Matches 1 - 48 out of 48


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8993941 Induction heating device  
Plural induction heating coils for inductively heating to-be-heated object are provided under a top plate on which to-be-heated object is placed, and plural inverter circuits for supplying...
6911632 Method for controlling the position of a foil strip edges  
A method for controlling the edges (7, 7′) of a foil strip guided in a shaping funnel of a device producing tubular bodies from the foil strip by an overlapping weld seam using a guide wedge, the...
6452139 Method of joining metal components  
A process for joining high strength metal components by electromagnetic forming techniques. One of the metal components carries high loads or is subjected to combined stresses and strains, thus...
6359267 Induction heating system  
An induction heating system that can be used to braze metals and that overcomes many of the disadvantages of conventional brazing systems. The induction heating system improves quality and lowers...
6264765 Method and apparatus for casting, hot rolling and annealing non-heat treatment aluminum alloys  
This invention provides a method and apparatus for casting, hot rolling and annealing of non-heat treatable aluminum alloys which comprises continuously casting, hot rolling, and, in-line with the...
5902506 Matching apparatus for connecting high frequency solid state electrical power generator to a load  
High frequency electrical heating apparatus in which metal parts are heated as they are advanced,either for annealing or forge welding purposes,and in which the electrical heating current is...
5889262 System for and method of automatically controlling amount of input heat in high-frequency electric resistance welding machine  
A system and a method for automatically controlling an input heat amount of a high-frequency electric resistance welding machine. The automatic input heat amount control system includes a coil...
5820703 Production method of steel pipe excellent in corrosion resistance and weldability  
A steel pipe having excellent corrosion resistance in an environment containing wet carbon dioxide and a small amount of hydrogen sulfide and having also excellent weldability is produced at a low...
5777299 Induction generator to heat metallic pipes with a continuous process under a controlled atmosphere  
An induction heating generator is described for braze-welding metallic pipes with a continuous process under a controlled atmosphere, comprising at least one heating inductor composed of two...
5223683 High frequency electronic welding system  
A high frequency welding system for tubular members applies high frequency current I to the gap for creating an alternating field. According to magnetic flux of the alternating field, an opposed...
4798925 Method for measuring effective heating power for high frequency heating  
A method of measuring an effective heating power applied to a workpiece at a position to be heated by a high frequency heating apparatus having a source of high frequency AC power connected to a...
4621176 Method of and device for monitoring and/or controlling welding current in the high-frequency resistance pressure welding of pipes with longitudinal seams  
It is necessary to determine welding temperature as precisely as possible in order to properly control the high-frequency welding of longitudinal pipes. Changes in welding temperature are...
4599502 Induction hardening of steel  
A method for induction hardening through hardened chromium-molybdenum hot work die steel comprising the steps of induction heating to a uniform temperature above the upper critical temperature,...
4584453 Method and an apparatus for inductively welding a front fork of bicycle  
The present invention discloses a method for welding the front fork of a bicycle which makes each junctures among the joint, the handlebar, and the fork blades simultaneously reach the melting...
4578564 Series-connected, skin-current heating pipe including current trouble detector  
A series-connected, skin-current heating pipe circuit includes a first ferromagnetic pipe; a first insulated wire extending along and inside the first pipe; a first AC source connected to one end...
4535215 Method and device for controlling the welding process in the manufacturing of pipes with longitudinal seams  
It is necessary to determine the effects of welding pressure in order to control the high-frequency welding process in the manufacture of pipes with longitudinal seams. It has been discovered that...
4479043 Controlling the zone of longitudinally seam-welding split tubes  
The h.f.-heated edges of a split tube are prepared prior to heating by means of contour-rolling the edges in order to obtain a convex contour in which the temperature is isothermically...
4377732 Method of and apparatus for the production of profile members and hollow bodies from a plurality of metal strips of constant thickness  
A method and apparatus for manufacturing metal profile members, hollow bodies and the like wherein a plurality of continuous band-like metal strips of constant wall thickness as viewed in...
