Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7291953 | High performance motor and magnet assembly therefor A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic fie... | 11/06/2007 |
| 6137200 | Compliant motor rotor retainer A disk drive has a sleeve-bearing spindle motor having a rotor for rotating the disk of removable data storage cartridge. A retainer which is compliant in the direction of axial movement of the rotor stops the axial movement. The retainer is mounted on a ... | 10/24/2000 |
| 5434454 | Transient-free synchronous electrical power machine Proximity switches and circumferentially movable stator windings allow a motor-generator to simultaneously sense and switch from a synchronous motor position to a synchronous generator position. This mechanism replaces the conventional separate sensing an... | 07/18/1995 |
| 5311062 | Transient-free synchronous electrical power machine Proximity switches and circumferentially movable stator windings allow a motor-generator to simultaneously sense and switch from a synchronous motor position to a synchronous generator position. This mechanism replaces the conventional separate sensing an... | 05/10/1994 |
| 4885493 | Output voltage control apparatus of a permanent magnet alternator A permanent magnet alternator including a flux diversion member resiliently and magnetically coupled to the permanent magnet rotor for rotation therewith, an auxiliary (control) permanent magnet rotor rigidly coupled to the flux diversion member for rotat... | 12/05/1989 |
| 4802347 | Pump motor/basket brake for an automatic washer An automatic washer is provided with a separate motor to drive the drain pump, the motor having a displaceable stator portion connected to the basket brake mechanism such that when the pump motor is energized the basket brake will be released. Such a cons... | 02/07/1989 |
| 4103194 | Voltage generators A voltage generator comprising a first and a second mechanical system which systems are arranged for relative rotation to one another by means of a shaft incorporated in the first system being supported in bearings mounted in the second system, the shaft ... | 07/25/1978 |
| 4100442 | Electrically driven oscillating capacitor device A spring member is resin bonded to a piezoelectric material body at one end nd at the other end carries the oscillating electrode of a Kelvin probe capacitor used for electron work function measurement under vacuum. The piezoelectric material body can be e... | 07/11/1978 |
| 4085345 | Torque-limiting stop device A reversible electric motor has a torque limiting stop device actuable to stop the motor by angular displacement of the motor casing when an opposing torque on the motor shaft exceeds a threshold value. Complementary profiles are arranged to hold the moto... | 04/18/1978 |
