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Patent Searching and Data


Matches 651 - 700 out of 13,787

Document Document Title
WO/1991/003856A1
An electric motor, in particular a small-size electric motor for driving windscreen wipers in motor vehicles, comprises a pot-shaped motor housing a front face of which is closed by an end shield of a gear housing, a gear pot which accom...  
WO/1991/003866A1
Several commutator motor designs are proposed which are capable of providing smooth and rapid short-circuit braking together with good commutation. These designs call firstly for the armature to be connected in the motor operation phase ...  
WO/1991/003385A1
A motor-wheel for electromobiles, bicycles, invalid wheel-chairs, in which the electromagnets (14, 15) of the rotor (12) of a commutator electric motor are arranged along a circumference in a pair of groups offset in relation to each oth...  
WO/1991/003095A1
In order to produce a moisture-proof join, which is simple in design and easy to assemble, between the motor housing (1) and the bearing plate (5) with the electrical leads (6, 7) coming out through it, the invention calls for the leads ...  
WO/1991/000639A1
Described is a generator set for the supply of electrical power, preferably for motor vehicles. The frequency-governed internal-combustion engine (BKM) used is an air-cooled or liquid-cooled radial motor with a blower fan (38) rigidly co...  
WO/1990/010974A1
An actuator device for an electric window winder (101) comprising an electric motor (104) driving a recirculating ball worm screw unit for movement of a pre-compressed screw (112) for displacing the window, and comprising a specific elec...  
WO/1990/003061A1
This invention relates to a rotary machine. The main technical object of this invention is to take out to the outside using one electric motor two kinds of rotational force of difference directions of rotation. To attain this object, a s...  
WO/1990/002435A1
The shaft of a miniature electric motor is usually mounted in sinter bearing blocks (7). Axial fastening is effected by starting collars (9, 10) which co-operate with the axial surfaces of the sinter bearing blocks (7). Axial vibrations ...  
WO/1990/002063A1
A drive, in particular for windscreen wiper systems in motor vehicles, has a d.c. motor (10) which can rotate at at least two different speeds and which has a collector (11), a first and a second brush (12, 13) which rest essentially dia...  
WO/1989/012925A1
Servo-driven motors are fitted with a tacho generator in which the radially arranged magnetic-pole pairs of a rotor generate, in radially arranged, meander-shaped coil windings mounted on a circular plate, a voltage which is dependent on...  
WO/1989/012347A1
An electric motor with iron-cored disk armature consists of at least three armatures. The central disk (1) is made of dynamo sheet by reeling-up. The coils (2) consist of wires that are situated on the lateral surfaces or in slots of the...  
WO/1989/008942A1
A conventional three pole D.C. motor has a third brush (9) placed at an acute angle of 60 degrees to one of the normal brushes (6, 7) and positioned to contact the commutator plates (C1, C2, C3). A motor energizing circuit is normally of...  
WO/1989/008345A1
A cordless power-operated device, such as a saw (20), is powered by a low level D.C. voltage provided by battery pack cells to operate the saw in a cordless mode. The cells are housed in a container (32) which fits into a cavity (23) for...  
WO/1989/007247A1
Device for measuring temperatures and rotational speeds of rotating parts, in particular shafts of electric machines such as motors and generators. Marks (2) which change in function of the temperature are placed on a shaft (4). A fixed ...  
WO/1989/006454A1
A commutator motor comprises poles consisting of two or three pole pieces and a one-part or three-part field winding on a stator forming a magnetic return path and operable in either direction or in a direction which can be switched. The...  
WO/1989/002671A1
A permanent magnet rotary dynamo electric machine (10) such as a high speed three phase brushless motor has at least one stator (16) and at least one rotor (11) spaced apart from one another by a cylindrical gap (28) therebetween. A plur...  
WO/1989/002668A1
In an electric machine, magnets are arranged in circle or in line, with their magnetization directions at an angle with respect to each other, in such a way that a polygonal field is created inside the magnet arrangement and stray fields...  
