Abstract: The invention is intended to heat a food or other object to be heated favorably by means of microwaves while enclosing the food with superheated steam. To achieve this purpose, the apparatus comprises a heating chamber in which an object to be heated is put, steam generating means for supplying superheated steam to the heating chamber, superheated steam maintaining means provided in the heating chamber to prevent the temperature of the superheated steam from lowering, and microwave generating means for irradiating the object with microwaves, whereby the object placed in the heating chamber is heated in superheated steam with microwaves, so that the food is efficiently heated from inside and outside and the food is not wetted.

Abstract: A microwave oven and microwave heating method generates microwaves within a cavity in a predetermined mode such that there is a known region of uniform microwave field. Samples placed in the region will then be heated in a relatively identical manner. Where perturbations induced by the samples are significant, samples are arranged in a symmetrical distribution so that the cumulative perturbation at each sample location is the same.

Abstract: An apparatus for assembling a door and a main body in a microwave oven is disclosed, in which a door can easily be mounted in a main body of a microwave oven. The apparatus for assembling a door and a main body in a microwave oven includes a hinge plate mounted in a main body of a microwave oven, a hinge shaft mounted in a cut-open portion of a choke cover fixed to a door, for being rotatably fixed to the hinge plate, and a detachment prevention portion elastically deformed to allow the hinge plate to be fixed to the hinge shaft and restored to the original state if the hinge plate is completed to be fixed to the hinge shaft to prevent the hinge plate from being detached from the hinge shaft. The detachment prevention portion includes a supporting portion for supporting the hinge plate when the hinge plate is fixed to the hinge shaft, and a vertical portion connected to one end of the supporting portion.

Abstract: Disclosed is a microwave oven comprising a body divided into a cooking chamber and a device chamber, a heater installed at an upper portion of the cooking chamber, a magnetron installed in the device chamber of the body, a high voltage condenser and a high voltage transformer, and a power supply cord for supplying electric power to the components installed in the cooking chamber and the device chamber. The power supply cord is extracted out of the body through an opening formed at a bottom panel of the body. The power supply cord is extracted through the opening formed at the bottom panel of the body. Thus, the damage of the power supply cord due to the heat of the rear panel of the body which is heated by the heater is prevented.

Abstract: A compact microwave oven is provided which has a top-opening, space-efficient housing. An optional container is also provided which is adapted to fit within the housing and to contain the foodstuff to be heated.

Abstract: An oven is disclosed for cooking/heating a food product. The oven has a cylindrical sidewall, a top, a microwave magnetron and a hot plate mounted below and across the bottom of the sidewall. There is an access door on the top of the oven and an opening through the hot plate. A sweeper arm is mounted on top of the hot plate for moving and mixing the food product through the oven and out of the opening.

Abstract: The present disclosure is directed to a method of converting green particles to form finished particles. The apparatus used for sintering incorporates an elongate hollow tube, an insulative sleeve there about to define an elevated temperature zone, and a microwave generator coupled through a wave guide into a microwave cavity incorporated the tube. The particles are moved through the tube at a controlled rate to assure adequate exposure to the microwave radiation. Another form sintered a solid part in a cavity or mold.

Abstract: The invention relates to a device for heat treating products by microwave radiation with a heating chamber to take the products in which the microwaves (16) can be coupled to a device (12) in the heating chamber (2) and the heating chamber (2) has at least one wall (13) which reflects the microwaves (16).

Abstract: A container sensing system for controlling the heating in a microwave oven of a container carrying control information which may be read by an optical reading device. The optical reading device includes a light transmitter and a light receiver for sensing a reflectance of a sensor. The sensor includes a first and second region. The first region is provided for establishing a start and non-start condition while the second region is provided for reading temperature information. To avoid the surface reflected portion of incident light to gain an accurate reading, the axes of transmission and reception are offset in the same angular direction to a perpendicular of a sensor surface wherein the transmitter directs an inclined reading light beam onto a region of the sensor and the receiver receives the scattered light therefrom depending on the reflection properties of the sensor region.

Abstract: A power supply cut-off apparatus of a microwave oven includes a switch box, which is pivotally opened and closed, and provided at a prescribed position of an outer panel. A power supply connection unit is provided inside of the switch box and connected detachably to three power supply wires of an electric cord. A fuse is detachably provided in fuse fixing portions disposed on one side of the power supply connection unit.

