Abstract: A new and improved wireless hair dryer includes a housing, a battery, a fan, a motor, wherein the fan is operatively connected to the motor, a heating element, wherein the fan, the motor, and the heating element are contained within the housing, wherein the heating element and the motor are operatively connected to and are powered entirely by the battery, and a control switch.

Abstract: This disclosure relates to an electrical heating device, especially for motor vehicles, including a closed frame (2) which include rails (3, 4) and cross rails (5, 6), heating elements (7) which include elements made of electrically conductive plastic layers (18) having PCT effect, which are arranged between contact plates (15, 16), heat-conducting secondary surface elements (8) that can be overflown by air and at least one electrically conductive spring element (9), wherein the heating elements (7) and the secondary surface elements (8) are alternatingly arranged next to one another and are braced against each other by the rails (3, 4) and a spring element (9) placed centrally which replaces the secondary surface element (8).

Abstract: A system for removing snow and ice from a surface that includes a fan and a heating element contained within a hollow cavity open at one end, and a hollow duct positioned above the hollow cavity. The hollow duct is open at both ends; one end is positioned directly above the open end of the hollow cavity, while the other end leads back into the hollow cavity through a hole on the other side of the heating element contained therein. The fan blows air past the heating element and out the open end of the hollow cavity. The heated air melts any snow or ice with which it comes into contact. At least some of the heated air that does not contact any snow or ice is drawn into and through the hollow duct, and back into the hollow cavity where it may be reused.

Abstract: An apparatus for generating carbon monoxide comprising an enclosure (6) having an inlet and an outlet at least one of which is provided with means (8) restricting air flow from the inlet to the outlet, a container (1) located within the enclosure (6) arranged to receive carbon material (2) in intimate contact with an electrical heating element (3), and means (5) for causing air to move from the inlet to the outlet.

Abstract: A fully integrated drying or heating system for the printing, coating, or painting industries that utilizes forced air and electrical heaters. The method for heating the forced air incorporates a solid cartridge heater within a specially designed air distribution system. The nature of this invention allows the operating controls and all the components of the air distribution system and air heating system to be fully integrated into a singular compact package, thus requiring only a pressurized air source and electrical power means to be supplied to the unit.

Abstract: A heater is provided that has a temperature sensing control system which can be used for both temperature control and over-temperature protection against element burnout. The temperature control system is comprised of an inlet temperature sensing assembly positioned at the inlet to the heater element and an exit thermocouple positioned in the exit end of the heater element. The exit thermocouple may be used for control the heater temperature and provide over-temperature protection. The inlet temperature sensing assembly is used to detect low or no air flow conditions which could lead to heater element failure.

Abstract: An air heater is provided for use in buildings or other structures. The air heater uses infrared lamps to generate a temperature rise in a forced air chamber that contains several infrared lamps, in which two ends of the chamber act as an inlet and an outlet, and in which the chamber has a highly reflective interior surface that reflects the light being emitted by the lamps to multiply the thermal effect of the infrared light sources. An alternative embodiment uses a closed chamber, in which the temperature rise causes the unit to act as a detonator.

Abstract: An air heater is provided with a connecting case for the power supply and the air to be heated, as well as a heating element attached to the connecting case by means of a carrier. In the connecting housing, the carrier is connected via a plug connection with the connection board for transmitting the heating current. For this purpose, a receptacle angle bracket is provided that can be inserted into the connecting housing and locked in place. The receptacle angle bracket has cylindrical sleeves serving as electrically insulating bushings for the contact pins on the carrier. In order to tap reference voltages for the control device, the contact pins of the plug connection can be connected with the contact tracks of the connection board of the control device by means of rubber-elastic conductive connecting elements.

Abstract: An air supply device is provided for a vehicle seat of an open-top motor vehicle having at least one air outflow opening which is provided in the upper region of the vehicle seat and via which an airstream can be applied to the head area, shoulder area and nape area of the sitting vehicle occupant in order to reduce undesired draft phenomenon. The airstream can be regulated by way of a control device. In order to provide improved comfort for the sitting vehicle occupant when driving with the top open, the airstream is adjusted, when the air supply device is switched on, by way of the control device as a function of an automatically sensed external parameter value or of a predefined value selectable by the sitting vehicle occupant, to an assigned basic value, starting from which the further adjustment of the airstream is carried out as a function of an automatically sensed further parameter value.

