| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315390510 | Distributed parameter resonator-type magnetron | 55 |
| 20080309239 | MAGNETRON CONTROL METHOD, MAGNETRON SERVICE LIFE JUDGMENT METHOD, MICROWAVE GENERATION DEVICE, MAGNETRON SERVICE LIFE JUDGMENT DEVICE, PROCESSING DEVICE, COMPUTER PROGRAM, AND STORAGE MEDIUM - A microwave generation device includes: a magnetron having a cathode containing a filament and an anode containing a hollow resonator arranged to oppose to each other; a filament current measuring unit; and an application voltage measuring unit for measuring voltage applied to the filament. Based on the current and the voltage obtained by the current measuring unit and the voltage measuring unit, a resistance value calculation unit obtains a resistance value of the filament. A temperature calculation unit calculates the filament temperature from the resistance value and the resistance-temperature dependent characteristic. A filament power source is controlled by a power control unit so that the filament temperature is within a predetermined temperature range. | 12-18-2008 |
| 20090066252 | Magnetron For Microwave Oven - A magnetron for microwave oven has an anode cylinder, vanes (height: H (mm)), a cathode spirally extending along the central axis, a pair of end hats (outer diameter: DEH | 03-12-2009 |
| 20090236989 | MAGNETRON - The present invention aims to provide a magnetron in which the getter material is used under the temperature range in which the gettering effect is sufficiently exerted, and even if the getter material evaporates, the vapor of the getter material is not vapor-deposited on the stem ceramic and the antenna ceramic, and therefore, unwilling electrical conduction or performance deterioration is prevented. The magnetron according to the present invention includes an anode cylinder having a cylindrical shape with open side ends and including an inner wall and a plurality of anode vane radially provided on the inner wall, a cathode part provided on a central axis of the anode cylinder, a pair of pole piece, one of which is provided on the one of the open side end and the other one of which is provided on the other open side end, a mounting part provided in the anode cylinder as a different part from the pole piece, and a getter material provided on the mounting part. | 09-24-2009 |
| 20100090602 | STRONG POWER COMPACT MICROWAVE TUBE - A microwave tube including: a) an electron gun capable of producing a beam of electrons in the form of a hollow axisymmetrical cylinder in repetitive operation; and b) a body in which the beam is intended to propagate, the body ending with a collector and being provided with means for applying an axial magnetic field for guiding the beam and, upstream from the collector, with a resonant structure crossed by the beam, intended to group the electrons into a succession of packets (P). The resonant structure is formed with two coupled cavities which follow along the axis (Z) of the beam, the coupling being achieved via an inter-cavity region crossed by the beam, this structure having axial symmetry the axis of which is that of the beam and being dimensioned so that the transformation of the electrons in packets is accomplished at a frequency which is that of the π resonant mode of the resonant structure. | 04-15-2010 |
| 20100283390 | PLASMA LAMP - A plasma lamp having a lamp bulb ( | 11-11-2010 |
| 20100289408 | SINGLE PHOTON SOURCE - A photon source capable of emitting, for example, a single photon or a single pair of photons on demand. The photon source may include an excitation region where a single instance of a quantum system is excited using excitation energy. A Stimulated Raman Adiabatic Passage (STIRAP) technique can be used for exciting the quantum system to a desired energy level. The photon source may include a photon emission region physically displaced from the excitation region. A transport device can be used for controllably moving an excited quantum system from the excitation region to the photon emission region. The photon emission region may include a resonant cavity tuned to the de-excitation frequency of the quantum system for inducing de-excitation of the quantum system and emission of a photon. The photon emission resonant cavity may be switchably coupled to an output port by a tunable resonant cavity coupling device. | 11-18-2010 |
| 20100308726 | Helical Structure and Method for Plasma Lamp - A plasma lamp apparatus includes a post structure with a material overlying a surface region of the post structure, which has a first end and a second end. The apparatus also has a helical coil structure configured along the post structure. The apparatus includes a bulb with a fill material capable of emitting electromagnetic radiation. A resonator coupling element configured to feed radio frequency energy to at least the helical coil causes the bulb device to emit electromagnetic radiation. | 12-09-2010 |
