Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7180214 | Condenser fan motor dust shield A dust shield for a refrigeration condenser fan motor includes a shroud having an opening for a motor output shaft, and a hub extending from the shroud. The shroud forms an enclosure to prevent contaminants from interfering with operation of the motor. The hub inclu... | 02/20/2007 |
| 7034416 | Vented end cap with integrated splash shield for permanent magnet DC motor A permanent magnet D.C. electric motor 36 includes a motor housing 29 having first and second ends. The second end 42 is substantially closed and has an end of a shaft 35 extending there from. The second end includes vent holes 20 ... | 04/25/2006 |
| 6942390 | Bearing device for the rotor of a rotating machine A bearing arrangement for the rotor (11) of a rotating machine, in particular of a hydrogenerator (20) rotating about a vertical axis (19), comprises a combined axial and radial bearing (23) which is accommodated in a bearing body (24 | 09/13/2005 |
| 6638019 | Ceiling fan A ceiling fan has a stator 38 rigidly mounted to a shaft 33 and a rotor 40 rotatably mounted to the same shaft about the stator. The shaft is rigidly mounted to a housing. The rotor is supported upon a thrust bearing.... | 10/28/2003 |
| 6376949 | Electric motor fluid drainage interface An interface for mating a vertically oriented electric motor underneath a gearbox or other motor driven, fluid containing apparatus which substantially isolates the motor rotor and driven shaft from the external environment while facilitating the removal ... | 04/23/2002 |
| 6174149 | Scroll compressor with captured counterweight A counterweight is attached to a rotating shaft by a slip fit, combined with two axially abutting surfaces to hold the counterweight. The counterweight is preferably held at one face by a ledge formed on the shaft, and at the opposed face by a portion of ... | 01/16/2001 |
| 6129176 | Sound attenuating motor end shield A hydraulic pump-motor having an end shield which deadens the sound generated by the pump-motor do thereby result in a quieter unit. The present invention provides a conventional hydraulic pump-motor having an electric motor coupled to a pumping mechanism... | 10/10/2000 |
| 6097129 | Electronically commutated motor An electronically commutated external rotor motor has an external rotor having a cup-shaped housing and a radially magnetized permanent magnet connected in the cup-shaped housing. An interior stator is positioned in the cup-shaped housing. The interior st... | 08/01/2000 |
| 6031304 | Motor structure A motor structure including a rotor 1 having a permanent magnet 10 where north poles and south poles are alternately disposed in a moving direction of the rotor, a stator 5a including at least two stator yokes having stator pole teeth 3a, 4a respectively ... | 02/29/2000 |
| 6011337 | Double-sided, non-iron core, brushless, axial magnetic field permanent-magnet type DC motor A double-sided, non-iron core, brushless, axial magnetic field permanent-magnet type DC motor includes a shaft, two electromagnet units parallelly mounted on the shaft, and a permanent magnet unit mounted on the shaft between the electromagnet units and h... | 01/04/2000 |
| 5965999 | Vertical generator assembly A vertical generator assembly includes an engine having an engine housing and a vertical drive shaft extending downwardly from the engine housing. A support frame is attached to the bottom of the engine housing, and a stator is attached to the bottom of t... | 10/12/1999 |
| 5920137 | Brushless motor for driving washing machine A brushless motor for driving a washing machine includes a stator fixed to a frame and having a shaft holder with a hollow portion and a yoke wound by a coil; a rotor having a shaft rotatably supported within the hollow portion of the shaft holder; and a ... | 07/06/1999 |
| 5912515 | Motor with motor parts which are movable relative to one another A motor with reduced radial forces includes a first motor part made up of 2P permanent magnet poles surrounding a second motor part formed by a magnetic yoke having a number T of pole teeth and with an air gap between the first and second motor parts. The... | 06/15/1999 |
| 5757094 | Ventilation system for an AC machine having overhanging salient poles with juxtaposed shrouds A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient p... | 05/26/1998 |
| 5604390 | Permanent magnet motor with radically magnetized isotropic permanent magnet cylindrical yoke An electric motor with permanent-magnet excitation, particularly an internal-rotor or external-rotor motor, having motor parts which are movable relative to one another. One motor part forms a multi-pole excitation field in an air gap by means of permanen... | 02/18/1997 |
| 5598047 | Electric motor for driving magnetic disk A cylindrical shielding plate is provided on an inner circumference of the cylindrical recess formed on the bracket of an electric motor of a magnetic disk drive, and an open sector of the stator core is arranged to coincide with the moving direction of r... | 01/28/1997 |
| 5396757 | Directly motor-driven spindle assembly A directly motor-driven spindle assembly in a rotary shaft having one end supported on a bearing and the other end connected to a load a, driving apparatus fixed to the rotary shaft to rotate the rotary shaft, and control apparatus for controlling the mov... | 03/14/1995 |
| 5185544 | Ventilation structure in a vertically mounted motor A ventilation structure in a vertically mounted motor is able to avoid clogging from accumulated brush abrasion dust. A ventilation path adapted to provide ventilation between the interior and the exterior of the motor casing is formed from a communicatio... | 02/09/1993 |
| 5128574 | Brushless motor A brushless motor whose stator keeps hold of coils and is made of either magnetic-power-blended resin by molding techniques, or magnetic powder by sintering techniques.... | 07/07/1992 |
| 5117140 | Stator stabilizing assemblies An electromagnetic rotating machine having an annular stator and a rotor disposed within the stator, the stator including a frame and stator laminations secured to the frame and located radially inwardly of the frame, and the stator being mounted on a rig... | 05/26/1992 |
