Abstract: Apparatus and methods are disclosed for a safety door of an oven having glass therein with a plastic laminate. The safety door retains glass within the door in order to prevent glass from falling or being forced outside of the oven, which may cause injury.

Abstract: A radiopharmaceutical heater includes a heat-transfer member having a receptacle defined therein to receive a container (e.g., a vial). The heat-transfer member has a thermal conductivity greater than about 100 W/(mK) A radiation shield is disposed about the heat-transfer member wherein the radiation shield comprises lead, tungsten, tungsten-impregnated plastic, depleted uranium, or any combination thereof. A heating element is in thermal communication with the heat-transfer member wherein at least a portion of the heating element is located within the radiation shield. The heater includes compliant heat-transfer member shaped to receive the container.

Abstract: The present invention relates to a wave choke device for an oven door of a microwave oven. The wave choke device includes a front shielding comprising at least one conductive material and a wave trap forming a channel with one at least partially open side, which wave trap is arranged on at least one outer portion of the front shielding and comprises at least one conductive material. The wave choke device includes further a plurality of lamellae arranged uniformly in the at least partially open side of the wave trap, which lamellae comprises at least one conductive material. The wave choke device comprises one single piece made of a perforated material, wherein said one single piece includes at least the front shielding and the wave trap. The present invention relates further to a corresponding oven door and a corresponding microwave oven.

Abstract: A method, apparatus, and computer usable program code for detecting a presence of metal objects placed in a microwave cooking unit. A metal detection unit is activated to scan for the presence of a metal object placed into a cooking area of the microwave cooking unit. In response to receiving an indicator of the presence of a metal object from the metal detection unit, the process generates an alert indicating the presence of the metal object.

Abstract: A magnetron is provided including a yoke having an internal space, a first magnet provided at one end of the internal space, a second magnet provided at a second end of the internal space, the second magnet being axially spaced from the first magnet. Further, an anode cylinder that generates radio frequency energy may be provided axially between the first and second magnets, a first pole piece and a second pole piece may be provided proximate first and second openings of the anode cylinder, respectively. Additionally, the magnetron may also include a seal that intercepts external leakage, the seal may have an inward protrusion extending axially towards the anode cylinder; and a choke filter that intercepts external leakage provided proximate the seal.

Abstract: A microwave oven protective circuit arrangement is disclosed to include a cutoff switch electrically connected between a power supply unit and a microwave oven for controlling the supply of electricity from the power supply unit to the microwave oven, and a detector provided outside the microwave oven to detect leakage of the microwave produced by the microwave oven and to output a cutoff signal to the cutoff switch to cut off electricity from the microwave oven when detected a leakage of the microwave.

Abstract: A rice cooking system for a microwave oven comprises an inner cooking container for containing rice and rice cooking water, main outer container holding the inner container with a space in between their side surfaces, a lid covering the outer container, and a foam control sheet having a plurality of small holes 52 and supported between the outer container and the lid. The inner cooking container is made of metal and has a folded or rolled a rim. A step at the bottom of the outer container locates the inner cooking container so that its outer wall is spaced from the outer container.

Abstract: Container designed to contain a product having to be heated by applying microwaves, the container having a side wall (10) and an end wall (12) formed by a base or a lid and means (10A) for limiting the penetration of the microwaves through the side wall (10), compared with the penetration of the microwaves through a central region of the end wall (12). Advantageously, the container according to the invention further comprises means (12A) for concentrating the microwaves in a central region of the end wall (12), the said means being formed by an excess thickness of a dielectric material, the dielectric constant of which is at least equal to 1.5, preferably greater than 2.

Abstract: Disclosed is an antenna radiation heater (2) to heat material using molecular resonance. A plurality of surface antenna elements (3), each having a carrier surface material (11) and a radiation coating (10) applied thereon are connected by two spaced apart electrical conductors (14, 15) in parallel, with electrical contacts as antenna limiters and with which high-frequency electromagnetic radiation can be emitted. The antenna (2) includes a harmonic generator, coupled to electrical conductors (14, 15) of element (3) for excitation of the coating (10) for emitting an oscillation spectrum within the range of natural molecular frequencies of the material being heated. The radiation coating (10) is unilaterally applied to the carrier material (11) and forms an element front facing the material being heated.

Abstract: A method for controlling heating and avoiding arcing in microwave food packaging having a conductive material such as a metal foil on the packaging by controlling the cross-sectional shape of the foil to have a predetermined shape at the edge portion of the foil including controlling a wedge angle and a corner radius of the edge of the foil.

Abstract: Using a new compound to produce a magnetic tape having low electrical resistivity and high magnetic absorptivity. The magnetic tape self-adheres around a cabinet door opening such that when a cabinet door is closed, the magnetic tape provides an EMI seal with low electrical resistivity and high magnetic absorptivity. In addition, the magnetic tape electrically connects the door to the cabinet. To achieve greater EMI shielding, separate magnetic tape pieces can be positioned on both the cabinet and cabinet door. The compound is of a magnetically lossy Manganese-Zinc (soft ferrite material) having a complex permeability plus cobalt, nickel, or iron (ferromagnetic materials). The Manganese-Zinc material may be Product 3S1, 3S4, 3C11, 3E25 or 3E27 manufactured by the Phillips Corporation of The Netherlands which is readily commercially available.

Abstract: A technique for passive suppression of arcs within a microwave frequency waveguide section. The waveguide is configured to have a bend at a point where the naturally, relatively high location occurs within the run. The bend at the high point causes arcs to be trapped as heat naturally collects within the waveguide at such predictable locations. Vent holes formed in the exterior portion of the waveguide at this point allow trapped hot air gases to escape, and cause the arc to be drawn towards the sidewall of the waveguide at a point where the voltage approaches zero. Presenting this region of zero voltage to the arc causes the arc to extinguish itself.

