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WO/2004/013803A2 |
A reliable and cost-efficient direct drive force feedback motor is suitable for joystick applications, allowing multiple degrees of output freedom, requiring no coil commutation, and permitting compact packaging. A multiple degree-of-fre...
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WO/2004/008611A1 |
The motor unit (10) of an exposure system comprises a motor (45) for rotary-driving a drive shaft (23), and a motor (33) for rotary-driving a drive shaft (21). Stators (45b, 33b) of respective motors are coupled with the cancel stator (5...
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WO/2003/077404A1 |
The invention relates to a torque motor (1) provided with an annular rotor (15) and an annular stator (2), which comprises a stator frame with iron cores and electrical windings arranged thereon. According to the invention, the iron core...
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WO/2003/060932A1 |
The group of inventions relates to magnetic systems, in particular to a method for controlling the flux of electromagnet and to the structural design of an electromagnet which is used for carrying out said method. The inventive structure...
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WO/2002/095516A2 |
As rotational mechanical devices accelerate or decelerate, they generate torque against their housing and/or their surroundings. This torque represents wasted energy that is lost to the system. The invention comprises the use of equal an...
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WO2001056139A9 |
An actuation device is provided with an electric motor comprising a housing (102) supporting at least three rows of stator permanent magnets (104) making up two air gaps (122). The rotors, made of printed circuit boards, are located in t...
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WO2001056006A9 |
An actuation device is provided which includes a support frame (12), a linkage mechanism (16), a user interface component, an actuator, and a braking device (20, 26). The braking device (20, 26) has a braking device body (34, 58) and a b...
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WO2001056005A9 |
An actuation device comprising a support frame (12), first, second, third, and fourth linkages (16A, 16B, 16C, 16D), a user interface component, and a first rotation actuator. Each linkage has first and second spaced apart portions to al...
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WO/2002/055349A1 |
The invention includes an arrangement related to seatbelts (1) adapted to a vehicle, having at all events two securing points (2a, 2b), intended for the belt, which points are related to a chassis (3a) belonging to the vehicle, at all ev...
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WO/2002/047241A1 |
The invention relates to a magnetically driven rotatable device comprising a first device for producing a magnetic field for increased decoupling of a rotating or pivoting movement with respect to conventional systems. A first rotatable ...
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WO/2002/043227A1 |
An electromagnetic actuator applied to a shutter device for camera, comprising a rotatable disk-shaped rotor (10) magnetized in polarities different from each other and having an output part (10b), a first yoke (40) having a first magnet...
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WO/2002/039067A1 |
A subtractor subtracts the immediately previous desired angle held in a register from the current desired angle held in a desired angle register so as to generate the length (amount) and direction of the change from the immediately previ...
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WO/2002/033803A2 |
In torque motors known from the art a non-constant air gap is produced between the rotor and the stator that consist of sheet stacks by complex constructions on the stator. The torque motor (30) according to the invention has an unsymmet...
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WO/2002/025086A1 |
A drive device with non-circular gear, comprising a non-circular drive gear (11) having a torque motor (10) as a drive source and a gear train transmitting the rotation of the torque motor from the motor shaft (1) of the torque motor to ...
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WO/2001/099260A1 |
The invention concerns a motorised electromagnetic movement (1) for displacing and accurate angular positioning comprising a rotor-type mobile element and a stator-type fixed element, the rotor comprising a pin (3) mounted rotatable on i...
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WO/2001/089067A1 |
An electromagnetic actuator for driving the shutter of a camera, comprising a rotor (10) magnetized to the north and south poles and first magnetic pole parts (21, 31) and second magnetic pole parts (22, 32) disposed on the outer periphe...
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WO/2001/063627A1 |
The invention relates to a magnetically controllable switching valve (3; 20) comprising at least one permanent magnet (4; 24) in said valve and an electromagnet (6; 10, 11; 23). Said switching valve (3; 20) is located in the magnetic fie...
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WO/2001/052279A1 |
A high precision torque motor, including a partial rotation drive suitable for use in a galvanometer scanner, where the rotor (2) is supported within the stator (1) and housing assembly on all ceramic ball bearings (5, 6), including inne...
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WO/2001/051883A1 |
A low cost Hall position sensor comprises a standard surface mount Hall effect sensing device (2) having its three leads (4, 6, 8) soldered directly to an exposed electro-conductive end portion of a standard flexible multiconductor circu...
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WO/2001/041288A1 |
A novel low cost limited angle torque DC brushless servomotor is disclosed. The motor itself is a modified standard low cost DC brush motor which is modified by removing the brush assembly and substituting in its place an appropriately c...
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WO/2001/033280A2 |
A galvanometer unit comprises a limited-rotation motor with a load element such as a mirror attached to a shaft extending from the motor. In a servo loop that controls the angular position of the mirror, a position-sensor attached to the...
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WO/2000/064795A1 |
The invention relates to an actuator (A) for a component (2), comprising at least one defined stop position, in particular to a brake component actuator of a thread brake (B), for the selective braking of a running thread (Y) which has a...
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WO/2000/044084A2 |
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 which carry at least one winding (906a, 906b; 90...
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WO/2000/044083A1 |
The invention relates to an electromotive device for rotating a shaft. According to the invention, at least a permanent magnet (10) is fixedly linked with a rotatably mounted shaft (8) via a pivot arm (4) or integrated into a rotor disk ...