Abstract: A structure for mounting a magnetron for a microwave oven is disclosed. The structure includes a wave guide member engaged with a lower plate forming the bottom surface of a cooking chamber and guiding microwaves into the interior of the cooking chamber, and a magnetron mounted at one side of the wave guide member and providing microwaves into the interior of the wave guide member, whereby the microwaves are provided in the direction from the bottom surface of the cooking chamber to the interior of the cooking chamber, for thereby supplying the microwaves in the direction from the bottom surface of the cooking chamber into the interior of the cooking chamber.

Abstract: A high frequency heating device having a switching member screwed into a screw hole formed in a flange and fixed to the exterior. When the exterior is fixed to the body, a through-hole formed at that portion in the rear plate of the body through which the switching member passes is too large for the switching member. Thus, while the switching member is fixable to the exterior, the switching member cannot be fixed to the body onto which the exterior is not mounted. Therefore, a high frequency heating device can be provided, wherein an exterior switch more surely keeps the power supply circuit open when the exterior is removed.

Abstract: 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 cavity to provide therein a magnetron and a high voltage transformer, and a door attached to a side surface in the cavity and opening/shielding the cooking chamber to/from an exterior thereof. The microwave oven minimizes the size while maximizing the capacity of the cooking chamber, thereby decreasing the required plate number and production cost.

Abstract: A moistened towelette heating device for providing a moist hot towel for washing a user's body. The moistened towelette heating device includes a housing with a depression in the top of the housing forming a chute. The chute has an opening into a passage in the housing which, in turn, is connected to microwave oven disposed in the housing. The housing has a main opening into the microwave oven and an access door substantially closing the main opening. A plurality of canisters each with a moistened towelette disposed therein are positioned in the chute to permit passage of each canister through the passage and into the microwave oven where the canister may be heated to heat the towelette therein.

Abstract: According to a method for the heating of dielectric materials, the heat generation is done by oscillating electromagnetic radiation of one or more frequencies within the frequency range 300 kHz-299 MHz, preferably within the frequency range 1 MHz-299 MHz and best of all within the frequency range 12 MHz-200 MHz. In an apparatus for the heating of dielectric materials, preferably of organic nature, the heat is generated by oscillating electromagnetic radiation within the frequency range 300 kHz-299 MHz. The apparatus comprises a chamber (10) consisting of an upper wall (12), a bottom wall (11) and side walls (13, 14, 15, 16) made of electric conducting materials, which walls together with at least one generator (19) are connected to a common reference potential at which the generator (19) is arranged to feed at least one with the chamber cooperating antenna (17) in order to get the electromagnetic radiation in this chamber.

Abstract: A microwave oven waveguide structure which allows the use of low frequency microwaves which is sufficient for cooking, includes an indent portion in a waveguide which is mounted on one side of the inner housing and to which a microwave generated from the magnetron is transmitted, in a microwave oven having an inner housing for forming a cavity for accommodating food and a magnetron for generating a microwave.

Abstract: Disclosed is a microwave oven having a wrap film hanger. The microwave oven has a wrap film hanger for receiving a wrap film which is used for sealing an opened side of a vessel. The wrap hanger comprises a cover which is pivotably installed about a rear end thereof so that an opening formed at the upper surface of the outer panel is covered by the first cover, a support for rotatably supporting the roll of wrap film in a space formed between the first cover and an upper surface of the cabinet assembly, a first roller installed at a front inner side of the first cover, a second roller disposed below the first roller in such a manner that a nip is formed between the first and second rollers so that the wrap film is passed out through the nip, and a cutting means for cutting the wrap film when the wrap film passing through the nip is ejected from a gap formed between the first cover and the outer panel.

Abstract: A collapsible microwave oven includes a main body, a cooking chamber defined within the main body, a magnetron for radiating high frequency microwaves to the cooking chamber, a high voltage transformer for applying high voltage to the magnetron, and an electronic component case containing the magnetron and the high voltage transformer. The electronic component case is mounted on the main body to be insertable into and withdrawable from the main body, whereby the space occupied by the oven can be reduced when the oven is not in use.

