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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7948133 | Rotor and rotating electric machine with the rotor A motor includes: a rotating shaft having a key groove formed in the peripheral surface of the rotating shaft; a rotor core having a through hole in which the rotating shaft can be received and a key portion formed on the inner surface of the rotor core defining the... | 05/24/2011 |
| 7737592 | Motor In a motor, an upper surface of a flange portion of a shaft is arranged axially below a bottom end surface of a rotor core. A spacer having an axial thickness slightly greater than that of the flange portion is arranged on a radially outer side of the flange portion... | 06/15/2010 |
| 7382072 | Generator An efficient and reconfigurable permanent magnet generator that comprises a permanent magnet subassembly and at least one exciter is disclosed. The permanent magnet generator may comprise a mainframe comprising at least one exciter, and a permanent magnet subassembl... | 06/03/2008 |
| 7358637 | Method of compressing lamination stacks for permanent magnet rotor The present invention is a method of compressing lamination stacks for a permanent magnet rotor. The method includes the steps of providing a plurality of stages of lamination stacks and magnet carriers on a rotor shaft to form an assembly; positioning a spacer betw... | 04/15/2008 |
| 7262525 | Rotor and motor having the same A rotor of a motor includes a cylindrical rotor shaft that is formed through plastic working. The shaft includes a positioning portion that is formed in an inner peripheral surface of the cylindrical shaft by the plastic working of the shaft. The positioning portion... | 08/28/2007 |
| 7170209 | Rotor for reluctance type rotating machine A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions. The rotor core has two keys which are formed at two positions on an inner circumfe... | 01/30/2007 |
| 7157827 | Spoke permanent magnet rotor A spoke permanent magnet rotor that includes a shaft defining a rotor axis. A first non-magnetic end portion is coupled to the shaft and a ferromagnetic pole piece defines an aperture therethrough. A second non-magnetic end portion is positioned to dispose the pole ... | 01/02/2007 |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 7148597 | Permanent magnet rotating electric machine A permanent magnet rotating electric machine uses no skewing under a predetermined current and voltage condition to prevent torque from decreasing and to decrease pulsation torque to make the machine less vibrating and less noisy. The permanent magnet rotating elect... | 12/12/2006 |
| 7109614 | Drive unit for determining a rotation position and/or rotation speed of a drive shaft A drive unit includes a housing and a drive shaft, in particular a spindle. The housing has a bearing which rotatably supports the drive shaft which is axially braced with the bearing by means of a clamping element. A measuring indication is arranged on the clamping... | 09/19/2006 |
| 7098584 | Deflection yoke A deflection yoke is used for a cathode ray tube (CRT) including a glass tube having a screen surface and a straight portion for accommodating an electron gun. The deflection yoke includes a main deflection yoke including first and second horizontal deflecting coils... | 08/29/2006 |
| 7057322 | Rotor for reluctance type rotating machine A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, th... | 06/06/2006 |
| 6960854 | Centrifugal turbine for breathing-aid devices The invention concerns an electric turbin (1) comprising a turbine rotor (4, 7), a turbine stator (2, 3), an electric motor member (5, 6) for driving the rotor (4, 7) in rotation relative to the stator (2, 3), and having the... | 11/01/2005 |
| 6933645 | Permanent magnet rotor and magnet cradle A magnet cradle for supporting a permanent magnet in an overhung recessed slot on the surface of a permanent magnet rotor having an axis of rotation. The cradle is non-magnetic and comprises a top and bottom wall abutting the permanent magnet. The cradle is sized to... | 08/23/2005 |
| 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 |
| 6731033 | Motor-driven system with stator provided with inductors There is provided a motor-driven system which realizes an optimum driving mode for an electric automobile, a robot carrier car, a drum of a copying machine, etc., and a motor-driven system having a function as an optimum actuator for such driving. In a rotational el... | 05/04/2004 |
| 6707206 | Magnetic material fixing structure of motor rotor A magnetic material fixing structure of motor rotor including multiple overlapping silicon steel plates. An outer circumference of each silicon steel plate is recessed to form multiple receptacles at equal intervals. A magnetic material is disposed in each receptacl... | 03/16/2004 |
| 6677692 | Rotor of small-sized motor A rotor (10) for a miniature electric motor includes a magnet (12) having a rotation axis (14) and a shaft (16) fixed concentrically to the magnet. The magnet (12) includes a through hole (20) extending coaxially with the rotation axis (14). The shaft (16... | 01/13/2004 |
| 6462450 | Pole wheel comprising a hollow magnet body and a retaining part A pole wheel of the type driven in rotation by a shaft employs a sensor system disposed on the pole wheel for detecting rotations of the shaft. The pole wheel includes a first component in the form of a hollow magnet body and a second component that is di... | 10/08/2002 |
| 6426576 | Electric machine having rotor adapted for high speed A rotor for an electric machine which rotor includes a multi-faced shaft, a plurality of pole pieces and permanent magnets carried by the shaft and a plurality of the rods extending between a pair of lateral flanges and passing through the pole pieces bet... | 07/30/2002 |
| 6388353 | Elongated permanent magnet synchronous motor A permanent magnet synchronous motor system. The system uses a permanent magnet AC synchronous motor having an elongated housing, of the type used in progressive cavity pumping applications. Within the stator, a multi-section rotor is rotatably mounted. T... | 05/14/2002 |
| 5298826 | Rotor for rotary electrical machinery A rotor for rotary electrical machinery comprising a permanent-magnet member made of a mixture having ferromagnetic material powder and a binder resin for chief ingredients, and a shaft, in which a recess whose projected contour on a plane orthogonally in... | 03/29/1994 |
| 4476449 | Switch actuator for a remote control unit An actuator for selectively actuating a circular array of electric switches. The actuator includes a molded plastic rotor part that contains particles of magnetic material. One portion of the rotor is magnetized to provide a permanent magnet that is effec... | 10/09/1984 |
| 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 |
