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| Number | Title | Issue Date |
| 7772947 | Variable reluctance fast positioning system and methods A system is provided for positioning an article. In this regard, one embodiment of the system, among others, can be broadly summarized as follows. The system contains a frame and a series of actuators connected to the frame, where the series of actuators contains at... | 08/10/2010 |
| 7408433 | Electromagnetically actuated bistable magnetic latching pin lock A pin lock is movably mounted for linear movement along a longitudinal axis. A magnet, preferably a permanent magnet, is mounted for limited rotation between the pin extended and pin retracted positions. An electromagnet provides a controllable electromagnetic field... | 08/05/2008 |
| 7301426 | Electromagnetic actuator Electromagnetic actuator for operating at least one movable contact of a switch into a switched-on position or a switched-off position. The electromagnetic actuator (1) has a first magnetic circuit for making a movable (3) and a fixed (4) pole b... | 11/27/2007 |
| 7280019 | Single coil solenoid having a permanent magnet with bi-directional assist A single coil solenoid includes a permanent magnet with bidirectional assist capabilities. The solenoid includes an armature that during de-energization of a single coil of wire is attracted to the permanent magnet thereby maintaining a hold position and during ener... | 10/09/2007 |
| 7115881 | Positioning and motion control by electrons, ions, and neutrals in electric fields This invention deals with novel method and apparatus for positioning and motion control by rapid-response motorless linear motion, angular deflection, and continuous rotational motion utilizing the force due to electrons, ions, and/or neutrals. Thus forces and torqu... | 10/03/2006 |
| 6967550 | Electromagnetic regulating device An electromagnetic regulating device with a movable actuator (42), especially a piston, having an engagement region (44) on an end thereof, and a coil device (34, 36), which is stationary relative to the actuator and which is designed to exert a... | 11/22/2005 |
| 6919786 | Actuator with magnetic circuit having two iron parts An actuator (1) has two parts in the iron circuit and has a simple construction. A short-circuit element (3) has an offset (90), which depending on the position of an armature (9) varies the course (60) of magnetic flux in such a w... | 07/19/2005 |
| 6916017 | Vibration damper device The invention relates to a damper device for damping vibration, the device comprising an energy converter device mounted on a baseplate for fixing to a structure, the energy converter device presenting a moving portion suspended by at least one spring. The moving po... | 07/12/2005 |
| 6827331 | Electromagnetic actuator The invention is based on an electromagnetic actuator, especially for activating a valve, having at least one electromagnet (10) that acts on a correspondingly designed armature surface (20) of a moveable armature (22) in a first effective range... | 12/07/2004 |
| 6719267 | Magnet valve and fluid control apparatus using the same A leaf spring for urging a spool toward a flange part of a yoke is provided between a guide fixed to a housing and the spool. Owing to the urging force of the leaf spring, the spool is pressed against the flange part of the yoke, and the yoke can be pressed against ... | 04/13/2004 |
| 6554800 | Compact pump motor system and dispensing process A drive motor for an infusion pump system includes a novel outer housing which includes a unitary member which defines a cavity adapted to receive a winding wherein the housing cavity has a length at least as long as length of the winding. In one embodime... | 04/29/2003 |
| 6455955 | Electro-sensitive working medium and method of using the medium The even system electricity induction operation medium of this invention has 3 halogen atoms, especially fluorine atom into a/the molecule at least it is the even system electricity induction operation medium including one kind of liquid state organic com... | 09/24/2002 |
| 6419011 | Annular shaped interrupted solenoid activator and pump for borehole subsea use (BEI-0002) An interrupted annular solenoid activator for use in well or subsea tools is provided. An interrupted annular armature member of a ferromagnetic material has a wire coil wound about it. A separate curved annular segment of the generally toroidally shaped ... | 07/16/2002 |
| 6037851 | Electromagnetic actuator On a known electromagnetic actuator for valve control of an internal combustion engine an armature (1) is moved by magnetic force between the pole faces (21, 31) of an opening magnet (2) and a closing magnet (3) to activate an intake/exhaust valve (5). Ow... | 03/14/2000 |
| 5939963 | Electromagnetic actuator An electromagnetic actuator assembly is described which comprises a stator housing having a slot extending across the diameter thereof. A stator core is located within the slot, the core carrying a coil. The core is conveniently shaped to permit the use o... | 08/17/1999 |
| 5877569 | Drive device with an electric motor and a relay switching the motor current A drive device with an electric motor with permanent magnets and a pole top more particularly for use with servo drives in motor vehicles. A relay is provided for switching the motor current with at least one electromagnet, which contains a relay coil and... | 03/02/1999 |
| 5831504 | Actuator assembly A magnetic actuator design and method of use is provided that generally reduces problems associated with conventional actuators and can be specifically employed to increase the accuracy of actuator type precision operations, such as surface mounted electr... | 11/03/1998 |
| 5809157 | Electromagnetic linear drive An electromagnetic linear drive has a stationary unit, a mobile unit centered and coaxially placed with respect to the stationary unit and an enclosing assembly made of diamagnetic material to support and protect the stationary unit and the mobile unit. T... | 09/15/1998 |
| 5734310 | Magnetic latching solenoid assembly A magnetic latching solenoid assembly comprises a bobbin having a central aperture formed therethrough along a central axis and having a solenoid coil wrapped therearound, and a metal polepiece secured at least partially within the bobbin. An at least par... | 03/31/1998 |
