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Patent Searching and Data


Matches 551 - 600 out of 12,241

Document Document Title
WO/2003/015113A1
A dispenser (10) having a reservoir for holding a web (11) characterized by a web dielectric constant and a charging station (17, 18) for charging the web by tribocharging when the web is removed from the reservoir. The charging station ...  
WO2002099446B1
A power switching control device (1) and methods for using the same to control a magnetic actuator (15) within a power switching device (10) are disclosed. The power switching control device uses a series of modulated current pulses to c...  
WO/2003/007317A1
This invention relates to a method for solenoid control comprising the following steps:- providing a freewheel circuit comprising a solenoid (S), connected to a system power - supply (V) via a resistive shunt (Rs) and a freewheel diod (D...  
WO/2002/103729A2
The invention relates to a method for supplying power to a piece of electrical equipment (1) which operates using intensity peaks and which is connected to a voltage converter (4) by means of at least one capacitive element (5). The volt...  
WO/2002/099446A1
A power switching control device (1) and methods for using the same to control a magnetic actuator (15) within a power switching device (10) are disclosed. The power switching control device uses a series of modulated current pulses to c...  
WO/2002/097988A1
An on/off control circuit is provided that controls the application of power to a device. The effectiveness of the on/off control circuit is optimized with regard to cost, power consumption, component life, and utility. An R-C circuit is...  
WO/2002/095282A2
The invention relates to a safety switching module for reliably switching off an electrical load (43) comprising a first and a second switching control device (20A, 20B) and a first switching element (24.1) and a second switching element...  
WO/2002/082485A1
A switching circuit comprises a switching element, preferably a triac, connected in series with a drive coil of a switch, the switch being operable in response to a pulse of current through the drive coil, the switching element being ope...  
WO/2002/078160A1
A method and system for driving an electromagnetic device are provided. The driving is carried out by energizing the electromagnetic device by applying a train of drive voltage pulses across an operating coil of the electromagnetic devic...  
WO2000039822A9
A method of detecting manual trips and reclose operations in an intelligent electronic device, e.g., electronic trip unit or protective relay, is presented. The intelligent electronic device includes a microcontroller and associated memo...  
WO2000039823A9
A method of determining contact wear in a trip unit of a circuit breaker is presented. The trip unit includes a microcontroller and associated memories. An algorithm (program) stored in a memory of the trip unit measures temperatures rel...  
WO/2002/063738A1
According to the invention, a safe plugging-in of a fuse or a plug, without creating an arc may be achieved, whereby a device (1) for the disconnection and connection of a load (2) is provided with a control device (4) and a switching el...  
WO2002042873A3
A self-powered switching device using a prestressed flextensional electroactive member generates a signal for activation of a latching relay. The electroactive member has a piezoelectric element with a convex and a concave face that may ...  
WO/2002/054555A1
A medium voltage switching device comprising an electromagnetic actuation chain and power supply means for providing electric power to said electromagnetic actuation chain. The power supply means comprise at least a first power supply de...  
WO/2002/042873A2
A self-powered switching device using a prestressed flextensional electroactive member generates a signal for activation of a latching relay. The electroactive member has a piezoelectric element with a convex and a concave face that may ...  
WO2002013388A3  
WO/2002/021552A1
When a left-hand pushbutton switch is on, a second relay (RL2) is demagnetized to open the normally closed contact (RL2-1) of the second relay (RL2) and a relay contact circuit (RC). When the left-hand pushbutton switch turns to a second...  
WO/2002/013388A2
The invention relates to a method for operating a safety switching device (2). According to said method, at least one electric device (18, 22) is monitored and the energy supply to an electric device (10a, 10b) is actuated. The functions...  
WO/2002/011165A1
The invention relates to a safety switch (40) for safely switching off an electric consumer (42), especially an electrically driven machine. The inventive switch comprises an error-protected switch-off unit (48) and a monitoring unit (54...  
WO2001004923A9
A system and method for a pulse width modulated (PWM) solenoid driver with a reduced rate of power consumption. The system for driving a solenoid includes a solenoid, a current set-point for establishing a desired current flow through th...  
WO/2001/097239A1
The aim of the invention is to achieve an even burn-off of the switching contacts (8) of a switching device (2), especially a contactor, and hereby ensure as long a service life as possible. To this end, an optimum switching point, in te...  
WO/2001/091149A1
The invention relates to a protective circuit for a breaker gap (2), said gap being used to connect a load voltage (UL) to a load (1). The circuit is characterized in that a voltage detection circuit (3) is connected to a detection point...  
WO/2001/086680A1
The invention relates to a safety switching device (10), for the safe switching on and off of an electrical user (24), in particular, an electric motor, with an electromechanical switching element (12), comprising at least one adjustable...  
WO/2001/082321A1
A contactor control circuit has a central controller connected to a mains input control failure detector circuit. When the mains input power switches off, the mains input control failure circuit instructs the central controller which in ...  
WO/2001/082668A1
The invention relates to a module arrangement of safety switching devices, comprising at least one input module (18) for processing the signals of a transmitting safety device (20) and for generating output signals; and at least two outp...  
WO/2001/081820A1