Abstract: After washing, the hands are dried rapidly and comfortably by using a shaped high speed flow of heated air. The air flows in a direction controlled by an air outlet shaped to retain much of the exiting forceful air flow and temperature at a distance where the hands are dried. The air entrainment is controlled so that the properties of the air flow are not diluted by the air entrainment to a point where the drying performance is degraded. The forceful air flow blows off most of the loose water on the hands. The forceful air flow also reduces the stagnation boundary layers in the hands so that the evaporation removal of the remaining film of water is improved. These result in reduced drying time and comfort during and after drying.

Abstract: A boilerless steamer apparatus is provided having a steamer cavity formed of a steam generating space and a cooking space, wherein the steam generating space is separated from the cooking space by a removable steam lid. The present boilerless steamer apparatus can provide between 7 to 10 lbs./hour (per pan) of steam. Various methods to easily clean the boilerless steamer apparatus are provided.

Abstract: A recirculated heated air mat system melts snow and ice from driveways or roofs, preventing its accumulation. The driveway sized, hollow mat of tough, pliable rubber, plastic is resistant to tearing and abrasion. A recirculating air electric heater provides heated air to the mat. The mat contains baffles directing heated air sinuously through the substantial portion of the mat, and an internal wall forms a cooled air return path along the upper end for recirculating the air to the heater. For a two-car garage, two pads are provided. The second pad may be identical to the first pad. Heated air is directed between the first and second mats and returned through the cooled air return path by separate removable ducts between heating air paths and cooled air return paths. The system may be modular, being assembled from identical mats and ducts. A large single mat for a roof is provided.

Abstract: A fully integrated drying or heating system utilizes forced air and electrical heaters. A solid cartridge heater is enclosed within a compact air plenum with a circuitous air path arranged within the plenum in heat transfer communication with the heater. The plenums are shaped and configured to be used in banks of plural plenums, with the operating controls and all the components of the air distribution system and air heating system fully integrated into a modular package.

Abstract: An elongate heating element that includes an insulative substrate and a resistive coating that heats to a predetermined temperature when an electrical current is passed through the coating. The insulative material forming the substrate is preferably a ceramic such as cordierite, but the invention is not limited to any particular insulative material. An air moving device directs an air stream over the resistive coating in order to heat the air stream.

Abstract: A portable, handheld seam welding gun for filling in seams between sheets of linoleum flooring is provided with a unique heat nozzle. The heat nozzle of the invention couples the heating barrel of a conventional floor seam welding gun to a conventional hollow welding tip by receiving the heating air inlet tube of the tip within the confines of a downstream socket formed in the body of the heat nozzle. A larger, upstream socket formed in the body of the heat nozzle fits onto the heating barrel of the handheld, portable welding gun. A plurality of preheating jets are formed on the underside of the body of the heat nozzle to preheat the region of the channel immediately to the rear of the welding tip just before molten sealant flows into that portion of the channel.

Abstract: A boilerless steamer apparatus is provided having a steamer cavity formed of a steam generating space and a cooking space, wherein the steam generating space is separated from the cooking space by a removable steam lid. The present boilerless steamer apparatus can provide between 7 to 10 lbs./hour (per pan) of steam. Various methods to easily clean the boilerless steamer apparatus are provided.

Abstract: The apparatus comprises a pair of parallel conveyors (T1, T1′) with vertical motorized axes (101, 101′), formed by any flexible heat-resistant and air-permeable structure, the inside run of which contacts with appropriate pressure the sides, containing the folded-down flaps to be sealed, of the packaging (P), which is supported from beneath by for example an optional horizontal motorized conveyor (T) travelling in the same direction and at the same speed as the said inside runs of the said lateral conveyors arranged longitudinally behind which are tubular electrical resistors (6, 6′) heatable by the joule effect and of low thermal inertia, that dispense jets of hot air through the active inside runs of these conveyors and that are incident upon the flaps of the packagings, in order to produce weld lines thereon. Subsequent means (10, 10′) are provided to maintain an appropriate pressure and to cool the said weld lines, before the packagings leave the said apparatus.

Abstract: A portable air temperature controlling device useful for warming air surrounding an aerosolized drug formulation is described. Warming the air of an aerosol makes it possible to reduce the size of aerosol particles produced by an aerosol generation device. Additionally, warming the air forces the size of the aerosol particles to be in the range required for systemic drug delivery independent of ambient conditions. Smaller particles can be more precisely targeted to different areas of the respiratory tract.

