Class 72/342.96 - By passing electric current through work

Subclass of Class 72 - Metal deforming
Definition: Subject matter including provision to pass electricity through
No. of patents: 36
Last issue date: 12/22/2009

Number	Title	Issue Date
7634933	Surgical needle manufacturing process A process for manufacturing a surgical needle incorporates at least one pressing operation which, preferably, in conjunction with a trimming and/or etching process, ultimately forms the sharpened needle end. The grinding operation in the preferred process does not p...	12/22/2009
7516640	Method and apparatus for forming a blank as a portion of the blank receives pulses of direct current A method is provided for forming a sheet metal blank or tubular blank in a metal forming tool, such as a sheet metal press or a media forming tool. The sheet metal press has an upper die and a lower die that are moved by a press to form the metal blank. The forming ...	04/14/2009
7302821	Techniques for manufacturing a product using electric current during plastic deformation of material A technique for manufacturing a product involves receiving material, providing plastic deformation to the material to at least partially form the product, and applying electric current to the material while providing the plastic deformation to the material. The elec...	12/04/2007
7284402	System and process for superplastic forming A system and method for superplastic forming a workpiece. The system includes a superplastic forming cell formed of a plurality of individual stations or modules, each one performing a specific manufacturing step or process on the workpiece. Individual stations incl...	10/23/2007
7278287	Apparatus for shaping metal sheets Apparatus for shaping metal sheets including a shaping tool having an forming space for receiving a metal sheet. At least one heating element is disposed in a recess of the shaping tool for heating at least a portion of the metal sheet, whereby an insulation layer i...	10/09/2007
7254974	System and method for bending strip material to create cutting dies The present invention is a bending machine for bending material such as steel to form cutting dies for products such as cloth, leather or the like. Coiled material is fed through a material washer, straightener and printer by a material feeder to a bending head. If ...	08/14/2007
7231793	Warm hydro-forming device A warm hydro-forming device comprises: an upper mold and a lower mold respectively mounted to an upper mold die and a lower mold die; a lifting die installed to the lower mold die through a guide unit, an upper portion of the lifting die being connected to the upper...	06/19/2007
7082804	System and method for bending strip material to create cutting dies The present invention is a bending machine for bending material such as steel to form cutting dies for products such as cloth, leather or the like. Coiled material is fed through a material washer, straightener and printer by a material feeder to a bending head. If ...	08/01/2006
7076980	Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta...	07/18/2006
6907761	Method and apparatus for superplastically forming a workpiece A method of superplastically forming a workpiece comprises placing the workpiece (16) in a die (14) and heating the workpiece (16) to a temperature at which the workpiece (16) is superplastically formable. Pressure is applied to the workp...	06/21/2005
6868709	Apparatus and method for thermomechanically forming an aluminide part of a workpiece A method of thermomechanically forming an aluminide part of a workpiece resistively heats at least a portion of the aluminide part, plastically deforms the heated portion of the aluminide part to a predetermined shape by applying pressure to the aluminide part posit...	03/22/2005
6860132	Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta...	03/01/2005
6755064	Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta...	06/29/2004
6612143	Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a...	09/02/2003
6613164	Method of forming a tubular blank into a structural component and die therefor A method of forming an elongated tubular blank into a tubular structural component having a predetermined outer configuration, the method comprising: providing a shape imparting shell formed from a low permeability, rigid material which includes an inner ...	09/02/2003
6463779	Instant heating process with electric current application to the workpiece for high strength metal forming A process and relevant tools for hot forming of high strength metal workpieces by means of applicating high density current to the workpiece directly and generating heat inside it by using its own electrical resistance in order to obtain desired temperatu...	10/15/2002
6322645	Method of forming a tubular blank into a structural component and die therefor A method of forming an elongated tubular blank into a tubular structural component having a predetermined outer configuration, the method comprising: providing a shape imparting shell formed from a low permeability, rigid material which includes an inner ...	11/27/2001
6230540	Method and apparatus for forming an integral bearing shoulder in a tubular axle A tubular axle having a spindle and a bearing shoulder is formed directly into heat-treated tubing. The method generally includes a heating operation, and a two stage forming operation. The first operation is to induction heat a steel tubular axle blank t...	05/15/2001
5979209	Method of forming a torsion bar with hexagonal heads To make a metal torsion bar having an elongate central body connected to two hexagonal end heads via shoulders, the ends of a torsion bar blank are initially upset while hot so as to form the shoulders of the torsion bar together with cylindrical head bla...	11/09/1999
