Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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 |
| 8026647 | Generator-brake integration type rotating machine A generator-brake integration type rotating machine comprises an inertia disk coupled to a shaft to rotate; a rotor ring rotating around the shaft inside the inertia disk and having magnets mounted to a circumferential outer surface thereof; and a laminated yoke pos... | 09/27/2011 |
| 7592727 | Quiet load for motor testing A device for imposing a torque load upon rotating machinery comprises a rotary unit and plural electromagnetic units. The rotary unit includes a shaft and conductive disks discretely fastened thereto. Each electromagnetic unit includes a bracket-shaped magnetic core... | 09/22/2009 |
| 7354216 | Grease seal cup to retain lubrication for life extension in existing splined joint A grease seal cup for a splined joint between a drive shaft and a driven shaft comprises a cylindrical portion adapted to form a seal with the outer surface of the drive shaft and a seal with a sealing member, such as a spanner nut, of the driven shaft. The grease s... | 04/08/2008 |
| 7339294 | Vehicular starting and charging rotary electric machine A vehicular starting and charging rotary electric machine includes a rotor, a stator, brackets, a brush, and a rotation detection sensor. The rotor has a field winding. The stator has a stator winding. The brackets supports the rotor and the stator. One end of the b... | 03/04/2008 |
| 7332844 | Alternator with removable brush block and method of changing brushes in an alternator An alternator comprises a housing including a first portion, and a second portion having a plurality of electrical connectors and having an aperture; a stator supported in the first portion of the housing; a rotor supported for rotation relative to the stator and co... | 02/19/2008 |
| 7312547 | Alternator with replaceable resistor, and method of changing the maximum output current of an alternator An alternator comprises a housing including a first portion, and a second portion having a plurality of electrical connectors and having an aperture; a stator supported in the first portion of the housing; a rotor supported for rotation relative to the stator and co... | 12/25/2007 |
| 7308904 | Electric gear motor drive for switching valve Electric drive for a switching valve, the switching valve having such a drive, and a regenerative thermal oxidizer including the switching valve and drive system. The electric drive system allows for the starting and stopping of the rotation of a rotary valve with a... | 12/18/2007 |
| 7301335 | Apparatus and method for eddy-current magnetic scanning a surface to detect sub-surface cracks around a boundary An RFEC excitation unit and sensor apparatus and method that facilitate detection of cracks or other anomalies within or under a surface and immediately next to an expected structure (such as a rivet) that would otherwise cause a signal change preventing detection o... | 11/27/2007 |
| 7294947 | Apparatus for transferring torque magnetically An apparatus for transferring torque magnetically with a primary rotary member and a secondary rotary member. The primary rotary member has permanent magnets, the secondary rotary member with electro-conductive materials. The secondary rotary member also having magn... | 11/13/2007 |
| 7281613 | Interface disc for a torque and/or rotational control apparatus A friction disc (16) for a torque and/or rotational control apparatus includes elongated and shortened fins (42, 43) upstanding between and equally circumferentially spaced intermediate first and second component discs (40, 41). The fins (42,... | 10/16/2007 |
| 7276833 | Electromagnetic retarder system and method An electromagnetic retarder system is disclosed. In one embodiment, the retarder system comprises: a shaft; a coil statically disposed on the shaft and having a hollow cylindrical shape; a yoke statically disposed on the shaft, the yoke having a first cylindrical su... | 10/02/2007 |
| 7273135 | Low cost magnetic brakes and motion control devices manufactured from conductive loaded resin-based materials Magnetic brake components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host.... | 09/25/2007 |
| 7259485 | Magnetic brake for window covering powered by DC motor A braking magnet is attached to the housing of a motor of a motorized component such as a window covering. With this structure the motor is braked from turning under the weight of the window covering when deenergized. ... | 08/21/2007 |
