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| Number | Title | Issue Date |
| 7944673 | Driving method of electromagnetic valve, electromagnetic valve driving unit and apparatus for coloring electric wire A coloring apparatus 1 includes a coloring nozzle 31 for spouting a coloring material, a signal generator 53, and a controller 19. The coloring nozzle 31 includes an electromagnetic valve 51. The signal generator 53 o... | 05/17/2011 |
| 7859816 | Bistable contactor drive circuit A bistable contactor drive circuit includes a series branch comprising a first relay coil and a control signal source is connected to a power supply. A third normally closed contact and an eighth normally opened contact of the first relay are connected to a positive... | 12/28/2010 |
| 7697254 | Power supply protecting circuit A power supply protecting circuit configured to protect an electronic device includes a normally open switch, a voltage dropping circuit, a first rectifier, and a relay having a coil and switch. A power terminal of the electronic device is connected to a power termi... | 04/13/2010 |
| 7639471 | Electrical circuit for a self-retaining relay An electrical relay circuit, comprising a load circuit with a series connection of a first generator (G1), a load component (R load) and a relay switch (S1) of a relay (RL1), wherein the relay switch (S1) has a closed position in which th... | 12/29/2009 |
| 7262950 | Relay device having holding current stabilizing and limiting circuit A relay device includes plural relay units, each having a coil for opening/closing a contact point, a base plate made of resin and having wiring metal pieces, and a control circuit mounted on the base plate for controlling current supply to the coil. The control cir... | 08/28/2007 |
| 7245474 | Circuit arrangement and method for controlling a bistable magnetic valve A circuit arrangement and also a method for controlling a bistable magnetic valve in which a magnetic valve is to be supplied with a pulse of electrical current in order to switch over the magnetic valve from a first stable state into a second stable state, comprise... | 07/17/2007 |
| 7142078 | Magnetic levitation actuator A magnetic actuator including a mobile magnetic part, a fixed magnetic part, and a mechanism for triggering displacement of the mobile magnetic part relatively to the fixed magnetic part. At least two amagnetic supports, placed in different planes, delimit a gap bet... | 11/28/2006 |
| 7069941 | Electronic faucets for long-term operation An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op... | 07/04/2006 |
| 7007527 | Electrified cylindrical lock An electrified cylindrical lock having a reversible solenoid that can be easily changed over between active push and active pull. The solenoid includes a coil and an armature that may be assembled for an active push or an active pull of a latch member. The coil has ... | 03/07/2006 |
| 7007779 | Electromagnetic brake assembly and power supply An electromagnetic brake assembly has a brake shoe) movable between a first position at which it is located in a braking engagement with a movable surface and a second position at which it is located out of braking engagement with the movable surface. An electromagn... | 03/07/2006 |
| 7003993 | Electrified cylindrical lock An electrified cylindrical lock having a reversible solenoid that can be easily changed over between fail safe and fail secure. The solenoid includes a coil and an armature that may be assembled for an active push or an active pull of a latch member. The latch membe... | 02/28/2006 |
| 6985345 | Method and a device for operating an electro-magnet on an intrinsically safe direct current circuit The present invention relates to a method for operation of an electro-magnet (2, 3) connected to an intrinsically safe direct current circuit which can be switched under control between two positions for the operation of the closing body of a hydraulic valve ... | 01/10/2006 |
| 6976569 | Pulse width modulation of brake shift interlock solenoid An apparatus and method is provided for an improved brake shift interlock system which reduces solenoid noise created by vehicle vibrations and solenoid activation. The brake shift interlock system includes a park position switch, a brake sensor, and a control circu... | 12/20/2005 |
| 6950000 | High initial force electromagnetic actuator An electromagnetic actuator is provided that comprises a housing, a solenoid coil, and an armature. The armature can move between a first position proximate a portion of the housing and a second position distal of the portion of the housing. The armature and the por... | 09/27/2005 |
| 6873514 | Integrated solenoid system An integrated solenoid system including a single housing containing a solenoid, a controller and one or more electrical connections. The controller includes temperature compensating means and/or voltage compensating means thereby providing predetermined, substantial... | 03/29/2005 |
| 6845300 | Control methods for electromagnetic valve actuators An electromagnetically operated valve assembly (28) has a first solenoid (58) and a second solenoid (60). An armature (56) having a valve stem (54) coupled thereto is positioned between the first solenoid (58) and second sol... | 01/18/2005 |
| 6775114 | Electronic drive control apparatus An electronic drive control apparatus for controlling a drive coil of a contactor includes a microcontroller configured for generating an inverted pulse width modulated signal, and at least one semiconductor switch. A pulse-shaping stage is connected downstream of t... | 08/10/2004 |
| 6760211 | Remote activation mechanism for equipment hold down and release Remote activation mechanism for equipment hold down and release, composed of a fixed base (1); a disk with capacity to rotate (2); a ring (3) subdivided in independent segments; a helical torsion spring (4) mounted around the segmented, b... | 07/06/2004 |
| 6678142 | Method of controlling an actuator An actuator has an actuating element and an actuating drive with an electromagnet with a coil. An armature, which can be coupled to the actuating element, can move between a first contact surface on the electromagnet and a second contact surface. An initi... | 01/13/2004 |
| 6576951 | Four-terminal system for reading the state of a phase qubit Quantum computing systems and methods that use opposite magnetic moment states read the state of a qubit by applying current through the qubit and measuring a Hall effect voltage across the width of the current. For reading, the qubit is grounded to freez... | 06/10/2003 |
