Abstract: A heater device for hair curlers has an upper hood and a lower casing forming a disposing space for hair curlers. A disposing seat is installed inside the disposing space and multiple heater supports having the same number as the hair curlers are installed on the disposing seat. A heater part is installed on the heater supports. The heater part has a heater element coupled to an external power source and generating heat, and multiple heat-conducting elements overlaying the heater element to receive the heat from the heater element and to increase heat-conducting area. The hair curlers hood the heat-conducting elements in order to achieve a rapid and uniform heating.

Abstract: Methods for forming electrically conductive heated dielectric panels are provided. The panels are utilized for warming objects and/or insuring unobstructed viewing through the panels by removing moisture. The methods include depositing electrically conductive metal bus bars onto the dielectric panel, onto which panel a conductive coating has previously been disposed. The conductive metal bus bars are deposited onto the coated dielectric panel through the use of a circularly rotating or an inline heating head and mask apparatus, in combination with an oxyacetylene or a plasma device. A metallic tab, which extends from the panel peripheral edge, is brought into electrical contact with each conductive metal bus bar for external electrical connectivity.

Abstract: A radiant source for heating a workpiece such as a semiconductor wafer includes a plurality of radiant heating elements, arranged in an array that is generally concentric about a source center axis. A reflector has a reflecting surface that bounds a cavity or channel that contains the heating elements, the reflector comprising walls that extend around the center axis and that are finished for reflecting radiant energy emitted by the heating elements to a region occupied by a wafer. The channel reflecting surfaces comprise at least a part of a plane and/or cylinder and/or a cone and/or a convex to the heating elements curved surface of revolution bordering or spanning two or more adjacent heating elements.

Abstract: A retaining device of a heat blower comprises two sliding grooves and two wings. Each of two sides at a rear end of a casing of the heat blower is formed with one of the two sliding grooves. Each of an upper and a lower ends of each wing has an elastic hook, respectively. By pressing the elastic hooks. The wings are embedded into respective sliding groove, and the wings are slidable with respect to the sliding groove. The wings can be pushed to move outwards to predetermined positions so as to increase the coverage and stability of the heat blower. The wings can be pushed inward along the sliding grooves for operation as being held by a user or for storage.

Abstract: In an iron tip for a soldering iron, composed of Fe plated copper or copper alloy, an outer surface excluding a solder coating portion in a leading end portion of the iron tip is plated with Cu in a film thickness range of approximately 10 to 50 &mgr;m, the surface is coated with a mixture of Al particles and flux, only the Al particles are melted in an inert gas atmosphere, and the surface is modified into a surface with a Cu—Al alloy coated layer having a high Al concentration. As a result, without using Cr plating, it is possible to provide an electric soldering iron having an excellent resistance to oxidation under high temperature environment and a high heat conductivity.

Abstract: A method and apparatus for conditioning air includes conditioning units that are removably attached together. The conditioning units may be separated from each other and individually perform conditioning functions, such as air moving, heating, humidifying or cooling.

Abstract: An electro-welding device for electrically welding plastic elements together, comprising: a power source for having an AC current in circulation, an electrical converter AC/DC, heating means electrically connected to the converter for heating the weldable elements, electrical regulating means interposed between the electrical converter and the heating means, the electrical regulating means comprising switching means having successive electrically passing and electrically non-passing phases, the electrical regulating means being subjected to the switch-over rhythm of said switching means for generating a switched over electrical signal.

Abstract: A portable dryer includes a housing, a motor installed with a fan inside the housing, an electric heating device electrically connected to the motor for generating heat, a switch electrically connected to the motor, and a battery for supplying electric power to the portable dryer. When the switch is turned on, the battery can supply electric power to the motor and the electric heating device, making the electric heating device generate heat and the motor drive the fan and thus blowing out hot air generated by the electric heating device.

Abstract: A hair-curling roller heating system including a plurality of rollers supported on posts heated by both a resistive heating plate and a halogen bulb which emits both visible light and radiant heat in the form of infrared radiation. The posts have open top ends and the rollers have differently colored translucent upper tips which receive light from the posts and thereby identify different types of rollers.

Abstract: A process and device for noninvasive measurement of cerebral blood flow simultaneously determines of a blood flow index which is directly proportional to the blood flow. Cerebral surge kinetics of an intravenously injected indicator dye with absorption properties in the near-infrared spectrum is sensed by near-infrared spectroscopy and the arterial surge kinetics is sensed by pulse densitometry. A device for carrying out this process consists of a multichannel apparatus having at least two near-infrared spectroscopes, each having two pulsed monochromatic light sources, a measuring and a reference wavelength, in the range of the near-infrared spectrum; one or more light sensors connected to a photomultiplier; and a noninvasive measuring device which determines, by pulse densitometry, the concentration of the tracer in the arterial blood of the circulatory system.

Abstract: A system for generation of steam for injection into a plurality of well bores in an oil field to improve the oil recovery from the oil field, wherein the system comprises a plurality of electric powered steam-generating units, each unit delivering steam for injection into a one well bore or a number of geographically close well bores, is described. Also described is steam-generating unit for the system and a use of a plurality of electric powered steam-generating units for generation of steam for injection into a plurality of well bores in an oil field to improve the oil recovery from the oil field.