Abstract: A microwave oven includes a cooking chamber and an electronic component compartment separated from one another by a partition wall. Air inlet holes are formed in an upper portion of the partition wall, and air outlet holes are formed in another wall of the cooking chamber to enable air to be circulated through the cooking chamber by a fan disposed in the electrical component compartment. First drain holes are formed in a lower portion of the partition wall diagonally opposite the air inlet holes to enable condensed moisture formed in the cooking chamber to drain into the electrical component compartment. That moisture exits the electrical component chamber through second drain holes formed in the floor of the electrical component compartment. A barrier is disposed in the electrical component compartment to surround the first and second drain holes, thereby preventing moisture from reaching any of the electrical components.

Abstract: A microwave oven includes inner and outer casings, the inner casing forming a cooking chamber, and the outer chamber encompassing a portion of the inner casing. The inner casing includes a front plate which forms an access opening for the cooking chamber. The front plate fits into the outer casing and includes flanges extending along an inside surface of the outer casing. The outer casing includes bent portions which form slits into which the flanges of the front plate are inserted. The inner and outer casings form a stop structure which positions the inner and outer casings in a predetermined relationship. The stop structure comprises tabs formed on the bent portions, the tabs abutted by the flanges of the inner casing. Alternatively, the stop structure could be formed by bent ends of the flanges which engage respective ends of the bent portions.

Abstract: The present invention relates to a retractable shelf assembly which may be easily mounted within a microwave oven cooking chamber. A pair of elongated substantially rectangular outer track members having an open end are mounted to the bottom of the microwave oven interior adjacent opposing sides. A pair of inner track members are longitudinally and slidably received within the outer track members and telescopable therefrom. A shelf with a pair of open sided channels on opposing edges is attached at an end to the inner track members and slidably engages the outer track members. The telescoping track and channel assembly allows the shelf to be slid horizontally into or out of a microwave oven as desired. A telescoping brace component vertically extends from the upper surface of the shelf component to engage the interior of the microwave thereby preventing the tray from completely sliding off the telescoping track mechanism.

Abstract: A sealing system for sealing one or more flasks (10) with a longitudinal X-X' axis, open at a first end thereof (11) for introducing a sample and positioned inside microwave apllication cavity (100) for heating the sample is described. The system of the invention comprises a cap (20) to be partially inserted in the flaask along the X-X' axis so as to close the open end thereof and retaining meaans (30) for holding the cap in a flask sealing position, wherein the portion (22) of said cap which is inserted in the flask has a peripheral skirt (23) capable of sealingly engaging the inner wall (12) of the flask under an excess pressure created therein by heating the sample with microwaves.

Abstract: A microwave oven comprises a main body, a cooking chamber and an electrical component compartment. The electrical component compartment contains a fuse housing which is mounted on a bracket to hold a fuse. Plastic coupling members are integrally mounted onto the fuse housing bracket, into which a fuse is inserted. Each coupling member includes a guide projecting integrally upwardly from the bracket. Both sides of the fuse housing contact respective ones of the guides. A protruding portion on the top of each guide forms a cam surface for spreading the guides apart, and a stop surface for preventing upward dislodgement of the fuse housing.

Abstract: The invention concerns a microwave oven having an oven cavity which is split into a movable cavity part (4) integrated into the oven door (2) and a stationary cavity part (5), sectioning the cavity when the oven door (2) is opened. The oven comprises a load carrier (6) supporting a food stuff or beverage being heated in the oven the load carrier (6) is provided in either of said cavity parts such that it protrudes from the same. Thereby access to a foodstuff or beverage in the oven is facilitated without requiring a displacement of the same.

Abstract: A microwave oven includes a power cord for supplying electrical power to electrical components of the oven. Wires of the cord are connected to a first set of terminals of a switch mounted on a main body of the oven. Electrical power is conducted from the first set of terminals to a second set of terminals of the switch by means of conductors carried by an outer panel of the oven that can be removed from the main body. The second set of terminals are connected to electrical components of the oven. When the outer panel is removed from the main body, the first set of terminals is disconnected from the second set of terminals, and an electrically insulative cover is spring biased to a position covering the sets of terminals.

