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Class 219/738 - With leakage prevention


Subclass of Class 219 - Electric heating
Definition: Subject matter wherein microwave energy is impeded from
No. of patents: 111
Last issue date: 02/21/2012


1      
NumberTitleIssue Date
8119955Device for preventing leakage of microwave for microwave oven
The present invention relates to a device for preventing microwave leakage for a microwave oven. The present invention comprises a cavity assembly formed with an opening portion through which heating energy generated in an energy generating means is supplied into a ...
02/21/2012
7671309Microwave combustion system for internal combustion engines
A microwave combustion system is presented that can replace the conventional spark plug in an internal combustion engine. One or more microwave pulses are provided to a microwave feed in a plug that sits in the cylinder. A microwave generated plasma generated by the...
03/02/2010
7381932Quasi-optical material treatment apparatus
A quasi-optical material treatment apparatus includes a first mirror and a second mirror. The first mirror is arched, and has a focal point in a chamber distance, and a coupling port to receive a high power microwave from an external microwave source that travels al...
06/03/2008
7053348Microwave oven
The invention provides a microwave oven capable of reducing the electromagnetic noises in the 2.45 GHz band generated during operation of the microwave oven. A microwave oven 1 including a microwave oven main body 2 having a heating chamber 3, a...
05/30/2006
7002122Choke assembly for continuous conveyor microwave oven
A continuous feed microwave applicator having a choke formed along a longitudinal gap. A conveyor may be fit to run along the length of the applicator, within the gap. ...
02/21/2006
6940057Microwave oven
A microwave oven including a cabinet defining a cooking chamber therein, and a door coupled to the cabinet to open and close the cooking chamber. The door includes a door frame forming an appearance of the door, a shielding plate installed in the door frame to preve...
09/06/2005
6927372Microwave oven with convection heating
A combined microwave and hot-air circulating cooking appliance is disclosed. The appliance has a plurality of air injection openings that are provided in a wall of the cooking cavity for injecting heated air into the same. Each of the injection openings is connected...
08/09/2005
6900422Microwave device
A microwave device includes a cooking space disposed in a housing, at least one microwave source, and at least one further radiation source, as an alternative to the microwave source, which is protected from microwaves from the microwave source by a shielding grid. ...
05/31/2005
6797929Cylindrical reactor with an extended focal region
An elliptical exposure chamber has an extended focal region. A plurality of cylindrical reactors (25) form the extended focal region. Reducing the size of the opening (58) to each reactor (25) reduces the amount of energy reflected and increases...
09/28/2004
6774567Microwave oven
A microwave oven using DC power which can endure strong vibrations and eliminate noise according to noise standards. The microwave oven includes at least one second choke coil which is arranged outside a magnetron filter box and connected in series to at least one f...
08/10/2004
6713739Microwave-assisted chemical synthesis instrument with fixed tuning
An instrument is disclosed for microwave-assisted chemical processes that avoids tuning discrepancies that otherwise result based upon the materials being heated. The instrument includes a source of microwave radiation, a waveguide in communication with the source, ...
03/30/2004
6455826Apparatus and method for continuous microwave drying of ceramics
The invention is directed at an apparatus capable of the continuous drying of ceramic articles which produces little or no microwave radiation emission. The drying apparatus comprises comprise a microwave-heating chamber, for heating a ceramic, having an ...
09/24/2002
6452142Microwave ovens and sub-assemblies therefor
A microwave oven has an oven cavity with a wall (2) formed with a hole (6) covered on an external side of the wall by a metal launch box (8) and choke plate (7). A metal match plate (10) is mounted on the internal side of the wall (2) so that the match pl...
09/17/2002
6423954Shielding method during microwave radiation drying
Method for shielding against dangerous microwave radiation during drying of a surface of a water damaged building part by one or more mobile unit(s) emitting microwave radiation against the surface that is being dried, which method comprises installing a ...
07/23/2002
6373037Oven cavity construction for convection cooking appliance
A convection cooking appliance includes an oven cavity and an air channel assembly that extends about at least a portion of the oven cavity. The air channel assembly includes an air delivery section and a return section, both of which are preferably attac...
04/16/2002
6263830Microwave choke for remote plasma generator
A remote plasma generator, coupling microwave frequency energy to a gas and delivering radicals to a downstream process chamber, includes several features which, in conjunction, enable highly efficient radical generation. In the illustrated embodiments, m...
07/24/2001
6248987Microwave system for heating, and controlling the temperature of a heat bath
In a microwave system for heating, and controlling the temperature of, a heat bath including a containment for a liquid, with a wall on which the microwave system is mounted, the microwave system comprises a microwave source operating at an ISM frequency ...
06/19/2001
6153867Heater cover for microwave ovens using light wave heaters
A heater cover for microwave ovens using halogen heaters in addition to magnetrons is disclosed. The above heater cover is designed to have an optimal opening ratio while effectively protecting the halogen heaters from microwaves and having a desired stru...
11/28/2000
6153866Microwave oven with a grilling device
A microwave oven with an oven capacity (3) which is designed so that a part (9) of the cavity is essentially free of microwave radiation, in which part (9) is arranged a grill element which radiated IR radiation. The microwave-free space is obtained by a ...
11/28/2000
6147336Induction heaters for heating food, fluids or the like
A cooking apparatus includes a fan 13 provided at the top wall of a heating chamber 2 with its front face directed downwards. A spiral coil 14 in the form of a flat disc is provided around a rotation shaft 12 above the heating chamber 2. When high-frequen...