| 20110227480 | MAGNETRON AND DEVICE USING MICROWAVES - To provide a magnetron capable of suppressing generation of a reactive current and noise thereby improving oscillation efficiency, and a device using microwaves which includes the magnetron. A magnetron of the present invention includes: an anode cylinder including a plurality of anode vanes provided at a predetermined interval on an inner peripheral surface thereof; a center lead including a first linear portion, a second linear portion which is disposed parallel to the first linear portion and which is disposed out of alignment with the first linear portion in a plane perpendicular to an axial direction of the anode cylinder, and a bent portion which connects the first linear portion to the second linear portion; and a cathode filament which is supported by the center lead within the anode cylinder and which is placed coaxially with the anode cylinder. The center lead is formed so as to become bent between the first linear portion and the second linear portion by the bent portion. A position of one anode vane closest to the bent portion is higher than a position of another anode vane with respect to the axial direction of the anode cylinder. | 09-22-2011 |
| 20110234093 | MAGNETRON AND MICROWAVE OVEN THEREWITH - A magnetron has an anode cylinder, ten vanes, three strap rings. The ten vanes are fixed to an inner surface of the anode cylinder and arranged in a radial pattern of which center is at an axis of the anode cylinder. Each of the three strap rings connects vanes that are alternatively arranged. A first strap ring and a third strap ring are arranged on a first end of the vanes in a direction of axis, and a second strap ring is arranged on a second end that is opposite to the first end. Outer diameter of the second strap ring is equal to inner diameter of the first strap ring and outer diameter of the third strap ring is equal to inner diameter of the second strap ring. | 09-29-2011 |
| 20110254442 | MAGNETRON AND MICROWAVE-USING EQUIPMENT - A magnetron for holding deformation of a cathode side tube for alignment of a cathode filament and eliminating the need for alignment at the time of exterior assembly work of the magnetron is provided. The magnetron of the invention includes an anode cylinder; a cathode side tube hermetically coupled to a lower portion of the anode cylinder; and a shield cylinder having a cylindrical part extending in substantially a vertical direction, a flange part which is connected to the cylindrical part and extends in substantially a horizontal direction over the entire periphery of the cylindrical part, and a folded part in which a portion of the flange part is folded toward the cathode side tube, the shield cylinder being electrically coupled to the cathode side tube at a lower end of the anode cylinder. | 10-20-2011 |
| 20120146504 | Seal and Fixation Assembly for a Rotating Cylindrical Magnetron Electrode - A seal and fixation assembly includes a cylindrical target having an inside surface with a shoulder that forms a stop within the target. A target retaining ring is disposed about the target. A seal plate is disposed within the target and engages the stop and the inside surface of the target. An end cap is disposed on the end of the target and includes a portion with a beveled surface within the target. A sealing element is disposed between the inside surface of the target, the seal plate, and the beveled surface of the end cap. A clamp is disposed over the end cap and the target retaining ring. Engagement of the end cap and the target retaining ring with the clamp causes the end cap to move within the target toward the stop to compress the sealing element between the target, the seal plate, and the beveled surface. | 06-14-2012 |
| 20120212130 | DEVICE, SYSTEM AND METHOD FOR GENERATING ELECTROMAGNETIC WAVE FORMS, SUBATOMIC PARTICLES, SUBSTANTIALLY CHARGE-LESS PARTICLES, AND/OR MAGNETIC WAVES WITH SUBSTANTIALLY NO ELECTRIC FIELD - The present invention is directed towards devices, systems and methods which produce electromagnetic waveforms including radio-frequency waves, microwaves and electromagnetic waves having no field current or electric field (magnetic waves) and subatomic and/or charge-less particles. In one embodiment, the system and method produces a “charge-less” propagating “magnetic” wave and/or charge-less particles and/or subatomic particles which have demonstrated high utility in the structural modification of both solids and liquids for materials processing. The energy generator according to one embodiment comprises a magnetron emitter hermetically sealed in a housing and supplied with a continuous dirty or erratic voltage signal to cause the magnetron emitter to operate erratically and unstably as a broad band signal generator whereby electromagnetic waves are produced in the hermetically sealed housing which facilitates and produces a plasma above the cathode of the magnetron emitter. The plasma preferably expands and contracts (oscillating) within the housing. | 08-23-2012 |
