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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 |
| 7750530 | Outside rotor electric machine with reduced air gap variation A method of providing an outside rotor electric machine having a reduced radial air gap variation across an axial length of the air gap, the machine including a rotor having a cylindrical elongated portion supporting magnets and a flange extending at least partially... | 07/06/2010 |
| 7723891 | High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux A motor including a mounting shaft having a hollow channel and a bearing attached to each end, a cylindrical hub having a hollow core for the mounting shaft, and plural rows of plural Molded Magnetic Flux Channels with a hollow core and a channel forming a U-shaped ... | 05/25/2010 |
| 7548007 | Rotor shaft coupling A rotor has a rim that diverges from its peripheral portion. Accordingly, the rim more securely couples with a shaft. More specifically, the rotor has a support member with a peripheral portion and an interior rim. The interior rim defines a central opening and, as ... | 06/16/2009 |
| 7492074 | High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux stator A motor including a mounting shaft having a hollow channel and a bearing attached to each end, a cylindrical hub having a hollow core for the mounting shaft, and plural rows of plural Molded Magnetic Flux Channels with a hollow core and a channel forming a U-shaped ... | 02/17/2009 |
| 7411325 | High efficiency combination motor and drive A brushless permanent magnet motor has a rotor constructed of spaced ferromagnetic backirons and a circumferential array of alternating polarity magnetic poles that drive magnetic flux back and forth across an armature air gap between the backirons. A stator include... | 08/12/2008 |
| 7119471 | Direct drive high torque compact synchronous motor A synchronous motor includes a housing 20, a stator assembly 30 mounted within the housing 20, a rotor assembly 40 rotationally mounted within the housing 20, a rotor shaft 50 having an upper mounting surface 52 attac... | 10/10/2006 |
| 7112908 | Rotor for synchronous induction motor, synchronous induction motor, fan motor, compressor, air conditioner, and refrigerator There are problems in a rotor having a slit that it is difficult to increase the number of rotations of the rotor, since the centrifugal force is received at both ends of the slit, and if the connection part is made thick to increase the number of rotations, the pro... | 09/26/2006 |
| 7102259 | Rotor of a synchronous induction electric motor A rotor of a synchronous induction electric motor according to the present invention includes a slot for generating induction torque and a slit for generating reluctance torque. The slot and the slit are filled up with aluminum which is short-circuited by an end-rin... | 09/05/2006 |
| 7030531 | Controlled reluctance AC induction motor An electric motor operated by AC current, that includes a stator and a rotor supported for rotation about an axis relative to the stator. The stator is provided with field windings angularly distributed about the rotor axis and capable of producing a magnetic field ... | 04/18/2006 |
| 6979177 | Rotor assembly A rotor assembly includes a housing and a hub. The housing has an open end and an opposed closed end, and is formed with a raised portion in the central location of the closed end. The hub is mounted on the closed end of the housing and covers the housing except for... | 12/27/2005 |
| 6798987 | Driving apparatus, light-amount regulating apparatus, and lens driving apparatus A driving apparatus includes a rotor rotatable about a rotational axis and having a cylindrical magnet portion whose outer circumferential surface are divided along a circumferential direction into a plurality of differently magnetized portions, at least an outer ma... | 09/28/2004 |
| 6737769 | Easy-to-start-structure of a DC brushless motor An easy-to-start structure for a D.C. brushless motor comprises a base including a through-hole. Plural windings and an IC control member are mounted to the base. At least one magnetically attractive positioning member is mounted to the base and located between two ... | 05/18/2004 |
| 6731043 | One-piece field core shell A spin-roll formed one-piece field core shell formed from a blank disc of sheet metal. The one-piece field core has an outer annular ring integral to and encircling a center axis of the disc and extending from a bottom external surface in a direction that is perpend... | 05/04/2004 |
