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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 4977354 | Electrodeless low-pressure discharge lamp Electrodeless low-pressure discharge lamp having a glass lamp vessel (1) which is sealed in a gaas-tight manner and which is filled with at least a metal vapor and a rare gas, said lamp having a first winding (6) which is connected to a high-frequency ele... | 12/11/1990 |
| 4954748 | Thyratron gas discharge device with magnetic field for improved ionization In a thyratron gas discharge device, magnetic material is located coaxially with the anode to produce a magnetic field between the anode and cathode which is substantially parallel to a discharge established between them. This causes electrons emitted fro... | 09/04/1990 |
| 4949047 | Segmented RFQ accelerator A segmented radio-frequency quadrupole accelerator (10) having a top segment (12), a bottom segment (14), a first side segment (16) and a second side segment (18), each segment having an elongated vane portion (20) arranged in diametrically-opposed pairs ... | 08/14/1990 |
| 4933594 | Electron collector for electron tubes According to the invention, the conducting collector wall (23) on which the electrons are collected is surrounded by a coil winding (36) which is supplied with a periodically varying current, creating a slightly divergent axial magnetic field whose amplit... | 06/12/1990 |
| 4931702 | Electric-arc device An electric-arc device has two aligned electrodes separated by an arc gap. The position of an electric arc in the arc gap is stabilized by using at least two coils, each made as a rectangular loop and bent around a cylindric surface. The coils are mounted... | 06/05/1990 |
| 4924138 | Device comprising a vacuum ion arc source A vacuum arc ion device having a plasma-emissive cathode and an anode, each being energized with suitable potentials, and having the further structure for eliminating micro drops of molten material which micro drops are emitted for certain materials durin... | 05/08/1990 |
| 4894589 | Starting means, with piezoelectrically-located capacitive starting electrodes, for HID lamps A pair of starting electrodes are provided for an electrodeless high-intensity-discharge lamp of the type having an arc tube situated within the bore of an excitation coil and in the interior of which tube is to be provided a plasma arc discharge driven b... | 01/16/1990 |
| 4894590 | Spiral single starting electrode for HID lamps A single starting electrode is provided for an electrodeless high-intensity-discharge lamp arc of the type having an arc tube situated within the bore of an excitation coil and in the interior of which arc tube is to be provided a plasma arc discharge dri... | 01/16/1990 |
| 4894591 | Inverted Excitation coil for HID lamps A novel excitation coil for both starting and maintaining a plasma arc discharge within the envelope of an arc tube in an electrodeless HID lamp, has first and second solenoidally - wound coil portions, each having an axis substantially in alignment with ... | 01/16/1990 |
| 4886992 | Electron source with magnetic means The instant invention relates to an electron source which contains, in a low pressure chamber, an anode (A), a cathode (K) and means for applying a magnetic field (13). The cathode is constituted by an equipotential cavity (10) provided with an aperture (... | 12/12/1989 |
| 4855645 | Magnetron for microwave oven In a magnetron, anode vanes are radially arranged in an anode cylinder and fixed to the inner surface of the anode cylinder. A cathode is arranged along a tube axis in the anode cylinder. Pole pieces of dish like shape are fixed to openings of the anode c... | 08/08/1989 |
| 4812702 | Excitation coil for hid electrodeless discharge lamp An excitation coil, for stimulating a high-intensity-discharge plasma in an electrodeless discharge lamp, has at least one turn of a conductor arranged generally upon the surface of a toroid with a rhomboid or V-shaped cross-section, which is substantiall... | 03/14/1989 |
| 4734653 | Magnetic field apparatus for a particle accelerator having a supplemental winding with a hollow groove structure A magnetic field apparatus for a particle accelerator having a particle track having curved sections contains several magnetic field-generating windings, and at least one supplemental winding provided for focusing the electrically charged particles. The s... | 03/29/1988 |
| 4720660 | Projector lamp A projector lamp comprising a single ended metal halide discharge lamp in a generally spherical reflector has been found to exhibit turbulence when running. The resulting fluctuation of light especially when used in conjunction with the reflector to conce... | 01/19/1988 |
| 4707633 | Shadow mask for enhanced resolution and brightness in color cathode ray tubes In construction of a shadow mask for color picture tubes, use of Invar for the shadow mask suppresses thermal deformation caused by electron beam impingement and provision of a four pole magnet frame surrounding each mask aperture causes increased converg... | 11/17/1987 |
