Quotables
"There is no reason anyone would want a computer in their home."
Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
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 |
| 7417345 | Fan assembly with magnetic thrust bearings A motor. The motor includes a stator, a rotor, a top magnetic structure, and a bottom magnetic structure. The stator is disposed in a frame. The rotor is also disposed in the frame, corresponding to the stator. The rotor comprises a shaft, extended axially from the ... | 08/26/2008 |
| 7030527 | Data storage device with mechanism to control rotation of spindle motor Embodiments of the present invention effectively control, by a simple structure, floating of a rotor of a fluid dynamic bearing motor mounted in a hard disk drive. In one embodiment, a base is formed of a magnetic material. The attractive force caused by the magneti... | 04/18/2006 |
| 6982505 | Prestressing structure for rotationally balancing a motor A prestressing structure for rotationally balancing a motor includes a motor stator, a motor rotor, a magnetically conductive member and a balancing magnet. The motor stator has an axial hole and an axial tube extending therethrough. An end of the axial tube provide... | 01/03/2006 |
| 6933642 | Hydrodynamic gas bearing A rotatable hub in which a supporting shaft having hydrodynamic pressure generating grooves is inserted comprises an annular thrust bearing plate in its lower portion and annular permanent magnets in its upper portion. The thrust bearing plate is inserted between th... | 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 |
| 6817507 | Capstan motor for magnetic recording and reproducing apparatus A capstan motor for a magnetic recording and reproducing apparatus includes a stator having a coil disposed on outer peripheral direction thereof, and a rotor having a magnet to correspond to coil and rotated by an electromagnetic interaction between the coil and th... | 11/16/2004 |
| 6448675 | Rotational balancing structure for an A.C. motor A rotational balancing structure for an A.C. motor comprises a casing having an axle seat for rotatably holding a shaft of a rotor. A balancing sheet and a stator are mounted in the casing. The stator comprises plural stacked silicon steel plate wound aro... | 09/10/2002 |
| 6437471 | Single-bearing permanent-magnet motor Vibration applied to a rotary shaft in an axial direction is suppressed when the rotary shaft is supported by a single hearing. A width dimension in a direction parallel with an axial direction of rotor-side magnetic poles of a permanent magnet unit is se... | 08/20/2002 |
| 6081057 | Spindel motor for a disc drive In a spindle motor for a disc drive in which a rotatable body having a disc mounted thereon is rotatively driven by a motor, the rotatable body is rotatably supported on a support member through a ball bearing and a hydrodynamic fluid bearing, and a prelo... | 06/27/2000 |
| 5942824 | Motor and method of manufacturing same A motor comprising: a rotor which is supported via a rotating shaft in a radial direction of the rotating shaft, the rotating shaft being disposed around a fixed shaft provided on the side of a stator to form a dynamic-pressure bearing; a stator-side thru... | 08/24/1999 |
| 5598048 | Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor An apparatus for rotatably journaling a rotor of a flat spindle motor about a stator comprising a spindle magnet disc disposed on the rotor assembly of the flat spindle motor and journaled about the spindle motor shaft having a disc shaped first magnetize... | 01/28/1997 |
| 5587617 | Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor An apparatus for rotatably journaling a rotor of a flat spindle motor about a stator comprising a spindle magnet disc disposed on the rotor assembly of the flat spindle motor and journaled about the spindle motor shaft having a disc shaped first magnetize... | 12/24/1996 |
| 5574322 | Motor, a printer having such a motor and a disk drive system having such a motor A motor has a rotor mounted on a stator to rotate about a rotation axis. The rotor is driven due to the interaction of a drive coil on the stator and a permanent magnet on the rotor. A magnetic thrust bearing, having permanent magnets on the stator and ro... | 11/12/1996 |
| 5543672 | Rotation detecting device with magnet brake A rotation detecting device for vehicle speedometers includes a housing, a magnetic induction device, and a magnetized rotor near the magnetic induction device. The rotor is connected through a coupling to a rotation source. A braking device forms a magne... | 08/06/1996 |
| 5508575 | Direct drive servovalve having magnetically loaded bearing A direct drive servovalve wherein a limited angle force motor is interconnected with a spool valve to convert rotary motion of the drive motor rotor to linear motion of the spool for the control of fluid from a source thereof to a load. The permanent magn... | 04/16/1996 |
| 5493161 | Sealed magnetic fluid bearing for polygon mirror drive motor A motor provided with a magnetic fluid bearing device for suppressing vibration and irregular rotation as well as preventing the magnetic fluid from being scattered from a bearing portion and the inside of the motor. The motor includes a rotor having a po... | 02/20/1996 |
| 5465019 | High-efficiency, low-noise electronically commutated motor having improved starting capability A single-phase ECM in a radial flux configuration has parking magnets situated on both ends of its rotor and parking lamination extensions situated on its stator, such that the parking magnets and parking lamination extensions interact to provide sufficie... | 11/07/1995 |
| 5325006 | Sealed magnetic fluid bearing for polygon mirror drive motor A motor with a magnetic fluid bearing for suppressing vibration and irregular rotation as well as preventing the magnetic fluid from being scattered from a bearing portion in the inside of the motor. The motor includes a rotor having a polygon mirror moun... | 06/28/1994 |
| 5172021 | Deflector motor with gas bearing and magnet thrust bearing An electric motor, in which the thrust bearing action is performed by the magnetic attraction forces induced between a annular stator core with toroidal coils and magnets confronting the stator core, includes at least a cup-shaped member with a central cy... | 12/15/1992 |
| 5142176 | Motor with rotor magnet thrust bearing A motor having a housing, an axle fastened to the housing, a rotation sleeve inserted with a space around the axle to form a dynamic pressure air bearing together with the axle, a magnet fastened to the rotation sleeve, and a stator core fastened to the h... | 08/25/1992 |
| 4363984 | Digitally controlled brushless motor A brushless motor actuated by a predetermined frequency and driven at constant speed with less wow and flutter component in accordance with a pulse signal of the frequency applied. The motor has a rotor enclosed in a stator, the latter having driving wind... | 12/14/1982 |