| 6580190 | Circumferential confronting type motor A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the radial direction. The drive magnet has a plurality of divided m... | 06/17/2003 |
| 6172439 | Motor rotor using a cylindrical yoke with slit A cylindrical yoke 8 bonded to an inner surface 44 of a cylindrical portion 43 of a rotor case 40 of a motor has a yoke separating slit 85 for separating the yoke 8 in the circumferential direction. A cylindrical rotor magnet 9 is partially bonded to an i... | 01/09/2001 |
| 6127762 | Rotor A rotor (1) is of a substantially spherical shape with one complete half of the sphere (2) still remaining. The rotor (1) effective takes the shape of the head of a "mushroom." The other half of the sphere has had its material removed or omitted forming t... | 10/03/2000 |
| 6078121 | Rotor assembly for a rotating machine A rotor assembly for a rotating machine includes a substantially cylindrical main rotor body having an outer surface. A plurality of longitudinal ribs project from the outer surface of the main rotor body. A plurality of primary recesses are defined by ad... | 06/20/2000 |
| 6060805 | Canned motor A canned motor includes a rotor having a rotor core and a rotor can covering an outer circumferential surface of the rotor core, and a stator fixedly disposed around the rotor with a radial gap defined therebetween and having a stator core and a stator ca... | 05/09/2000 |
| 6047461 | Rotor for permanent magnet excited, high-speed electric rotary machine, manufacturing method of the same and electric rotary machine including the same A manufacturing method of a rotor for a permanent magnet-excited, high-speed electric rotary machine according to the present invention comprises, covering an outer circumferential surface of at least one permanent magnet by a fiber-reinforced plastic pro... | 04/11/2000 |
| 5973434 | Armature for rotary electric machine having welded joint between upper and lower coil conductors An armature coil is formed by welding upper and lower coil conductors each having a coil trunk, a pair of coil arms and a pair of coil extensions. Between an upper coil extension and a lower coil extension to be welded together, a recess is formed. This r... | 10/26/1999 |
| 5936322 | Permanent magnet type synchronous motor A permanent magnet type synchronous motor has a stator having teeth that are circumferentially aligned, and a rotor disposed radially inward of the stator. The rotor is made up of permanent magnets facing the teeth and mounted on a rotor core having protr... | 08/10/1999 |
| 5929551 | Rotor section containment with steel punched star A rotor assembly for a synchronous reluctance machine has a plurality of steel punched star-shaped supports secured along a shaft at spaced locations for retaining a plurality of laminated rotor sections. The star-shaped supports have four equiangularly s... | 07/27/1999 |
| 5777418 | Transverse flux motor with magnetic floor gap A transverse flux motor includes an outer stator having a plurality of outer stator soft iron elements which are substantially disposed with uniform separation from one another. The flux motor further includes an inner stator having a plurality of inner s... | 07/07/1998 |
| 5763976 | Stator wound resolver with staggered rotor A stator wound resolver comprising: a stator and a rotor aligned on an axis; the stator having a plurality of teeth with input and output windings disposed on some or all of the teeth, the input and output windings exhibiting a mutual inductance character... | 06/09/1998 |
| 5739613 | Flat three-phase reluctance type motor A three-phase reluctance type motor flat in shape and capable of generating a large output torque and rotating at high speeds, comprising a flat stationary armature (16) having a circumferential surface provided with three multiplied by integral number of... | 04/14/1998 |
| 5739615 | Rotor for reluctance machine A rotor for a reluctance machine comprises a rotor made up of a stack of laminations defining a cross-sectionally integral rotor profile consisting of rotor poles arranged about a rotor core. A non-magnetic insert is arranged axially along the stack of la... | 04/14/1998 |
| 5731648 | Laminated rotor core for mounting permanent ring magnets One aspect of the invention is a rotor core for use with a permanent ring magnet in an electric motor which serves to minimize and evenly distribute thermal stresses in the rotor without undermining the efficiency of the motor by distorting the flux retur... | 03/24/1998 |
