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WO/2006/025170A1 |
A magnet rotor in which rotation prevention and positional displacement (rattling, and misalignment of axes) between a magnet and a rotor body can be restricted, a movable magnet type-instrument with the magnet rotor, and a stepping moto...
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WO/2006/019123A1 |
[PROBLEMS] To provide a stepping motor improved in torque characteristics by appropriating the position relation and shape of the pole teeth thereof to increase angular accuracy. [MEANS FOR SOLVING PROBLEMS] In this stepping motor, a sta...
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WO/2006/016578A1 |
A stepping motor reduced in size of the outline of a housing in consideration of heat radiation and enabling the installation of a mounting plate in a saved space. A mold case (13) and the mounting plate (14) are mounted by a locked part...
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WO/2005/124978A1 |
A small-sized stepping motor in which its rotary shaft or an output shaft disposed on the output side of its rotary shaft is improved for the purpose of achieving size reduction and motor characteristics improvement. That is, a stepping ...
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WO/2005/119887A2 |
In a preferred embodiment, an apparatus, including: first and second lamination stacks (82, 84); a permanent magnet (90) disposed between the lamination stacks; and the first and second lamination stacks and the permanent magnet being co...
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WO2005083879B1 |
A motor comprising a combination of a plurality of sets of coils and permanent magnets, wherein the sets of coils are supplied with exciting signals from a drive circuit so as to be excited to opposite poles alternately, the permanent ma...
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WO/2005/086323A1 |
A three-phase transverse flux motor (20) has three stator assemblies (38-40) with hollow annular soft magnetic bases (36) containing ac coils (43). The rotor comprises four soft magnetic bases (68, 50-52, 69) and a plurality of interdigi...
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WO/2005/083870A1 |
A motor, comprising a rotor having a rotor magnet fixed to the outer peripheral surface of a rotor body, wherein a supporting shaft part is formed of a material with self-lubricity and the first sliding surface (33c) of the supporting sh...
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WO/2005/078899A1 |
A compact dynamoelectric machine having a rotor with a length which is less than the length of a corresponding stator core. The rotor is rotatable on a shaft supported by bearings, with at least one of the bearings being positioned longi...
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WO/2005/069466A1 |
Two large and small tubular yokes (7, 8) are coaxially superposed on one another. They are coupled by means of an annular yoke (9) at one end, and the other end is open. A solenoid coil (13) is disposed on the coupled end side. Permanent...
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WO/2005/057761A1 |
A stepping motor includes a bracket, a housing having a first end coupled to the bracket and a second end having a reduced width compared with the first end, a stator disposed in the housing to form electric field, a first supporting uni...
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WO/2005/055402A1 |
A stepping motor in which the performance is enhanced by preventing a variation in the axial urging force of a rotary shaft caused by generation of heat from the stator coil of the motor. The stepping motor comprises a rotary shaft havin...
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WO/2005/033792A1 |
A shutter apparatus of camera are disclosed. The shutter apparatus of camera installed at a mobile phone includes coils to which the external supplied power is provided, a magnet disposed within the field of magnet, and a rotor for rotat...
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WO/2005/026834A1 |
A sector drive mechanism includes: a rotor (2) having four magnetic poles; a C-shaped stator (3) having a first magnetic pole (11) excited by a first coil (4), a second magnetic pole (12) excited by a second coil (5), and a third magneti...
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WO/2005/022728A1 |
An actuator unit is constituted of a movable body (30’), a movable mechanism (8) for moving the movable body (30’), a flat stepping motor (50) as the drive source of the movable mechanism (8), and a supporting body (10) for fixing th...
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WO/2005/022729A1 |
An electromagnetic actuator (1) including a rotor (2) and a stator (3) on which coils (4, 5) are wound, the coils being arranged so as to face portions of the outer periphery of the rotor (2). The stator is substantially letter C-shaped,...
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WO/2005/022730A1 |
Rotating torque is increased in an electromagnetic actuator, such as a stepping motor, having a stator and a rotor. An electromagnetic actuator has a rotor (30) with a large number of magnetic poles (Nr1, Nr2, Nr3, Nr4, Nr5, Sr1, Sr2, Sr...