4357512 Apparatus for continuous manufacture of butt-welded pipe  
An apparatus for continuous manufacture of butt-welded pipes is constituted by a heating furnace for heating a skelp continuously passed therethrough up to a predetermined temperature less than...
4303826 Shielded skin-effect current heated pipeline  
A pipeline to be laid over a very long distance e.g. 100 km, and heated by skin-effect-current, and used underground or on the seabed by employing an electric source frequency lower than...
4165246 Process for the heat treatment of thick walled steel pipes  
A process in which pipes, particularly thick walled pipes, are inductively heated to the austenization temperature, quenched with a coolant to form martensite in the surface zone, then drawn, with...
3873830 Method and apparatus for monitoring the quality of welds in seamed tubes  
A method and apparatus for investigating the possible existence of paste weld condition in the seam of a welded tube comprises scanning the area of the weld transverse to the axis of the seam with...
3824366 PROCESS AND APPARATUS FOR ANNEALING THE WELD BEAD OF A WELDED METALLIC TUBE  
An apparatus for treating continuously welded metallic tubes comprises a ies of longitudinal inductors mounted on movable carriages which are adapted to be pivotal co-axially with respect to the...
3733454 OSCILLATOR TUBE FILAMENT CIRCUIT FOR HIGH FREQUENCY WELDING GENERATOR  
A high frequency welding apparatus for obtaining consistently high quality welds in metals, particularly those having low magnetic permeabilities and high thermal conductivities. The filament...
3621175 CONTINUOUS WELDING  
Welding together two elements by placing their surfaces next to each other, moving them simultaneously along a path, heating successive zones of the elements at a station on the path and...
3590201 PHOTOELECTRIC CONTROL SYSTEMS FOR BRAZING TOOLS  
A temperature-sensing system which is particularly adapted to be utilized in conjunction with a brazing operation wherein the temperature at the point of brazing is sensed and the brazing...
3573416 METHOD AND DEVICE FOR SELF-REGULATED WELDING IN THE MANUFACTURE OF LONGITUDINALLY WELDED METAL TUBES  
A method according to which the most important quantities in the manufacture of welded metal tubes, i.e. feeding speed of the metal band, upsetting pressure, intensity of the whole welding...
3502840 DEVICE FOR MAGNETIC-AND-PULSE WORKING OF METALS WITH PRESSURE  
3346712 Automatic temperature control  
3310651 Induction heating apparatus for a longitudinally moving workpiece  
3282667 Method of making hollow glass fibers  
3258573 Welding and forming method and apparatus  
3253112 Tube welding  
3042788 Welding system with scanning weld current  
2892914 Methods and apparatus for butt welding  
2819369 Dimension gaging system  
2794893 Induction welding  
2769887 High speed induction welding  
2649529 Means for and process of heattreating material to be welded together  
2632092 Means and method for high-frequency induction heating  
2615286 High-frequency apparatus for severing vitreous articles  
2458563 Tube-forming device  
This invention relates to apparatus for forming tubes from fusible flat web material. Such apparatus normally includes means for advancing the web forwardly of a mandrel and into tubular form and...
2205425 Apparatus for welding  
The present invention relates to improvements in induction apparatus and methods of the kind disclosed in my copending application entitled Induction apparatus and methods, Serial No. 135,800,...
2205424 Induction apparatus  
The present invention relates to induction apparatus, particularly such apparatus adapted for induction welding. The principal object of the invention is to provide induction apparatus which are...
2086306 Speed control for progressive electric heating and welding  
My invention relates to progressive electric heating or welding wherein the travelling work, which is to be heated or welded, is caused to move at suitably reduced speeds when a predetermined...
1986369 Method of and apparatus for electric heating and welding  
1966534 Induction heating and welding apparatus  
1862316 Pipe-welding system  

Matches 1 - 48 out of 48