Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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 |
| 7932652 | Wheel assembly with integral electric motor The subject invention provides a wheel assembly (20) having a spindle (26) for attachment to a vehicle along a rotational axis (R). An electric motor (22) is disposed radially about the spindle (26) and includes a stationary stator (34... | 04/26/2011 |
| 7622836 | Wheel assembly with integral electric motor The subject invention provides a wheel assembly (20) having a spindle (26) for attachment to a vehicle along a rotational axis (R). An electric motor (22) is disposed radially about the spindle (26) and includes a stationary stator (34... | 11/24/2009 |
| 7482720 | Rotor and electrical generator A rotor for an electrical generator and a generator incorporating such a rotor, the rotor consisting of a central hub, a radially spaced concentric rim portion with rotor magnetic elements mounted upon it, and a plurality of elongate tension members extending genera... | 01/27/2009 |
| 7466049 | Wheel assembly with electric power generator A wheel assembly includes a carrier and a wheel mounted adjacent to the carrier for rotation relative to the carrier. A first array of magnets is carried by one of the first side of the wheel and the carrier, and a first array of coils is carried by the other of the... | 12/16/2008 |
| 7456534 | Rotating electrical machine A rotating electrical machine is described, wherein the rotor (1) is rotatably journalled to the stator (3) via bearing devices (5, 16) arranged in or adjacent to an air gap between the rotor (1) and the stator (3). ... | 11/25/2008 |
| 7446444 | Generator hub adapter A generator hub adapter is disclosed that is for use on a bicycle generator hub. The generator hub adaptor includes a mounting portion and a contact terminal. The mounting portion has a contact surface dimensioned and arranged to contact an axial outer face of a nut... | 11/04/2008 |
| 7420301 | Wheel assembly with integral electric motor The subject invention provides a wheel assembly (20) having a spindle (26) for attachment to a vehicle along a rotational axis (R). An electric motor (22) is disposed radially about the spindle (26) and includes a stationary stator (34... | 09/02/2008 |
| 7405501 | Electric generator An electric generator is disclosed, which comprises: at least a magnet, each having more than two poles; and at least a claw-pole set, each being composed of an inner claw-pole and an outer claw-pole; wherein, the inner claw-pole and the outer claw-pole are interlac... | 07/29/2008 |
| 7375450 | Hub unit for use in electrically movable wheels and vehicle comprising the hub unit A hub unit for use in electrically assisted bicycles has an improved effect to radiate heat from a stator. A hub (7) has inner teeth (66a) meshable with planetary gears (65) and a fixing support shaft (57) projecting from opposite ... | 05/20/2008 |
| 7352102 | Motor Bearings for rotatably supporting a rotor are disposed on an inner side of a hollow cylindrical portion of the rotor which is disposed in a rotating magnetic field formed by a group of stator windings and on an outer periphery of which magnetic poles for generating ... | 04/01/2008 |
| 7321218 | Bicycle derailer generator A derailler with a set of gears powered by bicycle chain to drive an AC generator. A bridge rectifier to convert AC to DC to charge the battery and to energize the head light and the tail light. A set of switches to control the head light, tail light, and battery. | 01/22/2008 |
| 7309941 | Rotating electric machine and electric vehicle A rotating electric machine according to the present invention includes: a rotation axis extending along a first direction; a first rotor for coupling with the rotation axis to rotate together with the rotation axis; a first stator disposed so as to oppose the first... | 12/18/2007 |
| 7288865 | Bicycle generator hub A bicycle generator hub is mounted to the front fork of a bicycle and includes a hub shaft, a hub shell, bearings, a generator mechanism and first and second magnetic flux recirculation members. The hub shaft is non-rotatably mounted to the front fork. The hub shell... | 10/30/2007 |
| 7249644 | Electric vehicle An electric vehicle is provided with a drum brake unit on a rear wheel rotated by drive force of an electric motor. A first set of fins, for cooling the electric motor and the drum brake unit, are provided between the electric motor and the drum brake unit. Specific... | 07/31/2007 |
| 7245052 | Wheel hub drive A wheel hub drive for a running wheel (10) is described. The drive having a transmission (7), a motor (8) and a brake (11), such that the enveloping circle (9) of the wheel hub drive is determined by the running wheel and the trans... | 07/17/2007 |
| 7242122 | Low speed discoidal electric motor An electric motor has a dimensional arrangement of both the rotor and stator even at high level of torques that eliminates a flip-flop effect, which is typical for conventional step motors. Stator segments (3), on which coils (4) are placed, making up ... | 07/10/2007 |
| 7228928 | In-wheel motor capable of efficiently cooling motor An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pum... | 06/12/2007 |
| 7190099 | Motor Bearings for rotatably supporting a rotor are disposed on an inner side of a hollow cylindrical portion of the rotor which is disposed in a rotating magnetic field formed by a group of stator windings and on an outer periphery of which magnetic poles for generating ... | 03/13/2007 |
| 7169077 | Gear change method for a traction chain comprising a gear change mechanism for each driving wheel A vehicle has at least two driving wheels, each driven by an electric motor M via a gear change mechanism having at least two reduction gears. A sensor senses the rotation speed of the driving wheels. The gear change on the two driving wheels is carried out in an in... | 01/30/2007 |
| 7148582 | Bicycle internal gear shifting hub An internal gear shifting hub includes a motor that assists in gear shifting operations. The internal gear shifting hub is mounted at on rear portion of a bicycle frame and includes a hub shaft, a drive cylinder, a hub shell, a power transmitting mechanism, a shift ... | 12/12/2006 |
| 7148594 | Axial gap electrical machine An axial gap electrical machine employs unique architecture to (1) overcome critical limits in the air gap at high speeds, while maintaining high torque performance at low speeds, while synergistically providing a geometry that withstands meets critical force concen... | 12/12/2006 |
