Abstract: A fastening tool of the present invention includes a housing having an underside. The fastening tool also includes a magazine and a support foot connected to one of the housing underside and the magazine. Using a system of cooperating detents formed on the support foot and housing underside (or magazine, as the case may be), the support foot can be quickly and easily removably secured to the fastening tool without using any tools.

Abstract: A heat treatment apparatus is provided which includes heating means for enabling a rapid temperature rise to a temperature of 1600 through 1900° C., and a thermometer capable of accurately measuring temperatures even when rapid temperature rises and drops are repeated, the heat treatment apparatus being capable of performing heat treatment of an SiC substrate with good mass productivity after ion implantation. The heat treatment apparatus enables the heat treatment of a semiconductor substrate at 1600 to 1900° C. by temperature control using a resistance heating element and thermocouple thermometers. The heat treatment apparatus is configured such that the resistance heating element and the thermocouple thermometers include a common constituent metal as a main component.

Abstract: An electric heating tool includes a handle device and a heating device rotatably mounted to the handle device. The handle device includes a body, a power connection member, and a sleeve. The power connection member is received in the body, and the sleeve mounted around the body. The heating device includes a seat and a heating member. The seat rotatably engaged with the sleeve. The heating member is mounted to the seat and is slidely and electrically connected to the power connection member.

Abstract: A weld splatter containment device for use in rolling mills includes a lower cover and an upper cover, both controllable in approaching and moving away from a welding zone so as to substantially surround the welding zone when the lower and upper covers are situated in a position close to the welding zone. The lower cover is controlled in approaching and moving away from the welding zone along a first circular trajectory portion and the upper cover is controlled in approaching and moving away from the welding zone along a second circular trajectory portion.

Abstract: Disclosed is an apparatus for altering the temperature of a liquid, comprising: a pipe having a first end for receiving a liquid and a second end for discharging the liquid; and a thermal element for altering the temperature of the liquid, wherein the thermal element is located in the pipe such that the volume available for the liquid within the pipe is in the range 0 to 20% of the pipe volume.

Abstract: A precision configuration system includes a plier device having clasp members, a heat transfer clamp member, a bending force transducer, and a temperature controller. One clasp member has a single jaw tooth that contacts and heats a component, for example, a wire positioned by a component holder and accommodated within a receptacle defined between double jaw teeth of the other clasp member. The heat transfer clamp member includes a heating coil that generates and transfers heat to the single jaw tooth. The bending force transducer controls magnitude and direction of bending forces applied by the plier device to precision bend and reshape the component at one or more bending points on the component based on force commands received from a component configuration computer system. The temperature controller controls the generation and transfer of heat to the single jaw tooth to facilitate temperature controlled, precision bending and reshaping of the component.

Abstract: A vaporizing dispenser comprising a user-activatable chemical reaction heat source and a volatile compound inside a container such that convection currents from the activated heat source volatilize the volatile compound and carry it out of the container.

Abstract: A gas dynamic spray unit is provided that includes gun housing halves secured about a heater assembly. The heater assembly is retained within the gun housing using locating features provided on the heater assembly and the gun housing. An outlet fitting is secured to the heater assembly and supports a nozzle having a venturi that accelerates a carrier gas. The carrier gas is supplied to the nozzle by a passageway. A powder feed passage communicates with the nozzle to provide powdered material to the accelerated carrier gas, which is expelled from a tube. The passageway includes an aperture for leaking carrier gas inside the gun housing to pressurize the gun housing and prevent powdered material from infiltrating the gun housing. A shroud is secured to the gun housing about the tube to prevent damage to the tube and protect the user from contacting the hot nozzle and tube.

