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| Number | Title | Issue Date |
| 8144448 | Control unit comprising a closed-loop controller for regulating the electrical coil current of a regulating electrovalve A control unit has a closed-loop controller which is connected to a regulating electrovalve by way of a feedback branch, forming a closed-loop control circuit, in order to regulate the electrical coil current of the regulating electrovalve. The armature of the elect... | 03/27/2012 |
| 8027140 | Reed switch arrays An array of reed switches (13) is assembled on a circuit board (11) having a plurality of through-apertures (12) with one reed switch (13) disposed in each aperture with the axis of the switch envelope (14) extending perpendicularl... | 09/27/2011 |
| 8023243 | Quick-operating valve The switching valve of a quick-operating slider system is an electrically operated stop valve. In the case of a required rapid shutoff, the coil (19) must be de-energized in a very short period of time in order to allow the switching valve (18) to open... | 09/20/2011 |
| 7944671 | Control apparatus and control method of electromagnetic drive valve operating mechanism When a target valve timing determined in accordance with the state of operation of an internal combustion engine is acquired, a feed forward control of setting a command timing of a valve body on the basis of the target valve timing and a predicted delay time is per... | 05/17/2011 |
| 7903383 | Solenoid valve driving circuit and solenoid valve A current detection circuit generates a pulse signal Sd based on a voltage Vd corresponding to a current I flowing through a solenoid coil, and feeds the pulse signal Sd back to a PWM circuit of a switch controller. The PWM circuit generates a pulse signal Sr having... | 03/08/2011 |
| 7898788 | Electronic control device for electromagnetic unit An electronic control device for a switch unit, which includes an electromagnetic actuator having a control coil powered by an excitation current for closing a power electrical circuit. The electronic control device includes a storage unit for storing at least one c... | 03/01/2011 |
| 7881035 | High-pressure fuel pump drive circuit for engine There is provided a high-pressure fuel pump drive circuit for manipulating the electric current to be passed to a solenoid coil for controlling a high-pressure pump. This circuit is characterized in that a first switching element, the solenoid coil and a second swit... | 02/01/2011 |
| 7804674 | Position recognition in an electromagnetic actuator without sensors An electromagnetic actuator and a method for controlling the actuator comprising at least one armature (3) and two coils (1, 2). The voltage gradient at the two coils (1, 2) is measured during a sudden increase in voltage. From this measured dat... | 09/28/2010 |
| 7738232 | Alignment apparatus In driving a movable body in a target direction, a force in another direction, which may act on the movable body, is reduced. A system includes a current amplifier, which drives X1 and X2 electromagnets (a first actuator) for aligning the movable body in the X direc... | 06/15/2010 |
| 7589948 | Method for actuating an electromagnetic valve A method for is provided actuating at least one electromagnetic valve containing at least one coil, which can be excited by an excitation current, and an armature, in which the excitation current can be set such that, in response to a signal for actuating the armatu... | 09/15/2009 |
| 7558043 | Amperage control for valves An amperage control for an electrically operated valve having a coil. A process control apparatus generates a plurality of electrical operating data signals, each signal corresponding to an operating parameter of the valve. A valve control apparatus transmits voltag... | 07/07/2009 |
| 7542262 | Apparatus for driving an electromagnetic load The present invention refers to an apparatus for driving an electromagnetic load. The apparatus comprises a power stage comprising at least one first and one second transistor half-bridge and the electromagnetic load is arranged between the first and the second half... | 06/02/2009 |
| 7471496 | Solenoid driving apparatus A solenoid driving apparatus that drives a solenoid by intermittently supplying an exciting current comprises a first current switching element turned ON and OFF so as to switchably allow and block passage of the exciting current supplied to the solenoid L, a loop c... | 12/30/2008 |
| 7423857 | Current detecting circuit and actuator driving apparatus By switching the NMOS (11) on and off, a drive current passes through a solenoid (15). The drive current passes through a conversion circuit (16), and an amplifier circuit (17) outputs a current detection result by amplifying the output v... | 09/09/2008 |
| 7405917 | Method and apparatus for monitoring and determining the functional status of an electromagnetic valve The present invention provides a method and apparatus for determining the functional status of an electromagnetic valve having a solenoid and plunger including determining the electro-mechanical switching time of a valve based on characteristics of an electrical cha... | 07/29/2008 |
| 7403366 | Control circuit for an electromagnetic drive A control circuit for an electromagnetic drive includes first and second electronic switching elements, which in conjunction with a timing element subject the drive coil to a corresponding direct current in the starting phase or in the maintenance phase. A starting ... | 07/22/2008 |
| 7401595 | Fuel injection device for internal combustion engine A fuel injection device for an internal combustion engine including: an injector that injects fuel to be supplied to the internal combustion engine; a battery to which a DC converter that charges a capacitor of a capacitor discharge ignition circuit is connected as ... | 07/22/2008 |
| 7389968 | Proportional solenoid valve control device In a proportional solenoid valve control device, a mode selecting switch has an auto-mode position for sending a control signal from a level converting section to a driving signal amplifying section, a valve fully-closing manual position for supplying a valve fully-... | 06/24/2008 |
| 7359175 | Relay drive circuit A potential of an end of the coil is inputted to a plate-OFF detecting portion which detects OFF-tendency in which a plate of a relay is about to get apart from a head of a core of the relay. When the OFF-tendency is detected, a coil current for supplying a coil of ... | 04/15/2008 |
| 7358937 | Display apparatus and display reading apparatus In a display apparatus having organic EL devices to display images in units of pixels, each pixel comprises a first transistor to drive the relevant device; a current supply circuit for supplying, in a first mode, a current of a magnitude based on the value of the p... | 04/15/2008 |