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WO/1999/057796A1 |
A low speed moving magnet motor (1) has a moving magnet (10) and a stationary coil (20) for carrying an electric current and disposed in relation to the moving magnet (10) such that a magnetic field generated when a current flows through...
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WO/1999/045627A1 |
An electromagnetic actuator having a movable rotor and at least one magnetomotive force source assembled together therein through a magnetic path, wherein magnets (5-1, 5-2) magnetized in opposite polarity to each other are installed on ...
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WO/1999/014842A1 |
A new class of actuators and mechanisms use opposing repulsive magnetic forces. The repulsive forces are typically generated between a stationary magnet (101' and 101'') and a moving magnet (110' and 110''), where the moving magnet is co...
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WO/1999/014516A1 |
The invention relates to an electromechanically operated disk brake for automobiles comprised of a floating brake caliper (1) and an actuating unit arranged on the brake caliper (1). The actuating unit (2) contains an electric motor (6) ...
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WO/1999/013557A1 |
The invention relates to an electromotive adjustable drive with a moving part (1; 26; 46) and a stationary part (2; 25; 45). Said stationary part contains at least one provided first energizing component (5; 29; 51) for generating a magn...
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WO/1998/022956A1 |
An electrical actuator (11) comprising a first actuator body (13) and a second actuator body (17) which is pivotable relative to the first actuator body (13) about an axis of rotation (19). One of the actuator bodies (17) is provided wit...
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WO/1997/028597A1 |
The invention concerns an electromotive device for rotating a shaft (8). The device comprises a mounting (2), on which the shaft (8) is rotatably mounted, and two magnets (10, 26) of which at least one is an electromagnet (26). A magnet,...
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WO/1996/038904A1 |
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 ...
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WO/1996/037040A1 |
A switched reluctance motor includes an auxiliary winding interspersed among the main phase windings such that a constant inductance ratio is established between the main and auxiliary windings regardless of rotor position. The auxiliary...
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WO/1996/034448A1 |
A rotary actuator (10) includes a pole riser (24) 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 actuato...
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WO/1996/011484A2 |
The invention relates to an actuator comprising a permanent magnet body (1) and coil means for cooperation with the magnet body. The magnet body is rotatable about an axis of rotation (7) between, for example two, stop positions. The coi...
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WO/1996/003301A1 |
The invention concerns an electromechanical disc brake for motor vehicles which comprises a floating caliper and an actuating unit disposed on the caliper. The actuating unit comprises an electric motor which, by connecting in a reducing...
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WO/1995/034903A1 |
The invention relates to a device for actuating a control member, particularly a throttle valve in a gas conduit (3), such as for example an intake of an internal-combustion engine, which va lve is pivotable from an idling position into ...
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WO/1995/020780A1 |
A method of manufacturing a direct drive servovalve including the steps of providing a completely packaged drive motor and a hydraulic stage positioning the drive motor upon the hydraulic stage and in engagement with a valve contained wi...
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WO/1995/012177A1 |
A high speed non-contact beam scanning device (20) sized and shaped to provide the ergonomic benefits of a pen or wand (1). The device is well suited for reading one or two dimensional bar-code (9, 10) or other printed matter. In order t...
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WO/1994/029945A1 |
Electromagnetic actuator with rotary core, of the type comprising, housed into a casing: a magnetic yoke, a pair of fixed adjacent coils alternately energized, and a rotating element with magnetic core; the yoke, the coils and the core h...
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WO/1994/019914A1 |
Apparatus (21) is described for reproducing low frequency sound in response to an applied electrical signal having a rotary acoustic radiator (22) comprised of a chamber (26) having a rotor assembly (58) including a shaft (61) and movabl...
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WO/1994/007299A2 |
A torque motor (8) comprises an armature (30) placed radially between a central bar (31) and an external ferromagnetic tubular portion (32). The central bar (31) comprises two portions of the same cylinder (33A, 33B) diametrically opposi...
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WO/1993/008539A1 |
A compact beam scanning information readout device and method for reading bar code or other information requires little or no orientation of the information to be scanned by virtue of its raster or omni directional scan capabilities. Onl...
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WO/1992/010873A1 |
An actuating system for a primary flight control surface including unique electric drive motors having an integral detent mode. The motors include a unique laminated stator core and means for changing the continuity of the magnetic circu...
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WO/1992/009133A2 |
A miniature device for moving a reference plane or point on an axis in rotational or x-y directions, particularly useful for two dimensional beam scanning. The device consists of a ferromagnetic ring surrounding a magnetic core which is ...
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WO/1991/006108A1 |
The invention relates to a monophase electromagnetic actuator comprising a stator structure and a movable member having a thin magnetized part. The thin magnetized part presents two polar portions (1, 2) separated by a separation line (3...
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WO/1991/000641A1 |
A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite side...
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WO/1989/006063A1 |
An electric motor comprises a stator element (5) made of magnetic material, a moving element (2) made of magnetic material and carrying at least one permanent magnet (13A, 13B) and adapted to run along sections of the stator element whil...
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WO/1987/006051A1 |
A two-axis force motor (10) has an armature (12) mounted within a body (11) for omni-directional pivotal movement relative to the body. The motor has an electrical section for causing the armature to pivot selectively in either or both o...
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WO/1982/002619A1 |
An electric motor, for instance of limited angle type for driving a servo-actuator, has two or more motor units each including a wound stator within each of which is a respective rotor carrying spaced permanent magnets, the rotors being ...
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