5941114	Rolling apparatus for producing angle from steel strip and method of rolling the angle using the same A rolling system for producing an angle and a rolling method using such rolling system. The rolling system includes a heating apparatus for heating a steel strip while it is running, a universal mill composed of a pair of vertical rolls each having a groo...	08/24/1999
5927118	Method for making hot-rolled steel sheet and apparatus therefor Making method of hot-rolled steel sheet comprises rough rolling a slab into a rough bar, heating the rough bar, guiding the rough bar with side guides and finish rolling the rough bar. The apparatus comprises a rough rolling mill, a heating device for hea...	07/27/1999
5744773	Resistance heating process and apparatus A process and apparatus for effecting preheating of elongate metal parts, such as bars, for permitting subsequent deformative processing of the bar. Electrode-type clamps are attached adjacent opposite ends of the elongate bar, and direct-current electric...	04/28/1998
5737954	Superplastic forming with direct electrical heating Sheet materials are superplastically formed and optionally diffusion bonded into structures, by directly electrically resistance heating the sheets and forming them with a controlled gas-mass flow while the dies in which they are formed may remain relativ...	04/14/1998
5515705	Apparatus and method for deforming a workpiece An apparatus and method is provided for controlling the temperature of dies and workpiece throughout a deformation process. Dies are capable of receiving external current to resistively heat the workpiece and dies during the deformation operation, the ext...	05/14/1996
5463886	Method and apparatus for manufacturing of soldering rod containing copper The invention concerns a process and an apparatus for manufacturing soldering rods with a copper percentage of at least 60 weight-%. An extruder serves to convert a block of the alloy at a temperature between 540° and 680° C. into an individual wire of ...	11/07/1995
5461768	Electrically heatable caulking system and method An electrical caulking method for a work made from a magnesium or a magnesium alloy wherein a caulking pin integrally projects from a body, wherein an electric caulking apparatus having two opposing electrodes is used. The work is held between the opposin...	10/31/1995
5435162	Zone heating apparatus A zone heating device has first and second spaced burners for heating first and second spaced sides of a metal plate during forming of a thickened edge along the edge of the metal plate. The first and second burners are elevationally movable by an actuato...	07/25/1995
5329087	Syringe needle destruction method and apparatus A method and apparatus are disclosed for destroying syringe needles. The apparatus has an incinerator unit (16) into which a syringe needle may be inserted, crimped by a crimper (30), the needle measured between its tip and the sealing crimp, burned by pa...	07/12/1994
5054301	Method of forming metallic product A metallic product is formed by an electric upsetter having anvil and clamp electrodes. The anvil electrode is made of a material having a relatively small thermal conductivity. A rod-shaped blank of a metallic material is placed between the anvil and cla...	10/08/1991
5051294	Catalytic converter substrate and assembly A substrate for a catalytic converter is formed of steel sheets embossed with corrugations in a chevron pattern such that the metal buckles at vertices of adjoining corrugations to form projections extending out of the plane of the sheet. The sheets are s...	09/24/1991
5042281	Isothermal sheet rolling mill A method and apparatus for the solid-state forming of a metallic feedstock into thin sheet or foil is disclosed that uses improved isothermal roll forging techniques. The improvements include the use of rotatable backup rolls for increasing hollow work ro...	08/27/1991
5040399	Method of fabricating box section from steel with walls that differ in thickness A method of fabricating box section from steel with walls of non-uniform thickness along its periphery. A starting product in the form of round tubing with a wall that is uniformly thick along its circumference is manufactured and rolled into box section ...	08/20/1991
4532793	Method for deep-drawing sheet metal and an apparatus for carrying out the method A method for deep-drawing sheet metal in a drawing apparatus having a drawing ring body, a pressure body, and a drawing plunger, which includes pushing a metal sheet having a deep-drawing region against the drawing ring body with the pressure body surroun...	08/06/1985
4175228	Method of hot bending a generally straight wire blank A method of hot bending a generally straight wire blank of a material being brittle in cold condition into a wire element having straight end portions and coils formed therebetween. According to the invention the rod blank is hot bent without a mandrel by...	11/20/1979
4132104	Method and apparatus for bending coated pipe including heating the pipe coating by resistance heating Method and apparatus for bending coated pipe including heating a specific area of the pipe coating by resistance heating to prevent damage at all areas of the pipe coating during bending of the pipe. The pipe bending equipment includes an upper bending di...	01/02/1979
4115685	Resistive heating of elongated stock Tubes, rods, etc., are heated electrically in that current is applied via movable electrodes, one of which tracks the front and another one tracks the rear ends, but the electrodes remain spaced-apart during most of the heating....	09/19/1978

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Class 72/342.96 - By passing electric current through work