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| Number | Title | Issue Date |
| 8000079 | Relay driving module and an electronic device incorporating the same A relay driving module is adapted for driving a latching relay, and includes a current limiting circuit, an energy storage component, and a switch circuit. The current limiting circuit is adapted for receiving a power signal, and draws an amount of current that does... | 08/16/2011 |
| 7369392 | Circuit for preventing simultaneous on operations Providing a circuit for preventing simultaneous ON operations at a relay drive apparatus, which can prevent the simultaneous ON operations securely, the circuit includes a first diode, a second diode, a first transistor connected through the first diode with a first... | 05/06/2008 |
| 7357359 | Electronic code follower relay An electronic code following relay for use in a railroad signaling system includes a timing circuit for receiving an input square wave signal coded at a pre-determined code rate, and regenerating the input square wave signal at the pre-determined code rate after a p... | 04/15/2008 |
| 7330344 | Method for driving actuators A method for driving a plurality of actuators having an output stage having multiple channels, by way of whose channels boost currents are conveyed to the actuators. In this method, a check is made as to whether rising edges of multiple boost currents are present si... | 02/12/2008 |
| 7182628 | Cable connector having interchangeable color bands Interchangeable identification bands are manually stretchable over coaxial cable TV connectors to identify the intended application of the connector and can be used alone or in combination with other color designations, such as, color designations for different cabl... | 02/27/2007 |
| 7104847 | Electric power system and method of operating the same A system for providing electric power and a method of controlling the same. The system includes a local power source, a non-neutral-bonded connector electrically connected to the local power source, a neutral-bonded connector, and a conductor. The system also includ... | 09/12/2006 |
| 6972535 | Controller for motor A controller is disclosed for a motor. The motor includes a first terminal and a second terminal. In a positive mode, the first terminal is connected with the positive electrode of a power supply, and the second terminal is connected with the negative electrode of t... | 12/06/2005 |
| 6917500 | Hybrid relay including solid-state output and having non-volatile state-retention and associated methods The hybrid relay may include a plurality of input and output terminals, and a voltage supply terminal. The hybrid relay may also include an electromagnetic coil connected to the input terminals and a latching mechanism that may include first and second contacts mova... | 07/12/2005 |
| 6882515 | Operation circuit and power switching device employing the operation circuit In an operation circuit of an electromagnetic switching device, when electric energy is discharged by discharge switches connected in series, respectively, to opening coils and closing coils, an induction current flowing in a direction opposite to a current of the c... | 04/19/2005 |
| 6559614 | Electrical circuit arrangement for controlling an electromotor in a motor vehicle An electrical circuit arrangement for controlling a unit, such as an adjustment system for windows or a sliding sunroof, that is driven by a motor and is situated in a motor vehicle. The arrangement guarantees that, in the case of a short-circuit of circu... | 05/06/2003 |
| 6459707 | Relay multiplexer system and method for prevention of shock hazard A relay multiplexing system which provides improved safety from hazardous voltage conditions. The relay multiplexing system comprises a relay multiplexer module and a terminal block which connects to the relay multiplexer module. The relay multiplexer mod... | 10/01/2002 |
| 6417636 | Power window device In a power window device, a DOWN switch has first and second switches in a power window circuit located in a door for a window of a passenger's seat. A normally-closed contact of the first switch and a remote UP terminal of the power window circuit to whi... | 07/09/2002 |
| 6347030 | Battery supply control unit A disclosed battery supply control unit comprises a large current relay in which an excitation current continuously flows when it is in its connecting state and a small current relay in which a limited excitation current flows only at the time of changeov... | 02/12/2002 |
| 6285151 | Method of compensation for flux control of an electromechanical actuator A method of controlling velocity of an armature of an electromagnetic actuator as the armature moves from a first position towards a second position is provided. The electromagnetic actuator includes a coil and a core at the second position. The coil gene... | 09/04/2001 |
| 6246564 | Activating device An actuating device for a motor used in a power window of an automobile which can drive the motor reliably to open the window even when the automobile is submerged in water. This device has a simple configuration is relatively small and inexpensive. This ... | 06/12/2001 |
| 6128175 | Apparatus and method for electronically reducing the impact of an armature in a fuel injector A method is provided to control velocity of an armature of a fuel injector as the armature moves from a first position towards a second position. The fuel injector includes a stator core at the second position and a coil is associated with the stator core... | 10/03/2000 |
| 6126141 | Irrigation system valve controller expansion apparatus An irrigation system valve controller which provides for alternating operation of two conductive output paths from a single energizing input source. The valve controller allows adding new valves to an existing automatic sprinkler system without having to ... | 10/03/2000 |
| 6078491 | Hybrid relay A hybrid relay with an electromagnetic relay system having at least one coil one core yoke unit, at least one armature which switches contacts and one power semiconductor whose switching path, in combination with the contacts switches the load circuit of ... | 06/20/2000 |
| 6075690 | Relay multiplexer system and method for improved debounce of relays A system and method for controlling relays. The method may comprise receiving one or more input commands for a plurality of relays, with the plurality of relays including a first relay, and a last relay, initiating actuation of the first relay after recei... | 06/13/2000 |
| 6024059 | Apparatus and method of controlling electromagnetic valve An electromagnetic valve has a first and a second electromagnetic coil and an armature. The first electromagnetic coil generates a magnetic filed to cause the armature to move a valve for closing. The second electromagnetic coil generates a magnetic filed... | 02/15/2000 |
