Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 51 - 100 out of 393

Document Document Title
WO/2004/017499A1
A limited rotation torque motor is disclosed that includes a rotor and a stator. The rotor includes a plurality of pairs of magnetic poles (32, 34, 36, 38) and the stator includes a plurality of pairs of stator coils (42, 44, 46, 48). Ea...  
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...  
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...  
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...  
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...  
WO2002033803A3
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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 ...  
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...  
WO2001033280A3
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...  
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...  
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...  
WO/2001/056006A1
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...  
WO/2001/056005A1
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...  
WO/2001/056139A1
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...  
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...  
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...  
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...  
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...  
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...  
WO2000044084A3
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...  
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...  
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 ...  
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...  
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 ...  
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...  
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) ...  
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...  
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...  
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,...  
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 ...  
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...  
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...  
WO1996011484A3  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
WO1994007299A3  

Matches 51 - 100 out of 393