| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310156230 | With casting material around the magnet | 7 |
| 20090033167 | MAGNET SUPPORT AND RETENTION SYSTEM FOR HYBRID ROTORS - Disclosed is a rotor assembly for an electric machine includes a rotor core. The rotor core has at least one magnet slot with an increasing slot width as radial distance from a rotor shaft increases, and at least one slot lip extending at least partially across the slot width. The rotor assembly also includes at least one permanent magnet located in at least one magnet slot, the magnet having an increasing magnet width as radial distance from a rotor shaft increases. The rotor assembly further includes a retainer disposed in the magnet slot radially between the magnet and the at least one slot lip. Also disclosed is a method of securing at least one permanent magnet in a rotor assembly of an electric machine. | 02-05-2009 |
| 20090267436 | Method for encapsulating permanent magnets of a rotor of a generator and rotor of a generator - A method is provided for encapsulating permanent magnets of a rotor of a generator. Magnets, which are shorter than a rotor yoke in an axial direction, are placed outside of the yoke leaving a short portion of the yoke free at both ends. Spacers of a non-magnetic material are placed between the magnets. End barriers are placed on the free portions of the yoke. A thin sheet of a non-magnetic material is folded around the magnets and the spacers, covering the entire length of the rotor, including the barriers. An air tight membrane is placed on the outside of the sheet and sealed to the ends of the yoke so that the membrane and the yoke together form an air tight enclosure. A vacuum is applied to the air tight enclosure between the membrane and the yoke. Resin is infused into the air tight enclosure and set. | 10-29-2009 |
| 20100237734 | Method for mounting permanent magnets that form magnetic poles on the rotor of an electric machine - A method for mounting permanent magnets that form magnetic poles on a permanent magnet support surface of the rotor of an electric machine includes the steps of forming a mold by the placement of a mold part against the support surface in such a way that the mold cavity of the mold is bounded on one side by the support surface inserting a permanent magnet into the mold so that the inserted permanent magnet is held in the mold in a desired position with respect to the support surface, and filling the mold with a thermosetting adhesive in such that the adhesive bonds the permanent magnet with the support surface and completely fills any spaces formed between the permanent magnet and the wall of the mold cavity. | 09-23-2010 |
| 20120235531 | MOTOR-DRIVEN COMPRESSOR - A compressor includes a housing, a compression mechanism and an electric motor driving the compression mechanism. The electric motor includes a stator fixed to the housing, a rotary shaft rotatably supported by the housing, a rotor that is fixed on the rotary shaft and has a rotor core made of a plurality of laminated steel sheets, a magnet insertion hole formed through the rotor core, a permanent magnet loosely fitted in the magnet insertion hole, a first clearance formed between inner surface of the magnet insertion hole and outer surface of the permanent magnet, a second clearance formed between end surface of the rotor core and surface of the permanent magnet in the axial direction of the rotor core and resin filled in the first clearance and the second clearance so as to surround entire surface of the permanent magnet. | 09-20-2012 |
| 20130257212 | HIGH EFFICIENCY PERMANENT MAGNET MACHINE WITH SEPARATED TAB POLE ROTOR AND STACKED CERAMIC MAGNET SECTIONS - A permanent magnet motor, generator or the like that uses ceramic magnets in the rotor to concentrate the magnetic flux in the airgap. Poles are formed by pole plates with integral tabs forming north and south poles with magnetic separators therebetween. Magnet sections are stacked axially. | 10-03-2013 |
| 20150022042 | MOTOR - A motor having an improved structure to enhance durability. The motor includes a stator including stator cores and coils wound on the stator cores, a rotor disposed at the inside of the stator and rotated by electromagnetic interaction with the stator, and a motor shaft combined with the rotor so as to be rotated together with the rotor. The rotor includes a plurality of rotor cores arranged to be separated from each other in the circumferential direction of the rotor, a plurality of rotor slots formed between the plurality of rotor cores, a plurality of permanent magnets inserted into the plurality of rotor slots, molding members filling the plurality of rotor slots so as to cover the outer ends of the plurality of permanent magnets, and a plurality of reception holes provided on the plurality of rotor cores so as to be filled with the molding members. | 01-22-2015 |
| 20150349596 | Method for producing a rotor for an electric motor - A method for producing a rotor body includes producing one or more fiber strips from fiber material, and providing cutouts in the fiber strip or in the fiber strips. The fiber strip or the fiber strips are oriented in relation to one another such that at least one of the cutouts lies on another of the cutouts so that cutouts which lie one above the other form a three-dimensional receptacle for a magnet. A rotor for an electric motor with a rotor body is also provided. | 12-03-2015 |