Abstract: An antibiotic microwave oven for cooking a foodstuff within its cooking chamber utilizing high frequency energy, including an antibiotic layer provided to the cooking chamber for killing bacteria bred within the cooking chamber contaminated by the foodstuff being cooked and for preventing the propagation of harmful microbes. The antibiotic layer is formed of zeolite-Ag, thus killing escherichia coli, salmonella typhimurium, pseudomonas aeruginosa, and bacillus alvei.

Abstract: A body structure of a microwave oven having a cooking chamber for cooking foods includes an electronic part mounting member for mounting electronic parts thereon, a partition wall formed with the electronic part mounting member in one body therewith, and a bottom plate arranged at one side of the partition wall, thereby covering the cooking chamber at a bottom position thereof.

Abstract: An electromagnetic wave generated from a magnetron of a microwave oven is dispersed into the cooking chamber from an opening through a waveguide. A first plurality of ring-shaped steps are formed radially on a top wall inside the cooking chamber. One ring-shaped step with a larger radius of the first ring-shaped steps is lower in height on the basis of a bottom surface of the cooking chamber than another ring-shaped step with a smaller radius, and a central part with the opening is highest in height. A second plurality of ring-shaped steps are formed radially on a bottom face inside the cooking chamber. The waveguide is provided with a third plurality of ring-shaped steps capable of maintaining a maximum electromagnetic field energy. Thus, the microwave is impartially dispersed while maintaining the maximum electromagnetic field energy in the cooking chamber and in the waveguide, and the cooking efficiency is largely improved.

Abstract: A microwave oven is disclosed, in which the edges of the opening between the cooking chamber and electrical component compartment are bent, thereby strengthening the side panel on which the opening is formed and also forming half of a joining means which connects a cover plate to the opening. The cover plate includes hooked catches(the other half of the joining means) and flexible sealing members that lie flush against the side panel when the cover plate is installed. The elasticity of these sealing members allows them to maintain a tight seal even if the shape of the side panel becomes distorted during the assembly of the microwave.

Abstract: A microwave oven includes a housing forming a cooking chamber and a compartment next to the cooking chamber for containing various electrical components. A power supply cord extends from the compartment through a cord hole in a back side of the housing to supply power to the electrical components. A heater, fan and fan motor are disposed adjacent a rear portion of the cooking chamber for performing a convection cooking operation, whereby a hot zone on the rear side of the housing located directly behind the cooking chamber may be heated to a temperature capable of damaging the cord if coming into contact therewith. An element is screwed to the back side of the housing below the cord hole to contact a portion of the cord located exteriorly of the housing to physically isolate the cord from the hot zone.

Abstract: A microwave oven includes a power cut-off safety switch which automatically cuts-off the supply of electric power to the oven if a housing panel is removed while the electric power supply cord is still plugged in. The switch is engaged by an extension of the housing panel which extends through a guide hole formed by another housing panel. The guide hole can have a non-planar shape to resist efforts to insert objects through the guide hole.

Abstract: A microwave oven includes a safety mechanism which automatically cuts off a supply of electric power to the oven when a panel of the oven housing has been removed, even if the power supply cord is still plugged in. The safety mechanism includes a switch disposed on the housing for cutting off the power. A cover for the switch is movable between a first position covering the switch, and a second position exposing the switch. The switch is biased to a power-cut-off position and the cover is biased to the first position. A structure of the panel is arranged to automatically move the cover to its second position, as well as to move the switch to a power-supply position, in response to the panel being in an assembled state. When the panel is removed, the switch automatically cuts off the electric power, and the cover moves to the first position covering the switch.

Abstract: The present invention relates to a ground structure of a printed circuit board in a microwave oven, where the microwave oven formed with a screw hole at a tip end of a bar extended from a body thereof and having a jumper wire connected to a ground pattern at around a screw hole formed at a printed circuit board while a bolt is screwed to a control panel through a screw hole formed at the tip end of the bar and through a screw hole formed at the printed circuit board are connected by the jumper wire, so that the printed circuit board is automatically connected and grounded to the body of the microwave oven when the printed circuit board is fastened to the control panel, thereby providing a convenience in assembly of the microwave oven and a stability thereto.