Abstract: Systems efficiently using heat to create a creative design using a wood burning pen are disclosed. The embodiments a wood burning pen equipped with two receiver tubes angled 0.5°-4° away from each other, two screws capable of tightening the contact between two contact rods and the receiver tubes, and a tip wire connecting the two contact rods. The contact rods are inserted into the receiver tube openings. The contact rods are tightened into place with the screws. The two receiver tubes conduct electricity through the body of the wood burning pen. Because of the screws contact with the receiver, the electricity travels through the contact rods, heating tip wire. The tip wire may then be used to create decorative designs in wood.

Abstract: The heated snow shovel combines a snow shovel with an ice chopper. Both shovel and chopper are configured to resemble a human hand or glove. Heat is supplied to both utensils via battery-powered electric heating coils. Mounted on a common handle, the ice chopper utensil can be raised and lowered relative to the shovel. The ice chopper can also be made to vibrate. Controls are provided to regulate the heat supplied to each utensil. The handle is ergonomically configured to enhance comfort.

Abstract: In accordance with the present invention, computer implemented methods and systems are provided for representing and modeling the temporal structure of audio signals. In response to receiving a signal, a time-to-frequency domain transformation on at least a portion of the received signal to generate a frequency domain representation is performed. The time-to-frequency domain transformation converts the signal from a time domain representation to the frequency domain representation. A frequency domain linear prediction (FDLP) is performed on the frequency domain representation to estimate a temporal envelope of the frequency domain representation. Based on the temporal envelope, one or more speech features are generated.

Abstract: A control system and method of controlling a battery powered heating device such as a soldering or desoldering tool that includes a control circuit to control the delivery of power to a cartridge heating tip and to cycle the power to the cartridge heating tip during times of no use so as to minimize the amount of power expended to maintain the device in a ready or usable state.

Abstract: A cartridge heater, especially a compressed cartridge heater (1) has at least one heating coil (8, 9), which is arranged exposed in a metallic tubular body (2) and is embedded in a granulated insulating material. The ends of heating coil portions (8, 9) are provided with terminals (7) projecting from the tubular body (2). To make it possible to manufacture such a cartridge heater with minimal effort in terms of labor and material, a flat insulating plate (10) coordinated in its width with the internal diameter of the tubular body (2) is provided as the carrier. The heating coils (8, 9) extend along the two flat sides of the insulating plate (10) and the two heating coils (8, 9) are connected to one another by a coil section (12, 12?), which is led around a deflecting edge (27) of the insulating plate (10).

Abstract: An electrical resistance heater element has a metal tube containing an electrical resistance coil that is electrically insulated from the metal tube by magnesium oxide powder, the coil being bonded to a conductor pin that protrudes from an open end of the tube. The powder is sealed against moisture by placing at least the open end of the tube within a chamber and immersing the open end within liquid silicone. A gas is pumped into the chamber to pressurize the silicone sufficiently to cause some of it to encroach into the powder through the open end of the tube. The heater element is installed within a heat exchanger with the silicone remaining uncured.

Abstract: An electrical heater bundle has heater elements, each including a metal tube, an electrical resistance coil within the tube, a conductor pin connected to the coil and protruding from an end of the tube, and an electrical insulation powder surrounding the coil within the tube. A conical cavity is located in the insulation powder at the end of the tube, the cavity extending from an inner diameter of the tube to the conductor pin. The cavity is filled with an epoxy that is cured in place. The insulation powder may have an infiltrated layer at the cavity that is an uncured liquid silicone. The heater elements are mounted to a header plate, and the elements associated with the three different phases of electrical power may protrude past the header plate at different distances.

Abstract: A soldering iron with a removable tip, including: a soldering iron, including: a shaft; a ferrite bobbin disposed on the shaft; a magnetic coil wrapped around the ferrite bobbin; and a removable tip with a heater element disposed thereon, wherein the heater element is dimensioned to be received around the magnetic coil when the removable tip is placed onto the soldering iron.

Abstract: An aromatic container heater and assembly adapted to enhance the release of desirable scent from an aromatic or fragrant candle by heating the exterior of a candle container and thereby melting the candle to release the desired scent. The heater includes a conductor, held within an insulating cover, which is electrically connected to an AC plug for receiving a current and thereby generating the necessary heat to melt the candle.