Abstract: A radio wave absorbent comprises an Ni--Cu--Zn base ferrite having a major composition comprising 49 to less than 50 mol % of Fe.sub.2 O.sub.3, 32 to 35 mol % of ZnO, 3 to 9 mol % of CuO and 9 to 14 mol % of NiO. The radio wave absorbent further contains an additive molybdenum oxide in an amount of greater than 0 to 0.10 wt %, calculated as MoO.sub.3, with the proviso that the total amount of the major composition is 100 wt %. The radio wave absorbent may be used as an exterior or interior material for a building or structure.

Abstract: A metal container which can be utilized in a microwave oven has an interior and an exterior defined by a bottom and at least one side wall. Each side wall has a height which does not exceed 40 percent of the wavelength of the microwave radiation. The container is adapted to receive an object into its interior through an open top. Microwave-transparent electrical insulation is disposed on each side wall and on that part of the bottom which would, in the absence of insulation, contact the floor of the oven. This microwave transparent electrical insulation may be a coating on the metal, a label, or a sleeve placed around the container. A microwave transparent, electrically-insulating cap is removably disposed at the top of the container. The top of the container also may have a removable seal disposed thereon. Also, a method for storing an object, then subjecting the object to microwave radiation comprising first placing the object in the removably sealed metal container.

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: An 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: A method of sterilizing an object having the steps of providing a container with an exterior surface that has a microwave interactive layer and defines an interior space having an initial temperature. An object is then placed within the interior space of the container. Next, the microwave interactive layer is exposed to a first amount of microwaves so that the layer produces heat which raises the temperature within the interior space to a predetermined sterilization temperature. The predetermined sterilization temperature is then maintained within the interior space for an amount of time sufficient to sterilize the object.

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: A microwave sterilization system including a microwave oven having a microwave source that produces microwave radiation. The oven encloses a first chamber and a second chamber. Each chamber has a pouch containing an object and is positioned therein so as to be exposed to the microwave radiation, wherein each pouch has an interior which contains the object corresponding to that pouch. The system further includes a sensor system for detecting the temperatures of said both interiors and produces signals representative of those temperatures. Those signals are sent to the microwave source so as to control the emission of microwave radiation from the microwave source.

Abstract: A heat pack including a flexible water-tight plastic bag, saturated sodium acetate solution contained in the plastic bag, and an activator disposed in contact with the saturated sodium acetate solution and operated to activate the saturated sodium acetate solution, causing the saturated sodium acetate solution to crystallize, wherein the activator is covered within a plastic shell. According to another embodiment of the invention, the activator is a metal plate having a frosted outside wall.

Abstract: A protective enclosure is provided for a laser system having a laser generator for generating and directing a laser beam to a laser workstation. The enclosure includes a housing having an inner cavity for containing the laser workstation. The housing further includes a section having an opening through which workpieces pass into and out of the inner cavity. The enclosure additionally includes a rotary turntable for moving the workpieces through the opening into and out of the inner cavity, and passive sealing members movably coupled to the section for sealing a portion of the rotary turntable with a portion of the section to inhibit laser energy from exiting the housing through the opening.

Abstract: An electromagnetic wave heater comprises an electromagnetic wave generator a wave guide being connected to the generator for guiding the generated electromagnetic wave to be propagated in a uniform direction, at least one container being provided in the wave guide for accommodating an object to be heated up by irradiation of the electromagnetic wave, the container having at least one tapered portion, a pointed end of which faces to a direction of the propagation of the electromagnetic wave in the wave guide.

Abstract: A case for use in disinfecting soft contact lenses including a pair of lens-receiving compartments formed by a first pair of substantially dome-shaped members mounted on a first cover member and a second pair of substantially dome-shaped members mounted on a second cover member. The dome-shaped members shield the interior of the lens-receiving compartments from microwave radiation when the case is used in a heat disinfecting process in which microwave radiation is utilized. The dome-shaped members of the first and second pairs are adapted to be brought into contiguous relationship to thereby form the pair of compartments.

Abstract: A protective enclosure is provided for a laser system having a laser generator for generating and directing a laser beam to a laser workstation. The enclosure includes a housing having an inner cavity for containing the laser workstation. The housing further includes a section having an opening through which workpieces pass into and out of the inner cavity. The enclosure additionally includes a rotary turntable for moving the workpieces through the opening into and out of the inner cavity, and passive sealing members movably coupled to the section for sealing a portion of the rotary turntable with a portion of the section to inhibit laser energy from exiting the housing through the opening.

Abstract: The present invention features a UV tube detector for sensing a resonant arcing condition in a microwave environment. Where clothing or fabric is being dried in a magnetron-powered, microwave chamber, the UV tube detector is placed in proximity to the fabric. The UV tube detector senses a possible resonant arcing condition related to small metal objects hidden in the material. Upon the sensing of arcing, the UV tube provides a signal for shutting down the magnetron power. In conjunction with UV detection, the moisture condition can be monitored during the drying cycle. At a point in the microwave heating cycle consistent with an "end of microwave heating cycle" or "near dryness", the power output of the magnetrons is reduced or terminated. The moist fabric can then be dried via reduced microwave heating and/or by normal heating methods, including, but not limited to, electrical radiant heating and convection techniques.

Abstract: A method for making a photographic composition gel ready for use in production from a good preservative frozen state, causing no change in photographic properties, wherein a photographic composition gel is melted to a sol by placing a light shielding dielectric preservative container holding lumps of a photographic composition gel in a dielectric heating apparatus which generates high frequencies capable of penetrating to a depth corresponding to the size of the above photographic composition gel lumps, and melting the photographic composition gel to a sol by irradiating the lumps of gel with the above high frequencies from the outside of the container.