Abstract: A method of joining a first pipe of a plastic material to a second pipe of a material which does not bond well to the plastic material, utilizes an electrofusion sleeve of a plastic material which bonds well to the plastic material of the first pipe and having a first coil of electrical heater wire on the inner surface at one end of the sleeve to receive the first pipe and a second coil of electrical heater wire on the inner surface at the opposite end of the sleeve to receive the second pipe. The opposite end of the sleeve includes a bonding material capable of producing a good bond, when activated by heat, between the materials of the sleeve and of the second pipe. The two pipes are inserted into the two ends of the sleeve, and electrical current is applied to the two coils to cause the first end of the sleeve to bond by electrofusion to the first pipe, and the second end of the sleeve to bond by electrofusion and by the bonding material to the second pipe.

Abstract: A method and apparatus heats a thin sheet of material prior to subjecting the sheet to a process for forming the sheet into a desired shape, such as by vacuum forming. The sheet is supported in a generally horizontal manner during transport through the apparatus, for example on a pair of conveyor chains or belts which carry and provide support to the longitudinal edges of the sheet by gripping same. The sheet is heated from above and below by heating elements and a diffuser plate is located between the upper and lower heating elements, and beneath the downwardly facing side of the sheet. The diffuser plate permits air flow therethrough from an air source and forms a film of heated air adjacent the downwardly facing side of the sheet to support the sheet and prevent excessive downward sagging thereof during heating thereof.

Abstract: A heating element 2 comprises a substantially planar substrate 4 having a heating track or tracks 8 and a thermal sensor 10, in the form of a track or discrete component, disposed on one side of the substrate 4. The thermal sensor 10 is separated from the heating track 8 by a locally thinner portion 12 of the substrate 4. The sensor 10 may be located in, or surrounded by, the thinner portion 12.

Abstract: In a laminated heated plate glass, especially for an airplane cockpit, the plate glass includes at least two sheets of structural glass (12, 14) which are secured in a rabbet of the cockpit and connected to one another by a first intermediate layer (16) made of transparent plastic material, at least one third sheet, made of glass (18), which is not secured in the rabbet and which is connected to the external sheet of structural glass (14) through the intermediary of a second intermediate layer (20) made of plastic, and conducting devices in a thin layer (26) which are arranged between two current input strips (28), which are connected to a source of current. The connecting devices (26) are arranged in the thickness of the plate glass, on the outside of the set of the two sheets of structural glass (12, 14), on the side facing the outside of the cockpit.

Abstract: Cement clinker is produced from powdered and fine-grained raw material by the use of a vertical stage cyclone preheater, a precalcinator, a kiln, and a cooler. The raw material is preheated by exhaust gases from the kiln and the cooler. Dust is filtered out of the exhaust gases, preheated, precalcined, and then burnt to cement clinker in a kiln. Downstream of the first preheater stage a relatively smaller part-quantity of the material is branched off and fed as a mixture jointly with the dust from the filter to the upper end of the precalcinator. This mixture passes through the precalcinator from top to bottom co-current with combustion air and with fuel for precalcination and then is delivered to the kiln inlet.

Abstract: A double-sided meshing type silent chain which permits improvement in service life of the shoe of a chain guide for example, also permits a smooth and high-speed transmission of power, and which has a high durability. A plurality of articular train plates and a plurality of guide train plates are alternately connected together with pins, the plates being formed on the front side with main teeth for engagement with a sprocket located on an inner peripheral side of the chain, and guide plates, whose inner faces are abutted against and guided by side faces of the teeth of the sprocket, are disposed on both outer sides of the plural guide train plates.

Abstract: For a toroidal type continuously variable transmission, the end portion of a radial needle bearing provided for a trunnion is protruded from the inner face of the trunnion. Also, the inner face of the trunnion is made substantially flat. Therefore, the processing of the trunnion is made easy, and the holder of the thrust needle bearing can be easily positioned simultaneously. Also, the structure is arranged to enable the recess formed on the trunnion to engage with the extrusion formed on the holder, thus preventing any plane pressure from being exerted excessively on the rolling surface of the needles of the thrust needle bearing, as well as preventing the needles from falling out of the pockets of the holder.

Abstract: A belt-tensioning device for a walk-behind mower with driven wheels is disclosed. The belt-tensioning device allows the operator a hands-free way to increase the idler pulley force and hence, tension of the driven belt. The device includes a belt guard, a spring adjuster assembly comprising a spring adjuster arm and a spring adjuster footstep. The operator increases the tension of the driven belt by using the footstep that is located on the device attached to the spring adjuster arm. This moves the pulley by way of a spring attached to the pulley and the belt guard. Movement of the spring increases the belt tension.

Abstract: An oil air distributor is inserted in the inside of a support hole provided in a housing. The oil air distributor is designed so that outer pipes and a spacer fitted onto an inner pipe are held, through seal rings, between a flange portion provided in the inner pipe and a supply plug. In a condition in which the seal rings are compressed axially, the second oil-supply hole provided in the supply plug is communicated with branch passages provided in the housing. Further, a plurality of inner-pipe-side small holes provided in the inner pipe are opened substantially horizontally in vertically even-level positions.