| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310154030 | Means for securing magnet | 23 |
| 20090001833 | MAGNETIC MOTOR - A magnetic motor includes a rotor and a stator, in which there are magnets and materials of high magnetic permeability. The stator magnets are arranged with surfaces facing the rotor magnets in a staggered arrangement. The motor may be used to boost torque, for example in bicycles. | 01-01-2009 |
| 20090001834 | Permanent magnet motor - There is disclosed herein a Permanent Magnet powered motor that can be used in many applications. Larger units can be used to power automobiles based on rotor design and strength of magnets while smaller units can provide rotating power similar to any electric motor application. Electric power is not required to operate this motor thus removing the need for electrical power except for resistance components such as lighting. | 01-01-2009 |
| 20100013336 | Anchoring System For A Stator Housing Assembly Having An Overmolding; Power Tool With Same - A permanent magnet electric motor has a stator and a rotor The stator has a stator housing with opposed axial ends and features skived in the stator housing to extend radially inwardly from an inner surface of the stator housing proximate to at least one of the axial ends of the stator housing. An overmolding of material is molded around the features. In an aspect, the overmolding of material is a magnetic composite material and is molded to form magnets. In an aspect, magnets are placed on the inner surface of the stator housing and the overmolding of material is a plastic that is over molded around the magnets and the features. In an aspect, the features hold the magnets in place during the molding of the overmolding around the magnets. In an aspect, the magnets have essentially the same inner radius and outer radius and the overmolding of material is thicker at edges of each magnet than at the center of each magnet. In an aspect, the magnets are flat magnets and the overmolding of material is thicker at edges of each magnet than at the center of each magnet. In an aspect a power tool has such a permanent magnet DC motor. In an aspect, a power tool has a housing with a permanent magnet electric motor in the housing, with an member coupled to the electric motor. The electric motor has a rotor and a stator but not an end plate. The stator has a stator housing having opposed axial ends and a plurality of magnets affixed to an inner surface of the stator housing and an overmolding of material molded around the magnets. The overmolding of material includes a pilot feature that mates with a pilot feature of a bearing support of the power tool. | 01-21-2010 |
| 20120187790 | ELECTRIC MOTOR WITH PERMANENT MAGNET EXCITATION - An electric motor with a permanent magnet excitation comprises permanent magnets retained in a pole housing and associated with the flux-conducting element, wherein at least one permanent magnet and a flux-conducting element are arranged so that they are in positively interlocking engagement. | 07-26-2012 |
| 20130300240 | STATOR OF AN ELECTRIC MOTOR AND PROCESS FOR PRODUCING IT - The stator is formed by a pack ( | 11-14-2013 |
| 20140327333 | BRUSHLESS ELECTROMAGNETIC MOTOR - A brushless electromagnetic motor, preferably for use in dental handpieces, has a rotor set, a stator set, a plug set, a magnet, a motor cover kit and a motor end cap. The magnet is fixedly fitted in an interior space between said plug and said rotor. After connection of said rotor and said plug, said stator which grasps said rotor was covered by the motor cover kit, linking said motor end cap. By virtue of 360 degrees of magnetic attraction between said magnet and said rotor, said rotor can be maintained in the same horizontal rotation during operation, in case of vibration due to the centrifugal force caused by the rotation of the rotor, therefore enhancing the mass balance of said rotor, improving eccentricity, consequently increasing the balance of motor, decreasing vibration of the dental handpieces and improving both life span of dental handpieces and bearings of the motor. | 11-06-2014 |
| 310154070 | Adhesive | 2 |
| 20120161565 | METHOD FOR ATTACHING A MAGNET ON OR IN A ROTOR OR STATOR - The invention relates to a method for adhesively bonding a magnet onto the surface or into a slot of a rotor or stator of an electric motor or a generator, wherein i) the surface or surfaces to be glued of the magnet, rotor or stator are pre-coated with an adhesive that is not liquid at 22° C. and that does not cure without an activation step, iii) the magnet is brought into contact with the rotor or stator at the adhesive location, and iv) the adhesive is activated by heating or by high-energy radiation so that it cures, characterized in that the adhesive comprises a) at least one reactive epoxide prepolymer, b) at least one latent hardener for epoxies, and c) one or more elastomers. The adhesive preferably comprises a blowing agent. The invention further relates to a corresponding pre-coated magnet. | 06-28-2012 |
