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 |
| 7126355 | Physical quantity sensing device with bridge circuit and temperature compensating method A physical quantity sensing device includes an AC voltage generator for generating an AC voltage and a bridge circuit that has first and second input points, to which the AC voltage is applied, and first and second output points connected to a differential amplifier... | 10/24/2006 |
| 7126313 | Architecture for electric machine The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 10/24/2006 |
| 7126247 | Concentrated winding stator coil for an electric rotary machine A concentrated winding stator coil of a proximal end extraction type two-layer winding arrangement includes numerous tooth coils which are connected in series to arrange serial coil units and also connected in parallel as pairs arranging respective phase windings. P... | 10/24/2006 |
| 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 |
| 7122933 | Reduced coil segmented stator A brushless permanent magnet (BPM) electric machine including a segmented stator having interconnected stator segment assemblies defining M stator teeth. Each of said M stator teeth having substantially the same axially facing size and shape. N coil windings are ind... | 10/17/2006 |
| 7122932 | Rotor for an induction device According to one embodiment, the present invention provides a rotor assembly. The exemplary rotor assembly includes a plurality of rotor laminations, which cooperate to form a rotor core, capped at each end by end members. Extending through the rotor core and the en... | 10/17/2006 |
| 7122920 | Motor and optical apparatus Provided are a motor and an optical apparatus each including: a rotatable rotor having a cylindrical magnet; a first coil; a first outer magnetic pole portion which is disposed at a center portion of the first coil and which is opposed to an outer circumferential su... | 10/17/2006 |
| 7122923 | Compact high power alternator An apparatus for converting between mechanical and electrical energy, particularly suited for use as a compact high power alternator for automotive use and “remove and replace” retrofitting of existing vehicles. The apparatus comprises a rotor with permanent mag... | 10/17/2006 |
| 7122934 | Rotating electric machine, motor-driven vehicle and resin insert-molding method A rotating electric machine comprises: a stator including a stator iron core having a plurality of slots and a stator winding incorporated in the plurality of slots; and a rotor rotatably disposed in the stator via a clearance; wherein a mold (i.e., a slot insulator... | 10/17/2006 |
| 7120985 | Manufacturing method of layered core A method of manufacturing a layered core. The method includes the steps of: arranging a first plurality of yoke parts to define a first configuration magnetic pole sheet layer having first and second oppositely facing sides; arranging a second plurality of yoke part... | 10/17/2006 |
| 7119467 | 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 ... | 10/10/2006 |
| 7119461 | Enhanced thermal conductivity ferrite stator A permanent magnet electric machine (i.e.: motor/generator) having a magnetic flux circuit including a stator and a permanent magnet rotor mounted for rotation about an axis relative to the stator. The stator has an electric circuit with windings electro-magneticall... | 10/10/2006 |
| 7116030 | High-speed synchronous motor An electric motor for operation at very high speeds comprises a ferromagnetic stator (11), a ferromagnetic rotor (13) having a rotor core (16) with a plurality of reluctance poles (17) spaced from the stator by an air gap (G), and a rotor... | 10/03/2006 |
| 7116031 | Helical core and fabricating method thereof The present invention provides a helical core and fabricating method thereof, by which a material and weight for fabrication of a core are reduced and by which a fabrication process is simplified. The present invention has a multi-layer structure configured by helic... | 10/03/2006 |
| 7116018 | Electric motor An oscillating motor has a rotor rotation of about ±15° from a rest position. The rotor has two salient poles which face a respective permanent magnet across a small air gap. The stator has a laminated stator core supporting the magnets and also two salient poles ... | 10/03/2006 |
| 7111380 | Method for forming an annular stator assembly A stator assembly that may be rounded into an annular form is disclosed that includes a plurality of stator segments where each stator segment defines a yoke portion and a stator tooth and a containment structure configured to position the stator segments relative t... | 09/26/2006 |
| 7109621 | Electric motor having a printed circuit board attached to a stator and at least partially supporting a bearing An electric motor that includes a stator, a rotor including a rotor shaft and a support member coupled to the stator. A first bearing is at least partially disposed within the support member and a printed circuit board is coupled to the stator. A second bearing is a... | 09/19/2006 |
| 7109618 | Motor The present invention relates to a motor that allows connection terminals to be stably fastened to a bobbin. The motor includes at least one lead wire wound around a bobbin of a stator to form a coil, at least one power line electrically connected to the lead wire t... | 09/19/2006 |
| 7109626 | Compact dynamoelectric machine A compact dynamoelectric machine having a rotor with a length which is less than the length of a corresponding stator core. The rotor is rotatable on a shaft supported by bearings, with at least one of the bearings being positioned longitudinally within the stator c... | 09/19/2006 |
| 7109628 | Motor having supply brushes A motor has a plurality of excitation coils, a commutator having a plurality of segments, a plurality of supply brushes and a short-circuit line. Each coil is connected to corresponding ones of the segments. The supply brushes include a plurality of supply brushes e... | 09/19/2006 |
| 7109611 | Silicon-steel structure for motor A silicon-steel structure for motor comprises a silicon-steel plate made of magnetic material. The silicon-steel plate comprises a main body of rectangular shape when being expanded and a plurality of tooth portions on top and bottom sides of the main body. The toot... | 09/19/2006 |
