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Class 219/110 - Controlled in response to current, voltage, or temperature


Subclass of Class 219 - Electric heating
Definition: Subject matter which is controlled in response to current
No. of patents: 301
Last issue date: 07/20/2010


1                
NumberTitleIssue Date
7759596Method for controlling weld energy
A method for controlling weld energy used in a welding process. The method includes establishing a weld energy profile having a total weld energy used over the period of the weld cycle. During the welding process, the expulsion rate is monitored and used to modify t...
07/20/2010
7718918Production or assembly line method of spot welding
A production line method of resistance welding comprising the steps of contacting a metal sheet with an electrode having an initial contact surface area at a force to provide a pressure to the metal sheet; applying a current though the electrode to the metal sheet; ...
05/18/2010
7655880Method for monitoring a resistance welding process and device therefor
A method for monitoring a resistance welding process carried out on a stack of metal workpieces (1) clamped between two electrodes (2a, 2b) of a clamp (3), and a device therefor. According to the method, the electrodes (2...
02/02/2010
7432466Method of electrical resistance spot welding
A method of resistance welding comprising the steps of contacting a metal sheet with an electrode having an initial contact surface area at a force to provide a pressure to the metal sheet applying a current through the electrode to the metal sheet; measuring dimens...
10/07/2008
7388171Power supply apparatus for welder
Welding conditions are set for a power supply apparatus for use with a welding machine, using a control panel unit (96). A memory (105) stores therein welding conditions as set through the control unit (96), and holds the set welding conditions ...
06/17/2008
7359830Method for automatic on-line calibration of a process model
A method is disclosed for collecting and processing raw process data. The method includes processing the raw data through a process model to obtain a prediction of the process quality; processing this prediction through two dynamic transfer functions thus creating t...
04/15/2008
7342209Microprocessor controlled tube apparatus having reduced radio frequency emanations
A tube apparatus is provided to detect successful or failed tube operations. The tube apparatus includes jaws mounted for movement with respect to one another between (1) a first position spaced from one another and (2) a second position selected to perform a succes...
03/11/2008
7301118Welding gun with controller and method for using same
A welding gun assembly including a housing that defines a first chamber and a second chamber. The assembly also includes a first piston moveably disposed in the first chamber and a second piston moveably disposed in the second chamber. The assembly includes an inten...
11/27/2007
7291803Method and device to obtain information to evaluate the quality of a resistance welding connection and/or to control or regulate a resistance welding method
Method and device for obtaining information to evaluate the quality of a resistance welding connection and/or to control or regulate a resistance welding method. Method and device include performing a resistance welding procedure on workpieces, performing a step inc...
11/06/2007
7282663Forge welding process
An automated method for forge welding tubulars including heating the tubular ends to be joined in a welding chamber while the heated tubular ends are maintained aligned and parallel relative to each other and at a small spacing, whereupon the heated tubular ends are...
10/16/2007
7259349Method for monitoring the quality of spot welding
A method for monitoring the quality of spot welding, in particular for robotic applications. Workpieces, such as metal sheets are welded together using spot welding tools. The sheets are placed between at least two electrodes, which are pressed against one another a...
08/21/2007
7256365Electrode holder with integrated ultrasound sensor
A connecting element for connecting and/or fixing an electrode with an electrode arm of a welding apparatus has a base body; and a sensor selected from the group consisting of a sensor for introducing ultrasound waves into an electrode, a sensor for receiving ultras...
08/14/2007
7253632Method for qualifying joints and contacts of electric circuits
In a method for qualifying an electric circuit having at least one contact, a reference function of thermoelectric voltage versus time of a faultless electric circuit is provided. The circuit is heated by at least one measuring electric impulse. Thermoelectric-volta...
08/07/2007
7247998Transient detection of end of lamp life condition apparatus and method
A sensor system adapted to detect unwanted transients in the primary side of a luminous lamp load driving circuit and effect a change in operation of the driving circuit. A detection circuit is adapted to detect a transient, determine if it is an appropriate end-of-...
07/24/2007
7247810Module for resistance welding tongs
The invention originates in the field of resistance welding technology, among other means by means of welding robots 1, for use in roll seam welding, projection welding or spot welding, and has to do with accommodating components for operation inside the hous...
07/24/2007
7244905Method for estimating nugget diameter and weld parameters
A method for estimating weld nugget diameter includes receiving current and voltage inputs, a time input, and a force input. In certain embodiments, the method also uses other weld parameters including type of material, type of stack, stack thickness, applied force,...
07/17/2007
7242775Optical pulse calibration for quantum key distribution
Methods and systems for generating calibrated optical pulses in a QKD system. The method includes calibrating a variable optical attenuator (VOA) by first passing radiation pulses of a given intensity and pulse width through the VOA for a variety of VOA settings. Th...
07/10/2007
7238917Device to control power source
A device to control operation of a power source for an electric arc welder comprising an oscillator for inducing a high frequency voltage into a series circuit including the welding gap, a detector tuned to the high frequency for sensing the level of current in the ...
07/03/2007
7235677Method of improving the operation of an existing ethylene oxide manufacturing process and system
Described is a method of improving the process and operation of an existing system for manufacturing ethylene oxide. The ethylene oxide manufacturing system includes an epoxidation reactor system containing a volume of high activity epoxidation catalyst. The method ...