11/14/2000
6127665High frequency heating apparatus having a mechanism for preventing leakage of radio waves
In a microwave oven, a driving motor is fitted inside a fitting member that is fixed to a cabinet. The upper part of the output spindle of the driving motor is disposed through the fitting member so as to protrude outward, and is fitted into the lower par...
10/03/2000
6118112Choke knob for coaxial microwave feed
A microwave apparatus includes a coaxial feed connected to a microwave waveguide and extended into a rotating antenna applicator in a microwave cavity, wherein a gap between the ceiling of the microwave cavity and the top of the rotating antenna applicato...
09/12/2000
6104018Uniform bulk material processing using multimode microwave radiation
An apparatus for generating uniform heating in material contained in a cylindrical vessel is described. TE10 -mode microwave radiation is coupled into a cylindrical microwave transition such that microwave radiation having TE11 -, TE...
08/15/2000
6080977Apparatus for concentrating salt-containing solutions with microwave energy
An apparatus for concentrating and solidifying a salt solution includes a vessel for containing the salt solution having an exposed surface, the vessel having a generally open upper portion, a cover for sealing the generally open upper portion of the vess...
06/27/2000
6075232Method and apparatus for electromagnetic exposure of planar or other materials
The present invention overcomes many of the problems associated with electromagnetic exposure of planar materials. A diagonal slot compensates for the effects of signal attenuation along the propagation path. Adjustably variable path lengths allow peaks a...
06/13/2000
5998774Electromagnetic exposure chamber for improved heating
The present invention utilizes dielectric slabs to provide a relatively uniform electromagnetic field to a cavity between two or more dielectric slabs. Each dielectric slab is a thickness equal to or nearly equal to a quarter of a wavelength of the electr...
12/07/1999
5986251Microwave oven main body structure
A microwave oven includes a cavity formed by a plurality of plates with inner surfaces thereof forming a cooking chamber, outer surfaces of the plates forming a casing of the microwave oven, a shielding plate forming a machine chamber underneath the cavit...
11/16/1999
5945021Microwave and steam cooking system
The invention relates to a system for cooking or heating a food product with combined steam and microwave energy having a microwave oven with a carrousel for moving the food product into and out of the oven. The food product is placed in a steaming compar...
08/31/1999
5942144Door for microwave oven
A door of a microwave oven includes an outer cover defining an exterior of the door, a door frame coupled to the outer cover and forming a choke recess for preventing microwave leakage, and a bracket including two parallel walls surrounding the choke rece...
08/24/1999
5861612Multimode electromagnetic wave energy rejection filter arrangement for a slot waveguide
A multimode electromagnetic wave energy rejection filter arrangement for a slot waveguide includes at least one system of series coupled LC-circuits located, at least partly, within a cavity of the slot waveguide and arranged along a predetermined line in...
01/19/1999
5767492Tunnel oven for cooking food, including a device for connecting two tunnel oven segments
A connection device for two successive segments (1A, 1B) of a tunnel oven for cooking food, comprises a first sleeve (16A) fixed to the frame (18) of the tunnel and second sleeve (17) secured to the tunnel segments (1A, 1B). The second sleeve (17) is moun...
06/16/1998
5712672Recording sheet transport and effluents removal system
A transport system for transporting a recording sheet having liquid ink deposited thereon through a dryer for drying the liquid ink having an input portion and an output portion. The transport system includes a transport belt disposed between the input po...
01/27/1998
5708259Microwave decomposition machine with output door mechanism
An output door mechanism for a microwave decomposition machine allows a rotating tank to be coupled to a fixed waveguide with both a vacuum and a microwave seal. The fixed waveguide delivers microwave power to the rotating tank in a decomposition machine....
01/13/1998
5698125Microwave oven in combination with induction heating cooker
In a microwave oven in combination with induction heating cooker, a shielding plate is mounted on a bottom surface of a heating chamber and an induction coil is provided below the shielding plate in order to cut off microwave provided when cooking food by...
12/16/1997
5686007Microwave oven magnetron with slit filament terminal
This invention relates to a magnetron of a microwave oven is disclosed including a lead for supporting a filament, and a filament terminal for electrically connecting the lead and a choke coil, wherein the filament terminal has a slit and serves to cut of...
11/11/1997
5600531Capacitor for magnetron of microwave oven
A capacitor for the magnetron of a microwave oven is disclosed, in which the structure is relatively simple, so that the material cost would be saved, and that the productivity would be improved. An elliptic opening is formed on a side wall of a shielding...
02/04/1997
5589140Continuous denitration apparatus
A continuous denitration apparatus capable of ensuring mass processing of a nitrate solution of a nuclear fuel and a continuous stable operation. By a rotation of screws, uranium nitrate solution supplied from a liquid feed inlet is continuously conveyed....
12/31/1996
5481092Microwave energy generation device used to facilitate removal of concrete from a metal container
An apparatus for mixing concrete adapted to facilitate removal of hardened concrete therefrom includes a metal container and a microwave energy generation device. The metal container is adapted to contain concrete and to enable concrete placed therein to ...
01/02/1996
5455405Noise shielding apparatus for magnetron of microwave oven
A noise shielding apparatus for the magnetron of a microwave oven is disclosed, in which the structure is relatively simple, so that the material cost would be saved, and that the productivity would be improved. An elliptic opening is formed on a side wal...
10/03/1995
5451752Noise shielding apparatus for magnetron of microwave oven
A noise shielding apparatus for the magnetron of a microwave oven for preventing the lowering of the voltage resistance of the capacitor due to the poor concentricity and the poor interfacial state is disclosed. A shielding case has a side wall with an el...
09/19/1995
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