Abstract: An electric heat sealer is constructed to include two pivoted arms of substantially T-shaped profile and an electric heating mechanism in one of the arms, each arm having a handhold portion through which the user can hold the electric heat sealer with the left hand or the right hand as desired to directly seal the workpiece with the electric heat sealer, or to operate the electric heat sealer on a worktable when sealing the workpiece. An operation case is selectively used with the electric heat sealer for protection.

Abstract: An instrument and method are provided for sealing and joining or hemostatically dividing tissue, which is particularly suitable for laparoscopic and endoscopic surgery. The instrument makes use of the controlled application of a combination of heat and pressure to seal adjacent tissues, to join adjacent tissues, or to anastomose tissues, whereby tissue is heated for an optimal time and at an optimal temperature under optimal pressure to maximize tissue seal strength while minimizing collateral tissue damage. The instrument of the present invention is lightweight and therefore portable, and is particularly useful in field conditions where a source of external power may not be readily available.

Abstract: An electrically-heated wax spatula apparatus is used in molding and preparing wax models for investment casting. The temperature of its spatula portion can be adjusted immediately during use. The wax spatula apparatus comprises a spatula body provided with a heating portion accommodating an electric heating element and a temperature sensor at the front end of the grip portion thereof and a wax-molding spatula portion installed in the heating portion, and a temperature controller for controlling the temperature of the spatula portion depending on a temperature signal from said temperature sensor. The temperature controller comprises a temperature-setting mechanism for independently setting the temperature of the spatula portion and a preset temperature selection mechanism for selecting the preset temperature levels, and the temperature-setting mechanism is a temperature-setting switch disposed at the front end of the grip portion to be operable with a fingertip.

Abstract: The Retractable Cauterizing Knife is a handyman's tool which combines the utility of a pocket knife with the power of a cautery. It has a cautery filament installed on the cutting edge of the blade with wiring leading through the shaft of the blade to a AA-size battery pack which also serves as the handle of the knife. With just two standard AA-size batteries, the cautery filament can heat to a scorching, red-hot 2,200 degrees Fahrenheit. The cautery can be activated only when the knife is in the extended and locked back position, and a spring-loaded switch is pressed. Therefore, the knife is extremely safe and will not turn on if left alone or dropped. It has unlimited utility, and is particularly valuable for the handyman, cook, and hobbyist.

Abstract: A cover for a flashlight handle comprising at least one heating coil positioned proximate to the handle so that heat generated by the heating coil warms the area gripped by a user. In the preferred embodiment, the heating coil is disposed within a flexible sleeve which is attached to the flashlight handle so that at least a portion of the flashlight handle is disposed within the flexible sleeve. A power source is preferably disposed within the flashlight handle. A switch in electrical communication with the power source and the heating coil is operative to enable a user to providing power to the heating coils.

Abstract: Surgical apparatus for bipolar diathermy has a radio frequency generator connectible to a cutting assembly which includes a support structure having a pair of electrical supply conductors and, mounted at the distal end of the support assembly, a tissue cutting head. The cutting head comprises a loop of material which is electrically conducting and has a negative temperature coefficient (NTC) of resistance, such as silicon carbide. In operation, radio frequency power from the generator causes heating of the loop to a temperature at which its resistivity rises to level which exceeds that of living tissue with the result that diathermy currents pass through the tissue. Also disclosed is a pair of forceps with electrodes made of NTC material, for cauterization.

Abstract: An instrument for cauterizing tissue is provided. The instrument includes a housing having an angled member with a free end. A looped cauterizing element is connected to the free end. Power is applied to the cauterizing element using a switching subassembly and a battery power source. The switching subassembly is activatable at a number of portions using a resilient boot to which the surgeon applies pressure to energize the cauterizing element. A copper conductive casing surrounds the battery power source. When the cauterizing instrument is utilized, the angled member enables the instrument to be positioned in a desirable location relative to other instruments used while cauterizing tissue.