Abstract: A hand-held hair dryer including a handle, a body connected to the handle portion, a barrel connected to the body portion and having an inner member defining a first air passageway, an outer member slidably coupled to the inner member and defining a second air passageway that is substantially parallel to the first air passageway, a shutter coupled to the inner member and movable in response to sliding of the outer member with respect to the inner member to selectively direct air through the first air passageway and the second air passageway.

Abstract: A heat conductor coil for heating a flowing gaseous medium is configured to be attached to a support configuration and has a heat conductor wound in windings following an ascending line of a coil to form the heat conductor coil, wherein the ascending line of the coil defines a circumferential surface of the heat conductor coil. The heat conductor is deflected alternatingly in opposite directions within the circumferential surface of the coil out of the ascending line of the coil. The heat conductor coil is attached to a support plate by securing elements having a securing part for holding a winding of the heat conductor coil and a foot part for attaching the securing element to the support plate. The securing part is a tubular section with a substantially closed mantle surface and receives a winding of the heat conductor coil.

Abstract: Electric heaters and blower units are disposed inside an occupant seat having exterior cover members, each of which has a plurality of outlet openings. Each electric heater heats the corresponding exterior cover member, and each blower unit blows air through the outlet openings of the corresponding cover member. Manipulation dials are provided to manipulate the corresponding electric heaters and blower units. A variable heating power command signal, which commands increasing or decreasing of a heating power of each corresponding electric heater, and a variable flow rate command signal, which commands increasing or decreasing of an air flow rate of each corresponding blower unit, are generated through adjustment manipulation of the manipulation dial in synchronism with movement of the manipulation dial.

Abstract: The present invention relates to an apparatus for supplying heat to directly cooled electronics. To ensure that directly cooled electronics are maintained at a temperature above 0° C., a circulation fan is provided in a transverse junction between an outlet duct and an inlet duct, for a recirculation flow of supplied cooling air, whereby outgoing hot air from the electronics, when necessary, may be mixed with the cold air, so as to raise the temperature of the cooling air to be supplied to the electronics.

Abstract: A disconnectable hot air nozzle device is provided with a nozzle holder 2 having an introducing portion 2c and a hook shaped retaining portion 2d, an attachment 3, and a cover 4 vertically replaceable for a predetermined amount relative to the attachment and having a retaining pin 4a, with the retaining pin being introduced from the introducing portion 2c of the nozzle holder 3 into a retaining portion 2d. The nozzle holder 2 and the attachment 3 are disconnectably fixed with each other, with the abutting surfaces provided on the nozzle holder 2 and the attachment 3 being brought into abutment with each other by a force applied from a urging member 5 to the nozzle holder 2 via the retaining pin 4a.

Abstract: A high-velocity, accurately responsive impingement heater provides heated air at a substantially constant temperature to a process location to effect control of a process. The heater includes an air line for conducting air from an inlet thereof to the process location. A heat exchanger, including a plurality of electrical heating elements, heats air conducted through the air line. A power driver is connected to the heat exchanger and applies current to the heat exchanger. A controller is connected to the driver and receives a predetermined process temperature input from the user, as required for effecting control of the process. A process temperature sensor is positioned at the process location and measures the temperature of the air provided to the process location. The process temperature sensor provides a process temperature signal to the controller which is indicative of the air temperature at the process location.

Abstract: A heater assembly includes a housing structure, a support structure, an insulator structure, and a heating structure. The housing structure conveys heat to be produced within the housing structure from a first portion to a second portion of the housing structure. The support structure is releasably and fixedly secured to the housing structure. The insulator structure is affixed to the support structure to be releasably and fixedly secured to the housing structure. The heating structure is affixed to the insulator structure to be releasably and fixedly secured to the housing structure, and to be insulated from at least one of the housing structure and the support structure. The housing structure includes an outer surface having a non-uniform cross section with respect to an axis of the housing structure. The support structure, the insulator structure, and the heating structure are positioned within the housing structure.

Abstract: A golf club grip heating apparatus includes a housing configured to be mounted to a powered golf cart which can seat at least two occupants. A rotatable fan is received by the housing and is electrically powered from electricity provided by the golf cart. A heat generator is received by the housing downstream of the fan. The fan is in fluid communication with the heat generator to drive air over the heat generator within the housing. At least one air outlet is received on the housing downstream of the heat generator and from which heated air is expelled. At least two heated air conduits are connected with the at least one air outlet. Such are of sufficient length and are configured to extend to respective portions of two golf bags received by the golf cart in addition to the housing when the housing is mounted to the golf cart.