| 20120235564 | MAGNETRON - A cathode of a magnetron having a radial extension to accommodate the cathode terminals is supported by arms which have a greater diameter over the region in which they are supported in the glass thimble than over the region of the free ends. This shifts any vibrations to a higher frequency band, which is less liable to be excited in the event the magnetron is moved rapidly as in a linac used for radiotherapy purposes. | 09-20-2012 |
| 20120235565 | MAGNETRON AND APPARATUS THAT USES MICROWAVES - The magnetron includes: an exhaust pipe in which an antenna is disposed in a vacuum-sealed space, and which extends along the central axis of the antenna; an insulation tube which extends along the central axis of the antenna, and of which one end is fixed to the exhaust pipe by brazing; and an antenna cap including a bottom portion and a tubular portion which is continuous with the bottom portion to extend along the axis of the antenna and of which a diameter on an open end side is larger than a diameter of the exhaust pipe. The tubular portion of the antenna cap covers: a brazed portion where the exhaust pipe and the insulation tube are brazed to each other; and a metalized portion. | 09-20-2012 |
| 20130082594 | MAGNETRON - A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue. | 04-04-2013 |
| 20130093322 | ULTRAVIOLET LAMP SYSTEM AND METHOD FOR CONTROLLING EMITTED ULTRAVIOLET LIGHT - Embodiments of the invention provide an apparatus, method, and program product to control a lamp system. The apparatus comprises a plasma lamp bulb ( | 04-18-2013 |
| 20130106282 | Lamp | 05-02-2013 |
| 20130127337 | Flexible Impedance Matching for a Microwave Generator Supplied with Pulse Current - A method for operating an arrangement of equipment that include a pulse generator for generating electrical pulses, a microwave generator with a break-through voltage, and a transmission element is provided. For transmission of the pulses, the pulse generator is connected to the microwave generator via the transmission element, which in the arrangement of equipment, acts as an impedance varying over time. The voltage characteristic over time or the current characteristic over time of each pulse is defined such that in an operating mode, the impedance of the transmission element is matched to the impedance of the microwave generator when the break-through voltage is reached. | 05-23-2013 |
| 20130134872 | Magnetron Power Supply - A power supply for a magnetron has a PFC DC voltage source and an HV (High Voltage) converter. The voltage source is mains driven and supplies DC voltage above mains voltage on line, smoothed by capacitor to the HV converter. The latter supplies switched alternating current to transformer. This supplies higher voltage alternating current to a rectifier, in turn supplying the magnetron with high, magnetron powering, anode voltage on line. The DC voltage source has an PFC inductor, which is switched by a transistor switch under control of an integrated circuit. It is the inductor which enables the voltage source to provide a variable DC voltage. An input rectifier is provided for rectifying mains voltage. The output voltage of the voltage source is monitored and fed back to the integrated circuit by a voltage divider. | 05-30-2013 |
| 20130169151 | Microwave Excited Ultraviolet Lamp System With Data Logging and Retrieval Circuit and Method - A microwave excited ultraviolet lamp system with a data logging and retrieval circuit and method for operating the same. The data logging and retrieval circuit stores operational data in a cache memory using a FIFO data storage protocol. The contents of the cache memory are periodically copied to a larger removable memory so that the removable memory contains a relatively long historical record of the system operational parameters. The data logging and retrieval circuit includes a data port configured to load the contents of the cache memory into an external device when the device is coupled to the data port. A second data port allows the external device to supply power to the data logging and retrieval circuit so that data may be retrieved when the internal power supply is malfunctioning. Data stored in the removable memory may be protected so that it may only be accessed by authorized personnel. | 07-04-2013 |