WO/1989/002183A1
To reduce slot ripple in a so-called radial type synchronous motor, a rotor (32) is composed of a plurality of unit rotor elements (34a, 34b) divided in a longitudinal direction and juxtaposed with one another, and their angular position...  
WO/1989/001257A1
A unitary end bell (66) includes a body (90) and a bridging section (92) and is assembled with a laminated stator stack (74) in the formation of a stator subassembly (150). End bell (66) is formed with base surfaces (118) at one end ther...  
WO/1988/009077A1
The motor (10) has a motor housing (11) sealed against the environment and made of a material having good thermal conductivity, such as aluminium, which is provided with external screens made from an electrically non-conductive material....  
WO/1988/007782A1
A wind-powered magneto-electric generator of which magnetic rotors (36, 37) are on a common shaft (17) direct-driven from a wind-turbine (Figs, 8, 9 and 10) to generate in stators (18, 19) an electromotive force (EMF) which is controlled...  
WO/1988/006815A1
In a brush device, a storage portion (16) for storing and holding each brush (13) and each brush spring (14) for pressing the brush (13) towards a commutator (1) and an outlet opening (17) for a lead wire (18) of the brush are disposed o...  
WO/1988/004490A1
An armature used for an electric motor or the like for an engine starter, wherein a ring (11) made of an annular steel plate is fitted via an insulating paper (12) onto the outer periphery of commutator segments (2), to which armature co...  
WO/1988/001802A1
An electric motor comprises an armature with a collector rotatably mounted inside a housing, as well as a support plate (10), essentially perpendicular to the rotation axes of the armature in the housing, said plate consisting of an elec...  
WO/1987/007452A1
Stator in which the field-coil consists of a series-connected primary winding and secondary winding. Not only the series-connected primary winding (6), but also the series-connected secondary winding (7) can be produced by an automated p...  
WO/1987/003148A1
Electrical machine in particular for starting systems, in the casing (1) of which are arranged permanent magnets (4 to 9) with corresponding flow guide elements (10 to 15). The permanent magnets (4 to 9) and flow guide elements (10 to 15...  
WO/1987/002839A1
A d.c. generator for cranking devices of internal-combustion engines. The d.c. generator comprises a housing (1) in which pairs of poles (2; 3) carry a wave-winding (5). The pairs of poles (2; 3) are mutually offset in the direction of t...  
WO/1987/001247A1
In a d.c. motor, the stator may form the armature and has its windings (2a, 2a1, 2B, 2b1, 2c, 2c1) inserted in slots in its cylindrical surface and the rotor may comprise a permanent magnet or be provided with d.c. windings (4a, 4b). Swi...  
WO/1987/000361A1
A commutator machine, in particular a small-size direct current motor with at least one pair of permanent magnets (11) supported on a magnetic return-circuit section (10) and made from a uniform ferrite material or a composite material w...  
WO/1986/007505A1
The commutating machine excited by permanent magnets, particularly consisting of a small motor for motor vehicles, is provided with soft iron auxiliary poles (16) carried by the armature (13) of the stator in order to obtain a series mou...  
WO/1986/004467A1
A numerically-controlled electromechanical precision drive system in which a plurality of low-current servomotor units (1, 1') are arranged in a circle around the driven shaft (4) or push rod (20) of an intermediate gear-wheel (3) in suc...  
WO/1986/003898A1
In the disc rotor for an electric machine with axial air gap provided with an armature winding (10) comprised of insulated wire, the element sides (15, 16) and the outer element heads (17) are arranged in only two superposed winding laye...  
WO/1985/005232A1
A spirally wound electric motor yoke of generally polygonal cross-section has part-cylindrical surfaces (58) machined for receiving mating bosses (60) of an end member (59) to provide improved concentricity. The invention also provides i...  