Abstract: A drier unit (10) for drying printed products has a plurality of drier rails (12), which comprise in each case a supporting body (14) manufactured from a hollow section (16). The clear outer contour of the cross-sectional area of the supporting bodies (14) is a rectangle. The drier rails (12) have in each case two resistance heating units (60) and additionally carry an infrared radiator (164).

Abstract: A deicer for an air gap between the rotor and stator of a rotating machine having a rotor and stator combination includes a heating assembly preferably disposed in the stator adjacent the air gap to heat the air in the air gap. Heating assembly includes an electrically powered resistive heating element wound through armature slots of the stator. The disclosed device and method have principal applications in emergency-type devices like Ram Air Turbines (RAT) and other power conversion devices such as Hydraulic Motor Generators (HMG) and Electric Motor Pumps (EMP).

Abstract: A hot air blowing gun includes a housing, an inner barrel mounted inside the housing and holding a high-impedance resistance type heating element around the inside wall thereof, a tapered, hollow, cylindrical nozzle fastened to the front side of the housing and spaced around the front side of the inner barrel, the nozzle having a slotted outward positioning flange fastened to the front side of the housing and spaced around the periphery of the inner barrel by a gap for ventilation, a fan motor assembly mounted inside the housing behind the inner barrel and controlled to blow air through the inner barrel and the nozzle, and a hollow, tapered protective cap fastened to the front side of the housing and suspended around the nozzle, the protective cap having an inside wall spaced from the periphery of the nozzle by a gap through which a part of the currents of air from the fan motor assembly passes to the outside of the hot air blowing gun via the protective cap to lower the temperature of the protective cap.

Abstract: An apparatus (1) for delivering hot air comprises a protection structure (2) to be fastened to a wall (4) and a delivery unit (9) set to generate a continuous air flow. The delivery unit (9) is in engagement with the protection structure (2) through a ball joint (12, 13) so that it is movable between a rest position and an infinite number of operating positions. Associated with the ball joint (12, 13) is an electric switch which is switched over to a closed condition when the delivery unit (9) reaches one of its operating positions thereby starting said delivery unit (9).

Abstract: The “Defogger” is a new device developed from several existing components, which will eliminate fog or condensation formed from the floating vapor molecules produced from showers, which collects on the face of a bathroom mirror. This combination of components has not been structured, built, or utilized to perform this function explained in the specification as to my knowledge and through extensive research on the subject matter. The “Defogger” has been devised as a new device, which will eliminate fog or condensation from a mirror, unlike such existing mechanisms, this invention works better and faster than the present standard existing moisture removal systems, or for example, “The Bathroom Ceiling Fan.” The “Defogger” can be utilized in hotels, motels, homes, or any where steam/vapor travel can accumulate onto glass or mirror surfaces.

Abstract: A heat gun nozzle and a method of using the nozzle includes a fan-shaped or wing-shaped flow of air having a temperature and/or airflow variation along the nozzle. This provides for a variation in the shrink rate when the fan-or wing-shaped airflow is applied to heat shrink plastic film. Both symmetric and asymmetric embodiments of the heat gun nozzle have an inlet portion mountable on a conventional heat gun outlet and an outlet portion providing the desired fan-shaped heat air flow with a duct portion connecting the two. In preferred embodiments, the nozzle outlet can be concave or convex depending upon the contour of the surface which is to be covered. The present invention also relates to the method of using such a heat gun nozzle permitting a substantial reduction in the number of heat gun passes required to successfully heat shrink film onto a compound curved surface.

Abstract: A soldering apparatus is provided with a holding section for mounting and holding a board to which reflow solder is previously applied and in which a mounted part is mounted on the reflow solder, a moving section for automatically moving a holding part between a heating position and a board mounted position, a first heater for heating a face having no mounted part of the board at a temperature lower than a solder melting point and a second heater for heating a connection range of the board and the mounted part at a temperature higher than the solder melting point. The soldering apparatus also has a timer for setting a heating time of the first heater and the second heater.

Abstract: A method and device for hot-air cutting, wherein compressed air is forced into a hot-air unit in which the compressed air is heated, the hot air is then conducted through a cutting nozzle for hot-air cutting. A compressed-air unit is connected to a hot-air unit via a coupling device arranged at one end of the hot-air unit to provide the hot-air unit with compressed air. The hot-air unit is being provided at its other end with a cutting nozzle. A heating device is arranged to heat air flowing into the hot-air unit.

