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| Number | Title | Issue Date |
| 7852183 | Power drive unit electromagnetic latch A no-back device for a power drive unit is configured such that, during operation of the power drive unit, the no-back device does not supply magnetic or frictional force against power drive unit rotation. The no-back device is implemented either redundantly or no-r... | 12/14/2010 |
| 7453341 | System and method for utilizing magnetic energy The present invention is a system and method for utilizing magnetic energy. The basic principles of the present invention may be implemented in a variety of systems and methods. A magnet may be rotated or an electromagnet may be controlled in order to control a magn... | 11/18/2008 |
| RE40503 | Hybrid rotary actuator A rotary actuator (16) includes a rotor (48) which is disposed in a housing (34) between first and second pole pieces (42 and 44) of a stator (40). The rotor (48) is rotatable relative to the stator (48) betwee... | 09/16/2008 |
| 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 |
| 7279815 | Swing motor A swing motor having an opening formed asymmetrically inside a stator. The swing motor is formed with an asymmetrical opening, in particular in a semicircular shape inside the stator. The opening is provided with a plurality of salient poles wound with coils. Electr... | 10/09/2007 |
| 7265513 | Variable reluctance electric power system A variable reluctance electric power system which comprises an alternator and a motor having a rotor with longitudinal lobes and no windings, commutators, slip rings, magnets, or laminations. The alternator and the motor have stators which have conventional windings... | 09/04/2007 |
| 7262535 | Rotor shaft for limited rotation motors and method of manufacture thereof A limited rotation motor system that includes a rotor is disclosed wherein the rotor includes a sleeve with a first open end and an a second end having an integral closed end element, and a permanent magnet that is received through the first open end of the sleeve. ... | 08/28/2007 |
| 7210500 | Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve A servovalve assembly includes a motor having a flapper shaft. A flapper couples to a first end of the flapper shaft such that the flapper shaft orients the flapper between a first nozzle and a second nozzle of the servovalve assembly. An adjustment assembly adjusts... | 05/01/2007 |
| 7187296 | Miniature fault indicator A rugged, miniature, waterproof and lightweight magnetic latching indicator with an auxiliary switch. The indicator includes a solenoid, an elongated plunger mounted in the solenoid, the plunger supporting a first permanent magnet with the magnet being surrounded by... | 03/06/2007 |
| 7121506 | Remotely controlled model airplane having deflectable centrally biased control surface A remotely controlled model airplane includes a receiver responsive to signals from a transmitter to control the direction of flight of the model airplane. The receiver, powered by a battery, demodulates the signal transmitted by the transmitter to selectively energ... | 10/17/2006 |
| 7094125 | Steering device for toy and running toy A steering device for toy, which comprises a simple structure, and provides a stable running along a curved line. The steering device for toy, comprises: right and left turning members for turning right and left steering wheels in clockwise and counterclockwise dire... | 08/22/2006 |
| 7009321 | Compact two-axis wide gap torquer motor A novel design concept for a torquer motor is useful for stabilizing apparatuses in a vibrating structure. According to one aspect, a novel design for a coil pair is provided. A first coil in the pair is box shaped with a hollow interior portion and windings provide... | 03/07/2006 |
| 6993983 | Universal magnetostrictive force sensor A magnetostrictive force sensor universally usable in any environment with similar signals unaffected by the surrounding material. To this end, a sensor comprising a shaft of magnetostrictive material with an inductance coil wound around the shaft is provided with a... | 02/07/2006 |
| 6977455 | Permanent-magnet synchronous electric motor with improved statoric group for circulation pumps of heating and conditioning systems A permanent-magnet synchronous electric motor for circulation pumps of heating/conditioning systems of a uniquely simple construction and improved performance. The motor has a motor casing and a cross-like or star-like monolithic body inside the motor casing. The mo... | 12/20/2005 |
| 6975049 | Electrical machine and method of manufacturing the same An electrical machine including a rotor and a stator. The stator includes a core and a coil disposed on the core. In one construction, the core is generally U-shaped and comprises magnetic material. The electrical machine also includes a bridge comprising magnetic m... | 12/13/2005 |
| 6975053 | Rotator driving device, image forming apparatus using the rotator driving device, and method of driving rotator Rotational force of a driving motor is transferred to a photosensitive drum via a planetary-rolle reduction device, so that the photosensitive drum is rotated. A speed detector set on the shaft of the photosensitive drum detects the rotational speed of the photosens... | 12/13/2005 |
| 6971143 | Magnetic detent for rotatable knob A roller pump including a stator and a rotor assembly disposed within the stator. The rotor assembly includes a rotor hub, a first roller slide and a second roller slide slidingly disposed within the rotor hub. Each of the roller slides rotatably supports a roller. ... | 12/06/2005 |
| 6960848 | Electromagnetic drive device and light quantity adjustment device using the same An electromagnetic drive device includes a coil frame with a hollow tubular shape, a magnet rotor rotatably disposed in the coil frame through a rotational shaft, a transmission member for transmitting a rotation of the magnet rotor, and a coil wound around an outer... | 11/01/2005 |
| 6956453 | Bi-stable magnetic latch A magnetic bi-stable latch with an upper stator and a lower stator, a rotor between the upper stator and lower stator and adapted for rotation between a first latched position and a second latched position. Each of the stators is a magnetic assembly having at least ... | 10/18/2005 |
| 6956311 | Magnetic motor A magnetic motor includes rotors having permanent magnets and rotatably disposed around a rotating axis, a magnetic sensor disposed at a periphery of the rotors and a plurality of electro-magnetic coils, and control means which controls electric current to the coils... | 10/18/2005 |