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WO/2005/022727A1 |
A stepper motor, comprising a pair of yokes (10) and (10’) disposed so that comb-toothed pole teeth (11) and (11’) are opposed to each other, a rotor (12) having a multipolar-magnetized permanent magnet installed so as to be opposed ...
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WO/2005/015714A1 |
[PROBLEMS] An electromagnetic actuator that is downsized and whose strength is enhanced. [MEANS FOR SOLVING PROBLEMS] A first arm section (13) and a second arm section (14) that connect magnetic pole portions of a stator (3) are extended...
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WO/2005/002029A1 |
A step motor is disclosed which comprises a rotor having four magnetic poles, a first magnetic pole which is excited by a first coil, a second magnetic pole which is excited by a second coil, and a third magnetic pole which is excited by...
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WO/2005/002030A1 |
A step motor is disclosed which comprises a rotor having four magnetic poles, a first magnetic pole which is excited by a first coil, a second magnetic pole which is excited by a second coil, and a third magnetic pole which is excited by...
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WO/2005/002028A1 |
A stepping motor and a method of producing the motor, where the number of parts and assembly man-hour can be reduced. A stepping motor (1) has a bobbin (22) that integrally holds a yoke (2) and a connector housing (26) that is disposed a...
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WO/2004/054068A2 |
The present invention discloses a rotor for a line-start reluctance motor which improves core area efficiency to make flux flow in one direction. The rotor for the line-start reluctance motor includes a core (21) having an axis coupling ...
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WO/2004/017489A1 |
An excitation voltage waveform is allowed to approach a sine-waveform when a rotor is rotated to change over the magnetic pole of a magnet facing each tooth. Provided are a plurality of magnetic pole units (45a and 45b) arranged in an al...
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WO/2004/001935A1 |
A two-phase step motor with bifilar winding around the stator poles is connected to phases a and B (90&dot apart) of a two-phase driver in a manner that maximizes torque at medium speed operation and minimizes vibrations. In particular, ...
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WO/2003/069766A1 |
A flat stepping motor assembled in electronic equipment such as small and low-profile printers, facsimiles, and floppy disk drives, comprising a stator assembly formed of a pair of stator units (A, B) and a rotor (50) rotatably disposed ...
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WO/2003/056689A1 |
The present invention is provided to simplify a fabrication process of a stepping motor. The stepping motor of the invention comprises a bobbin having a coil wound thereon, at least two protrusions in one side of the bobbin, a housing fo...
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WO/2003/049261A1 |
A stepping motor, characterized in that a soft magnetic intermediate magnetic body magnetically independent of stator yokes on both sides is disposed between two adjacent stator yokes at a specified position where the magnetic body is cl...
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WO/2003/028193A1 |
The invention concerns a polyphase motor comprising M phases, M being equal to 2 or 3, the motor consisting of a stator part (1) excited by electric coils and by a magnetized rotor (2). The invention is characterized in that the rotor (2...
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WO/2003/028192A1 |
A brush-less motor includes a rotor with a magnet alternately magnetized N pole and S pole in a rotating direction, and a core with plural salient poles on which coils are wound. The core faces the magnet to form a magnetic circuit. Each...
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WO/2003/005530A2 |
An integrated position resolver for hybrid synchronous electric motors. The present invention represents new improved integrated position resolver for hybrid synchronous electric motors which uses the magnetic flux of the motor also for ...
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WO/2002/093720A1 |
A universal motor/generator/alternator apparatus comprises: At least one moveable body (e.g., a rotor or shuttle) (11) having multiple surfaces (14a-d), when viewed in cross-section, comprising a plurality of magnets or coils (13) on eac...
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WO/2002/078153A1 |
The invention relates to an electromagnetic machine (10) having a permanent-magnet rotor assembly (54, 56); a stator assembly (58, 64, 60, 100) disposed coaxially with the rotor assembly, wherein the rotor define an interior spaced volum...
