Abstract: To provide a drawing-out tool for sheet metal which is less in failure and excellent in the durability and has excellent handling property by evading generation of trouble in an electric system by shielding dust, metal dust, soil dust or the like from mingling in or attaching to the electric system. The drawing-out tool for sheet metal comprises a center shaft (22); a first operation means (20) provided with a bit (25) arranged to an apex part of the center shaft; a second operation means (30) for pulling-up the first operation means; and an energization mechanism (100) for supplying electric current to the bit are provided. The housing (10) for accommodating the illumination unit (70) and the illumination unit for illuminating a sheet metal surface accommodated in the housing are included.

Abstract: An electric-motor kitchen appliance, in particular an electric-motor handheld device, preferably a hand mixer, includes a switch. The invention also relates to a finger-actuated electric control for the switch, and to a method for switching on/off a kitchen appliance. The switch is unlocked when the safety switch is actuated by the finger of a user. The safety switch is electronically switched. The possibility of unintentionally operating the electric-motor of the kitchen appliance is reduced due to the manual operation of the two separate switches. As a result, the safety of the electric-motor kitchen appliance in the household is significantly increased.

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 surgical instrument having a resistively-heated heating component responsive to a power source for generating thermal excitation effective for cutting tissue and carrying out hemostasis. The surgical instrument includes a support assembly having two leg extensions connected in heat transfer relationship with the heating component. Two thermal transition regions are provided within the heating component and have extents effective to provide a decreasing temperature gradient and to restrict temperature levels exhibited at the support assembly. The support assembly is formed of high thermally conductive material and extends from the transition regions to an elongate shaft. This shaft is in heat transfer relationship with the support assembly and is formed from a high thermally conductive material.

Abstract: An electrical soldering device in the form of a soldering gun has a transformer disposed in a housing with a primary winding and a secondary winding. The transformer is supplied from an A.C. source, such as a voltage mains. The soldering tip is in the form of a resistance wire bent into a loop and connected to the secondary winding of said transformer. The secondary winding of the transformer is formed of a cylindrical sleeve of metallic material, preferably copper, surrounding the coil of the primary winding. The cylindrical sleeve has a continuous slit formed therein extending approximately parallel to its cylinder axis. The slit defines mutually opposite edge regions to which the resistance wire is connected. A frequency converter connected in the current supply line to the transformer increases the frequency, preferably into the kilohertz range.

Abstract: The device for cutting textile material and sealing the edges of the cut material comprises a heated resistance wire of round cross section supported in a supporting means. The wire forms a flattened central portion shaped to form a semi-circular bow having a symmetrical shape with a curved outer edge ground to a feather cutting edge, an inner edge and two lateral flat faces parallel to each other along which the edges of the textile material are moved after being cut by combined mechanical and thermal action of the wire. The edges of the textile material are sealed thereby. Since the temperature of the wire can be kept relatively low, no ridges of melted material are formed along the edges of the textile material.

Abstract: A vacuum pickup tool (10) having a handle (16) and a barrel (22) mounted thereto with a tip (24) that is heated by a temperature control unit (114). The barrel (22) and tip (24) include a longitudinal axial bore (41) attached to an air source through connector (116) to provide vacuum through an axial opening (62) and the tip (24) to hold a Z-clip (74) to the barrel (22). Actuation of a trigger (28) deactivates the vacuum and simultaneously heats the tip (24) to solder the clip (74) onto a wire wrapped pin (64) inserted through a circuit board (66). A thermocouple (54) and controller 114 monitor and control the temperature of the tip (24) as preset by the temperature control (114) on an instrument assembly (96).

Abstract: An apparatus for grooving a tire which comprises a tire support shaft for rotatably supporting the tire and a support frame having a cutter device mounted thereon. The cutter device and the tire support shaft are movable relative to each other in a transverse direction parallel with the tire support shaft and perpendicular to the tire support shaft. The cutter is supportable at a desired angle with the tread surface, and the cutter blade is rotatable in the direction of the groove to be formed. The cutting position of the cutter is on the axis of an arm support shaft and is controllable by the combination of orthogonal coordinates to simplify the control program for the apparatus. When required, the cutter is swingably attached to a cutter holder to enable the cutter to cut the tire rubber and to be released therefrom with ease without the need to heat the cutter.

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: The production of titanium articles that are free from low-density inclusions by the use of titanium sponge particles for melting which particles have substantially a maximum particle size of -6 mesh and finer, preferably -8 mesh and finer.

Abstract: An electric soldering gun of the type having a resistance heating element defining a soldering tip and extending outwardly from a pair of cylindrical terminal posts projecting from the front end of a cylindrical housing and further having a handle extending downwardly from the housing is provided at the upper front end with a trigger operated switch for selectively energizing the heating element and a light at the front end of the housing for illuminating the soldering tip. A clamping device cooperative with the soldering tip is provided for clamping the work being soldered during use of the soldering gun. The clamping device includes a clamping member pivotally supported on one of the terminal posts and having a clamping tip movable toward and away from the soldering tip.

Abstract: A manually operated pincer-gun utilizing electric current for heating metal hinges of a thermoplastic eyeglass frame during a repair operation includes a pair of electrically insulative hand grips, each operatively connected to an arm having an electrically conductive extremity. The hand grips are pivotally connected together such that the hand grips and the respective arms and extremities are movable toward each other. An electrically conductive heating tip and an electrically conductive picking-up tip are provided on the extremity of each arm and the secondary of a step-down transformer controlled by a pedal switch is connected to the respective extremities to supply heating current to the heating and picking-up tips. The heating tips form a pair of pins extending substantially parallel to each other to be able to be placed on the base of the hinge to apply electric heating current thereto to soften the eyeglass frame around the hinge for insertion or extraction of the hinge.