The invention relates to a modular safety switchgear system for switching actuators (21) on and safely off, comprising at least one input module (18) for safely evaluating a safety device (20) and for generating an output signal, and at ...  
WO/2001/080266A1
The invention relates to a controlling of micromechanical elements. Especially the invention relates to the controlling of the micromechanical switches. According to a method for controlling at least one micromechanical element a first c...  
WO/2001/069625A1
The invention relates to an electromagnetic switching device, in particular a contactor, comprising a switching device housing (2) and a plug-in module which can be inserted into the latter and which contains a coil form (12) for a coil....  
WO/2001/067610A1
The invention relates to a security switching device for securely switching on and off an electric consumer (84), especially an electrically driven machine, that has at least one first and one second electronic switching element (56, 58)...  
WO/2001/065578A1
The invention relates to a circuit subassembly (1, 1') that is secure in itself and is provided with two actuators (2, 3) connected in series and a secure control unit (4). The aim of the invention is to produce several trip circuits tha...  
WO/2001/065577A1
The invention relates to a safety switch device (10) with a first (12) and a second (14) input circuit breaker, the positions of which, redundant to each other, define an input side regulation value ($g(D)t). The safety switch device (10...  
WO/2001/063977A1
A control circuit for driving a plurality of electrical loads, one at a time, has a converter circuit for receiving a DMX compatible digital control signal and extracting a plurality of address bits therefrom. A decoder circuit receives ...  
WO/2001/060652A1
A relay fusion detector (10) which is mounted on an electric vehicle, wherein interposed between a power unit (12) consisting of a plurality of secondary batteries and a load circuit including an electric motor is a relay (14) for turnin...  
WO/2001/054152A1
A relay (70) includes contacts (73) residing within a glass tube (72). A coil (76) surrounding the tube (72) and a switch (66) are connected in parallel between two terminals (77) of the relay (70). A current source supplies a current to...  
WO/2001/052294A1
An inductive load driver (100) having an inductive load (L) and a bridge circuit (102) connected in parallel with the inductive load, wherein the bridge circuit (102) generates a current to the inductive load that rapidly rises.  
WO/2001/048776A1
Disclosed is a simple and cost-effective circuit arrangement for providing current by means of an inductive component which is impinged upon with the supply voltage using a switch element. The aim of the invention is to guarantee that th...  
WO/2001/048372A1
The invention concerns a method for powering a motor vehicle electric starting switch (10) which consists in feeding on an input circuit (T1, B, 20, 25) of the switch (10) an efficient powering signal (R1, R2, R3) with selected pattern. ...  
WO/2001/048775A1
A device for controlling the opening/closing operation of an electric switchgear in a power distribution network comprising a control unit, for controlling an electromagnetic actuator operatively connected to the movable contact of said ...  
WO/2001/041174A1
The invention provides that, in an electromagnetic switchgear, the travel-time behavior of the contact carrier (5) is measured using a magnetic field sensor (10). To this end, a microprocessor (16) evaluates the output signal of the magn...  
WO/2001/039229A1
The invention relates to a configuration comprising two switching contacts (a, b) connected in series and their two contactors (Sa, Sb). The tripping signals (1, 2) of said two contactors are generated with a variable time-delay ($g(D)t)...  
WO/2001/039228A1
The inventive switching device has a magnet system comprising a yoke (1), around whose limb (6) a measuring coil (5) is situated. The voltage induced in said measuring coil (5) is integrated in order to determine the magnetic flux. The m...  
WO/2001/037302A1
The invention relates to a safety switch device (10), for switching on and safely switching off an electrical user, in particular, an electrically-driven machine (34), comprising a first (14) and a second (16) electromechanical switch el...  
WO/2001/035432A1
A fail-safe, fault-tolerant switching system for a critical device includes a first pair of terminals for connection to a power source; a first network including a first fuse device, first switching device and third switching device conn...  
WO/2001/031664A1
An optically controlled micro-electromechanical (MEM) switch is described which desirablyutilizes photoconductive properties of a semiconductive substrate upon which MEM switches arefabricated. In one embodiment the bias voltage provided...  
WO/2001/027954A1
The invention relates to an actuator unit (A) which is provided with at least two contactors (1, 2) and a secure control unit (3). A three-phase circuit (4) with a secondary voltage of at least 380 V is opened as soon as at least one of ...  
WO/2001/027956A1
The invention relates to a base actuator (1) and an additional actuator (2) which securely open and close a useful circuit (4). The base actuator (1) can be activated/deactivated by supplying/not supplying electric energy during normal f...  
WO/2001/027955A1
The invention relates to an actuator unit that is provided with a base actuator (1) and an additional actuator (2). A useful circuit (4) can be opened and closed by means of said actuators. The base actuator (1) can be activated by suppl...  
WO/2001/022461A1
A pulse driving source circuit includes a positive temperature coefficient self-heating resistor which is connected to the driven circuit in series. By connecting a unidirectional element to the driven circuit, a positive or negative dri...  
WO/2001/020630A1
The invention relates to an electromagnetic switching device (1). The aim of the invention is to control at least the correct connection of an input (2) and an output contact (3) by means of a contact bridge (4). To this end, a control c...  
WO/2001/020632A1
The invention relates to an electromagnetic switchgear comprising an opening driver element (7) with which a contact driver (3) can be displaced out of an inoperative position (R) and into an operative position (B). To this end, a contac...  

Matches 551 - 600 out of 12,241