| 5991143 | Method for controlling velocity of an armature of an electromagnetic actuator A method of controlling velocity of an armature of an electromagnetic actuator as the armature moves from a first position towards a second position is provided. The electromagnetic actuator includes a coil and a core at the second position. The coil gene... | 11/23/1999 |
| 5936828 | 110 volt to 200 volt adaptor A voltage adaptor outputs 208-220 volts at an outlet and receives two 110 volt inputs. The adaptor has first and second male input connectors that can mate with respective power connectors and a control circuit interconnecting the male connectors to the o... | 08/10/1999 |
| 5909352 | Alternator circuit for use in a liquid level control system An alternator circuit for alternately operating one of first and second electrical load devices which uses a magnetic latch relay to perform the alternation. The circuit includes a first circuit means for supplying electrical energy from a source to one o... | 06/01/1999 |
| 5889645 | Energy preservation and transfer mechanism An arrangement for driving actuator coils for two or more driven devices employs a microprocessor or similar controller and an actuator driver circuit. The actuator driver circuit controls two or more relay actuator coils from a single microprocessor outp... | 03/30/1999 |
| 5847908 | Machine having current loss shutdown circuit with low resistance relay A machine includes first and second electrically actuated components and a shutdown circuit electrically interconnected therewith. The shutdown circuit has a current sense relay element which is electrically connected to the first electrically actuated ma... | 12/08/1998 |
| 5835329 | Apparatus for agitation separation of magnetic particles This invention provides a method and apparatus for agitating magnetic particles, suspended in a solvent using an alternating magnetic field gradient. The apparatus has a housing chamber capable of holding one or more vials containing suspended paramagneti... | 11/10/1998 |
| 5811892 | Power supply system including mechanical output switches for use with a plurality of display tubes A low voltage power inverter utilizes reed switches to control a number of display tubes. The reed switches are controlled by magnetic coils or permanent magnets. The magnetic coils receive a control signal from a control circuit. The control circuit is p... | 09/22/1998 |
| 5621604 | PWM multiplexed solenoid driver This invention relates to driving solenoid and motor loads while providing the means for fast turn on and fast turn off. Many applications including automotive fuel injector drivers, Anti-Skid Braking (ABS) solenoid and motor drivers, and other electro-me... | 04/15/1997 |
| 5099385 | Protected reversing contractor using a multifunctional transmission systrem for controlling acknowledgement switches A protected reversing contactor is disclosed comprising two electromagnets intended to be alternately energized and whose armatures actuate two sets of respective phase switches and two acknowledgement switches mounted respectively in series in the supply... | 03/24/1992 |
| 5012967 | Electric tool for driving in fixing elements An electric tool for driving in fixing elements (10) into an object (4) by means of a magnetic field generated by supplying magnetizing current to an electromagnetic device, comprises a circuit means (17) which is adapted, when activated, to supply magnet... | 05/07/1991 |
| 4905120 | Driver circuit for solenoid operated fuel injectors A driver circuit for first and second coils includes first and second selector switches coupled in series between first terminals of the coils and a first common junction, first and second diodes coupled in series between second terminals of the first and... | 02/27/1990 |
| 4760491 | Fail-safe brake valve driver Fail-safe brake valve driver (10) is provided for controlling a dual coil (A,B) brake valve. A pair of identical circuits (12, 14) are each uniquely associated with one of the brake valve coils. By means of control of an operational amplifier (16) and dua... | 07/26/1988 |
| 4724505 | Relay combination A relay combination includes a first relay having a first double throw contact set including a first normally closed contact, a first normally open contact and a first armature for contacting the first normally open and closed contacts. A first armature c... | 02/09/1988 |
| 4718454 | Valve operating system The system is particularly suitable for controlling a solenoid valve SV1 having two stable operating positions in accordance with programmed `on` and `off` periods set at a 24 hour timer 10. The valve typically in one position connects a gas supply to a r... | 01/12/1988 |
| 4689714 | Electric control device adaptable to a two state switching device An electric control device adaptable to a two state switching device is provided comprising two electromagnets disposed head to tail and each having a coil inside which a coil is slidably mounted, and two rocking levers which each comprise a first arm hav... | 08/25/1987 |
| 4688138 | Electromagnet drive device A method and apparatus for driving an electromagnetic device includes two coils which selectively attract and repel a moving body. In order to allow a quick switching of the moving body between being attracted by one coil and the other, the current throug... | 08/18/1987 |
| 4652802 | Alternator circuit arrangement useful in liquid level control system Alternator circuit arrangement (20) for controlling the electrical energization of multiple load devices such as two pump motors (41,42) on an alternating basis so as to maintain the level of a liquid (86) in a container (84) within a predetermined range.... | 03/24/1987 |
| 4642477 | Automatic light signalling system An alarm actuated emergency light signalling circuit to replace the usual wall mounted light switch. The new switch circuit fits within the electrical wall box and has the external appearance and manual operation of an ordinary light switch. When triggere... | 02/10/1987 |
| 4576262 | Method and apparatus for operating a magnetic clutch The method and apparatus are used for operating a magnetic clutch system of the type which includes a magnetic clutch having a clutch magnetizing coil which can be actuated to couple a first rotatable element to a second rotatable element when voltage is ... | 03/18/1986 |
| 4550659 | Hammer driving circuit for a dot system line printer A line printer having a suitable number of hammers which are controlled by electromagnets and which are juxtaposed with equal pitch on a carriage to effect printing while simultaneously shifting the hammers, wherein adjacent hammers are not simultaneously... | 11/05/1985 |