Abstract: A Curie point heater primarily for use in a soldering iron and initially designed to operate with currents in the megahertz range is restructured to operate in the kilohertz range. Further in one embodiment of the heater, the coil exciting the heater is mounted in the handle of the iron.

Abstract: The toaster comprises a housing for receiving the pieces of bread to be toasted or to be reheated and on both sides of this housing an electric heating element having an electric resistor (R.sub.1, R.sub.2) wound on an elongated support made of insulating material (10, 11).On both sides of the housing there is provided at least one second electric resistor (R.sub.3, R.sub.4), commutation being provided to connect to the mains, as desired, one or both of the abovementioned resistors.Use: to permit a plurality of heating modes in toasters.

Abstract: A heating element is held in position by a rigid holder constructed to surround an ultrasonic bonding tool and is itself fastened in a fixed position relative to the bonding tool, such that the rigid holder and the heating element are held in close proximity to the bonding tool without physically contacting the bonding tool. This serves to heat the bonding tool, facilitating adequate bonding without overly heating the integrated circuit assembly and without interfering with the critical ultrasonic properties of the bonding tool and ultrasonic transducer horn.

Abstract: A soldering gun is provided including an elongated tubular body of quartz having first and second ends. The first end of the body is telescoped into an outwardly opening recess provided therefore in a soldering iron tip mounted from the first end and a second shorter and smaller diameter quartz tubular member is telescoped into the end of the larger diameter tubular member from which the tip is supported. A coil of 6 to 12 turns of Ni Chrome wire is disposed about the second quartz tubular member within the first quartz tubular member and the end of the coil adjacent the tip is reversely turned and directed back through the second quartz tubular member to a point adjacent the other end thereof.

Abstract: An electrically heated branding device for marking articles has an elongated type block with a base end removably secured in a cavity of a holder and a branding indicia on a forward end face which projects from the holder. The type block includes a metallic heat receiving portion having an elongated cavity open at the base end of the type block and in which as fitted a heat generating portion in the form of a ceramic rod. An electric resistance heat generating member having a positive temperature coefficient of resistance is embedded in the forward end portion of the rod and extends transversely of the longitudinal axis thereof for heating the indicia. Lead wires from heat generating member are connected to electrodes removably received in a socket in the cavity.

Abstract: A desoldering tool has a removable cartridge and a base unit having an assembly interior including a solder collection chamber and a removable vacuum source for developing a vacuum in the bottom of the chamber under a removable porous solder retention pad, the cartridge having a temperature self-regulating heater therein and a tail pipe extending from a tip of the cartridge to a position above the solder collection chamber, and a vacuum seal between the cartridge and the base unit to maintain the vacuum and reduce transfer of heat from the tip.

Abstract: A branding device for marking articles which includes a holder having a socket cavity and an elongated ceramic type block having one end removably attached to the holder cavity and a branding indicia on a forward end face which projects from the cavity. A ceramic plate is embedded in the forward end of the type block and a heat generating member is printed as an electrically resistive pattern on a surface of the ceramic plate facing the forward, branding indicia end of the type block to heat the branding indicia. The heat generating member is provided as an electric resistance element having a positive temperature coefficient. Lead wires extend from the resistance element and are connected to electrodes received in plug portions of the socket cavity.

Abstract: A miniature light-weight electric soldering iron includes a hollow handle terminating in a conical air deflecting arrangement through which a cone-shaped curtain of relatively high velocity air is applied to the work area in a circular or elliptical region surrounding the point at which molten solder is being applied by the hot soldering iron tip thereby entraining and dissipating noxious fumes which may be generated from the soldering flux by the hot soldering iron tip. In one embodiment, the soldering iron handle is provided with a plurality of wall air inlet openings and a tiny motor and fan are incorporated to draw air into the handle through these openings and then direct it out through a truncated cone-shaped deflector to develop the air curtain. In another arrangement, the motor and fan are dispensed with and the cone-shaped deflector is coupled to a convenient pressure source, such as an air line. The flow of air further serves to maintain the handle at a comfortably cool temperature.