| 6256185 | Low voltage direct control universal pulse width modulation module An electrical control module and circuit for controlling a solenoid. The control circuit provides a constant voltage to a solenoid for a predetermined time period after which a pulse width modulated voltage is supplied. The circuit further includes compon... | 07/03/2001 |
| 6166896 | Method of increasing the cast-off speed of the armature in an electromagnetic actuator A method of increasing a cast-off speed of an armature from a pole of an electromagnet of an electromagnetic actuator, includes the following steps: holding the armature at the pole against a force of a resetting device by maintaining an electric holding ... | 12/26/2000 |
| 6122158 | Wide voltage range driver circuit for a fuel injector A driver circuit is provided for an electromagnetic fuel injector having a coil and powered by a supply voltage. The driver circuit includes a comparator to control activation current to the coil of the fuel injector and transistor structure operatively a... | 09/19/2000 |
| 6061224 | PWM solenoid driver and method A solenoid driver circuit includes an input terminal for receiving a solenoid actuation pulse, an output terminal for connection to a terminal of a solenoid coil, a pull-in current adjustment terminal, and a hold-in current duty cycle adjustment terminal.... | 05/09/2000 |
| 5999396 | Circuit for driving a contactor The circuit on which the present invention is based has a control circuit in which a switching element and a measurement resistor are connected in series with the contactor coil. A pickup current control circuit picks up the voltage at measurement resisto... | 12/07/1999 |
| 5991144 | Circuit for tripping breaker An apparatus for tripping a circuit breaker having a trip coil. A trip circuit is coupled at a first node to a first power supply and at a second node to the trip coil. The trip circuit comprises a switch for closing in response to a control signal, a coi... | 11/23/1999 |
| 5889646 | Circuit configuration and method for triggering at least one electrically triggerable magnet In a circuit configuration and a method for triggering at least one electrically triggerable magnet with a suitably targeted triggering power, the magnet switches a switching element into a desired switching position in which the switching element is reta... | 03/30/1999 |
| 5870270 | Non-burnout controller for a switching coil A non-burnout controller for a switching coil is disclosed. The controller has a pulse timer, a relay switch, and an actuation switch. After being reset and actuated, the pulse timer defines a pulse having a predetermined pulse period. The relay switch ha... | 02/09/1999 |
| 5815365 | Control circuit for a magnetic solenoid in a modulating valve application A solenoid control circuit is disclosed for providing the initial pull-in power to a magnetically-held solenoid and thereafter providing a release-pulse upon power loss to the circuit to release the solenoid. The solenoid control circuit has an AC input w... | 09/29/1998 |
| 5805405 | Power supply circuit of an excitation coil of an electromagnet A power supply circuit, using direct current or rectified alternating current sources having output and return supply lines (a, b), for a coil of an electromagnet having at least one principal winding (B1) and a secondary winding (B2). The power supply ci... | 09/08/1998 |
| 5793599 | Control of the attraction of an armature of a switching magnet and a switching arrangement for performing the method A method of energy-saving regulation of the attraction of an armature of a switching magnet, particularly an electromagnet for a control element in an internal combustion engine, wherein a medium voltage UZ is formed by switching to the lowest-... | 08/11/1998 |
| 5654865 | Power and control circuit for an electric door strike This invention discloses a versatile power and control circuit for an electric door strike that is operable in four different modes with readily adjustable release times. In addition, the invention is directed toward the provision of a highly efficient po... | 08/05/1997 |
| 5475561 | Solenoid circuit A solenoid circuit for particular use in a transmission controller measures the instantaneous current through the solenoid coil with the use of a current switch operating in an on mode to cause the current in the coil to increase and an off mode to cause ... | 12/12/1995 |
| 5467248 | Relay control circuit A relay control circuit in which a capacitor is used as a power source of a transistor which prohibits operation of the transistor which is operated by input by switch operation. If power is no longer supplied to the entire relay control circuit while the... | 11/14/1995 |
| 5461563 | Non-stage transmission control system In a non-stage transmission control system, the output current instruction signal of a microcomputer is provided as a pulse-width-modulated signal, with a result that the number of signal lines from the microcomputer is reduced. Furthermore, the current f... | 10/24/1995 |
| 5394291 | Relay energizing circuit A method of energizing a relay comprising the steps of applying an energization signal to the relay having a voltage in excess of a rated voltage of the relay and then allowing the energization voltage to rapidly decay to a level within the rated voltage ... | 02/28/1995 |
| 5379178 | Method and device for triggering an electromagnetic consumer In the case of a method and a device for triggering an electromagnetic consumer (1), which is connected in series to a switching means (2), the voltage applied to the switching means (2) is fed to a voltage comparison means (12) and compared there to the ... | 01/03/1995 |
| 5363270 | Rapid response dual coil electromagnetic actuator with capacitor An electromagnetic actuator having an integral capacitor and secondary coil for reducing opening and closing response times without the need for switching circuits. The secondary coil produces a magnetic field during energization which aids the primary co... | 11/08/1994 |
| 5341032 | Inductive load drive circuit, particularly for fuel injections A circuit comprising a switch series connected to a load; a first and second current recirculating branch alternately connectable parallel to the load, for reducing the current in the same; and a logic control unit for opening and closing the switch and r... | 08/23/1994 |
| 5335136 | Electronic circuit arrangement for triggering solenoid valves The invention relates to an electronic circuit arrangement for triggering excitation windings of electromagnetic components, provided with supplementary circuit elements, in particular free-running circuit elements, preferably solenoid valves (MV1 | 08/02/1994 |