| 20120248914 | SPINDLE MOTOR - There is provided a spindle motor including: a sleeve rotatably supporting a shaft; a sleeve holder supporting the sleeve and formed through a pressing process; a stator core fixedly mounted on an outer circumferential surface of the sleeve holder; and a pulling magnet fixedly mounted on an upper surface of the stator core, wherein the stator core includes a burr insertion stepped part formed in a lower portion of an inner diameter portion thereof. | 10-04-2012 |
| 310154080 | Mounted to magnet yoke | 2 |
| 20110037334 | FASTENING STRUCTURE FOR MOTOR MAGNETS - A fastening structure for motor magnets primarily includes: a casing formed with a pair of magnet-positioning means, which are opposite to each other on the casing; a rotor installed in the casing; two magnets providing magnetic force to the rotor and each being installed in the corresponding magnet-positioning means, and a fixing sleeve mounted around the casing for providing an external fixing force to the magnets. Thereby, the disclosed structure helps to eliminate problems related to complicated fabrication required by the prior art. | 02-17-2011 |
| 20130334921 | MOTOR STRUCTURE - A motor structure includes a case, a rotor, a first magnet, a second magnet and at least one magnetic conductive plate, wherein the rotor is disposed within an accommodating slot of the case, and the first magnet is disposed between the case and the rotor. The first magnet comprises a first end portion spaced apart with the case to define a first separation space. The second magnet comprises a second end portion spaced apart with the case to define a second separation space. A spacing slot is composed of the first separation space and the second separation space, and the at least one magnetic conductive plate is disposed within the spacing slot. The magnetic conduction through the at least one magnetic conductive plate enables to lower the reluctance of the motor structure for prevention of magnetic flux leakage therefore increasing the air-gap flux density. | 12-19-2013 |
| 310154110 | Embedded in core or pole | 4 |
| 20090243415 | Pole Tooth With Permanent Magnet - Electrical machines with pole teeth which can be equipped with permanent magnets are intended to be capable of being produced more easily. For this purpose the invention provides for a cutout to be provided for each pole tooth, in which cutout magnet powder can be compressed. In a corresponding method for producing a pole tooth of an electrical machine, a cutout of the pole tooth is filled with magnet powder, after which the magnet powder is compressed in the cutout. | 10-01-2009 |
| 20100060096 | ELECTRIC MOTOR - An electric motor comprises a stator and a rotor received in the stator. The stator comprises a shell. The shape of a cross section of the shell perpendicular to the rotor axis is a polygon. The shell comprises a plurality of side walls and arcuate connection portions connecting neighboring side walls. The stator comprises 2n magnets disposed in the arcuate connection portions. The magnets form 2m magnetic poles, where m, n are unequal positive integers. Optionally, m is equal to half or twice n. The permanent magnets of the motor are located in the inner angle of polygon shell. Thus the diameter of rotor can be the greater, and the power density of motor can be increased in the same volume. | 03-11-2010 |
| 20130270950 | POLE SHOE ARRANGEMENT FOR A MACHINE ELEMENT OF AN ELECTRICAL MACHINE - A pole shoe arrangement for a rotor or a stator of an electrical machine having an air gap between the stator and the rotor is disclosed. The pole shoe arrangement has a pole shoe element having an inner end and an outer end opposing the inner end. The inner end lies opposite the air gap when the pole shoe element is in an assembled state. The pole shoe element has a receiving surface for receiving a permanent magnet between the inner end and the outer end. The pole shoe arrangement has a guiding facility to guide the permanent magnet in a radial direction from the outer end to the inner end and to limit a movement of the permanent magnet at right angles to the radial direction. | 10-17-2013 |
| 20130270951 | POLE SHOE ARRANGEMENT FOR A MACHINE ELEMENT OF AN ELECTRICAL MACHINE - A pole shoe element for an electrical machine is described. The electrical machine has a stator, a rotor and an air gap between the stator and the rotor. The pole shoe element contains a magnet receiving section which extends in a longitudinal direction of the pole shoe element, in which the pole shoe element in a peripheral direction of the rotor has a first width in a first radial inner position and in the peripheral direction has a second width in a second radial outer position. The second width is smaller than the first width. | 10-17-2013 |
| 310154120 | Cylindrical sleeve holder | 3 |
| 20110084564 | PERMANENT-MAGENT MOTOR - A permanent-magnet motor composed of an irony barrel, a magnet set, a magnet holder, and a rotor. The irony barrel includes a thin body. The magnet set includes a plurality of magnets. The magnet holder is received inside the irony holder and includes a plurality of retaining pieces located at an internal edge thereof for holding the magnet set. The rotor includes a rotor silicon steel sheet, a deflector, a rotary shaft, a front bearing, and a rear bearing, being inserted inside the magnet set. In light of this, the magnet set can not only maintain the same thickness as that of the conventional irony barrel but also reduce the thickness of the front and rear parts of the irony barrel, so that the production cost of the irony material can be effectively decreased. Besides, the magnet holder can definitely space and position the magnets to enhance the assembly efficiency. | 04-14-2011 |