Abstract: Automatic portable unsolderer consisting of a solenoid supplied by alternating current, a cylinder whose piston has a rod consisting the core of said solenoid, including too a reservoir and a heating member, all of them axially engaged as above-mentioned. Through the heating member end, the material that has to be unsoldered is melted and through operation of the solenoid, the piston draws back and suctions said material, which is collected, in a solid condition, in the reservoir which includes a retaining member, easily removable, and a threaded plug. On the outlet of the reservoir a one-way valve is disposed so that the air compressed by the piston, through a return spring that encircles the rod, doesn't flow through the suction conduct avoiding in such manner that the air can drag soldering material particles. The ejected air is by-passed through a side hole provided with a one-way valve that is reversely oriented.

Abstract: The improved structure of a heater for an indirectly-heated cathode which is used for CRTs or the like is disclosed. A core wire for a heater is wound around a mandrel into a primary winding so that the inner diameter of the primary winding is 4.3 to 6.0 times the diameter of the core wire. The primary winding may be further wound into a secondary winding.

Abstract: A low voltage heating element for portable tools includes a low voltage, low current light bulb wrapped with a thin layer of metal darkened on its bulb-facing surface. Apertures in the metal layer allow the light from the bulb to be utilized in addition to its heating characteristics. Rechargeable batteries are installed in the handle of the tool to power the light bulb. An electrical jack in the tool housing may be plugged into an external power source for providing power for a greater length of time. A cordless soldering iron includes a low voltage, low current light bulb affixed to the tip of a conventional soldering iron, the conventional heating element having been removed from the housing. The bulb is wrapped with a layer of metal darkened on the bulb-facing surface, and is electrically connected to rechargeable batteries mounted either in the housing of the soldering iron, or within an external pack.

Abstract: Provided is a cartridge soldering iron having a hollow cylindrical handle, incorporating an internal coaxial socket assembly, a connection to a power supply, and a cartridge housing support, and a soldering tip bearing cartridge incorporating a tip, a heater assembly, a tubular housing and a coaxial socket assembly adapted to mate with the handle socket assembly in a wiping electrically conductive manner.

Abstract: A soldering tool wherein the soldering tip comprises part of a single loop of iron that forms the energizer means, temperature sensor, heating element and solder melting member. The power oscillator comprises a primary transformer coil that is in series with a primary capacitor to form an LC resonance circuit. The primary transformer coil is inductively linked to the iron loop so that the resistance of the soldering tip forms a load resistance on the LC resonance circuit. The power supply includes first and second power transistors connected to a source of DC current. The base of each power transistor is inductively linked to the primary transformer coil so that the power transistors alternately conduct and supply power to the power oscillator. The frequency and amplitude of oscillations in the power oscillator determines how often and how long the power transistors conduct.

Abstract: An electric heating element for a hair-curling wand having a barrel attached at one end to a handle is inserted into a portion of the barrel and consists of a loop cut out of thin flexible nickel foil having free ends forming terminals for connection to a voltage source, the loop being insulatingly embedded between two thin, flexible sheets of an insulating material. The loop is formed in the shape of two parallel straight stretches and reentrant portions at its both ends, whereby more thermal energy is produced by the end portions than by the central portion, resulting in a sustantially uniform temperature distribution. The heating element is pressed onto the inner wall of the barrel by a resilient, longitudinally slotted tube, which has an initially larger diameter than that of the barrel and is inserted along with the heating element into the barrel by a special compressing tool.