| 6935476 | Clutch having a multiple pole electromagnetic actuator for transfer cases and the like A clutch having a multiple pole electromagnetic actuator is useful in motor vehicle powertrain components such as transaxles, transfer cases, transmissions, differentials and the like. The electromagnetic actuator includes a stationary coil, a rotating, multiple pol... | 08/30/2005 |
| 6933818 | Torque motors A torque motor may include a rotor having at least two magnets disposed thereon, and a stator having a core and at least one coil. The magnets are arranged and constructed so that the outer surfaces thereof alternately have a N pole and a S pole. The magnets cover t... | 08/23/2005 |
| 6926454 | Electromagnetic driving unit and light quantity regulating apparatus using the same An electromagnetic driving unit includes a rotor having a central shaft and formed of a permanent magnet with a hollow cylindrical shape; an inner yoke disposed on an inner circumferential side of the rotor; an outer yoke disposed on an outer circumferential side of... | 08/09/2005 |
| 6921999 | Electric motor An electromagnetic rotary actuator is driven by a single-phase voltage. Permanent magnets on a rotor interact over a part-cylindrical small airgap with a soft-iron stator having pole teeth that carry at least one winding for rotating the rotor within a limited angul... | 07/26/2005 |
| 6909209 | Low-profile stepping motor having coils wound rectangularly A stepping motor comprises a rotor assembly and a stator assembly. The stator assembly includes first and second stator units arranged horizontally on a same plane. Each stator unit is composed of: upper and lower stator yokes, which are shaped substantially semi-an... | 06/21/2005 |
| 6840223 | Armature and armature driving device This invention is an armature and an armature driving device in which the armature is rotated around its axis so as to inhibit uneven wear from occurring between the armature and a housing. That is, an armature which is slidably provided within a housing filled with... | 01/11/2005 |
| 6756873 | Hybrid rotary actuator A rotary actuator (16) includes a rotor (48) which is disposed in a housing (34) between first and second pole pieces (42 and 44) of a stator (40). The rotor (48) is rotatable relative to the stator (40) betwee... | 06/29/2004 |
| 6750748 | Limited angle unidirectional torque motor A torque motor comprising a rotor assembly and a stator assembly, the rotor assembly including a permanent rotor magnet being diametrically oriented, and the stator assembly including a pair of upper and lower stator poles spaced circumferentially around the rotor a... | 06/15/2004 |
| 6507257 | Permanent magnet brushless torque latching actuator A bi-directional latching actuator is comprised of an output shaft with one or more rotors fixedly mounted thereon. The shaft and rotor are mounted for rotation in a magnetically conductive housing having a cylindrical coil mounted therein and is closed b... | 01/14/2003 |
| 6472967 | Actuator using a magnetic circuit to produce a counterforce An actuator for rotating (or moving) a rotor (or a moving member) according to the current flowing through an electromagnetic coil. Magnetic energy of magnetomotive force induced in the electromagnetic coil when energized is stored in an air gap and a sub... | 10/29/2002 |
| 6336373 | Rotary electromagnetic actuator A drivig rotary shaft and a follower rotary shaft are rotatably carried in a housing of a rotary solenoid. Operating members fixed to the rotary shafts by clips are operatively connected to each other by gears, and a locked member is locked non-movably by... | 01/08/2002 |
| 6124774 | Electromagnetic control motor device, particularly a ratio meter The present invention relates to an electromagnetically controlled drive device, in particular a ratio meter, the device being of the type comprising: a set of control coils (10, 20); a frame (50) which carries the set of coils (10, 20); equipment includi... | 09/26/2000 |
| 6078236 | Rotary solenoid A rotary solenoid is disclosed which comprises a support member, a U-shaped core secured to the support member such that a limb of the core extends through an opening provided in the support member, a coil encircling part of the core, the coil being carri... | 06/20/2000 |
| 6020804 | Electromagnetic actuator magnetically locked into two or more stable positions An electromagnetic actuator has four positions which are stable in the absence of a current and moves rapidly between these positions when acted upon by a current. The actuator has a thin, rotatable magnet (3) with two pairs of magnetic poles transversall... | 02/01/2000 |
| 6006794 | Device to block weft yarn during cutting on a weft feeder Device to block weft yarn associated with a measuring weft feeder for fluid jet looms. The device is located downstream of the outlet yarn guide and/or of the antiballoon device of the feeder, and comprises a single elongated body which includes: an inlet... | 12/28/1999 |
| 5926664 | Core made of a soft magnetic material for use in an electromagnetic actuator An electromagnetic actuator includes a core made of a soft magnetic material, a permanent magnet located between a pair of ends of the core, the permanent magnet being supported for movement, and an electrically conductive coil wrapped about a portion of ... | 07/20/1999 |
| 5708406 | Rotary actuator An improved rotary actuator having a reduced height is disclosed. The actuator has a stator core having excitable poles and yokes, a rotor with a rotor magnet, a bobbin frame having a rotor container and bobbin portions with excitable coils. The rotor con... | 01/13/1998 |
| 5703555 | Rotary actuator A rotary actuator includes a pole riser that acts as a mechanical stop and provides advantageous magnetic latching features, which overcome the problems typically associated with the end of travel in conventional rotary actuators. The pole riser designed ... | 12/30/1997 |
| 5699031 | Electromagnetic actuator with rotary core Electromagnetic actuator with rotary core, comprising, housed in a casing: a magnetic yoke, a pair of fixed adjacent coils alternately energized, and a rotating element with a magnetic core; the yoke, the coils and the core having a common axis coinciding... | 12/16/1997 |
| 5682129 | Electrical actuator An electrical actuator comprises a first actuator body (1) and a second actuator body (3). The first actuator body comprises two diametrically opposed magnetic poles (N) and (S). The second actuator body is made of a soft-magnetic material and comprises t... | 10/28/1997 |