| 5682670 | Method for the fabrication of multipole magnets A method of forming a multipole magnet wherein two backing sheets of paper or film material are screen or stencil printed with an ink containing magnetic particles and a carrier material to provide respective complementary patterned areas thereon, the pat... | 11/04/1997 |
| 5650680 | Dynamo electric machine with permanent magnet rotor structure A permanent magnet generator includes an annular stator with windings on the inner face. A round rotor is rotatably mounted in the stator, and includes a plurality of circumferentially spaced rectangular openings inwardly of the outer peripheral portion o... | 07/22/1997 |
| 5422527 | X-ray tube target drive rotor An induction motor rotor unit adapted to support and rotate an X-ray target anode in an X-ray tube comprises a stacked array of very thin highly magnetic annular laminations on a cylindrical carrier. Gold plated copper conductor bars are placed in longitu... | 06/06/1995 |
| 5220228 | Rotating electric machine with bevelled armature poles A rotating electric machine comprises an armature arrange opposite the periphery of a magnet which is rigidly fitted to a rotary shaft. The armature has a plurality of salient poles arranged on it and projecting towards the magnet. The machine is characte... | 06/15/1993 |
| 5079460 | Magnetostrictive roller drive motor A magnetostrictive drive motor having a rotary drive shaft in the form of a drum which is encircled by a plurality of substantially equally spaced roller members in the form of two sets of cones which are in contact with respective cam surfaces on the ins... | 01/07/1992 |
| 5039897 | Rotor structures of A.C. synchronous servo motor Provided is a rotor structure by which slot ripple is reduced so that an a.c. synchronous servo motor can achieve a smooth rotation. A rotor structure is provided in which two rotor elements (30, 30') are juxtaposed and brought out of registration in a ci... | 08/13/1991 |
| 5001380 | Rotor for an asynchronous motor with multiple layered screen An asynchronous motor comprising a stator 1, a rotor including a core 2 and a multilayer screen 3. Each layer 4 of the screen 3 is made of an iron-containing alloy of high electrical conductivity, the value of electrical conductivity in each of the succee... | 03/19/1991 |
| 4885497 | Winding for a pulse power AC generator rotor A winding for a rotor in a pulse power AC generator has an electrical conductor extending along a closed loop path about an exterior periphery and first and second opposite ends of the rotor core. The conductor includes at least four side conductor portio... | 12/05/1989 |
| 4701649 | Brushless motor with symmetrical leads for preventing signal distortion In a brushless motor, a magnetizing member for rotation driving with N-poles and S-poles arranged alternately is formed on a flat plane portion of a rotor magnet, and a member for detecting the rotational speed with N-poles and S-poles arranged alternatel... | 10/20/1987 |
| 4564777 | Reinforced permanent magnet rotor with cast zinc A novel rotor construction is disclosed, in which plural permanent magnets are arranged on the outer periphery of a rotor core, which are protected with a cover, and in which a member is placed at an axial end of the rotor core cast with end rings with a ... | 01/14/1986 |
| 4495430 | Balanced armature winding for motors The back EMF generated in armature coils is substantially balanced by causing the coils located a greater distance from the axis of rotation of the armature to have fewer turns than the coils located closer to the armature axis of rotation. Alternatively,... | 01/22/1985 |
| 4486678 | Rotor for a permanent magnet generator A rotor for a permanent magnet generator has a carrier of nonmagnetic material. One or more elements of magnetic material are carried by the carrier and provide a magnetic path in parallel with the primary magnetic path for operating flux which is coupled... | 12/04/1984 |
| 4471248 | Electric motor with elastic vibration damping rotor to shaft coupling In an electric motor comprising a rotor which is connected to at least one hub on the motor shaft by means of elastic connecting elements, at least two elastic connecting elements are constructed as ribs which have a resilient action, which extends substa... | 09/11/1984 |