| 20130221844 | ELECTRON TUBE - A high power electron tube, such as a magnetron, has the disadvantage that, to reduce the chances of the ceramic RF window failing in use, the manufacturing step entails a prolonged ageing period of powering the magnetron at low power on test, in order to drive any absorbed gases out of the RF window. According to the invention, the RF window | 08-29-2013 |
| 20130300287 | Generating Microwave Radiation - A method for operating a device having an anode and a cathode for generating microwave radiation with an accelerating voltage is provided. A chronological sequence of the accelerating voltage is provided by a series of voltage pulses. A first voltage pulse with an operating amplitude is applied between the anode and the cathode in order to determine whether an electric flashover occurs during the applied first voltage pulse. A second voltage pulse is applied following the first voltage pulse with a deionization amplitude that is smaller than the operating amplitude when the electric flashover occurs during the applied first voltage pulse. | 11-14-2013 |
| 20140021859 | ELECTRON TUBE - A magnetron has an anode body ( | 01-23-2014 |
| 20140159572 | METHOD FOR PROCESSING A GAS AND A DEVICE FOR PERFORMING THE METHOD - A method and device for processing a gas by forming microwave plasmas of the gas. The gas that is to be processed is set in a two or three co-axial vortex flow inside the device and exposed to a microwave field to form the plasma in the inner co-axial vortex flow, which subsequently is expelled as a plasma afterglow through an outlet of the device. | 06-12-2014 |
| 20140184063 | Microwave Disinfection and Sterilization - A method and apparatus comprising microwave radiation pulses to reduce a microorganism population in an object. | 07-03-2014 |
| 20140210340 | MAGNETRON CATHODES - A magnetron cathode comprises electron emissive material included in a cathode body and a support structure for supporting the cathode body. The support structure has a longitudinal axis and includes a first part having a first cylinder integrally formed with a first end hat and a second part having a second cylinder integrally formed with a second end hat. The first cylinder and the second cylinder have an overlapping region in the longitudinal axial direction and are joined together. The cathode body is located around the first cylinder of the first part of the support structure and is joined to the first cylinder by a brazed joint. The outer surface of the first cylinder is grooved at the brazed joint. | 07-31-2014 |
| 20140306604 | MAGNETRON FILTER - A low-filter is arranged for attachment to an exterior face of a wall of an electrically conducting screened chamber encasing the magnetron and an associated isolation transformer electrically connected to terminals of the magnetron. Output connections of the filter pass directly through an interface between the electrically conducting screened chamber and the filter to connect electrically, directly or indirectly, with the isolation transformer. There are therefore no electrical leads outside the screened chamber electrically connecting the filter to the isolation transformer. | 10-16-2014 |
| 20140320006 | RF DEVICE FOR SYNCHROCYCLOTRON - RF device ( | 10-30-2014 |
| 20150123538 | MAGNETRON - A magnetron includes a cooling block having an annular continuous portion with opposite end portions opposed to each other, the cooling block being secured to an outer peripheral surface of the cylindrical anode body, the cooling block having a coolant circulation pathway defined therein, a tightening member engageable with the opposite end portions of the cooling block to tighten the cooling block by reducing a distance between the opposite end portions of the cooling block, and a pair of pipe joints each connected to a portion of the cooling block adjacent to one of the opposite end portions so as to communicate with the coolant circulation pathway. The tightening member is disposed between connecting portions of the pair of pipe joints with the cooling block so as to extend in a direction inclined with respect to a plane including an annular direction of the cooling block. | 05-07-2015 |