| 7349192 | Method of operating a device for controlling electric actuators with optimum actuation current distribution There is described a method of operating a device (1) controlling electric actuators (3), and having a pair of input terminals (4, 5) connected to an electric energy source (6, 10); a number of pairs of output terminals (7, 8), bet... | 03/25/2008 |
| 7348689 | Switching circuit and a method of operation thereof This invention relates to the operation of a switching circuit, such as a bridge circuit. The invention provides a method of generating pulsed first and second switching signals for switching first and second switches of a switching circuit further comprising an out... | 03/25/2008 |
| 7341052 | Power switching control device for electric systems A power switching control device for electric systems such as an ignition device for internal combustion engines has a control circuit IC and a switching IC. A temperature sensor is provided in the switching IC. The control circuit IC is joined to a grounding termin... | 03/11/2008 |
| 7342754 | Bypass circuit to prevent arcing in a switching device A device is provided for preventing arcing between contacts of a switching device as the contacts of the switching device are opened. The device includes a coil suppression circuit connected in parallel with the coil. The coil suppression circuit dissipates the ener... | 03/11/2008 |
| 7336470 | Solenoid drive apparatus and drive method A solenoid (30) has one end connected to the ground G and the other end connected to an N-MOS transistor (33) which applies current from a battery (31) to the solenoid (30). On the other hand, regenerative current generated when the N-MOS... | 02/26/2008 |
| 7332875 | Illumination apparatus, and an illumination head and power source device used therefore An illumination apparatus used by connecting an illumination head to a power source device, capable of supplying a rated current to individual light emitting devices of the illumination head by using a power source device of an identical rating irrespective of the s... | 02/19/2008 |
| 7325361 | Apparatus and method for providing a modular sliding door mechanism A modular drive assembly for a sliding door, comprising: a guide track having a hinge slidably received therein; a pair of pulleys disposed on either end of the guide track; a pair of cables each having an end that is secured to the hinge and the other end is secure... | 02/05/2008 |
| 7315440 | Circuit and method for driving a coil-armature device Methods and circuits for driving a coil-armature device are disclosed. The circuits are configured to drive the coil-armature device to a first energy level for a period of time sufficient to retract the armature to the center of the coil, and then, to drive the coi... | 01/01/2008 |
| 7307397 | Driving unit A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet disposed to be opposed to said permanent magnet, and a controller. The mov... | 12/11/2007 |
| 7301762 | Computer enclosure with static protection device A computer enclosure includes a front panel, a drive bracket attached to the enclosure for receiving a data storage device therein, and a static protection device attached to the drive bracket. The drive bracket includes a recess with a plurality of catch orifices d... | 11/27/2007 |
| 7295043 | Differential output circuit for improving bandwidth A differential output circuit includes first and second inputs, first and second outputs, a resistor element connected between the outputs, first and second N-channel MISFETs, and first and second P-channel MISFETs. The inputs respectively receive first and second c... | 11/13/2007 |
| 7289920 | Method and apparatus for capture of grid characteristics corresponding to fluctuation events The techniques described herein allow a wind turbine generator system to automatically capture voltage waveform data corresponding to a voltage disturbance event. Data corresponding to a period preceding the voltage disturbance event, during the event and a period o... | 10/30/2007 |
| 7289878 | Apparatus and method for modifying operation of an electric gun driver A method and apparatus for providing adjustment of current-related dispensing parameters in an electric dispensing gun. A control circuit receives user-selected inputs corresponding to dispensing parameters of the gun and converts those inputs into digital signals. ... | 10/30/2007 |
| 7268994 | Relay driving apparatus and method having relay contact turn-on holding function A relay driving apparatus has a control circuit, which supplies a first voltage to a relay coil in response to a relay driving signal to turn on a relay contact, and thereafter a second voltage lower than the first voltage to the relay coil to keep an ON state of th... | 09/11/2007 |
| 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 |
| 7258106 | Control system for internal combustion engine A control system for an internal combustion engine having fuel injection valves provided in a combustion chamber and an exhaust gas recirculation mechanism. Target maximum cylinder pressure change rates are set according to the operating condition of the engine. The... | 08/21/2007 |
| 7246600 | Control device for internal combustion engine An ECU executes a program including the steps of: calculating a base timing of injection (INJB); determining whether an engine knocks; if the engine knocks, increasing a correction value INJK(I) applied to correct a timing of injection; and calculating the base timi... | 07/24/2007 |
| 7248453 | Circuit and method for controlling current flow through a solenoid A solenoid control circuit that includes two switching networks that are selectively opened and closed in a current limit cycle to control the magnitude of the current flowing through the solenoid. The configuration of the switching networks is such that current flo... | 07/24/2007 |
| 7242567 | Actuator drive controller An actuator drive controller is equipped with a power source for supplying power to an actuator; a voltage detector for detecting a voltage of the power source; and a controller for controlling a current supplied to the actuator, based on the voltage detected. When ... | 07/10/2007 |
| 7235936 | Linear vibration motor A linear vibration motor comprises: a stator provided with one of a permanent magnet and an electromagnet including a winding; a vibrator provided with the other of the permanent magnet and the electromagnet and supported to be able to vibrate; a movement detection ... | 06/26/2007 |