| 5729187 | Transmission shift interlock A holding device and a transmission shift interlock mechanism employing the holding device. The holding device is intended to immobilize a cable and includes a generally cylindrical electromagnet with a central passageway extending therethrough and a hold... | 03/17/1998 |
| 5705969 | Actuator An actuator for converting electrical energy into rotary or reciprocating motion comprising a casing filled with an electro-sensitive fluid, the casing having a plurality of electrodes affixed along its inner periphery and including a rotary member which ... | 01/06/1998 |
| 5691680 | Method of recognizing the impingement of a reciprocating armature in an electromagnetic actuator A method of recognizing armature impingement in an electromagnetic actuator having an electromagnet including a solenoid, an armature movable toward and away from the electromagnet and return means for exerting a force on the armature. The method includes... | 11/25/1997 |
| 5689225 | Method for driving magneto-resistive element A method for driving a magneto-resistive effect element in which a bias magnetic field is applied by a bias conductor fed with a bias current to a magneto-resistive effect element whose resistivity is changed with an impressed magnetic field, wherein the ... | 11/18/1997 |
| 5682127 | Method of switching an electromagnetic actuator A method of switching an electromagnetic actuator which includes an armature movable along a path of travel and two electromagnets having respective solenoids, disposed at opposite ends of the path of travel for alternatingly attracting the armature. The ... | 10/28/1997 |
| 5677658 | Electrically operated control module for a locking mechanism An electrical operated control module for a locking mechanism in which is located a locking mechanism and an electrically operated actuator member. The electrically operated actuator member has a magnetic force associated therewith and is actuated by a me... | 10/14/1997 |
| 5644279 | Actuator assembly A magnetic actuator design and method of use is provided that generally reduces problems associated with conventional actuators and can be specifically employed to increase the accuracy of actuator type precision operations, such as surface mounted electr... | 07/01/1997 |
| 5561486 | Assembly for use in electromagnetic actuator An assembly which can be used as a rotor in an electromagnetic actuator for a camera shutter. The assembly generally includes at least two pieces of magnetic material each having a north and south pole, a drive arm, means for magnetically holding the magn... | 10/01/1996 |
| 5408852 | System of magnets for a selection block in textile machines Apparatus for operating needles of a textile machine includes magnetically operated control flaps for operating the needles, and magnetic controls operable to actuate the control flaps. The control flaps include a flap structure and an armature disposed o... | 04/25/1995 |
| 5028900 | Damper for a rotary solenoid To reduce noise, impact forces and bouncing, the shaft of a rotary solenoid is provided with a dampening mechanism which generally includes a resilient dampening element and a cooperating collar which are axially disposed about the rotating shaft of the s... | 07/02/1991 |
| 5014030 | Electromagnetically activated mechanisms An electromagnetically activated mechanism has mechanical input and output members, at least one of which cooperates with the armature of an electromagnet which is energisable to prevent or limit movement of that member. The electromagnet and its armature... | 05/07/1991 |
| 4959629 | High torque rotary solenoid A high torque rotary solenoid is disclosed employing attracting and repelling forces of permanent magnets to induce rotary motion is disclosed. Four arrays of magnets are located on a stator and rotor and are arranged along the axis of rotation of a shaft... | 09/25/1990 |
| 4767955 | Linear actuator motor A motor includes a pair of linear actuators having a rack connected to their actuation elements. The linear actuators are powered in a manner which causes them to oscillate. A pair of sector gears which mesh with the rack are rotatably mounted on individu... | 08/30/1988 |
| 4660010 | Rotary latching solenoid A rotary latching solenoid of the type in which a permanent magnet causes a flux flow path to be formed between opposing pole faces of an armature and a base in order to hold the armature in an energized or latched position is improved by providing the po... | 04/21/1987 |
| 4658232 | Electromagnetic device An electromagnetic device for use in, for example, the diaphragm control of a camera. The electromagnetic device includes an electromagnet, an armature, an armature shaft and a restricting member for inclining the armature with respect to the armature sha... | 04/14/1987 |
| 4550302 | Solenoid A solenoid including a plunger supported on a shaft so as to be axially and rotatably moveable, a rotator rotatably supported on the shaft, a coil for generating magnetic flux to attract the plunger to the rotator by a magnetic force, and yokes for comple... | 10/29/1985 |
| 4470030 | Trip solenoid Trip solenoids are disclosed in which a permanent magnet is positioned exteriorly of the armature case. In one version, a rotary solenoid has a permanent magnet between a ball race plate and the case and has a magnetic force sufficient to hold the rotary ... | 09/04/1984 |
| 4157521 | Rotary solenoid A rotary solenoid has a substantially constant clearance air gap, adapted to proportional operation, includes a generally cup-shaped case of ferromagnetic material, an energizing coil is received in the case adjacent, an annular stator member is received ... | 06/05/1979 |
| 4081774 | Actuating device An actuating device is disclosed which is modular in construction. The device employs a modular head having a rotatable output shaft for controlling valves, etc. One or more force motors are arranged to actuate the output shaft according to the required a... | 03/28/1978 |
| 4022069 | Rotary actuator mechanism Rotary actuator mechanism in which relative axial movement of two magnetizable members is converted into relative rotative movement. Each magnetizable member has a plurality of inclined engagement surfaces, the inclined engagement surfaces of one magnetiz... | 05/10/1977 |
| 3940642 | Stepping motor The invention relates to a stepping motor having at least one electromagnet disposed in a casing, a shaft which is mounted for rotation in the casing and on which is rotationally fixed a rotor which in turn is rotationally fastened to an armature mounted ... | 02/24/1976 |