| 7243058 | Method and circuit for operating a voice coil actuator of a mass data storage device A circuit (90) and method are presented to accurately determine a BEMF voltage of a VCM coil (20) after termination of a driving current in a first current direction in the coil (20). The circuit includes a circuit for activating selected VCM co... | 07/10/2007 |
| 7197946 | Torque measuring device for electric motors and method to measure the torque of an electric motor A torque measuring device for electric motors having a rotor and a stator is proposed, said apparatus comprising a holding apparatus to hold the stator non-rotatably, an eddy current brake device which can be used to brake the rotor and a torque sensor connected to ... | 04/03/2007 |
| 7124869 | Multi-plate clutch, particularly for a double clutch transmission A multi-plate clutch, particularly for a dual clutch transmission, has at least one clutch housing alternately holds externally and internally toothed plate disks, a hub arranged at the end face on the clutch housing. The hub has a central opening for receiving a ge... | 10/24/2006 |
| 7086515 | Clutch and synchronizer having permanent magnet actuators A friction clutch pack utilizes permanent magnets and induction rings to actuate a ball ramp actuator which come in turn, engages the friction clutch pack to transfer torque between drive and driven members in, for example, a motor vehicle transfer case. The permane... | 08/08/2006 |
| 7057321 | Eddy current deceleration device An eddy current deceleration device comprises: a rotor mounted on a rotary shaft; a first magnet ring arranged facing this rotor and including permanent magnets that are arranged at prescribed intervals in the circumferential direction and such that the poles thereo... | 06/06/2006 |
| 7053512 | Ventilation device with electromagnetic coupling Ventilation devices, in particular for electric motor drives regularly comprise a fan wheel (1), which is driven by a shaft via an electromagnetic induction coupling. In order to reduce the complexity of manufacture, a stack of magnetic sheets (2) is c... | 05/30/2006 |
| 7002310 | Piezo-based encoder with magnetic brake for powered window covering The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor.... | 02/21/2006 |
| 7001312 | Support device, with damping, for a mobile part of an exercise apparatus In an exercise apparatus comprising a fixed support member (3) and a moving part (2) which can perform movements correlated to the exchange of forces between a user and the apparatus, a support device (1) comprises: elastic supporting means (... | 02/21/2006 |
| 6975053 | Rotator driving device, image forming apparatus using the rotator driving device, and method of driving rotator Rotational force of a driving motor is transferred to a photosensitive drum via a planetary-rolle reduction device, so that the photosensitive drum is rotated. A speed detector set on the shaft of the photosensitive drum detects the rotational speed of the photosens... | 12/13/2005 |
| 6948597 | Eddy current deceleration device An eddy current deceleration device includes a rotor mounted on a rotary shaft; a first magnet ring arranged facing this rotor and including permanent magnets that are arranged at prescribed intervals in the circumferential direction and such that the poles thereof ... | 09/27/2005 |
| 6945752 | Azimuthal driving system for wind turbines Wind power installations generally have an active drive for wind direction tracking. The active drive rotates the machine housing of the wind power installation in such a way that the rotor blades of the rotor are oriented in the direction of the wind. Multiple azim... | 09/20/2005 |
| 6933647 | Squirrel-cage rotor for an asynchronous induction motor The novel squirrel-cage rotor should enable a power output of the motor of more than 1 MW even at rotation speeds of more than 10,000 rpm. To this end, the conductor bars (4) of the squirrel cage are soldered into slots (8, 9) arranged on the periphery... | 08/23/2005 |
| 6927502 | Three-phase asynchronous motor driven azimuthal drive for wind power installations Wind power installations generally have an active drive for wind direction tracking. The active drive rotates the machine housing of the wind power installation in such a way that the rotor blades of the rotor are oriented in the direction of the wind. That drive wh... | 08/09/2005 |
