Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7309939 | Current limiting means for a generator The invention provides means of limiting maximum current conducted through windings of an electric machine having a rotor and a stator. By encouraging an appropriate leakage flux around a winding, a leak impedance can be achieved which may be used, according to the ... | 12/18/2007 |
| 7126246 | Rotary electric machine with stator having an annular array of poles Coils in respective poles are all wound in the same shape. The coils are wound such that one of the winding ends in a predetermined layers, for a single turn, is passes to an adjacent layer, or single turns at the winding ends in a predetermined layer are wound to d... | 10/24/2006 |
| 7075206 | Vehicle alternator stator winding having dual slot configuration A stator for an electric machine includes a stator core having a plurality of circumferentially-spaced and axially-extending core slots. The core slots extend between a first and a second end of the stator core and a stator winding having a plurality of phases is po... | 07/11/2006 |
| 7018249 | Boat propulsion system A boat propulsion system includes at least one propeller, at least one electric motor by which the at least one propeller can be driven, and one converter-fed power supply unit. The at least one electric motor can be supplied with electric power by the power supply ... | 03/28/2006 |
| 6879077 | Motor, motor stator and method for manufacturing the same A motor has a stator core having a plurality of salient poles and stator coils wound on the salient poles, respectively, each of the stator coils having a common side coil end part and a coil winding part. The common side coil end part of each of the stator coils ex... | 04/12/2005 |
| 6515394 | Stacked coil assembly for a stator The present invention provides a coil assembly comprising at least two end coil pieces having a U-shaped end and an open end, the open end comprising a first end and a second end, the second end having a terminal length greater than the first end, and at ... | 02/04/2003 |
| 6369482 | Generator armature bar support system and related method A generator armature bar support system includes in a temporary assembly state, an elongated armature bar having a bottom surface, a top surface and a pair of side walls. A spacer is then temporarily located on the top surface of the armature bar; and an ... | 04/09/2002 |
| 6229241 | Structure and manufacturing method for motor and stator A motor having a lap winding structure and a manufacturing method therefor, wherein inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction of the stator. All the coils are inserted in slots in succ... | 05/08/2001 |
| 6011338 | Electric motor having auxiliary winding arrangement for electrostatic shielding An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing driven win... | 01/04/2000 |
| 5929549 | Fault tolerant electric machine An electric machine, such as a motor or a generator, comprises a stator having a plurality of stator poles defining a plurality of slots, a rotor positioned within the stator, and at least a two sets of stator windings wound on the stator poles and occupy... | 07/27/1999 |
| 5723930 | Stators incorporating blank winding slots for a permanent magnet brushless motor and method of winding thereof A winding method to accomplish a stator coil of a motor by use of the blank slot technique. The number of stator slot of the motor is not an integer multiple of the number of poles, thus the number of stator slots, to which each individual pole correspond... | 03/03/1998 |
| 4107587 | Three-phase DC motor having non-superimposed armature coils A coreless three-phase DC motor comprising a coil type armature formed with insulated windings. The armature is of a disc- or cylindrical-shape and is set rotatably against a field magnet provided with 2n magnetic poles N and S magnetized in equal angular... | 08/15/1978 |
| 4013909 | Electric motors A pole-amplitude modulation type, speed-changing, 3-phase alternating current electric motor or generator having a composite stator winding comprising two 3-phase winding components. The 3-phase winding components are in themselves pole-amplitude modulati... | 03/22/1977 |
| 3953753 | Three phase alternators A three-phase alternator, particularly suited for automotive use, having three stator winding sections each including a given number of coils, with each coil encompassing two stator poles and separated from the next coil in the section by an unwound pole.... | 04/27/1976 |