Abstract: An electric hair curler comprises a handle and a barrel connected thereto for winding thereabout the hair. The barrel is provided with an electric heater for curling the hair wound on the barrel. The heater includes a plurality of resistor elements in the form of strips extending along the length of the barrel in generally parallel relationship with one another and being electrically connected in series by a corresponding number of bridging segments. The heater thus constructed is mounted on the barrel with the resistor elements thereof being exposed on the outer surface of the barrel in circumferentially spaced relationship with one another around the barrel, so that each of the resistor elements is in direct heat transfer contact with the hair to be wound on the barrel, thus greatly reducing the heat loss to assure effective heat transfer from the heater to the hair.

Abstract: An electrically heated tool for heating a pipe connector sleeve in order to melt solder therein or applied thereto to secure the sleeve to a pipe has a pair of arms (1) hingedly connected to one another between their ends by a pin (2) in the manner of pliers. An electric heating unit (3) having an elongated shaft portion (9) enclosing an electric resistance heating element is detachably secured to and projects from one and the same end of each arm. The free end of each shaft portion (9) is detachably slidably inserted into the tubular shank of a metallic head part (4) having a semi-circular recess (4a) of a radius substantially equal to the radius of the pipe or sleeve to be heated. The arms are movable between an open position in which the recesses are spaced apart and a position in which the recesses are closed together around a pipe connector sleeve so as to apply heat thereto.

Abstract: An improved electric resistance heater assembly for soldering tools, glue guns, hair dryers, heat pencils, paint removers, etc., includes, as the core of the assembly, an open-ended tube of a ceramic material having good electrical insulation properties with good thermal conductivity, low heat capacity and a high softening temperature. A conduit extends lengthwise through the wall of the tube from end to end thereof and first and second spring-tempered split metallic compression bands of smaller diameter than the tube are placed at each end of the tube and retained thereon by compressive stress. A plurality of turns of resistance wire are wound about the outer periphery of the tube between the bands with each end of the wire welded to a respective one of the bands. An first electric lead is welded to the first band. A second electric lead is welded to the second band and extends lengthwise through the conduit and exits the conduit near the first band.

Abstract: A soldering iron for withdrawing by suction resin-containing soldering fumes includes an electric heating element (2) enclosed in a metallic casing and extending from one end of a handle (1), a metallic fume suction nozzle (6) has one end (7) lying in proximity to a soldering tip (5) mounted to the outer end of the heating (2) and its other end (8) connected proximate the one end of the handle to the first end of a flexible plastic e.g., silicone polymer; suction hose (10) removably extending through a bore (15) in the handle (1) and connected at its other end to suction source (11). The nozzle (6) is coupled in metallic heat transfer contact with the casing of the heating element (2) by metallic member (12, 13) and is thereby maintained at a temperature such that resins present in the fumes do not precipitate in the nozzle (6) but instead condense in the plastic suction hose (10), which can be easily removed from the handle for cleaning.

Abstract: A hand-held electric soldering/desoldering tool has an elongated soldering tip secured to one end of an elongated handle in substantially coaxial alignment therewith by means of a three-point, spring loaded mechanical suspension arrangement resiliently securing the soldering tip to the handle for allowing excessive pressure applied to the handle to be taken up by the spring-loaded suspension thereby preventing such excessive pressure from being applied to a workpiece. The three-point suspension arrangement includes three support members fixed to the handle and having juxtaposed ends passing freely through aligned openings in a support plate attached to the soldering tip. Each support member has a head biased into engagement with the support plate by a coil spring surrounding the support member and disposed between the support plate and handle.

Abstract: A medical instrument including a cautery portion for use in performing an anterior or posterior capsulotomy during extracapsular cataract extraction surgery. A substantially rigid stem portion is connected between the cautery portion and a handle portion, and is provided with bends to facilitate maneuverability of the cautery portion and to avoid substantial interference with the surgical field of vision by the handle portion. An electrical path is defined through the handle portion and stem portion to the cautery portion so as to permit electrical current to be supplied to the cautery portion from an electrical apparatus which generates a radio frequency current. The cautery portion, as supplied with radio frequency current, becomes heated when in contact with an eye lens capsule so as to instantaneously and uniformly sear a peripheral extent of a portion of the lens capsule to be removed during surgery.

