Class 310/156.13 - Keyed to a sleeve/hub

Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter including a key and keyway between the magnet
No. of patents: 37
Last issue date: 06/15/2010

Number	Title	Issue Date
7737601	System and method for securing a rotor to a motor drive shaft using cam fasteners A rotor assembly for mounting a rotor to a motor shaft having a rotor with a centrally positioned central bore, the diameter of which is slightly larger than a diameter of the motor shaft, a first stepped bore intersecting the central bore and being aligned along a ...	06/15/2010
7545067	Permanent magnet rotor for a brushless electrical machine A permanent magnet rotor for a brushless electrical machine has a rotor shaft and a cylindrical plastic cage. Permanent magnets are inserted in this plastic cage. The plastic cage has dovetailed retainers. The permanent magnets are trapezoidal in shape and are inser...	06/09/2009
7372181	Rotor for brushless motor and brushless motor A rotor for a brushless motor which can securely prevent an idle running and a scattering of a magnet while restricting a manufacturing cost as low as possible. The rotor is provided with a sintered ring magnet in which not-ground recess portions are formed in an ax...	05/13/2008
7347963	Method of molding resin to protect a resolver winding At least a winding of a stator stack 2 is molded by injecting a fused resin molding material into a space formed between a top mold and a bottom mold member. When the stator stack 2 of the resolver, which is annular and includes a coiled winding 7	03/25/2008
7348704	Rotor of motor and manufacturing method thereof A rotor of a motor includes a cylindrical magnet having at least one first coupling portion at an inner circumferential surface of the cylindrical magnet; and a rotor core coupled with the cylindrical magnet, the rotor core having at least one second coupling portio...	03/25/2008
7193345	Collecting and distributing ring for rotary electric machine stator A collection-distribution ring comprises three busbars, each having a circular ring shape, which are integrally connected together with prescribed distances therebetween by an insulating resin. Coil connection terminals project inwardly in a radial direction and are...	03/20/2007
7088024	Field assembly for a motor and method of making same A stator of an electric motor is formed by inserting pre-formed magnets on a cylinder having anchors and plastic is molded around the magnets and anchors to secure the magnets to a surface of the cylinder, forming a cylinder/magnet assembly. A pilot feature is forme...	08/08/2006
7084540	Magnet motor and method of assembly A magnet motor with rotor assembly is provided that has a plurality of magnet members that circumscribe a wall of the rotor core or stator in an orientation that minimizes or eliminates gaps therebetween. The magnet members can have non-parallel opposing sides to al...	08/01/2006
7075203	Electric motor and method for producing a rotor for such an electric motor The invention relates to a brushless electric motor comprising a stator, which has pole elements, and a rotor, which is mounted rotatably in relation to the stator and comprises magnet poles of magnetic powder material bonded to form a body and a back yoke body carr...	07/11/2006
7049723	DC motor The disclosure describes a DC motor including a rotor unit arranged within the motor body and has a cylindrical field magnet fixed to an outer surface of a holder. The holder has a rotating shaft press-fitted through the center, and the cylindrical field magnet has ...	05/23/2006
7002276	Armature with coated laminate bundle An armature of the prior art has a lamination packet which leads to a high loss of magnetic flux in the lamination, since it completely encloses the magnets that are disposed in the lamination. An armature (1) of the invention comprises at least one la...	02/21/2006
6998748	Motor rotor and manufacturing method thereof A motor rotor includes a magnetic yoke and a rubber magnet located within the magnetic yoke. At least one pattern is formed on a surface of the rubber magnet, which faces the magnetic yoke. The manufacturing method of the motor rotor is to provide a rubber magnet ha...	02/14/2006
6965186	Electric motor for hybrid vehicles An electric motor for a hybrid vehicle includes a rotor disposed and coupled between an internal combustion engine and a transmission, the rotor being coupled, at one end thereof in a direction of a rotation axis, to a crank shaft of the internal combustion engine a...	11/15/2005
6936945	Permanent magnet synchronous motor A structure of a rotor used in a synchronous motor employing both of permanent magnets and a stator using concentrated windings is disclosed. Slits (13) provided in a section of a rotor laminated in a direction of a rotary shaft are shaped like an arc or a bo...	08/30/2005
6894412	Electric motor An electric motor includes: a stator having a plurality of first coils with a rotor receiving part formed inside thereof and generating a rotating magnetic field and a plurality of second coils making a pair with the first coils and generating an induction magnetic ...	05/17/2005
6891295	Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w...	05/10/2005
6844645	Permanent magnet motor rotor having magnetic permeable material for enhanced flux distribution A permanent magnet motor has rotor structure that includes magnetically permeable backing material attached to magnets for enhancing flux density distribution. A plurality of permanent magnets are circumferentially distributed about an axis of rotation, adjacent mag...	01/18/2005
6737781	Rotor yoke having a ring-like inductor forming member for an electric machine rotor A rotor for an electric rotary machine having signal generating inductor magnetic poles provided on a periphery thereof comprising a cup-like rotor yoke having a peripheral wall and a bottom wall and an inductor forming member mounted on the peripheral wall of the c...	05/18/2004
6492756	Rotary electric motor having magnetically isolated stator and rotor groups A rotary direct current electric motor in which rotor and stator members are each configured as annular rings, concentric with respect to each other, about an axis of rotation. Either of the rotor or stator members is formed of groups of electromagnet pol...	12/10/2002