| 7105965 | Electric motor with the rotor connected to the member that is to be rotated In an electric motor having a rotor (2) and, coaxial therewith, a stator (1), both contained in a frame (3), the motor being capable of rotating a member (4) about an axis of rotation coinciding with the axes of the rotor (2) and s... | 09/12/2006 |
| 7086706 | Spinner for bicycle hub A spinner for attachment to the hub of a spoked bicycle wheel generally comprises a body assembly and a contact for contacting a spoke for spinning the spinner about the hub. The body assembly comprises a bearing portion comprised of a plurality of individual bearin... | 08/08/2006 |
| 7084539 | Self-supporting drive module A self-supporting drive module has a support component (1) in which at least one electric motor (2 or 3 or 6) is located. To facilitate the manufacturing process, the electric motor (2 or 3 or 6) is a prefabricated mo... | 08/01/2006 |
| 7078840 | Brushless rotary electric machine having tandem rotary cores A brushless rotary electric machine includes a stator having an annular armature core with first radial teeth at the outer periphery thereof and second radial teeth at the inner periphery thereof and an armature winding wound between the teeth, a rotor having a pair... | 07/18/2006 |
| 7066292 | Pedalling power generation health machine An apparatus of foot pedal working type for health maintenance equipped with a DC generator wherein electric current generated by the DC generator adapted to be driven by foot pedal working force is supplied to an electric device via a DC/DC converter, characterized... | 06/27/2006 |
| 7063391 | Luminescence wheel axle assembly An improved luminescence wheel assembly has a latch base coupled to a plastic optical fiber structure installed on both sides of a wheel axle, such that the improved luminescence wheel assembly is easy to install, easy to remove, and aesthetically pleasing. The impr... | 06/20/2006 |
| 7042128 | Brushless permanent magnet wheel motor with variable axial rotor/stator alignment A brushless permanent magnet electric machine with a fixed radial air gap is operated to a much higher speed than normal maximum speed by the reduction in effective magnet pole strength. Permanent magnets are supported on the inner surface of an axially movable cyli... | 05/09/2006 |
| 7042123 | Bicycle electrical generator hub A bicycle gearshift system is mounted on the rear part of the frame of the bicycle. The bicycle gearshift system includes an electrically powered rear derailleur, a rear hub, a charger part, and a gearshift control part. The electrically powered rear derailleur is m... | 05/09/2006 |
| 7030518 | Position-control stage with onboard linear motor A position-control stage is disclosed which makes it possible to extend largely an angular movement in circular direction for position control, rendering the stage itself compact in construction, allowing to work with high precision in clean environment and further ... | 04/18/2006 |
| 7017694 | Electrically operated power unit, electric vehicle and electric motorcycle An electronically controlled compact motor and planetary transmission system including a compact control unit and wiring for an electrical vehicle or electric motorcycle. The compact motor and integrated transmission system enables the operator to enjoy a powerful, ... | 03/28/2006 |
| 6974144 | Bicycle front end arrangement forming electric power supply system A bicycle front fork is configured to reduce the risk that a poor connection occurs in a lead wire connecting an electricity generating mechanism to an electric device for ensuring reliable delivery of electric power to the electric device. The front fork has first ... | 12/13/2005 |
| 6943478 | Brushless permanent magnet wheel motor with variable axial rotor/stator alignment A brushless permanent magnet electric machine with a fixed radial air gap is operated to a much higher speed than normal maximum speed by the reduction in effective magnet pole strength. Permanent magnets are supported on the inner surface of an axially movable cyli... | 09/13/2005 |
| 6923552 | Wind power driving auxiliary lamp A wind power driving auxiliary lamp comprises a seat, a generator, a transparent cover and a circuit device. The seat has two supporting frames. The generator has a blade set and a small power generator firmly secured to a blade groove of the blade set. The blade se... | 08/02/2005 |
| 6924569 | Bicycle hub generator A hub generator for a bicycle having a hub shaft, a hub body, an electricity generating mechanism, a wiring unit, a wiring passage, and a wiring draw-out part is provided. Both ends of the hub shaft are adapted to be mounted in a non-rotational manner to a frame of ... | 08/02/2005 |
| 6922004 | Axial flux motor assembly A power unit assembly which has a pair of mirrored axial flux electric motors having a common axis of rotation, each axial flux motor including a rotor disposed on a rotor shaft and at least one stator disposed in operative relationship to said rotor. A common end p... | 07/26/2005 |
| 6864607 | Driving apparatus for vehicle A driving apparatus has a differential gear unit and an electric motor and drives drive wheels of a vehicle. The differential gear unit includes a differential case provided with a final driven gear, and two axle shafts respectively coupled to the drive wheels. A ho... | 03/08/2005 |
| 6833642 | Automatic electric power generating device for wheels An automatic electric power generating device for wheels includes a wheel hub and a housing. The wheel hub is provided with a first magnetic pole set and a second magnetic element. The first magnetic pole set has a spool, and left and right magnetic poles. The spool... | 12/21/2004 |
| 6822357 | Luminous device capable of automatically generating power A luminous device capable of automatically generating power includes a set of induction coils with one end connecting to a luminous element and placed inside a light conductor which is fastened onto a steel wire of a wheel via a fastening structure; one or more than... | 11/23/2004 |
| 6806608 | Motor-driven bicycle and brushless motor thereof A bicycle driven by a brushless motor. The vehicle has at least one wheel with a plurality of ferromagnetic steel elements annularly disposed on the rim. Three C-shaped electromagnets are connected to the body of the vehicle to alternatively attract the steel elemen... | 10/19/2004 |