Abstract: A chip removal and replacement system is designed for safely and easily removing or reattaching components from a printed circuit board. The system includes an automatic suction system for lifting a component which has been removed. A nozzle connection and replacement mechanism is provided for interchanging nozzles. The system is also provided with an improved circuit board holder, a circuit board auxiliary preheater, and a simplified control system with one touch removal and replacement.

Abstract: A process and device are used to weld plastic sheets with hot gas. Conventionally for welding with hot gas, the gas was conveyed over an electrically heated body. However, temperature fluctuations occurred that were difficult to correct and the result was a relatively high power consumption. In order to make a precise temperature guidance with a favorable efficiency possible, the gas is blown through a tubular heat conductor (10) with outlet openings (16) in its circumference wall and against a plastic sheet, and the tube body (10) is heated by an electrical current that is controlled by at least one temperature sensor exposed to the temperature of the tube body and/or the hot gas. Preferably, the tube body (10) itself is used as a temperature sensor, while its resistance, which changes with the temperature, is used to control the current intensity.

Abstract: In one embodiment a blow dryer includes a barrel having an opening. A deflector, having an aperture, positioned within or substantially within the barrel. The hand-held blow dryer can be utilized in at least a first or open mode in which air flow is directed through the barrel opening of the barrel, and a final or fully deflecting mode. Thus, in the fully deflecting mode most of the air is deflected by the deflector so as to diffuse the airflow. Additionally, the shape of the deflector allows the airflow to be maintained while the deflector is in any position, thus, allowing the airflow to flow past the heating coils in the barrel so that potential overheating of the blow dryer is reduced. In another embodiment, a gap is provided between two flaps which comprise the deflector so as to achieve the same result. In still another embodiment, rings are provided around the circumference of a barrel having holes in the barrel. The rings diffuse the air emanating out of the holes and also guide the hair for styling.

Abstract: An electrical heating unit, particularly for a hair drier, comprises a first wire heating element, in particular a spiral coil wire heating element (2) having a heat conductor support comprising at least one support plate (4, 5, 6), and a heat conductor winding (7) arranged thereon. This spiral coil wire heating element serves to heat the stream of air flowing through the hair drier. At least one second wire heating element is provided, serving the function of adapting the electrical voltage for a further electrical load, particularly as a series resistor, for a direct-current motor fitted with an impeller to produce the stream of air. The second wire heating element (3) comprises a frame-type heat conductor support (8) and a heat conductor winding (9) arranged thereon which fills the free area of cross section of the heat conductor support (8). Further, the second heating element (3) is secured to the first heating element (2).

Abstract: An apparatus for heating plastic pipe includes an outer housing having distal first and second open ends and a diffuser plate mounted inside of and spaced apart from the top of the outer housing. An inlet extending through the housing is positioned for directing heated air to impinge on the diffuser plate. A mount positions the diffuser plate within the housing such that when the plastic pipe is disposed in the housing through the open ends of the diffuser plate does not contact the pipe. First and second end caps are disposed at the distal first and second open ends respectively. The end caps have first and second apertures therethrough for supporting and centering the plastic pipe such that the diffuser plate does not contact the pipe.

Abstract: A dryer unit intended especially for drying printed products, has a frame in which two sides of the frame are formed by portions of profile material of the kind used also for the manufacture of rail main bodies of heating rails.

Abstract: A device for defogging and deicing windshields and other glass surfaces is described. The device comprises two air channels that each circumscribe a glass surface, one channel along the interior edge of the glass surface and the other along the exterior edge. Each of the channels feature numerous outlets that disperse hot air onto the glass surface, thereby blanketing the glass surface in hot air on both sides. The two channels may be incorporated into a single boot made of rubber or some other material that doubles as a gasket to hold the windshield or other window in place. An electric heating element may be incorporated into the device so that warmed engine coolant passing through a traditional vehicle heater system coil is unnecessary. Several such devices may be incorporated into a vehicle to heat each glass surface individually.

Abstract: A hot air blower is provided having a first material, a second material, and a gap disposed between the two materials. The gap provides residence time in order for a gaseous flow delivered through the blower to become heated. The materials preferably comprise porous ceramic foam and provide a tortuous path for the gaseous flow. The preferred ratio of the volume of the materials to the volume of the gap is 3. The blower also preferably comprises a heating element for imparting heat to the gaseous flow, and a fan for creating the flow.