Abstract: An electric soldering iron includes an elongated metal housing tube enclosing a metallic heat conducting member having a first zone snugly fit within the housing and having a portion projecting out of the front end thereof for removably receiving a soldering tip. A second zone of the member extends rearwardly from the first zone and has a smaller cross section than the interior of the tube to create an insulating space therebetween. The heat conducting member is formed with an opening sized and shaped to receive the end of an elongated flat ceramic heater having embedded therein an electric heating element. The portion of the ceramic heater not located within the heat conducting member is surrounded and positioned by a refractory heat insulating tube abutting the rear end of the heat conducting member.

Abstract: A relatively inexpensive electric soldering iron and handle structure can be constructed so as to be relatively simple to assemble by utilizing cooperating holding elements within a tubular handle to form a holder. This holder serves to support or hold a socket adapted to support a heating element and a cord retainer in place within the handle. The holder is in turn held in place within the handle through the use of cooperating detent elements on both the holder and on the handle. The parts of the soldering handle structure are dimensioned so that the parts previously identified can be inserted as a unit into the handle through one end of the handle as the cord is withdrawn outwardly from the other end of the handle.

Abstract: A suction-type desoldering device includes an elongated tubular heater assembly secured to the forward end of a hollow handle by a radial flange on the assembly. A removable solder collecting chamber adapted to have a vacuum created therein is disposed within the handle and has an open end connected in solder flow communication with the heater assembly by means of a compressible sealing member disposed between the flange and the open end of the chamber. The heater assembly includes a tubular sleeve secured to and extending through the flange adjacent the seal. A tubular support having a length of electric resistance heating wire wrapped therearound is mounted coaxially within and spaced from the tubular sleeve and has one end thereof extending freely into the collection chamber and the other end thereof receiving a removable tubular desoldering tip.

Abstract: An electric heater assembly for tools having a removable heated tip includes a tubular metal base having an open end adapted to removably receive and hold the end of the tool tip. A coating of ceramic electrical insulation material is provided on a portion of the exterior of the base and a length of Nickel-Iron alloy resistance wire is wound on the ceramic coated portion. Electrical lead wires are connected in lapped relationship to the respective ends of the resistance wire. Each lead wire includes a first portion lying between several turns of resistance wire and the ceramic coating on the base and a second portion bent back and overlaying the several turns of resistance wire. The second portion is wrapped with at least one additional turn of the resistance wire. A coating of ceramic electrical insulation material is provided over the resistance wire and the terminals to seal the same from the deliterious effects of the atmosphere.

Abstract: A suction desoldering tool has an elongate handle, an elongate housing defining a bore therethrough and extending co-axially from one end of the handle solder, a collecting chamber in the handle, and a tubular heating bit holder. The holder is mounted in the end of the housing remote from the body and includes a body portion surrounded by an electric heating element for receiving the bit and a tubular portion of lesser wall thickness providing communication between the bit and collecting chamber. The tubular portion is surrounded by an imperforate sleeve which defines an insulating air space along the tubular portion to enable the full length of tubular portion to be maintained above the liquidus temperature for solder melted by the bit during a desoldering operation, so that the melted solder can be drawn into the collecting chamber through the bit and holder by a source of suction connected to the chamber.

Abstract: An improved thermal barrier for rigidly connecting the heater assembly to a handle assembly in a desoldering device. In a preferred embodiment, the thermal barrier includes a slotted spacer portion which is connected to the heater assembly and serves to reduce heat transferred into the thermal barrier by means of radiation, convection and reduced conductivity. The thermal barrier also includes a portion connecting the slotted spacer portions to mounting sections which are connected to the handle assembly such that an indirect path for heat conduction is established between the heater assembly and the handle assembly. In some preferred embodiments, a fin is included to increase the surface area of the thermal barrier and further transfer heat from the thermal barrier to the atmosphere.