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8937263 Capacitive discharge welding power supply and capacitive discharge welder using the same  
A capacitive discharge (CD) welder includes a charging circuit, a capacitor bank, an insulated gate bipolar transistor (IGBT), a pulse transformer and a secondary circuit. The charging circuit...
8397976 Method for cohesively bonding metal to a non-metallic substrate using capacitors  
A process for cohesive bonding between a metal surface and a nonmetallic substrate is provided. The non-metallic substrate may comprise a plurality of microfilaments and/or nanofilaments dispersed...
7759597 Method for manufacturing a gas generator  
For manufacturing a gas generator (1), a tubular body (10) having an opening (14) in a circumferential wall (12) and a housing part (16) having an attachment end (26) are provided. The geometry of...
7307236 Charge and weld gating system with safety circuit  
A weld circuit for use in a welder is provided. The weld circuit comprises a charge section, a capacitor section, and a weld section. The charge section includes a first plurality of solid state...
7041934 Micro-welder  
A micro-welder, by which a superfine wire such as a lead wire can be welded on a desired position of a parent material with a minimum welding area, including: a power source having a...
6555777 Method of manufacturing bimetal slippers  
A method of manufacturing male bimetal slippers includes the steps of forming a stem having opposite first and second ends; rigidly affixing a ball on the first end of the stem to form a male...
6459065 Resistance welding power supply apparatus  
Disclosed is a resistance welding power supply apparatus which comprises a large-capacitance capacitor for storing resistance welding energy in the form of electric charges, a charging circuit for...
6410878 Method for producing a flame support  
The invention concerns a method for producing a flame support for a gas burner, which consists in producing disjointed metal fibres (10) in an alloy comprising iron, chromium and aluminium;...
6013891 Welding apparatus and welding method, particularly resistance welding method  
The invention relates to a welding apparatus (1), particularly a resistance welding apparatus, comprising a control device (2), a charging device (10), at least one energy store (22 to 24), a...
5587092 Method of welding vanes into a shell for a torque converter  
A method of assembly of impeller (12) and turbine (14) shells (116) for torque converters (10). Vanes (116) are capacitance discharge welded with a high energy pulse into the shells (112).
5294768 Electrical supply circuit for the generation of separately controllable current pulses  
The circuit has a transformer on whose primary side there is a storage capacitor which can be charged and discharged in a controlled manner and to whose secondary circuit a load is connected. Two...
5192843 Pin attachment tool and method of capacitive brazing  
A method is provided to replace a damaged pin in a module for an integrated circuit assembly without damaging the circuit device or chip mounted in a circuitized substrate. This method comprises...
5149933 Welding control  
Voltage stored in a capacitor bank (12) of a capacitor discharge welding apparatus is modified in accordance with the magnitude of output energy actually delivered to the weld. After empirically...
5128511 Welding apparatus and transformer therefor  
A welding apparatus is disclosed to include an electrically insulating casing, first and second welding electrodes, and one or more welding transformer cores having toroidal cores, multi-turn...
5079083 Coated microwave heating sheet  
A coated sheet material is provided for wrapping, packaging or shipping food articles that are to be heated in a microwave oven. The sheet is formed from a paper or paperboard backing which is...
5006405 Coated microwave heating sheet for packaging  
A coating sheet material is provided for wrapping, packaging or shipping food articles that are to be heated in a microwave oven. The sheet is formed from a paper or paperboard backing which is...
4965860 Capacitor type welding power unit  
A capacitor type welding power unit incorporates a constant-current charging control circuit which serves to control a charging current being supplied to a capacitor so as to be substantially...
4788406 Microattachment of optical fibers  
One or more optical fibers are attached to an optical component element or supporting substrate by coating the peripheral surface of the optical fiber with a metallic layer and then positioning...
4785159 Dental welding device and system  
A precision electric welding device is used for welding dental crowns and bridges in the mouth. The dental elements to be welded comprise dentally suitable metals, especially titanium and titanium...
4746783 Welding current control circuit for spot welder  
In a spot welder in which the electric charge stored in an electrolytic capacitor (1a) is discharged through a welding circuit 3 to perform a welding operation, in order to prevent the lowering of...
4716267 Three phase high frequency spike welding system  
A resistance-type welder employing a three phase, pulsed power supply and a pair of opposed electrodes which a workpiece may be clamped under pressure, includes a microcomputer based control...
4681999 Apparatus for welding dental elements  
A precision electric welding device is used for welding dental crowns and bridges in the mouth, the dental elements to be welded being made up of dentally suitable metals, especially of titanium...
4560852 Spike welding system having improved power supply  
A power supply for a pulse type electrical resistance welder includes an A.C. source of electrical power, a firing circuit for delivering spikes of current to a pair of welding electrodes and a...
4476366 Controlled bonding wire ball formation  
Apparatus and method are described for rapid ball formation at the end of lead wire retained in the capillary wire holding tool of a ball bonding machine. A circuit is coupled between the cover...
4464556 System and method of accurately controlling the electrode voltage of a welding device  
The voltage supplied to the welding electrode of a welding system repeatedly and accurately charges an energy storage device by directly sensing the charging voltage across the storage device and...
4458132 Welding apparatus and control system therefor  
A resistance-type welder employing a pulsed power supply and a pair of opposed electrodes between which a workpiece may be clamped under pressure, includes a microcomputer based control system for...