Abstract: A refrigerator having an apparatus for thawing frozen food includes food case mounted on the lower side of a partition for partitioning cooling compartments from each other, and a heater and a blowing device installed in the partition. The operating time of the heater and the blowing fan is counted in a timer. A user accommodates frozen food in the food case and sets a time for thawing by the timer. Then the frozen food is thawed by the operation of the heater and the blowing device. Thus, the frozen food can be thawed conveniently and rapidly.

Abstract: A fog clearing system, for clearing fog in front of an automobile, comprising at least one blower mounted in the front of the vehicle. The blower comprises a turbine and an outlet tube. The turbine directs air through the outlet tube, where it is heated by heating coils, and exits the outlet tube at a mouth, wherein a high intensity blast of heated air is directed in front of the automobile. The high intensity blast of heated air serves to clear fog located immediately in front of the automobile.

Abstract: An apparatus for trimming sharp edges from a non-round workpiece having a contour includes a member for trimming the workpiece by impinging a stream of heated gaseous medium on the workpiece; a member for holding the workpiece, the member for holding being rotatably mounted relative to the member for trimming relative to the member for holding; and a cam for guiding the member for trimming, the cam cooperating the member for holding with the member for trimming so that the member for trimming follows the contour of the workpiece when the member for holding is rotated relative to the member for trimming.

Abstract: An electric heater support and mounting assembly is described for reducing or substantially eliminating noise resulting from the vibration in the heating element. The support and mounting assembly comprises a housing having a plurality of unique openings for receiving a plurality of arms extending from a support plate. The openings firmly engage the arms so as to prevent rattling while enabling the arms to move within the opening to accommodate thermal expansion of the support plate.

Abstract: Improved kugelrohr or apparatus for distilling or separating liquids. It includes a rugged, reliable air oven and drive unit with numerous safety features. One or more external guards eliminate burn hazard and risk of accidental contact. A thermal isolation support isolates the oven from its rest surface. A grounded heating element eliminates shock hazards. The oven is fitted with a grommet or bushing to support a flask connected to one or more additional flasks in a series. The outlet of the last flask in the series is connected to a drive tube via a flexible coupling. The drive tube is connected to a rotary bearing assembly mounted on a drive unit. The oven and the flasks may include impellers for circulating air to enhance heating efficiency.

Abstract: An electrical connector having an electrical plug (102) to be plugged into an electrical receptacle (130). The electrical plug (102) includes an electrically insulative plate-like substrate and a plurality of first electrical contacts (118) formed in parallel on at least a side surface at one end of the substrate for a predetermined length from the one end. The plug further includes a shielding part (126) formed of an electrical conductor which substantially shields all of the substrate in a position nearer an end other than the one end having the electrical contacts (118). The electrical receptacle includes an electrically insulative receiving member (138) forming at least part of a recess in which the substrate of the plug is inserted. A plurality of second electrical contacts (142) are arranged in the receiving member (138) so as to contact the plurality of contacts in the plug whenever the substrate of the plug is inserted into the recess.

Abstract: An electric hair drier comprises a shallow housing 10 having an apertured boss 11 formed on its base. An electric motor 12 drives a thin cup shaped impeller 15 which in use draws air in through apertures 14 in the boss 11 and blows air radially towards a heating coil 17 surrounding inside peripheral surface 25 of the impeller 15. The impeller has external blades 26 which in use draw air from the inside peripheral surface 25 towards a central axis of the drier at the mouth of the drier. The drier has an array of comb members 20 at its mouth. The thinness of the impeller 15 and the inherent even distribution of air passing over the coil 17 provides a hair drier which can be much thinner overall, and hence more comfortable to use, and in which the air is effectively and evenly heated.

Abstract: A tool for soldering pin-in-hole electronic circuit components includes a tool plate with a set of via holes corresponding to the holes of a circuit board on which a circuit component is soldered. The board is aligned with the tool plate and hot gas is supplied through the set of plate vias to reflow solder in the board holes. The tool is particularly suitable for use in removing and replacing pinned circuit components. Use of particular gases (e.g., nitrogen) allows soldering to be carried out without the use of flux. Advantages of the tool are that it prevents burning the circuit board and/or unintentionally reflowing other circuit components mounted on the board (by directing hot gas only substantially onto the circuit board's solder-containing holes).