06/26/2007
7233882Method and apparatus for monitoring process transitions
A method for identifying modes and transitions during plant operation, wherein measured values of process variables are used to evaluate a current state of the process and its sections and subsections. An identified state of the plant is signaled and the plant is mo...
06/19/2007
7216793Friction stir welding travel axis load control method and apparatus
A friction stir welding (FSW) travel axis load control method and apparatus for controlling a travel axis load applied to a FSW setup during the joining of workpieces by FSW. The method and apparatus recognize that controlling certain attributes of a friction stir w...
05/15/2007
7184900Method of measuring a monophase voltage
The present invention is related to a method for measuring the instantaneous value of a monophase AC voltage signal Ve, comprising the steps of: applying said voltage signal Ve to a first input of a phase comp...
02/27/2007
7145097Method and apparatus for electrical resistance spot welding using electrical servo actuator
The present invention provides a servo driven spot welder where an electric servo actuator moves at least one of two electrodes to and away from the workpiece. The servo driven spot welder includes a controller that allows accurate control of the position of one of ...
12/05/2006
7132617Method and system for assessing quality of spot welds
A system and method for assessing the quality of spot weld joints between pieces of metal includes an ultrasound transducer probing a spot weld joint. The ultrasound transducer transmits ultrasonic radiation into the spot weld joint, receives corresponding echoes, a...
11/07/2006
7128621Connecting structure and its connecting method, and rotating machinery and alternating current
A connecting structure in which the electric cable having an insulated coating and the electrically conductive member with non-insulated coating are connected through a connecting terminal having a junction support member by applying an electric current, heating and...
10/31/2006
7127438Method of regulating and controlling a technical process such as spot-welding of metal sheets
A method for controlling and driving a technical process executed in time by applying at each time t instructions Ci(t), leading to a measurable but not observable result R(t) and generating a plurality of observable quantities distinct from the result R(t) whereof ...
10/24/2006
7085731Computer system configuration and method for a store
Disclosed are computer system configurations and methods for a retail store. In an exemplary system, a CPU and program in a checkout station make a list of the products selected by the customer. The CPU and program processes paper coupon information in the context o...
08/01/2006
7064290Electric arc welder and method for controlling the welding process of the welder
An operating system is provided for an electric arc welder including a high switching speed inverter power source for creating an arc voltage and arc current between an electrode and a workpiece. This operating system regulating the arc voltage to provide a voltage ...
06/20/2006
7060929Sheet-to-tube resistance spot welding using servo gun
A method of spot welding a sheet overlapped to a tube with a servomotor-driven electrode applying a clamping force to the sheet. Over a first clamping time interval, the clamping force is increased to a first force level, at which point a welding current is applied ...
06/13/2006
7053330Projection weld-bonding system and method
A method of welding and a projection weld bond system is disclosed. A first workpiece is provided that is made of a material that conducts electricity, and a second workpeiece is provided that is made of a material that conducts electricity and has a plurality of pr...
05/30/2006
7053328Method for connecting film-coated wire to subject member
A film-coated wire is wound around a terminal at least one turn and pressed by an upper electrode of a resistance welding machine. A current is passed through the upper electrode when the wire is pressed, and heat is produced. The heat melts a film on the wire. The ...
05/30/2006
7039500Multiple arm robot arrangement
An improved robot arrangement for performing predetermined tasks, such as paint finishing, features equipping a robot with a plurality of manipulatable arms, with at least two of the arms performing like operations. Alternatively, a plurality of commonly controlled ...
05/02/2006
7038591Apparatus for testing and marking workpieces
A workpiece testing and marking system includes an apparatus for testing a workpiece and for selectively generating a signal that is representative of a result of the test. The system also includes a marker that is adapted to provide a visual indication on the workp...
05/02/2006
7023217Method and apparatus for determining wear of resistive and conductive elements
According to one embodiment, the present invention provides a system for determining wear of an electrical element. The system includes a current source, a voltmeter and a control unit. The control unit is operable to couple the current source and the voltmeter to a...
04/04/2006
7020171Laser oscillator
A laser oscillator that, in accordance with a laser output instruction value or a current instruction value that is input, excites a laser medium and obtains a desired laser output comprises: reference waveform generation unit for employing the laser output instruct...
03/28/2006
7019498Power factor correction circuit
A method of power factor control for a power regulation system connected for supplying electric power to a reactive load, the power factor being characterized by a phase difference between a voltage waveform and an induced current waveform, the method comprising the...
03/28/2006
7006958Method for controlling distortion of a material during a weld process
A method for controlling distortion of a material during a weld process. The method includes modeling the weld process of the material, determining distortions produced by the weld process, determining a plurality of simulated induced distortions in the model to off...
02/28/2006
6976308Method for conductively connecting first and second electrical conductors
A method for conductively connecting first and second electrical conductors is described which consist of different materials. In carrying out the method the ends of the first and second conductors are brought into mechanical contact with each other in an overlappin...
12/20/2005
6933462Plasma processing apparatus for monitoring and storing lifetime usage data of a plurality of interchangeable parts
A plasma processing apparatus capable of making an accurate lifetime assessment for each of plural consumable parts (the definition of “the consumable part” is an electrode and/or a nozzle) so that effective use of the consumable parts becomes possible leading t...
08/23/2005
6933636Resolver I/O terminal structure and method of connecting resolver thereby
A terminal for a resolver that operates in a high temperature environment is presented. The terminal includes a terminal block having a through groove. The through groove provides a resistive welder with access to flat terminals mounted on the terminal block. Resist...
08/23/2005
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