| 20150325426 | Lighting Device - A lighting device includes: a casing having an inlet that introduces external air at one side and an outlet that discharges the introduced air through the inlet at the other side; a fan located within the casing to flow external air from an inlet direction to an outlet direction; an inlet cover that blocks at least an upper area of the inlet to prevent external air from being directly introduced into the inlet; and an air flow channel that communicates the inlet and the outside, wherein the air flow channel includes: two contracting flow channels having a reducing sectional area advancing in an advancing direction of air; and two expanding flow channels that communicate with the contracting flow channels and that have an increasing sectional area advancing in an advancing direction of air, wherein in a connection portion of the contracting flow channel and the expanding flow channel, the advancing direction of air is changed. | 11-12-2015 |
| 20150380198 | MAGNETRON - A 4G magnetron is disclosed. The magnetron may include an anode, having a cylindrical member and anode vanes disposed within the cylindrical member which define resonant cavities therebetween, and a dispenser cathode, suitable for heating and located coaxially within said anode. The magnetron may operate in a temperature range of about 850-1050 C. The magnetron may include conductive cooling. The magnetron may comprise inventive anode and cathode structures. A method for preparing a plurality of magnetron tubes substantially simultaneously is further provided. | 12-31-2015 |
| 20160172145 | Magnetron | 06-16-2016 |
| 315390530 | With output-coupling means | 4 |
| 20090058301 | Magnetron device with mode converter and related methods - The present invention provides a relativistic magnetron with axial extraction, or magnetron with diffraction output (MDO), with a mode converter placed directly within the diffraction output of radiation to effectively convert the operating π-mode into a radiated mode of simpler radiation patterns. | 03-05-2009 |
| 20090189527 | MAGNETRON WITH CATHODE DECOUPLED FROM OUTPUT - A magnetron has a first set of vanes etc which connect by legs to a coaxial output coupler and a second set of vanes etc which (in one embodiment) alternate with the vanes of the first set and are not connected to the output coupler. The vanes of each set are held, for example, by strap rings which may be distributed along the length of the anode, at the same potential as each other, and the polarity of the vanes of one set is opposite to that of the other set. A problem with such a magnetron is that there is capacitive coupling between the cathode and the output coupler, which can lead to the coaxial TEM mode propagating along the cathode. According to the invention, additional capacitive coupling is introduced by means of axial extensions | 07-30-2009 |
| 20110084606 | DEVICE FOR THE GENERATION OF MICROWAVES - The invention relates to a device for the generation of microwaves, comprising a virtual cathode oscillator ( | 04-14-2011 |
| 20110254443 | PHASE AND FREQUENCY LOCKED MAGNETRON - A magnetron of improved performance capable of stabilizing the frequency and phase of magnetron output for use in particle accelerators and other applications. Thin variable-permeability blocks are attached inside the resonant anode structures of a standard magnetron design. A variable bias electromagnet, with field orthogonal in direction to the RF magnetic field, is used to vary the permeability of each block and therefore the resonant frequency of each anode structure. An electronic feedback control circuit adjusts the bias magnetic fields to lock in the frequency and phase of the magnetron output to an external low-level reference signal. Such devices may be used to provide synchronized high-power RF to many locations (e.g. the RF cavities of a particle accelerator), while requiring the distribution only of electrical power and an appropriate low-level RF reference signal. | 10-20-2011 |
| 315390550 | Variable tuning | 5 |
| 20110057563 | Electronic Frequency Tuning Magnetron - A highly-reliable electronic frequency tuning magnetron comprises an anode for forming a resonant cavity which is segmented into a plurality of spaces in an inner periphery side of a cylindrical anode shell, a cathode provided at the center of the anode shell along its cylindrical axial direction and an exhausted structure having a coaxial central conductor which is connected to the inside of the cavity of the anode shell and is coupled thereto in a high-frequency manner, wherein the coaxial central conductor is externally led through a wall of the exhausted structure via a through-hole and the through-hole is covered by a dielectric portion placed between an external conductor for constituting the coaxial central conductor and the central conductor, wherein a portion of the led coaxial central conductor is conductively connected to a switching element. | 03-10-2011 |