| 7105974 | AC motor having stator windings formed as loop coils, and control apparatus for the motor A synchronous AC motor has a stator with stator poles arranged as a plurality of circumferentially extending stator pole groups, with each stator pole group having a pair of corresponding circumferentially extending loop-configuration stator windings disposed adjace... | 09/12/2006 |
| 7105975 | Efficient axial airgap electric machine having a frontiron A rotating, dynamoelectric machine, such as an electric motor, a generator, or a regenerative motor, comprises a stator assembly that includes a backiron section, a plurality of stator tooth sections, and a frontiron. The dynamoelectric machine has an axial airgap-t... | 09/12/2006 |
| 7105979 | Compact heteropolar hybrid alternator-motor A brushless hybrid electrical machine for converting between electrical and mechanical energy has a rotor supported for rotation about an axis of rotation relative to a juxtaposed stator that is stationary and magnetically interacts with the rotor. The rotor include... | 09/12/2006 |
| 7103961 | Production method of amorphous laminate core and amorphous laminate core An amorphous laminated core and a method of making an amorphous laminated core by punching core pieces from amorphous thin sheet material, laminating the plural sheets of core pieces, and forming caulking through-holes by punching. Rod shaped materials are directed ... | 09/12/2006 |
| 7103964 | Method of manufacturing a circuit for an electrical machine A method of manufacturing a magnetic circuit for an electrical machine, the method comprising: using a cutting station to cut out at least one strip of sectors that are interconnected by deformable connections; and | 09/12/2006 |
| 7105971 | Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor A total of three permanent magnets, installed in a rotor core closely to an outer cylindrical surface of the rotor core, are disposed at predetermined angular pitches in the circumferential direction of the rotor core. All of the permanent magnets are magnetized in ... | 09/12/2006 |
| 7102258 | Manual electric generating device The present invention discloses a manual electric generating device, which comprises an upper casing, a lower casing; a rotor, a fixed stand, a hollow cylinder, a coil for generating power supply; and a printed circuit board for processing and outputting the power s... | 09/05/2006 |
| 7102265 | Four-pole synchronous motor The four-pole synchronous motor comprises a stator core having first magnetic pole cores formed at both ends of a connection body part of crisscrossed connection body parts and second magnetic pole cores formed at both ends of the connection body part. The first mag... | 09/05/2006 |
| 7098567 | Brushless permanent magnet machine with reduced cogging and torque ripple and method of producing the same An electrical machine comprises a stator and a rotor. The stator includes a plurality of stator teeth and a winding with compact coils disposed on the teeth. The winding has (m) phases and (p) poles; where (m) is an integer and is greater than or equal to two; where... | 08/29/2006 |
| 7098565 | Core-coil assembly of motor and manufacturing method thereof A core-coil assembly includes: a plurality of teeth parts radially arranged with their pole portions, which are formed at their one ends, forming an inner circumference; a molding part partially molded onto the teeth parts, forming inner sides of the teeth parts to ... | 08/29/2006 |
| 7098569 | Rotor assembly for a permanent magnet power electric machine A rotor assembly for use in an electric motor or generator where the mass of the rotor assembly is reduced with respect to conventional rotor assemblies. In addition, the rotor assembly is configured to be scalable to different sized electric motors. Within the roto... | 08/29/2006 |
| 7095821 | Non-rusting and non-particulating imaging X-ray tube rotor assembly An rotor assembly (30) for an imaging X-ray tube (32) is provided. The imaging X-ray tube rotor assembly (30) includes at least partially a magnetic non-corrosive material. A method of producing the imaging tube X-ray rotor assembly (30) ... | 08/22/2006 |
| 7095152 | Stator for a line-start electric motor The invention concerns a stator for a line-start electric motor, with a rotor accommodating chamber, in which a rotor is accommodated to be rotatable, and which has accommodating chambers for conducting rods and accommodating chambers for permanent magnets, and with... | 08/22/2006 |
| 7095150 | Apparatus for securing a bobbin of a reluctance machine A switched reluctance machine includes a stator body having a stator pole. A bobbin is located on the stator pole. A stator winding is disposed on the bobbin. The switched reluctance machine further includes a first housing unit for receiving the stator body and an ... | 08/22/2006 |
| 7093344 | Slack-forming mechanism for stator coil A slack-forming mechanism for stator coils that is able to impart slack of appropriate size to the stator coil without imposing an excessively heavy burden on the coiling machine. The slack-forming mechanism includes a coiling machine attachment jig having a protrud... | 08/22/2006 |
| 7091639 | External rotor motor An external rotor motor, suitable for driving a cooling fan, has a structure which facilitates automated assembly with proper angular registration. The rotor has a central shaft which is rotatably supported inside a bearing support tube having a tapered outer surfac... | 08/15/2006 |
| 7091643 | Polyphase electric motor An electric motor has a stator (28) and a rotor (36′) separated therefrom by an air gap (39). The rotor has a plurality of salient poles with pole shoes (260A) facing toward the air gap, and a yoke (200). The pole shoes serve to ... | 08/15/2006 |
| 7091645 | Concentrated-winding type stator coil unit for rotary electric machine A concentrated-winding type stator coil unit for a rotary electric machine is provided with a stator core having a core back and teeth protruding from the core back. Plural coils are wound around the teeth respectively. Each coil is composed of, for example, a first... | 08/15/2006 |
| 7084544 | Brushless DC motor Assembly quality of an armature coil is significantly enhanced since a BLDC motor is provided with a rotor having a permanent magnet and a rotor core, for forming a magnetic field; a stator having an armature coil and an armature yoke, for forming a rotating magneti... | 08/01/2006 |
