Patent application number | Description | Published |
20110140567 | Low Noise Rotor or Stator of an Electric Motor or Generator and Method of Assembling the Same - A stator or rotor of an electric motor or generator comprises a core formed of ferromagnetic material having a plurality of teeth arranged circumferentially about an axis. In one aspect of the invention, at least one retaining member connects the end portions of at least two of the teeth to each other in a manner inhibiting relative movement between said tooth end portions. By inhibiting relative movement between said tooth end portions, vibration is reduced. Vibration can also be reduced by welding interior surfaces of a core to each other. Reducing the vibration reduces the noise emissions of the rotor or stator during operation. | 06-16-2011 |
20110193433 | Stator with Cavity for Retaining Wires and Method of Forming the Same - A stator comprises a cavity formed into the insulator of the windings. The non-wound wire sections that extend from the windings and the electrical conductors attached thereto are housed within the cavity. A cap locks onto the stator insulator and prevents the non-wound sections of wire from migrating out of the cavity. | 08-11-2011 |
20110198956 | Stator with Monolithic Mounting Bosses and Assembly Comprising the Same - A stator comprises a ferromagnetic core having teeth. The stator also comprises first and second insulator members. The first and second insulating members collectively encircle each of the teeth of the core. The first insulating member comprising a plurality of mounting bosses spaced circumferentially from each other about the axis. Each of the mounting bosses has first and second retaining surfaces. The first and second retaining surfaces face axially opposite directions from each other and are exposed and are unobstructed by the second insulating member. | 08-18-2011 |
20120043844 | Direct Drive Rotor with Metal Coupler - An overmolded-type rotor for an outer rotor-type electric motor, wherein, in addition to a backing ring and magnets, a metallic coupler that comprises an inner axial surface configured to interface with a shaft to be driven by the rotor and an outer axial surface that corresponds to a multiplicity of outer teeth is overmolded with a polymer frame. | 02-23-2012 |
20130082579 | DIRECT DRIVE ROTOR WITH METAL COUPLER - A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler. | 04-04-2013 |
20130187500 | DIRECT MACHINE MOUNTING FOR INSULATED STATOR OF OUTER ROTOR MOTOR - Mounting structure is provided for support of a motor within a machine. More particularly, the mounting structure is configured for the support of a stator within the machine, with the mounting structure preventing axial and rotational movement of the stator relative thereto. | 07-25-2013 |
20130270930 | DIRECT DRIVE ROTOR WITH METAL COUPLER - A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler. | 10-17-2013 |
20140010642 | LOW NOISE STATOR OF AN ELECTRIC MOTOR OR GENERATOR AND METHOD OF ASSEMBLING THE SAME - A stator of an electric motor or generator comprises a core formed of ferromagnetic material having a plurality of teeth arranged circumferentially about an axis. In one aspect of the invention, at least one retaining member connects the end portions of at least two of the teeth to each other in a manner inhibiting relative movement between said tooth end portions. By inhibiting relative movement between said tooth end portions, vibration is reduced. Vibration can also be reduced by welding interior surfaces of a core to each other. Reducing the vibration reduces the noise emissions of the stator during operation. | 01-09-2014 |
20140232214 | DIRECT DRIVE ROTOR WITH METAL COUPLER - A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler. | 08-21-2014 |
20150076933 | STATOR TOOTH WIRE RETENTION WINGS - An overmolded stator for use in an electric motor is disclosed. The stator core includes a yoke and a plurality of arcuately spaced apart teeth extending at least substantially radially from the yoke. Each of the teeth presents opposite axially spaced apart endmost surfaces, a leg extending generally radially from the yoke, and a head extending generally arcuately relative to the leg to present opposite head ends spaced from the leg. A pair of wire retention wings extend at least substantially circumferentially outwardly relative to each of the teeth. | 03-19-2015 |
20150076954 | WEDGE FOR STATOR HAVING OVERMOLDED INSULATION - A stator for use in an electric motor is disclosed. The stator comprises an annular core, a plurality of wedges, and a plurality of wedge-retaining structures. The core includes a plurality of arcuately spaced apart teeth. Each of the teeth includes a generally radial leg and a head projecting from the leg to present a pair of arcuately spaced apart head ends. A slot opening is defined between the opposed head ends of each adjacent pair of teeth. Each of the wedges is received within a corresponding slot opening. Each wedge-retaining structure is at least in part fixed relative to the core and cooperates with a respective one of the wedges to compressibly retain the respective wedge between the head ends. | 03-19-2015 |