6034455	Rotor for an electric motor The invention relates to a rotor (1) for an electric motor showing a hub (2) which is connected to a magnet (2). In order to avoid deformations of the inside thread (4) located in the hub (3), the hub (3) is spaced from the surrounding magnet (2) and is p...	03/07/2000
5986374	Vehicle mounted motor with rotor having ferrite magnet section with embedded permanent magnet pieces therein A motor mounted in a vehicle having ferrite magnet section formed as a rotor core. The ferrite magnet section has a plurality of recesses, or through holes, circumferentially provided along an axial direction in a space-apart relation. A plurality of perm...	11/16/1999
5945758	Rotor for an electric motor The invention relates to a rotor (1) for an electric motor showing a hub (2) which is connected to a magnet (2). In order to avoid deformations of the inside thread (4) located in the hub (3), the hub (3) is spaced from the surrounding magnet (2) and is p...	08/31/1999
5939809	Rotor with permanent magnets for an electric motor A rotor with permanent magnets for an electric motor, comprising a plurality of magnets (2, 20) disposed around the circumferential surface of a rotor core (1, 10) and equally spaced from each other, an external cover (40), affixing the magnets against th...	08/17/1999
5818138	Permanent magnet electric machine with hard-magnetic and soft-magnetic segments In known permanent magnet electric machines with a radial air gap, intersecting phase conductors are deflected only into the space arranged axially in front of the slotted soft magnetic body. By separating the body (13) which is equipped with permanent ma...	10/06/1998
5783880	Motor for driving information medium In a thin type flexible disk drive motor, in order to improve undesirable jittering of rotation, an inertia ring of larger diameter than that of the rotor frame is fixed immediately under the rotor. The inertia ring consists of a short cylinder part of th...	07/21/1998
5704111	Method for making a rotor for an electric motor A method for making a rotor for an electric motor. An elastomeric ring loosely slides over a motor shaft and inside a flux ring. End plates are attached to the longitudinal ends of the flux ring so as to longitudinally compress the elastomeric ring which ...	01/06/1998
5500994	Method of manufacturing a rotor A miniature electric motor has a stator mounted within a casing and a rotor provided so as to face the stator. The rotor includes a rotary shaft rotatably supported to the casing, a rotor body into which the rotary shaft is inserted, the rotor body being ...	03/26/1996
5345130	Modable permanent magnet rotor for optimized field shaping A permanent magnet rotor is shaped to optimize the flux distribution thereabout. In one embodiment, cut-outs in the rotor core between magnetic poles forces more of the magnetizing flux, i.e., that which would normally be distributed about the transition ...	09/06/1994
4940936	Antifriction bearing with a clip-on sensor cooperating with a shaft mounted magnetic encoder retainer ring An antifriction bearing assembly has rolling elements and a magnetic encoder ring housed in an outer ring with two portions which can have different diameters. A sensor is removably attached to the outer ring in alignment with the encoder ring. Various se...	07/10/1990
4791328	Multi-piece rotor for dynamoelectric machine A multi-piece rotor for a dynamoelectric machine includes a core which is bore mounted to a shaft, and one or more annular sleeves which are slip fit and glued onto the shaft, the annular sleeves being characterized by a plurality of longitudinally extend...	12/13/1988
4757603	Method of making a reinforced rotor assembly A rotor assembly particularly suited for use in oscillating electric motors includes magnet assemblies mounted on stiffening rings. The stiffening rings and magnet assemblies are bonded together by an intermediately disposed matrix. Each stiffening ring i...	07/19/1988
4748359	Permanent magnet rotor with sinusoidal flux pattern A permanent magnet rotor wherein a rotary shaft has an orthogonal cross a sectional shape orthogonal in a longitudinal direction of the rotary shaft, a plurality of circular-arc portions which are around the axis of rotation of the rotary shaft, and recti...	05/31/1988
4683393	Reinforced rotor assembly and method of making same A rotor assembly particularly suited for use in oscillating electric motors includes magnet assemblies mounted on stiffening rings. The stiffening rings and magnet assemblies are bonded together by an intermediately disposed matrix. Each stiffening ring i...	07/28/1987
4641422	Method of making a permanent magnet rotor for a synchronous motor A hub of a permanent magnet rotor includes an elongated one-piece body portion with a bore running therethrough, a circular disc carried by the body portion between ends thereof, and a ring surrounding the body portion and bonded to the circular disc....	02/10/1987
4594525	Rotatable assembly for a dynamoelectric machine A rotatable assembly for a dynamoelectric machine has a pair of sets of opposite tabs formed on a flux ring at least adjacent a pair of opposite end portions thereof, respectively, and a set of magnet material elements is disposed in assembly positions ge...	06/10/1986
4477744	Permanent magnet rotor with gaps between the magnet and the hub A rotor for a synchronous motor includes a permanent ring magnet which has an inner surface, and a hub which has an outer surface. The hub is provided with a rotor shaft. Each surface is formed with a plurality of teeth. The teeth formed on one surface ar...	10/16/1984
4060745	Structure for attaching a permanent magnet to a rotating shaft In order to minimize stresses on a circular rotatable permanent magnet attached to a shaft in a dynamoelectric machine, the shaft of the machine is provided with a circular support portion having an outer supporting surface and a shoulder at one end where...	11/29/1977

PatentStorm

Bizarre Patents

PatentStorm News

Class 310/156.13 - Keyed to a sleeve/hub