| 6900569 | Increased torque in retarder brake system through use of conductive layer Electromagnetic retarder brake systems, and methods for their use, are provided utilizing specified thickness conductive layers. The specified thickness of the conductive layer in each system is determined to obtain a certain desired torque at a certain desired low ... | 05/31/2005 |
| 6841909 | Magnetic drive system The magnetic drive system includes a motor and motor shaft and a motor assembly, the motor assembly including a cylinder of copper. A machine assembly for driving a machine includes a permanent magnet assembly. The motor assembly and the machine assembly are support... | 01/11/2005 |
| 6838796 | Two-speed rotational control apparatus with eddy current drive A rotational control apparatus includes a first rotatable assembly and a second rotatable assembly. The first assembly is rotatably mounted to a first support mount. The second assembly is rotatably mounted to the first assembly and is axially moveable relative to t... | 01/04/2005 |
| 6820728 | Integrated retarder and accessory device The invention comprises a retarder system for use with road vehicles. The retarder system discloses an improved vehicular retarder which incorporates the use of a PMG Gear ratio which permits use of a permanent magnet generator on a secondary shaft that is coupled b... | 11/23/2004 |
| 6756870 | Composite magnet of electromagnet and permanent magnet, and eddy current retarder A composite magnet has an iron core, a coil around the iron core, and a permanent magnet in the iron core. A first eddy current retarder includes a brake drum with a rotatable shaft, and a stationary magnet unit inside the inner peripheral surface of the brake drum ... | 06/29/2004 |
| 6738340 | Device for reducing the radial and axial play of a motor shaft in a deck for playing information discs The invention relates to a device in a deck for playing information discs (2), which preferably have been provided or can be provided with digital information, the information disc (2) being rotated, in the operating condition, about its center by a dr... | 05/18/2004 |
| 6700264 | Pump driving system of induction type An induction pump driving system has a motor shaft, a pump shaft, a first magnetization body, a second magnetization body, an electrical coil, a yoke, and a nonmagnetically electrical-conducting body. The first magnetization body is mounted on the motor s... | 03/02/2004 |
| 6700265 | Eddy current retarder An eddy current retarder having a rotor part of the retarder with symmetry of revolution about the axis of the engine shaft so that it has a peripheral face facing a peripheral face of the stator part, the inductor of the retarder having at least one elec... | 03/02/2004 |
| 6680555 | Electromagnetic hysteresis unit The invention is based on an electromagnetic hysteresis unit (1, 23) with magnetic north pole (4) which are arranged to alternate with magnetic south pole (5) on a magnet body (2, 3) in a peripheral direction (15) about an axis of rotation (14) at a dista... | 01/20/2004 |
| 6661144 | Electromotive drive The aim is to improve the cooling of a self-ventilated electric motor (1). To this end, an electromagnetic speed limiting and governing device is provided between the motor shaft (3) and the fan wheel (2), the fan wheel, which is driven via an electromagn... | 12/09/2003 |
| 6628029 | Drive for a roller shutter winding tube A control device for rotating a tube supporting a roller member to be wound onto or unwound from the tube has at least one electric motor housed in the tube and drive mechanism for transmitting the motion from the motor to the supporting tube. The motor i... | 09/30/2003 |
| 6548929 | Eddy current fan drive An eddy current fan drive cooling system is operable in a vehicle having a sheave rotating at a speed related to an engine speed. A driving assembly of the cooling system is attached to the sheave. A plurality of poles are exposed around an outer perimete... | 04/15/2003 |
| 6459184 | Ergometer loading device with large braking force An ergometer loading device includes a rotor and a stator which is provided so as to be coaxial with the rotor and have a prescribed gap from the rotor. The stator is provided with a core and a plurality of exciting coils. The rotor includes a ferromagnet... | 10/01/2002 |
| 6318496 | Steering booster system for a motor vehicle A steering booster system for a motor vehicle has an electronic control unit which senses by way of force or torque sensors the amount and direction of forces and torques applied to a manual steering wheel and correspondingly controls, via a transmission ... | 11/20/2001 |