4449092 Capacitor charging circuit for discharge type welding tool  
The present invention provides a capacitor charging circuit for a discharge type welding tool. The circuit includes a rectifier for producing rectified pulsating currents, a capacitor to be...
4409461 Electrical resistance welder for nails used in an automatic nailing machine  
In an electrical resistance welder, whenever a material to be welded approaches the welding electrodes, a start signal is produced, so that welding current is supplied to the welding transformer...
4390771 Bonding wire ball forming method and apparatus  
Method and apparatus for forming a ball at the end of bonding wire or lead wire in a capillary wire holding and bonding tool is described suitable for ball bonding of copper and aluminum lead wire...
4357514 Welding method and apparatus  
This application relates to a method and apparatus for welding together small oxide coated components by driving a sharp edge or point of one part into a face of another part and then discharging...
4339652 Power supply for percussion welding  
This percussion welding power supply supplies welding energy through an arc between two work pieces that are forced together during or immediately following arcing. The power supply comprises a...
4319118 Method of welding tantalum lead wires to tantalum capacitor anodes  
This application relates to a method and apparatus for welding together small oxide coated components by driving a sharp edge or point of one part into a face of another part and then discharging...
4228340 Voltage regulated capacitive discharge welding power supply  
A welding power supply that includes a combination of series and shunt regulating circuits controlled by a single controller, in the charging circuit for a welding energy storage capacitor.The...
4182949 Self-contained, portable underwater stud welder  
A self-contained, portable, underwater stud welder includes a hand-held welding gun and a battery powered backpack. The welder uses a bank of rechargeable nickel-cadmium batteries which charges a...
4171477 Micro-surface welding  
This invention relates to a method and apparatus for wire bonding a variety of metals in the interconnection of semiconductor chips to electronic package substrate circuitries. A pair of...
4117296 Process and apparatus for welding sheet metal coated with layers  
A method for the connection of sheet metal panels coated on at least one surface with a layer by the electrical fusin of a metal, wherein the improvement comprises the steps of supplying an...
4014729 Method for bonding and plating with exploding foil  
Bonds are made between two work pieces by using foils exploded by electrical energy typically stored in a large capacitor. To increase the uniformity of the bond area, a foil having at least one...
4008117 Apparatus for bonding and plating with exploding foil  
Bonds are made between two work pieces by using foils exploded by electrical energy typically stored in a large capacitor. To increase the uniformity of the bond area, a foil having at least one...
3932724 Stud welding apparatus  
A capacitance discharge stud welding apparatus which comprises a housing. A coil is positioned in the housing and an armature is located within the coil and is movable between first and second...
3899653 Electrical resistance weld method and apparatus  
The metallic parts to be welded are first pressed together at the welding point between the electrodes of a welding tool. Thereafter the weld current is furnished to the electrodes in form of at...
3895211 Electrostatic welding apparatus  
An electrostatic welding apparatus is disclosed including a discharge circuit made in the form of a series network and including a battery of operating capacitors, a welding transformer, a...
3892941 Heating timer for pulse welders  
An apparatus for the timing of the pulse length in the heat supply to the jaws of a pulse welder, where a capacitor is adjusted to have charging and discharging rates which are analogous to the...
3866012 Method and apparatus for electrical stud welding  
In the disclosed method and apparatus for electrical welding of bolts or studs, single means simultaneously set the capacitor voltage and capacitance values to accomplish the welding function. The...
3852559 STUD WELDING APPARATUS  
In the apparatus disclosed, a power contact interrupting the connection between a capacitor discharge device and one of two lines of different polarities that respectively carry current from the...
3815812 METHODS AND MEANS FOR COUNTING WELDING OPERATIONS  
In the apparatus disclosed a welder produces welds by discharging a capacitor bank through a stud to be welded. Sensing means reactively coupled to the circuit produces signals corresponding to...
3805143 CAPACITOR-DISCHARGE STUD WELDING APPARATUS  
In the apparatus disclosed, a direct current source charges several banks of capacitors. A discharge circuit connects the capacitor banks to the same welding terminals. Charge-circuit decoupling...
3764778 CAPACITOR DISCHARGE STUD WELDING APPARATUS WITH COMPENSATED CHARGING CURRENT  
In the apparatus disclosed, welding is accomplished by discharging a bank of capacitors through a pair of electrodes. A transformer energizes a rectifier bridge that charges the capacitor bank...
3763343 METAL TREATING TOOL  
A method for treating the surface of a workpiece involves vibrating a consumable electrode such as tungsten carbide toward and away from the surface while maintaining the electrode and workpiece...
3742346 SURGE GENERATOR FOR TRANSFORMER TESTING  
Apparatus and method for testing short-circuited power transformers. A capacitor, which has been charged to a predetermined voltage, is connected in parallel with an inductor. When the voltage of...
3731185 INSULATION TEST APPARATUS FOR THE HIGH FREQUENCY VOLTAGE DISCHARGE TYPE WITH IMPROVED SWITCHING ARRANGEMENT TO INITIATE DISCHARGE  
An improved high frequency voltage test apparatus for insulated conductors is provided with a switching arrangement, preferably utilizing solid state switching devices, particularly reverse...

Matches 1 - 50 out of 125 1 2 3 >