverse transformer, to whose output a bridge circuit is connected, with the lamp being disposed in the diagonal of the bridge. A component dispose... | 03/14/1995 |
| 5391960 | Cold cathode tube for generating light with uniform intensity along the tube A cold cathode tube in which an auxiliary electrode formed of an electric conductive material is provided on an outer surface of a cylindrical tube element so as to extend over substantially a half of the tube element from one end thereof to a location in... | 02/21/1995 |
| 5355053 | High pressure sodium lamp starting aid A starting aid for high pressure sodium vapor lamps eliminates the need to mechanically connect an ignition wire to the lamp frame. The starting aid employs an ignition wire which is slidably clipped directly to the arc tube at one end and which is connec... | 10/11/1994 |
| 5107183 | Discharging method and small fluorescent lamp using the discharging method A charging method within a glass tube using a direct current of low voltage is provided in order to obtain a small fluorescent lamp with a light emission of high luminance. Two distinct discharges are achieved through use of one negative electrode. The fi... | 04/21/1992 |
| 5055748 | Trigger for pseudospark thyratron switch The present invention concerns a method for triggering certain high voltage electronic, gas discharge switches that are a novel type of high power thyratron. In this invention, triggering of switches of the so-called "pseudospark thyratron" type (a type o... | 10/08/1991 |
| 4970440 | Orientation independent ignitron with grooved cathode An orientation independent ignitron (OII) has an anode, a cathode with a plurality of spaced grooves facing the anode, and a cooling mechanism which causes liquid metal vapor to condense as a film which is retained on the grooved cathode surface by surfac... | 11/13/1990 |
| 4962335 | Deuterium lamp voltage supply means A deuterium lamp starting circuit utilizing the arc-defining aperture cage of the lamp as the arc-starting electrode to enable the application of a positive, low starting voltage simultaneously with the application of the filament voltage. This positive, ... | 10/09/1990 |
| 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 |
| 4677343 | Sealed beam lamps A discharge lamp is provided with a starting aid in the form of a loop of conductive wire arranged around the discharge lamp arc tube and a novel spark gap. A conductive element is electrically connected between the loop and an insulating sleeve adapted t... | 06/30/1987 |
| 4668896 | Linear geometry thyratron The low pressure gas-filled thyratron is scalable in the long dimension. Internally the tube is formed as a tetrode, with an auxiliary grid placed between the cathode and the control grid. A DC or pulsed power source drives the auxiliary grid both to insu... | 05/26/1987 |
| 4665296 | Method of and apparatus for igniting a high-frequency torch to create a high-temperature plasma of high purity An ignition element for use in igniting a high-frequency plasma torch is ungrounded and displaceable. When a tip end of the ignition element is positioned in a location in a gas to be formed into a plasma, which flows under normal pressure, and a high-fre... | 05/12/1987 |
| 4661747 | Efficient electrical conversion switching tube suitable for inductive loads Disclosed is an electrical driving and recovery system for a high frequency environment. The recovery system can be applied to drive present day direct-current or alternating-current loads for better efficiency. It has a low-voltage source coupled to a vi... | 04/28/1987 |
| 4604554 | Triggered spark gap discharger A triggered spark gap discharger having a small auxiliary gap in the trigger pulse path. The auxiliary gap provides ultraviolet radiation to liberate electrons at the trigger probe and allow prompt firing of the trigger gap and primary gap, particularly i... | 08/05/1986 |
| 4592079 | Medical imaging device using triggered plasma cathode flash X-ray sources A medical imaging device employs a plurality of triggered plasma cathode flash X-ray sources, each of which has an axially extending round anode rod, a cathode, and a trigger electrode. The application of a trigger pulse between the electrode and the cath... | 05/27/1986 |
| 4370539 | Device for the manual start-up of a plasma torch Device for the manual start-up of a plasmotron. The device has a spring biased plunger which constitutes an electrode which selectively bridges the anode and cathode of the plasmotron and creates an arc between the anode and cathode when it is released so... | 01/25/1983 |
| 4010397 | Flashlamp triggering arrangements for pressurized gas cooled lasers Series and shunt flashlamp triggering arrangements are disclosed wherein an electrically conductive patch is intimately bonded to a portion of the outer lateral surface of the flashlamp housing extending over a portion of the high voltage electrode and te... | 03/01/1977 |
| 3939379 | High energy gas discharge switching device High energy switching device utilizing a gas discharge tube with input and output electrodes connected electrically in series with a source and a load. A control element is connected to the input electrode, and a trigger signal is applied to the control e... | 02/17/1976 |