Abstract: An electrically heated excising or cutting tool for cutting rubber, plastic, and the like includes a handle carrying at one end a cutting blade of flat resistive material through which current flows to produce heat. The blade is substantially U-shaped with limbs having free ends clamped to contact pieces on the handle connected to the poles of a power supply. The blade is bent at right angles to the plane of the flat material in the region between the free ends of the limbs and the bight portion of the U-shaped blade to define a cutting region having a first limb disposed in a cutting direction from the second limb. The first limb is reduced in cross-sectional area at the bend to increase the production and concentration of heat in the cutting region to counteract the increased heat dissipation in the cutting region caused by the accumulation of excised material thereat.

Abstract: An attachment for supplying a filler wire to an electric soldering iron of the pen type includes an independent support butt having an upper housing provided with a V-shaped groove defined by two lateral faces of a dihedron. The cylindrical body portion of a pen type soldering iron is received in the groove and fixed therein by a flexible, length adjustable clamp passing around the body and having its ends fastened to the butt so as to maintain the body tangentially to the faces of the dihedron so that it forms a unit with the butt. The adjustable clamp permits soldering irons whose bodies are of different diameters to be immobilized in the groove. The support butt is provided with a manually operable trigger actuated mechanism for incrementally feeding and guiding a length of filler wire toward the heated tip of the supported soldering iron during use. The power supply lead for the electric heating element of the electric soldering iron extends through a passage in the support butt.

Abstract: An unsoldering tip for an electrical apparatus for unsoldering of soldering joints and for removing the solder consists of an electrical resistance wire being designed for being connected to an electrical voltage source at its both ends and becoming heated on current flow therethrough. The resistance wire comprises two legs which partially extend in parallel relation and have there a small distance between 0.1 and 0.3 mm. Both these legs are electrically connected one with the other at one end. At that area, where both these legs extend in parallel relation and with a small distance one from the other, a bend of about 180.degree. is provided, where an enlargement of the small distance is provided to form an enlarged open area or arcuate configuration for receiving the joint to be unsoldered, with the maximum spacing between the legs in the enlarged area being between approximately 0.8 and 1.2 mm.

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.

Abstract: An electrically heated soldering device adapted to simultaneously heat a plurality of spaced electrical elements in a reflow soldering operation includes an elongated metal laminate of substantially U-shaped cross section having a bight portion between two side portions which may be parallel or divergent. The laminate includes a layer of aluminum between a layer of copper and a layer of stainless steel, with the layers being roll bonded together. The copper and aluminum layers are removed at the bight portion to expose the stainless steel layer and form a heat generating zone for contacting the plurality spaced electrical elements which is corrosion resistant and nonwettable by solder. The edges of the copper and aluminum layers adjacent to the exposed stainless steel bight portion are shaped to impart a selectable temperature profile, either uniform or non-uniform along the length of the bight portion.

Abstract: A thermal tool and tip for the tool are disclosed. The tip includes a twisted loop of heat generating wire where the ends thereof are adapted for insertion into electrical connectors in the end of the tool. The loop is twisted at an intermediate portion and terminates in a working tip end. The flexibility of the working tip end with respect to the legs can be varied by selecting the location of the twisted portion relative to the legs.

Abstract: A tool adapted to simultaneously heat a plurality of spaced electrical elements for soldering includes an elongated heat generating member connected between spaced, parallel, relatively massive and high conductivity rectangular cross section bars. An arcuate lower portion of the heat generating member disposed between the bars is adapted to contact the surface to be soldered. Electrical current applied to one end of one bar and to the opposite end of the other bar is directed uniformly through the heat generating member transverse to the elongated dimension thereof to provide a uniform temperature to all the spaced elements. Upon discontinuation of the electrical current the relatively massive bars are operative to rapidly remove heat from the heat generating member.

Abstract: An electrically heated parting tool for removing windshields and other uses has a holder in the form of a long slender housing mounting a blade-like parting element at one end. The parting element is constructed of thin flat sheet metal and has a generally U-shape including a pair of thin flat leg portions disposed in coplanar relation and joined by a thin flat connecting portion defining a tip end. The free ends of the element leg portions are secured to a high temperature resistant ceramic-like support member recessed into one side of the holder. The parting element extends longitudinally from the holder and has a right angle bend between the holder and tip end whereby the tip end extends laterally of and toward the opposite side of the holder in spaced relation to the holder end. The holder includes a housing at the opposite end in which is located a step-down transformer connected to the leg portions of the parting element by leads extending through the holder.

Abstract: A tool adapted to simultaneously heat a plurality of spaced electrical elements for soldering includes a rigid low conductivity metallic strip connected between and holding first and second relatively massive high conductivity bars in spaced, parallel relation. The lower portion of the elongated metallic strip is shaped to extend from the bars and contact the elements to be soldered. Electrical current is applied between one end of the first bar and the opposite end of the second bar and is directed through a metallic strip transverse to the elongated dimension. Upon discontinuation of the electrical current, the relatively massive bars rapidly remove heat from the metallic strip.