Abstract: A method for securing components of a vehicular driveshaft includes disposing a neck of an end fitting into the open end of a driveshaft tube. The end fitting is held with respect to the driveshaft tube so that an annular gap is formed between the neck and the driveshaft tube. An inductor is provided about the driveshaft tube adjacent the end receiving the neck. The inductor is energized to generate a magnetic field for collapsing the driveshaft tube about the neck at a high velocity so that the driveshaft tube and the end fitting are welded to each other.

Abstract: The invention is of a portable stripping head induction heating system and associated method of use thereof which system and method is useful in heating metallic components to which protective coatings or linings are applied for enabling their easy removal.

Abstract: A compact induction heating system that is at least partially powered by a source of substantially clean DC current. The induction heating system includes a high frequency inverter with an input connected to a substantially clean DC current source, a first current conductive path including a first capacitor and a first switch closed to cause one half cycle of AC current to flow in the first path by discharging the first capacitor, a second current conductive path including a second capacitor and a second switch closed to cause a second half cycle of AC current to flow in the second path by discharging the second capacitor, a single load inductor in both of the paths with AC current flowing in a first direction through the inductor when the first switch is closed and in a second opposite direction through the inductor when the second switch is closed, and a gating circuit to alternately close the switches at a driven frequency to control heating by the load inductor.

Abstract: A compact induction heating system for use on an internal combustion engine driven implement having an engine driven alternator to generate DC current for storage in a battery used as a source of clean DC current of less than 50 volts for ignition of fuel in the engine, the system comprises a high frequency inverter with an input connected to the clean DC current source, a first current conductive path including a first capacitor and a first switch closed to cause DC current to flow in the first path and across the first capacitor, a second current conductive path including a second capacitor and a second switch closed to cause DC current to flow in the second path and across the second capacitor, a single load inductor in both of the paths with DC current flowing in a first direction through the inductor when the first switch is closed and in a second opposite direction through the inductor when the second switch is closed and a gating circuit to alternately close the switches at a driven frequency to contro

Abstract: A method for providing a microwave-shield on the cover member of a microwavable food tray having different foods therein requiring different degrees of microwave irradiation is provided. The method includes providing an adhesive label directly to a cover member of the food tray in register with one of the food products in the tray. The cover member is provided on the food tray from a sheet of cover material having a plurality of microwave shields pre-applied thereto at discrete intervals.

Abstract: An oven includes both radiant cooking elements and a microwave cooking element that are controlled to reduce cooking time in relation to known radiant ovens. The oven is operable in a speed cooking mode utilizing radiant and microwave cooking elements, a microwave cooking mode utilizing only the magnetron, and a radiant cooking mode utilizing only radiant lamps. In addition, and using a time adjustment algorithm, the total energy into the food is maintained constant for input voltages in a range between about 108 Volts and 132 Volts to suitably cook food even when the input voltage varies.

Abstract: A bipolar electrosurgical instrument useful in harvesting blood vessels such as veins and arteries. The instrument has a pair of jaws and a central cutting element displaceable distally and proximally to dissect tissue contained between the jaws. The central cutting element has an electrode surface.

Abstract: In one aspect, a microwave oven comprising an outer case, a door secured to the outer case, and a turntable supported in the case but extending beyond a case front face is described. In an example embodiment, the outer case houses a portion of a cooking cavity, and the cooking cavity is partially defined by a bottom inner wall, a top inner wall, and side inner walls of the case. The door is secured to the case, and the door comprises an inner wall comprising a recessed portion. The oven further includes an RF energy source for supplying RF energy to the cooking cavity, a controller coupled to the RF energy source for controlling supply of RF energy to the cooking cavity, and a user interface coupled to the controller.

Abstract: The invention provides a convection type brazing apparatus for metal workpieces such as aluminum, copper, iron and so forth that enables uniform heating of the metal workpieces to prevent deformation of the workpieces and can shorten a heating time to achieve a higher operation efficiency. A heating medium gas heated by a tube heater 36 in a thermal medium gas heating chamber 45 is forwarded by a fan 37 to manifolds 41A and 41B located on both left and right sides, to be blown through a multitude of nozzles 43 toward workpieces W to which a brazing material and flux have been applied in advance. Once the workpieces temperature has reached a predetermined temperature for brazing, a switching valve located in an upper duct 48 is activated so that the heating medium gas is intermittently blown to the workpieces. As a result, a temperature slope of the workpieces is minimized and uniform brazing can be performed.

Abstract: Gastight and vacuum-tight chamber intended to be used in a device for heating a product advancing inside the chamber by electromagnetic induction, characterized in that it comprises a gastight and vacuum-tight sheath made of an electrically insulating, gastight and vacuum-tight material, the inner faces of the sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the matrix of tiles.