| 4649316 | Ion beam species filter and blanker A system for incorporation in ion-beam equipment to provide ion species filtering and optional ion beam blanking. The system has four magnets arranged on an optical axis. In between the two center magnets is arranged a plate having an off-axis aperture. T... | 03/10/1987 |
| 4633129 | Hollow cathode A long life high current density hollow cathode electron beam source for use in various E-beam apparatus which uses an ionizable gas within the hollow cathode. Bombardment of an electron emissive surface within the hollow cathode by energetic gas ions cau... | 12/30/1986 |
| 4553002 | Axial magnetic field vacuum-type circuit interrupter An axial magnetic field vacuum-type circuit interrupter. Provided in an evacuated housing is a pair of opposed contacts at least one of which is movable with respect to the other and is movable between a closed position in engagement with the other contac... | 11/12/1985 |
| 4417172 | Low pressure discharge lamp The present invention purposes to suppress flickering phenomena which is caused by moving striation of rare gas discharge in a low pressure discharge lamp tube containing therein mercury and a rare gas; an apparatus for lighting a low pressure discharge l... | 11/22/1983 |
| 4194139 | Reflex tetrode for producing an efficient unidirectional ion beam A reflex tetrode device for efficiently generating intense, pulsed unidirional ion beams. The device includes two thin, semitransparent anodes spaced from a real cathode which is maintained at ground potential. The first anode is spaced from and faces th... | 03/18/1980 |
| 4161937 | Igniter with magnetic activation A method and apparatus for delivering high electrical energy levels by means of an igniter to an air-fuel mixture within an engine, is disclosed. The method and apparatus utilizes any of a variety of igniters of simple construction in an ignition system p... | 07/24/1979 |
| 4162431 | Method and apparatus for controlling the erosion of arc producing electrodes Apparatus and process for reducing the rate of erosion of electrodes between which an arc is sustained by the provision of a field coil around the electrode which is supplied with direct current and the oscillation of that direct current supply at a frequ... | 07/24/1979 |
| 4132612 | Glow discharge method and apparatus A method and apparatus for providing a completely closed plasma trap in an r.f. type glow discharge system to enable enhanced sputtering from a pair of electrodes so that substrates may be suitably coated. The electrode pairs may be post type, hollow or p... | 01/02/1979 |
| 4132613 | Glow discharge method and apparatus A method and apparatus for providing a completely closed plasma trap in an r.f. type glow discharge system to enable enhanced sputtering from a pair of electrodes so that substrates may be suitably coated. The electrode pairs may be post type, hollow or p... | 01/02/1979 |
| 4123686 | Ion generating source A source for generating singly and/or multiply charged ions composed essentially of a glow cathode, an intermediate electrode and an anode electrode having a common axis of symmetry and bordering a gas discharge chamber and each presenting a passage openi... | 10/31/1978 |
| 4116794 | Glow discharge method and apparatus A method and apparatus for providing a completely closed plasma trap in an r.f. type glow discharge system to enable enhanced sputtering from a pair of electrodes so that substrates may be suitably coated. The electrode pairs may be post type, hollow or p... | 09/26/1978 |
| 4116793 | Glow discharge method and apparatus A method and apparatus for providing a completely closed plasma trap in an r.f. type glow discharge system to enable enhanced sputtering from a pair of electrodes so that substrates may be suitably coated. The electrode pairs may be post type, hollow or p... | 09/26/1978 |
| 4085376 | Device for electrical deceleration of flow of charged particles A device for electrical deceleration of a flow of accelerated charged particles, includes three electrodes positioned downstream of the flow of charged particles, the first electrode having a potential equal to the energy of the electron flow, the second ... | 04/18/1978 |
| 4041353 | Glow discharge method and apparatus A method and apparatus for providing a completely closed plasma trap in an r.f. type glow discharge system to enable enhanced sputtering from a pair of electrodes so that substrates may be suitably coated. The electrode pairs may be post type, hollow or p... | 08/09/1977 |
| 3989975 | Ion bombardment apparatus An apparatus with an increased efficiency, for ion bombardment machining operations at voltages not exceeding some few thousands of volts, is provided. It comprises an ion source whose plasma is extracted across grids forming cylinders of revolution about... | 11/02/1976 |