| 20120187833 | DEVICE FOR GENERATING HYPERFREQUENCY WAVES HAVING A CATHODE WHEREOF EACH END IS CONNECTED TO A VOLTAGE SOURCE - The device according to the invention for generating hyperfrequency waves, of the magnetron type, comprises: a cathode, elongated between first and second longitudinal ends; an anode, surrounding the cathode and comprising an inner surface oriented toward the cathode and delimiting a plurality of resonant cavities distributed along the periphery thereof; and a voltage source, to establish a potential difference between the cathode and the anode. The cathode is electrically connected to the voltage source by each of its longitudinal ends, to bring those two ends to substantially equal electric potentials. The generating device also comprises a device for adjusting the longitudinal length of each resonant cavity, the adjusting device comprising at least one mobile element defining a longitudinal end of at least one resonant cavity. | 07-26-2012 |
| 20130221845 | ION-MODE PLASMA CONTAINMENT - For ion-mode plasma containment, a toroidal vacuum vessel ( | 08-29-2013 |
| 315390610 | Movable tuning element (e.g., slug) | 2 |
| 20120200223 | Hyperfrequency wave generator device comprising a plurality of magnetrons - The hyperfrequency wave generator device according to the invention comprises a plurality of magnetrons, each magnetron comprising: a cathode, and an anode, surrounding the cathode and comprising an inner surface defining a plurality of resonant cavities distributed along its periphery. The generator device also comprises at least one waveguide, each waveguide extending from the anode of a magnetron toward the outside of the magnetron. The plurality of resonant cavities of each magnetron comprises a plurality of resonant connecting cavities, or at least one resonant connecting cavity and at least one resonant output cavity. Each resonant connecting cavity of each magnetron is identical each resonant connecting cavity and, if the magnetron comprises at least one output cavity, to each resonant output cavity of the magnetron. | 08-09-2012 |
| 20130140985 | RESONATOR CONFIGURATION FOR MICROWAVE GENERATOR - In order to increase a service life of a microwave generator, a resonator configuration for a microwave generator has a hollow cylindrical electrical conductor positioned inside a housing, a first electrode, and a second electrode. Two electrodes are spaced apart from one another and form a spark gap in the region of the conductor. A contact element is provided for making electrical contact between the conductor and the first electrode. The position of the first electrode can be adjusted to modify a length of the spark gap. Furthermore, the contact element is electrically connected to the first electrode or its holder so as to resist movement so that the opposing contact surfaces remain in contact even when the position of the first electrode is adjusted with respect to the second electrode. The contact element is configured to be deformable, preferably elastically deformable, for this purpose. | 06-06-2013 |
| 315390670 | Tubular anode with eccentric or axially displaced cathode | 3 |
| 20110241542 | MAGNETRON - A magnetron includes a cathode and a vacuum envelope in which the cathode extends. The vacuum envelope includes a portion extending radially relative to the axis of the cathode. A pair of electrically conducting support arms for supporting the cathode are in electrical connection with cathode supply terminals. The support arms have free ends connected to the cathode by leads. A wall extends across an area of the radially-extending portion. The wall is positioned along the radially-extending portion nearer to an end of the radially-extending portion that is adjacent to the cathode than to an end that is remote from the cathode and the support arms are mounted in the wall. | 10-06-2011 |
| 20110298373 | MAGNETRON AND MICROWAVE UTILIZATION DEVICE - Performance degradation of a magnetron is prevented by preventing a cylinder part of a metal sleeve from sinking in a recess of a pole piece even when subjected to a high pressure in the case of handling or assembly. The magnetron of the invention includes: an anode cylinder which has a cylindrical shape with both ends opened and which includes a plurality of vanes radially arranged on an inner wall surface thereof; a cathode structural body arranged inside the anode cylinder in an axial direction of the anode cylinder; a pair of pole pieces which is positioned in openings of the both ends of the anode cylinder and which forms a static magnetic field along the axial direction of the anode cylinder in an active space formed between the cathode structural body and the vanes; a pair of annular magnets arranged outside the pair of pole pieces; a magnetic yoke which is positioned outside the pair of annular magnets and forms a magnetic path for generating the static magnetic field in the active space together with the pair of pole pieces and the pair of annular magnets; and metal sleeves which are positioned outside the pair of pole pieces and configured to air-tightly seal the anode cylinder and each of which includes a cylinder part, a flange part continuous with the cylinder part, and a plurality of protrusions provided on a portion in which the cylinder part continues with the flange part. | 12-08-2011 |