Abstract: A portable microwave oven, formed by a hollow prismatic body (10) defining an internal cooking chamber (20) formed between a first polygonal base (30) and a second polygonal base (40) of said body (10) and a peripheral lateral wall (50), the first polygonal base (30) externally defining a first seating surface (31) of the oven, the second polygonal base (40) being at least partially defined by a tiltable door (60) that gives access to the cooking chamber (20), the peripheral lateral wall (50) defining, in part of its extension, a second seating surface (52) of the oven, the cooking chamber (20) being provided with a first product supporting surface (21) and a second product supporting surface (22) in a position usually displaced in 90 degrees in relation to the operative position when using the first product supporting surface (21).

Abstract: In order to reduce reflected waves and improve heating matching, a microwave heating apparatus is equipped with at least one cone-shaped, bell-shaped, pyramid-shaped or similarly shaped waveguide, a reflector apparatus provided inside the waveguide, and a reflection diffusion apparatus provided inside the oven.

Abstract: A microwave oven includes a saucer holder, and a saucer used with the microwave oven. The saucer holder is provided on the external surface of the microwave oven. The saucer removably engages with the saucer holder. Thus, the microwave oven allows a user to easily carry a heated cup after a cooking process.

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 microwave oven having an improved air outlet and humidity sensor mounting structure includes a body partitioned in its interior into a cooking cavity and a machine room, and a cooling fan installed in the machine room which draws atmospheric air into the cooking cavity while cooling a variety of elements installed in the machine room. In the microwave oven, an air outlet unit discharges air from the cooking cavity, and the humidity sensor senses a cooking atmosphere of the cooking cavity. This microwave oven further comprises a control unit which determines the conditions of food in response to automatically or manually inputted information, and controls the rpm of the cooling fan in response to the determined conditions of the food so as to improve the sensing performance of the humidity sensor.

Abstract: The invention relates to an apparatus and a method for heating a workpiece of an inductively heatable material, for example a turbine blade. Such a turbine blade consists of a massive blade base and a low-mass blade leaf. To enable the blade base and blade leaf to be heated in a manner appropriate to each an induction coil is provided, which surrounds the blade base and the blade leaf. By suitable choice of the alternating currents which flow through the induction coil and/or through the interposition of a susceptor between turbine blade and induction coil, the blade base and blade leaf can be heated in an appropriate manner.

Abstract: A device for heating a roll in a paper or paperboard machine or in a finishing machine for paper or paperboard the device including a profiling induction heater (5) which is arranged to heat the roll (3) with a power dependent on the location of the point to be heated in the axial direction of the roll, and a non-profiling induction heater (4) which, to provide basic heating, is arranged to heat the same roll (3) with a heating power which is substantially even over the width of the roll (3). The profiling induction heater (5) and the non-profiling induction heater (4) are placed in the same support structure (1) outside the roll (3). The roll (3) is a calender roll.

Abstract: A wall-mounted type microwave oven includes a guide device which guides steam and fumes generated therebelow toward an exhaust duct of the microwave oven. The guide device includes a plurality of guide pieces with gaps therebetween so as to bend the guide device in response to the guide device being pulled out of an oven body of the microwave oven. The guide pieces are connected to each other by corresponding link units. Each of the link units includes a pair of hinge pins fixed to the adjacent guide pieces, and a link connected to the adjacent hinge pins. Where the guide device is extended forwarded from the oven body, a front end of the guide device is bent forward and downward. Accordingly, an exhausting efficiently of the microwave oven is improved.

Abstract: A microwave oven effectively and uniformly cooks large-sized food even though the food inhibits a proper rotation of a cooking tray in a cooking cavity of the microwave oven. An upper wave dispersing unit is provided at a top wall of the cooking cavity and primarily disperses microwaves from the top wall into the cooking cavity. A side wave dispersing unit is provided at a second sidewall of the cooking cavity opposite to a first sidewall of the cooking cavity. The first sidewall partitions the cooking cavity from a machine room of the microwave oven. The side wave dispersing unit secondarily disperses the primarily dispersed microwaves in the cooking cavity. The second sidewall of the cooking cavity has a recess which receives a fan of the side wave dispersing unit. A cover is installed in front of the recess to cover the fan of the side wave dispersing unit. The cover is made of a transparent material and allows a user to view a rotational operation of the side wave dispersing unit.

Abstract: A microwave oven includes two doors which primarily and secondarily prevent a leakage of microwaves from a cooking cavity during a cooking operation. A first door is rotatably hinged to a front wall of a cabinet of the microwave oven, so as to open and close an opening of the cooking cavity and primarily prevent the leakage of the microwaves from the cooking cavity. A second door is rotatably mounted to the cabinet in front of the first door to cover and uncover the front of the first door. The second door thus secondarily intercepts the microwaves which have leaked from the cooking cavity through a gap between the first door and the cabinet. The microwave oven effectively prevents almost all leakage of the microwaves from the cooking cavity during the cooking operation.