| 20130113319 | OUTER BODY OF AN ELECTROMECHANICAL ENERGY CONVERTER - In an electromechanical energy converter having an outer body and an inner body, which are mounted movably relative to one another about an axis of rotation, an outer body according to the invention surrounds an annular structural element, a permanent magnet and a support ring which is received concentrically in the structural element. The support ring comprises a recess to receive the permanent magnet, and the recess has a boundary surface which extends parallel as to a radius of the axis of rotation. | 05-09-2013 |
| 20150054371 | SECURING STRUCTURE FOR MOTOR MAGNETS - A securing structure for motor magnets includes a casing, a rotor, two magnets, a rear cover and a ring sleeve. Therein, the casing has two magnet seats bilaterally disposed on the outer wall, wherein the two magnets are fittingly combined therein and thus providing electrical force to the rotor, while the rotor is disposed inside the casing. The rear cover and a brush fixing seat coaxially sleeve on one end of the casing. The ring sleeve mounts around the casing to offer an external restraining force to the magnets. | 02-26-2015 |
| 310154130 | Holder with pocket for magnet | 2 |
| 20130093277 | ROTATING ELECTRICAL MACHINE - The rotating electrical machine of the present invention includes: a magnet holder made of a non-magnetic material, which is formed by coupling a columnar portion for retaining the permanent magnet in a circumferential direction, and an annular portion for covering each axial side surface of the permanent magnet. The magnet holder includes, on an outer diameter side of both circumferential side surfaces of the columnar portion, engaging portions which engage with respective locking portions of the magnet cover, and includes, on an inner diameter side of each of both the circumferential side surfaces of the columnar portion, an extending portion extending along an inner peripheral surface of the magnet cover with a clearance (D) with respect to the inner peripheral surface of the magnet cover. | 04-18-2013 |
| 20150069873 | ELECTRIC MOTOR - A stator includes a housing made of magnetically conductive material, a plurality of magnets fixed to the stator housing; and a magnet holder attached to one end of the housing for fixing the magnets to the stator housing. The magnet holder includes a body and a plurality of locking structures extending from the body. Each magnet is locked between two adjacent locking structures. A plurality of cut-outs is formed in the stator housing, and a plurality of projections is formed on the body of the magnet holder and engaged with the cut-outs. Each locking structure includes a wedge-shaped inner end inwardly abutting against respective magnets to prevent the magnets from moving inwardly. | 03-12-2015 |
| 310154140 | Spring clip | 4 |
| 20090302701 | Sealed rolled pole housing for an electric motor - A rolled pole housing for an electric motor includes a sealed enclosure formed by a frame body, a flange and an end cap. Therefore, the rolled pole housing may be used in both sealed and unsealed applications. | 12-10-2009 |
| 20130221787 | SPRING ELEMENT FOR MECHANICALLY FIXING MAGNETS IN A ROTOR - The invention relates to a rotor or stator for an electric machine, in particular a spoke rotor which is arranged concentrically about a rotational axis and comprises a permanent magnet which is arranged in a recess of the rotor or stator. A spring strand for fixing the permanent magnet in the recess is provided in the rotor or stator, said spring strand comprising a holding ring and fixing means which are arranged on the holding ring. Said holding ring is arranged concentric about the rotational axis, and the fixing means extend in the axial direction of the rotor or stator into the recess. The holding ring is annular and the fixing means lie at least partially directly on the permanent magnets. The invention also relates to an electric machine comprising the claimed rotor. The invention further relates to a hand-held machine comprising a motor having a rotor or stator of the above-mentioned type. | 08-29-2013 |
| 310154150 | Clip secured to housing | 2 |
| 20100127590 | ROTATING ELECTRICAL MACHINE, IN PARTICULAR FOR THE STARTER OF AN AUTOMOTIVE VEHICLE - A DC electric rotating machine mainly for the starter of an automotive vehicle, including: a stator having a magnetised structure with permanent magnetisation and extending along the circumference of the stator; a rotor; a set of brushes adapted for the electric supply of the rotor by switching the electrical current in sections of the rotor; wherein the magnetised structure ( | 05-27-2010 |
| 20160049834 | MAGNET-RETAINING SPRING, ELECTRIC MACHINE CONTAINING SUCH A MAGNET-RETAINING SPRING, AND METHOD FOR PRODUCING THE ELECTRIC MACHINE - The invention relates to a magnet-retaining spring ( | 02-18-2016 |