| 20160163494 | Magnetron - To provide a magnetron improved in high efficiency and load stability while suppressing costs. By shortening the height of vane Vh so that the ratio of the height of vane Vh to a gap between end hats EHg (EHg/Vh) satisfies a condition 1.12≦EHg/Vh≦1.26, an input side pole piece-vane gap IPpvg becomes larger than an output side pole piece-vane gap OPpvg, and an input side end hat-vane gap IPevg becomes larger than an output side end hat-vane gap OPevg, load stability at high efficiency can be improved while shortening the height of vane Vh. Therefore, it is possible to provide a magnetron improved in high efficiency and load stability while suppressing costs. | 06-09-2016 |
| 315390710 | Magnetic field generating and pole structure | 8 |
| 20090153055 | MAGNETRON AND METHOD OF MANUFACTURING MAGNETRON ANODE VANE - In each anode vane | 06-18-2009 |
| 20110241543 | MAGNETRON - A magnetron includes an anode with an anode casing at least partly surrounding the anode. A pair of permanent magnets on each side of the anode define an interaction region and create a magnetic circuit defining a magnetic field through the interaction region. A mass of magnetically permeable material is positioned in a vicinity of the magnetic circuit. The mass is arranged to be slidable over the anode casing. A locking device secures the position of the mass to set the strength of the magnetic field through the interaction region. | 10-06-2011 |
| 20130099664 | AMALGAM TIP TEMPERATURE CONTROL FOR AN ELECTRODELESS LAMP - A electrodeless lamp including a fluorescent discharge vessel, a tip, an amalgam, a lamp core, and a heater. The vessel contains a gas having a partial vapor pressure and a fluorescent material. The tip has an inner end engaging the vessel, and an opening in communication with the gas. The amalgam is positioned within the opening, in heat transfer relation with the tip. When the temperature of the amalgam decreases, mercury vapor in the gas condensates onto the amalgam, causing a decrease in the partial vapor pressure of the gas. The opposite occurs when the amalgam temperature increases. The lamp core generates a magnetic flux, causing an electrical discharge in the gas. The heater includes a positive temperature coefficient connected to a winding of the lamp core. The heater is in heat transfer relation with the tip and heats the tip when the electrodeless lamp is in a dimming mode. | 04-25-2013 |
| 20140159573 | LAMP COMPRISING ACTIVE COOLING DEVICE FOR THERMAL MANAGEMENT - Embodiments of a lamp comprise a light source and an active cooling device that propagates airflow within the lamp to dissipate heat from the light source. In one embodiment, the lamp comprises a light emitting diode (LED) device and an inductor that couples in series with the light emitting diode (LED) device. The lamp also comprises a diaphragm magnetically coupled with the inductor, wherein the diaphragm can flex between a first position and a second position to generate the air flow. | 06-12-2014 |
| 20140354149 | APPARATUS FOR GENERATING A HOLLOW CATHODE ARC DISCHARGE PLASMA - An apparatus for generating a hollow cathode arc discharge plasma, including two plasma sources, each including a hollow cathode and an electrode which is associated with the hollow cathode and which has an opening that extends through the electrode, wherein the hollow cathodes of the two plasma sources are connected to a pulse generator which generates a bipolar, medium-frequency pulsed voltage between the two hollow cathodes. Here, in each of the two plasma sources, the hollow cathode is connected in an electrically conducting manner, directly or with interconnection of at least one current direction limiting component, to the associated electrode. | 12-04-2014 |
| 20150048735 | ENCAPSULATED MAGNETRON - Embodiments of the present invention generally provide a magnetron that is encapsulated by a material that is tolerant of heat and water. In one embodiment, the entire magnetron is encapsulated. In another embodiment, the magnetron includes magnetic pole pieces, and the magnetic pole pieces are not covered by the encapsulating material. | 02-19-2015 |
