Bizarre Patents
A method to tenderize meat with an explosive shockwave.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7235906 | Magnetic bearing using displacement winding techniques The present invention provides a linear, rotary spherical motor with an integrated magnetic bearing. The motor can be a toothless permanent magnet, BLDC design composed of a permanent magnet rotor and a Zigzag stator winding containing at least two-phase windings, w... | 06/26/2007 |
| 7143506 | Rotary electric machine and method for manufacturing the same A method for manufacturing rotary electric machine that has a stator winding to provide a stator winding that has a plurality of conductors wound one over another. The conductors are wound with left and right ends. Therefore, the stator winding on the stator core ha... | 12/05/2006 |
| 6958564 | Armature with unitary coil and commutator An armature for an electromotive device having a unitary coil and armature is disclosed. The armature may include a coil having inner and outer winding portions separated by an insulator, each of the winding portions comprising a plurality of sheet metal conductors,... | 10/25/2005 |
| 6930419 | Bar type vibration motor A bar type vibration motor includes a stator unit including a body having a bearing insert groove formed at one end thereof and exposed to the outside, and a magnet attached to the body; a rotor unit including a rotary shaft having one end fixed to an eccentric weig... | 08/16/2005 |
| 6501199 | Automatic wheel-driven generating means and lighting device thereof An automatic wheel-driven generating device mainly includes a base fixedly mounted on a wheel around an axle thereof and provided with a centered hollow column and one or more radially extended hollow pipes for each receiving a light-emitting element ther... | 12/31/2002 |
| 6058594 | Process for manufacturing an electric motor The present invention refers to an electric motor comprising a stator with an internal permanent magnet and a tubular magnetic return sleeve surrounding said permanent magnet whereby an annular air gap is formed therebetween, said magnetic return sleeve b... | 05/09/2000 |
| 5942827 | Electric motor The present invention refers to an electric motor comprising a stator with an internal permanent magnet and a tubular magnetic return sleeve surrounding said permanent magnet whereby an annular air gap is formed therebetween, said magnetic return sleeve b... | 08/24/1999 |
| 5847484 | Sleeve type of coreless motor with reduced starting current According to the present invention, a coreless motor is provided, which comprises: a stator having a circular slot therein, magnets on a wall of the slot, two brushes attached thereto, and metals, which are arranged concentrically; and a rotor having a sh... | 12/08/1998 |
| 5780947 | Coreless motor A coreless motor has a cylindrical shell of magnetic material, a column-like magnet securely and coaxially positioned in the shell to form a cylindrical clearance therebetween, and a rotor. The rotor includes a cylindrical winding of a coil, arranged coax... | 07/14/1998 |
| 5621260 | Coreless motor In a coreless motor, a shaft of the coreless motor does not pass through a magnet but is arranged in series with a columnar magnet on the same axis. The magnet is inserted in a tubular frame made of magnetic material and a coil which is mounted on the sha... | 04/15/1997 |
| 5374867 | Coreless motor A coreless motor has a permanent magnet integrated with a casing, a commutator, and a rotor coil unit integrated with an output shaft. The rotor coil unit is comprised of an integral number of coil blocks superposed with one another. Respective coil block... | 12/20/1994 |
| 5270602 | Corless motor A coreless motor has a permanent magnet integrated with a casing, a commutator, and a rotor coil unit integrated with an output shaft. The rotor coil unit is comprised of an integral number of coil blocks superposed with one another. Respective coil block... | 12/14/1993 |
| 4533848 | Rotor of coreless motor A rotor of a coreless motor high in mechanical strength and durable against a high torque for a long time is provided. A non-metal disk member is provided for holding a cylindrically wound coil secured at its one axial end to the periphery of the disk in ... | 08/06/1985 |
| 4412146 | Electric motor control An electric motor construction is described in which the permanent magnet and a flux return element are embedded in a molded structure serving as a face plate and including seats for bearings as well as a bore for the motor shaft.... | 10/25/1983 |
| 4349761 | Flat type coreless rotary electric machine The present invention relates to a rotary electric machine of the type in which a coreless rotary coil having an end connection only at its one side end is mounted on a shaft rotatably within the magnetic field of a stator field magnet and is directed to ... | 09/14/1982 |
| 4323806 | Miniature rotary electric machine The present invention relates to a miniature rotary electric machine and more particularly to a coreless type of rotary electric machine. The coreless rotary electric machine includes a rotor coil formed as a coil body in a form of cup with its one end be... | 04/06/1982 |
| 4267477 | Electromotor An electromotor includes a hollow elongated housing, a motor shaft rotatably mounted in the housing and a magnet surrounding the motor shaft. A winding is installed in a circumferential gap between the inner surface of the hollow housing and the outer sur... | 05/12/1981 |
| 4210832 | Electric shavers Electric dry shaver comprising a cutting head having at least one movable cutter, an electric motor for driving the movable cutter and electric circuit means for the motor, characterized in that the motor has a stator/rotor assembly of which at least part... | 07/01/1980 |
| 4181866 | Permanent magnet with reduced thickness at the pole areas for small size d-c motors A cylindrical field magnet for use in small size d-c motors having a coreless armature. The magnet includes magnetic pole portions varying in wall thickness from the interpolar portions and possesses an increased quantity of magnetic flux in its entirety ... | 01/01/1980 |
| 4143288 | Coreless motor A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and d... | 03/06/1979 |
| 4136294 | Direct-current micromotor A direct-current micromotor is disclosed which comprises a rotor bearing a motor winding, the rotor being arranged for rotation between a core part and a mantle part of a stator structure. The core part comprises a permanent magnet and the mantle part is ... | 01/23/1979 |
| 4125791 | Stator for an electrical machine A stator for an electrical machine, comprising an outer ferromagnetic flux return ring, a permanent magnet system arranged inside the flux return ring, and a face plate supporting the flux return ring and the permanent magnet system. The latter comprises ... | 11/14/1978 |
| 4103196 | Coreless motor A miniature coreless motor in which the coil of the rotor is wound in hollow cylindrical shape rotatable within an air gap between a cylindrical permanent magnet and a cup-shaped yoke, the yoke having pole-pitch zones of alternate polarity. The winding is... | 07/25/1978 |
| 4093882 | Coreless motor Disclosed is a coreless motor comprising a rotor having a plurality of flat-type loop coils arranged on a rotor substrate, a motor housing having a journal bearing for rotatably supporting said rotor, and a stator which includes a pair of permanent magnet... | 06/06/1978 |
| 4080540 | Low-powdered stepping motor A low-powered stepping motor is rotated and controlled by a driving circuit generating a pulsating current has a fixed field system formed by a permanent magnet, a soft magnetic material, etc. and a rotor disposed within the fixed field system, and formin... | 03/21/1978 |
| 4052630 | Synchronous micromotor A synchronous micromotor having a central rotor shaft coaxially surrounded by a permanent magnet structure including a plurality of north poles and a plurality of south poles which circumferentially alternate with the north poles, all of these poles being... | 10/04/1977 |
| 3993920 | Coreless motor A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and d... | 11/23/1976 |