Abstract: A microwave oven includes an electric power supply shut-off mechanism for cutting off the supply of electric power when the housing is disassembled for repair while an electric power cord remains plugged into an electric outlet. A sensor in the form of a light sensitive semiconductor and/or a piezoelectric crystal senses when panels of the oven housing are removed and thereupon causes a controller to actuate a solenoid which deactivates a safety switch for cutting off the supply of electric current.

Abstract: A method and apparatus for liquid thermoset resin or polymer molding using electromagnetic waves (particularly radiofrequency waves or microwaves), is described. The method and apparatus uses a metal mold (10, 212) with a cavity (401) for the molding as well as for confinement of the electromagnetic waves. Multiple low loss ports (A, B, C, D, E, p1, p2, p3) are provided for introducing the microwaves into the cavity.

Abstract: An upward and downward movement prevention structure for a microwave oven which is capable of more effectively preventing an upward and downward movement of a door panel when moving the microwave oven by forming movement prevention protrusions and movement prevention protrusion insertion grooves in the side surface of the door panel and a portion of the control panel which portion is matched with the side surface of the door panel in which the movement prevention protrusions are formed. The structure includes a main frame, a door panel disposed in a front surface of the main frame, a control panel disposed beside the door panel, at least more than one movement prevention protrusion means formed in one side surface of the door panel, and at least more than one movement prevention protrusion insertion groove means formed in one side surface of the control panel, said side surface of the control panel being matched with the side surface of the door panel.

Abstract: A heating apparatus such as a microwave oven includes a magnetron and a heating chamber for accommodating food to be heated by microwaves generated by the magnetron. The heating chamber has a front opening opened and closed by a door. An operation panel is mounted to be adjacent to the door. The operation panel includes a panel section and an operation section mounted on the panel section and has a function of displaying a plurality of pieces of cooking information. The operation section includes a liquid crystal element subsection including a nematic curvilinear aligned phase (NCAP) liquid crystal permitting light to pass through it when voltage is applied to it, an indicia subsection laid on the liquid crystal element subsection and having a plurality of indicias corresponding to the pieces of cooking information, respectively, and a switch subsection including a plurality of switches corresponding to the indicias of the indicia subsection, respectively.

Abstract: A microwave applicator of microwave reflective material having a closed first end, four side walls and, in a first embodiment, an open second end spaced apart from and facing a ground plate, the ground plate extending in a pair of transverse directions and having a longitudinal direction perpendicular thereto, and in a second embodiment, a closed second end, the applicator forming a cavity containing a desired hybrid mode having a low wave impedance in the longitudinal direction and an absence of an E field component in one of the transverse directions.

Abstract: A microwave oven includes a housing formed by relatively separable first and second panels. Electric switches are mounted on the first panel and are connected to respective wires of the power cord by the oven. Each switch includes a movable contact which moves away from a respective fixed contact when the panels are separated from one another, in order to automatically cut off the supply of electric power to the oven in the event that the worker forgets to unplug the power cord. When the panels are reconnected, the switches are automatically closed. Such automatic closing can be caused by magnetic force produced by magnets carried by the second panel. Alternatively, the automatic closing can be caused by screws carried by the second housing and which physically push respective movable contacts against their associated fixed contacts.

Abstract: An improved microwave oven main body structure capable of more easily assembling an outer plate and an inner plate of the main body by providing a support member to the outer plate, so that the support member is engaged with the outer plate of the main body, which includes an outer plate having a bottom wall, a front wall, and a rear wall; a support member formed on the bottom of the outer plate; and a front- and rear-portion-opened inner plate engaged to the interior of the outer plate and having an outwardly extended side wall; wherein the lower surface of a flange formed at the lower portion of the side wall of the inner plate which is downwardly extended contacts with the upper surface of the bottom of the outer plate.

Abstract: A microwave oven includes a case forming a cooking chamber, and an outer panel mounted to the case. The outer panel is to be separated from the case when performing certain maintenance or repairs. Electrical terminals are mounted on the case and outer panel to perform the function of automatically disconnecting power to the oven in response to removal of the outer panel. A first arrangement of terminals can be provided for performing that function in the event of a removal of the outer panel in an upward direction. A second arrangement of terminals can be provided for performing that function in the event of a removal of the outer panel in a rearward direction.