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WO/2002/067407A1 |
The present invention relates to a self-bearing step motor, and more particularly, to self-bearing step motor system and a control method thereof, wherein a rotor can be supported by magnetic force without adding an additional winding fo...
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WO/2002/049187A2 |
The invention relates to a unipolar transverse flux machine that comprises, for the purpose of modularity, at least one rotor module (15), two coaxial ferromagnetic rotor rings (16, 17) that are toothed across their outer periphery at a ...
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WO/2002/013357A1 |
A stepping motor (10), comprising a rotor (3) formed of a permanent magnet (2) having multiple poles magnetized in circumferential direction and two or more stator yokes (5a, 5b) disposed on the outer periphery of the rotor (3) and formi...
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WO/2001/091270A2 |
An electric motor comprising: a case, a rotor assembly, the rotor assembly residing inside the case, the rotor supported by the case for both rotary and linear motion. Means for linearly translating said rotary assembly with respect to t...
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WO/2001/070552A1 |
The invention relates to an electromechanical wheel brake device (10), with an electric motor (18), whereby a friction brake lining (14) may be pressed against a brake body (16) (brake disc), by means of a reduction gear (34) (planet gea...
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WO/2001/056140A2 |
An electric motor comprising a shaft (300) on which is mounted n motor modules (where n is an integer). Each motor module consists of two generally disc-shaped rotors (302) having a coil (304) sandwiched between them. Each rotor/coil mod...
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WO/2001/052388A1 |
A hybrid synchronous motor comprising a rotor and stators, wherein the stator has at least one assembly (7) having a structure in which ferromagnetic rings (2, 3) formed with teeth on the both inner peripheral edges and outer peripheral ...
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WO/2001/037410A1 |
The invention concerns an air conditioning valve for a motor vehicle operating on an electric step motor with permanent magnet capable of delivering mechanical power at least equal to 50 mW, and a reduction unit for decreasing the amplit...
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WO/2001/027431A1 |
An actuation assembly (10), particularly for double-glazing units (11) with a perimetric frame (12) which supports two glass panes (13) which form, between them, a sealed air space (14) which accommodates light blocking means (15) which ...
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WO/2001/018940A2 |
A magnetic power unit comprising rotor and stator ferromagnetic cores (1,2) which having a surface in shape of a cogwheel has a cog (1a, 2a) and an indent (1b, 2b) beside it; the magnets (3) which are fixed as in shape of the “N” pol...
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WO/2001/016655A1 |
A generator (120) in an electronic-controlled mechanical timepiece, wherein a core winding unit (133b) for a coil (134) disposed on the outer periphery side of a main plate (2) is made shorter than a core winding unit (123b) for an inner...
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WO/2001/008283A1 |
A magnetoelectric machine comprising a rotor made in two disks (102/103), the teeth (105/106) of which on the outer or inner circumference make up rotor poles and an axially magnetized cylindrical magnet (104) placed between the disks. I...
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WO/2001/005019A1 |
The invention concerns an electromagnetic device, namely a linear or rotary single-phase or polyphase motor or generator, comprising at least two sets of teeth made of soft magnetic material and with relative phase displacement, one set ...
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WO/2001/001558A1 |
The invention concerns a method for setting an electric motor, which consists, during a non-powering sequence of at least one of the motor (1) phases, in measuring on a predetermined time window (15), the induced voltage (Ti) in the non-...
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WO/2000/072429A1 |
The invention concerns a step motor with two magnetic induction coils (9, 10) and a rotor (1) consisting of a permanent magnet with n poles, the magnetic yoke consisting of two parallel planar plates (2, 3) linked by two spacers (7, 8) a...
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WO/2000/069046A1 |
A brushless synchronous electrical machine comprises a rotor (60) rotating about an axis, a stator (50) that includes at least one set of magnetically active stator cores (52a-52f) projecting radially outward from the axis, and also incl...
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WO/2000/060728A1 |
The present invention pertains to the field of electrotechnical engineering and essentially relates to motors in which the rotor rotates under the action of a packet of external electromagnetic cartridges and windings of the core. It is ...
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