WO/1985/002951A1
A reluctance motor with windings for one or more phases, and arranged - for each phase - around two or more poles (3, 4, 5, 6). The stator (1) surrounds a rotor (2) incorporating two or more rotor poles (11). The invention is characteriz...  
WO/1983/004348A1
An electromagnetic actuator of the type having a thin armature (22) positioned for movement in a thin magnetic gap is less affected by frictional drag if the armature (22) is sufficiently pliant to contact the means (14, 18) forming the ...  
WO/1983/000264A1
Field composite permanent magnet having a first section (412) which has the same basic composition but a higher residual magnetic flux density than a second section (411), and the second section (411) has a higher coercive force than the...  
WO/1982/002802A1
Small size electric machine which comprises permanent magnets (12) adjacent to the rotor (10). These magnets overhanging the rotor (10) in the axial direction on both sides, are two-component magnets the flux yield of which is improved a...  
WO/1982/002803A1
A brushless, preferably coreless, DC motor or generator characterized by a positive, unidirectional, nearly constant torque. The machine in a preferred form comprises a rotor disc (16, 18) mounted for rotation with a shaft (2) and a stat...  
WO/1982/002288A1
Electric machine (1) acting as a starting motor for an internal combustion engine. The machine comprises an envelope (2) enclosing six permanent magnets (3 to 8) for the energization field. The hoop-type permanent magnets (3 to 8) are lo...  
WO/1982/001967A1
A dynamoelectric machine of the type having a distributed armature winding (18) in a cylindrical rotor (16) wound to form axial and substantially radial winding portions and including permanent (22) and/or electromagnets (32) to form rad...  
WO/1982/001626A1
A coil unit of a coreless-type armature, and a method of manufacturing the coil unit. The coil unit includes an inner cylindrical coil (11) and an outer cylindrical coil (12), the cylindrical coils (11), (12) each comprising coil wires (...  
WO/1982/001104A1
Controllers for brush-type multiple windings electrical motor. There has been a lack of a reliably-operating, efficient controller for such brash-type machine. The invention provides for torque control of a multiple winding electrical mo...  
WO/1981/003090A1
An armature winding distribution for an electric motor divides each armature coil (W1) into first (W1a) and second (W2b) coil sub-sections inter-distributed with one another so that the first and second coil sub-sections of an armature c...  
WO/1980/002215A1
The stator of a permanent magnet generator is comprised of a system of double yoke magnet directed outwardly and without magnetic protection. On the outer part deprived of protection on the two parallel and contiguous faces of the double...  
WO/1980/002089A1
A technical problem with a four pole wave wound direct current motors is that excessive currents flow in single turn windings when such a motor is operated at relatively low speeds and/or relatively high voltages, and that plural turn wi...  
WO/1980/002087A1
Class of electrical machines for converting between electrical energy and mechanical energy and vice versa. Each machine has an integral number of repeatable sections and is comprised of a magnetic stator (1), a magnetic armature (28), m...  
WO/1980/002088A1
Disc-type motor characterized by increased efficiency. The motor has two parallel spaced stator members (30, 32) each having a flat circular shape and an even plurality of pre-segmented permanent-magnet poles (34) in a circular array the...  
WO/1980/001524A1
At least one armature (32, 34) is supported adjacent and in axial alignment with coaxial apertures (30, 31) in parallel magnetic pole plates (20, 22) of opposite polarity energized by a coil (24) extending therebetween. A plurality of eq...  
JP2019198205A
[Subject] While being able to prevent weight balance of an armature from getting worse even if it adopts a method type of double A flyer in order to easy-ize winding work of a coil, an electric motor which can reduce a current value whic...  
JPWO2018139246A1
Structure as for which distance between a magnet coil of each phase and a permanent magnet is made to regularity is provided. [Means for Solution] Each magnet coil is constituted as an air core coil of a concentration volume which has a ...  

Matches 651 - 700 out of 13,787