Abstract: A microwave oven with built-in food covering mechanism, the microwave having a body defined by a top, bottom, sides and rear. A door is hingedly connected to the body and is opened to reveal an open interior of the body. A covering member is suspended within the oven interior and is operably connected to an electric motor built into the microwave body. The motor includes a rotating gear head which rotates in one of two directions to either wind or unwind the cord to either elevate or lower the covering member within the interior. A microprocessor energizes and deenergizes the motor and is operated by any of a selection of spring loaded, pressure actuated or sensing switch assemblies within the microwave interior.

Abstract: A microwave oven includes a cooking chamber, a magnetron for performing microwave cooking, and an electric heater element disposed in the cooking chamber for performing convection heat cooking. The heating element is rotatable between vertical and horizontal positions. A heater handling device is connected to the heating element and includes a handle situated outside of the oven for enabling a user to rotate the heating element from outside of the oven.

Abstract: A system and apparatus for reducing arcing and localized heating as a result of applying microwave energy to a microelectronic substrate having electronic components thereon is provided. A microwave furnace having a chamber is configured to secure a microelectronic substrate therewithin. The microelectronic substrate is electrically interconnected with a ground connected to an interior wall of the microwave furnace. A holder for securing a microelectronic substrate during the application of microwave energy and for providing the necessary electrical connections for grounding components and circuitry thereon is also provided. The holder may have a heat sink for protection against heat build-up and for maintaining a microelectronic substrate in a substantially flat orientation during microwave processing.

Abstract: There is provided a microwave waste sterilizer comprising an upper outer shell, a lower outer shell, an upper means for guiding microwave energy, a lower means for guiding microwave energy, an upper means for dispersing microwave energy, and a lower means for dispersing microwave energy. There is also provided a method for sterilizing waste materials with dual sources of microwave energy. Further there is provided a method for dispersing microwave energy into a chamber such that the dispersed microwave energy creates a flux field of substantially uniform flux.

Abstract: A microwave oven includes a cooking chamber in which either microwave cooking or hot air convection cooking can be performed. A cooling chamber is situated rearwardly of the cooking chamber for housing a motor and cooling fan. A rear cover of the cooling chamber includes air intake and air exhaust holes formed therein for circulating a cooling air flow produced by the fan. The cover includes a vertical central surface in which the air intake holes are formed, as well as additional surfaces extending obliquely forwardly from respective edges of the central surface. The additional surfaces include a top surface, a bottom surface, and right and left side surfaces. Each of those additional surfaces, except for one of the side surfaces, includes air exhaust holes. Each of the air exhaust holes includes a rearward projection extending thereabove to resist the entry of water.

Abstract: A microwave oven includes a main body forming a cooking chamber, and a door hinged to the main body for opening and closing the cooking chamber. The main body includes upper and lower horizontal walls forming a top and bottom, respectively, of the cooking chamber. The door is mounted by two hinges, each hinge comprising a pivot pin carried by the door, and a hinge plate carried by the main body. Each hinge plate includes a door-connecting section and a body-connecting section interconnected by an intermediate section. All three of those sections are integrally formed on a one-piece element. The door-connecting section is at a higher elevation than the body-mounting section and includes a hole rotatably receiving the pivot pin. The body connecting section is directly connected to a respective one of the upper and lower horizontal walls. The door carries a stop element which abuts a vertical edge of a respective hinge plate when the door is in an open state.

Abstract: A microwave oven in which a plurality of projections are formed on an interior surface of a cavity for reflection and distribution of microwaves. The plurality of projections are dispersedly arranged so that neighboring projections do not contact each other. With this arrangement, microwaves can be efficiently distributed within the cavity, since the interior surface of the cavity does not have any depressions which would converge microwaves.

Abstract: A microwave oven with built-in food covering mechanism, the microwave having a body defined by a top, bottom, sides and rear. A door is hingedly connected to the body and is opened to reveal an open interior of the body. A covering member is suspended within the oven interior by a length of cord which extends through the top of the oven and is connected to an electric motor built into the microwave body. The motor includes a rotating gear head which rotates in one of two directions to either wind or unwind the cord to either elevate or lower the covering member within the interior. A microprocessor energizes and deenergizes the motor and is operated by either a key entry and a program memory or by a lever arm switch and limit switch assembly within the microwave interior.