| 20160042907 | COMPACT MAGNET DESIGN FOR HIGH-POWER MAGNETRONS - A high-power magnetron assembly includes a high-power magnetron and a compact magnetic field generator. The high-power magnetron includes a cathode configured to emit electrons in response to receiving a supply of voltage from a power supply. The high-power magnetron includes an anode configured to concentrically surround the cathode and to attract the emitted electrons across an interaction region between the cathode and the anode. The compact magnetic field generator includes a plurality of permanent magnets including: a cathode magnet that has a longitudinal axis of symmetry annularly and that is surrounded by the cathode and disposed within the magnetron; and an anode magnet configured to annularly surround an outer perimeter of the magnetron. An arrangement of the plurality of permanent magnets concentrically about the longitudinal axis of symmetry forms a specified magnetic field within the interaction region that bounds the electrons emitted within the interaction region. | 02-11-2016 |
| 20160163493 | MAGNETIC FIELD GENERATION APPARATUS FOR A MAGNETRON TUBE, MAGNETRON AND METHOD FOR REPLACING AN OLD MAGNETRON TUBE OF A MAGNETRON WITH A NEW MAGNETRON TUBE - A magnetic field generation apparatus is provided for a magnetron including a permanent magnet arrangement and a magnetic field conductor device. The magnetic field conductor arrangement device has a diverting element. The diverting element, which includes a plurality of rectangular diverting segments, is arranged detachably on the magnetic field generation apparatus during maintenance work in order to deflect a magnetic field generated by the permanent magnet arrangement away from further components of the magnetic field generation apparatus and components of the magnetron. A magnetron includes a magnetron tube and such a magnetic field generation apparatus. In a method for replacing an old magnetron tube of such a magnetron with a new magnetron tube, the diverting element is arranged on the magnetic field generation apparatus, and the old magnetron tube is removed from the magnetron and replaced with the new magnetron tube in order to then remove the diverting element again. | 06-09-2016 |
| 315390750 | Anode with plural cavities | 3 |
| 20090218949 | MAGNETRON - The present invention provides a magnetron which can conduct more magnetic flux in the active space at the periphery of a cathode structure to thereby further improve the efficiency of a magnetic circuit. The magnetron of the present invention includes an anode cylinder on which inner wall a plurality of anode vanes are provided, a pole piece provided on an end side of the anode cylinder, a circular magnet provided on the vicinity of the pole piece, and a magnet ring provided between the anode cylinder and the circular magnet. An outer diameter of the magnet ring is smaller than or equal to the outer diameter of the circular magnet and larger than or equal to the outer diameter of the anode cylinder. The magnet ring has a portion on a surface of the pole piece side whose normal line is non-parallel to the central axis of the anode cylinder. | 09-03-2009 |
| 20130241407 | HARMONIC MODE MAGNETRON - A novel magnetron achieves increased power output at high frequencies by replacing a typical resonant cavity with a slow-wave waveguide structure. Waveguides built into the anode body sustain oscillations having phase change coefficients of 2*pi*n radians per section, where n is a positive integer. The magnetron is capable of supporting RF oscillations at frequency harmonics of the fundamental frequency, permitting it to operate at frequencies double or quadruple that of a similarly sized conventional magnetron. | 09-19-2013 |
| 20140191657 | COAXIAL MAGNETRON - The object of the presently disclosed embodiment is to improve heat dissipation and an overall cooling efficiency to raise a peak oscillation output. To achieve the object, there is provided a coaxial magnetron having the following configuration: Around a cathode, vanes and an anode cylinder form an anode resonant cavity, and a cylindrical side body forms an outer cavity. An input side structure having an input part and an upper structure are joined to both ends of the cylindrical side body. One end of the anode cylinder is joined to the input side structure. A groove (or step) for adjusting the distance between the structures and at the both ends is provided, and the groove is joined to the other end of the anode cylinder. | 07-10-2014 |