| 5099781 | Fluid resistant spindle drive motor A wafer spinning assembly for use in wafer processing includes a chuck for holding a wafer, a vertically oriented spindle connected to drive the chuck, and a spindle drive motor. The spindle drive motor includes an enclosed cylindrical housing which is en... | 03/31/1992 |
| 5057730 | Structure for locating permanent magnets in dynamic electric machine A dynamic electric machine has a yoke, permanent magnets to be fixed to the inner surface of the yoke and a guide plate disposed in the yoke and capable of guiding tie bolts which are extended axially through the yoke. A structure for locating the permane... | 10/15/1991 |
| 5010265 | Moisture drain bush for an engine starter motor A moisture drain bush for use in a moisture drain hole in an engine starter motor housing wall comprises a stem having a first and a second end and an axial length equal to a housing wall thickness and having an axial groove extending between the first an... | 04/23/1991 |
| 4992690 | Combination motor endshield and pump housing An electric motor for use with a pump has a stator assembly and a rotor assembly. The rotor assembly includes a rotatable shaft and a rotor affixed to and rotatable with the shaft. The stator and rotor assemblies are intended for installation in an applia... | 02/12/1991 |
| 4926541 | Method of assembling wound rotor of vertical type adjustable speed hydroelectric rotating machine at its installation site A method of assembling a wound rotor of a vertical type adjustable speed electric rotating machine at a power house of a hydroelectric power plant, with the method including a layer of a rotor body on its side into a pit in the power house with a top surf... | 05/22/1990 |
| 4900961 | Thrust bearing arrangement for capstan motor The shaft 1 of a capstan motor is vertically supported by a pair of relatively rotatable thrust rings 21, 22 disposed between an upper bearing 8 surrounding the shaft and the outwardly projecting flange of an E-ring 20 snapped into an annular groove 1a of... | 02/13/1990 |
| 4886991 | Asynchronous motor for spinning elements A spinning or twisting element is provided with an integral asynchronous motor having a laminate stator and a laminate rotor fixed to the shaft of the element. The individual laminates of the stator and rotor are each less than 0.3 mm in thickness and the... | 12/12/1989 |
| 4885492 | Rotary power module construction A rotary power module construction especially useful in computer room application. A motor-generator set consisting of an induction motor and synchronous generator is mounted vertically and a direct drive is provided between the components by an electrica... | 12/05/1989 |
| 4864838 | Drive apparatus for the vertical rolls of a universal rolling mill stand To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the verti... | 09/12/1989 |
| 4862581 | Method of constructing a dynamoelectric machine A dynamoelectric machine, preferably a motor adapted for use in ceiling fan applications, has a conventional rotor assembly mounted within a bore of a stator assembly. A stationary shaft extends through the rotor assembly and provides both a cableway for ... | 09/05/1989 |
| 4862026 | Motor unit bearing A motor having a stator and a rotor core rotatable therein and a rotor shaft secured for rotation with the rotor core comprising a motor housing, the stator supported by the motor housing, the rotor core having a counterbore extending partially along the ... | 08/29/1989 |
| 4859887 | Synchronous machine A synchronous machine having a rotor with a plurality of salient poles which are supported by a rotor rim. The rotor rim is arranged by means of a hollow annular device in mechanical connection with a rotor hub, cooling gas flowing into the annular device... | 08/22/1989 |
| 4831858 | Driving apparatus for vertical rolling mill A driving apparatus for a vertical rolling mill comprises a vertical electric motor mounted on a frame which has a hollow rotary shaft therein supported by a bearing and surrounding a portion of an intermediate shaft. The upper end of the intermediate sha... | 05/23/1989 |
| 4822256 | Bearing support for spherical pumps In a spherical pump, having a separation wall separating the wet part from the dry part of the pump, the column for the ball of the spherical bearing is made from the same material as the separation wall and is clamped in a cylindrical protrusion of the s... | 04/18/1989 |
| 4754182 | Link suspension for a rotor member A link suspension permitting limited rotation of a rotor in response to a magnetic control field uses a permanent magnet and support means having two contacting narrow concave curvilinear surfaces.... | 06/28/1988 |
| 4689511 | Drain assembly for an electric motor An improved drain structure for a vertically mounted electric motor to be positioned below a liquid sump into which the rotor shaft of the motor can be connected including a drip pan through which the rotor shaft passes, the pan having peripheral side wal... | 08/25/1987 |
| 4689512 | Electric motor An electric motor, e.g. for use in a hydraulic elevator, has a stator surrounding a rotor and a stator frame around the stator, to which frame end flanges of the motor are secured. The stator frame is formed by a metal sheet bent into the form of a trough... | 08/25/1987 |
| 4668885 | Flywheel energy storage device A structure flywheel energy-storage device is disclosed comprising a rotatable flywheel mounted on a vertical shaft and provided with a bearing. The flywheel is in the form of a magnetic ring structure with a spacing element disposed between the ring stru... | 05/26/1987 |
| 4644208 | Stator having a spiral yoke An induction motor for a motor-centrifugal pump unit has a stator shaped to provide a spherical airgap. The stator winding lies between teeth which extend radially of the spherical stator surface. The teeth are formed of built up strips of magnetic lamina... | 02/17/1987 |
| 4638198 | Electric submergible motor with bearing assembly isolated from axial loads Electric submergible motor of the long, multi-rotor section type employed for driving submergible pumps has bearing assemblies between successive rotor sections that are isolated from axial loads. For this purpose, the upper rotor section of each pair of ... | 01/20/1987 |
