"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
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 |
| 8058849 | Vehicle drive mechanism A vehicle drive mechanism includes a power transmission mechanism which has a rotary electric motor and a gear mechanism for transmitting mechanical power from the rotary electric motor to a drive shaft disposed coaxially with an output shaft of the rotary electric ... | 11/15/2011 |
| 7397222 | On-line testable solid state reversing DC motor starter A solid state reversing DC motor starter that is testable on-line and satisfies the requirements for nuclear safety grade equipment. The motor starter employs a bridge of solid state switches which connect the polarity of the motor winding to conform to the desired ... | 07/08/2008 |
| 7307404 | Controller for a permanent magnet generator and a generator in combination with such a controller A generator controller for controlling a permanent magnet generator where each phase of the generator is connectable to a DC link via electrically controllable switches, the controller characterised by a data processor adapted to receive a measurement of generator c... | 12/11/2007 |
| 7276806 | System and method for boosting torque output of a drive train An engine speed detector detects an engine speed of an engine having a baseline torque versus engine speed curve. A torque sensor detects an engine torque of the engine. A data processor determines if the detected engine speed is within a first speed range and if th... | 10/02/2007 |
| 7235891 | Power system having generator driven by engine An apparatus for controlling the operation of power conditioners (10) for supplying the generated power to an external power system such as a commercial power system, in which power conditioners (10) are interconnected to an external power system, the ... | 06/26/2007 |
| 7227340 | Alternator rectifier with coil-sensor controlled MOSFETs A switching circuit for an electric machine is provided. The switching circuit includes switches for energizing the phase windings of the machine and sensors for driving the state of the switches. The switches are voltage-controlled devices and the sensors are coils... | 06/05/2007 |
| 7212407 | Electrical power converter method and system employing multiple output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 05/01/2007 |
| 7187568 | Power converter having improved terminal structure A terminal structure for power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat fr... | 03/06/2007 |
| 7187548 | Power converter having improved fluid cooling A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support, which may be controlled in a closed-loop manner. Interfacing between circuits, circuit mounting... | 03/06/2007 |
| 7177153 | Vehicle drive module having improved cooling configuration An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as bet... | 02/13/2007 |
| 7142434 | Vehicle drive module having improved EMI shielding EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in remov... | 11/28/2006 |
| 7095612 | Cooled electrical terminal assembly and device incorporating same A terminal structure provides interfacing with power electronics circuitry and external circuitry. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the terminal structure and the circuits through fluid ... | 08/22/2006 |
| 7091690 | Power conversion device A power conversion device is constituted by: a power converter that receives AC power and uses this to drive an AC motor; a control section for controlling an inverter section of the power converter; a voltage detection section that detects the voltage of the AC pow... | 08/15/2006 |
| 7075271 | Power controlling apparatus with power converting circuit The invention provides an apparatus for bi-directional power conversion between a DC circuit and an AC circuit, which inexpensively and simply suppresses generation losses of elements and reduces heat generation, wherein a voltage obtained by dividing the U-phase vo... | 07/11/2006 |
| 7061775 | Power converter having improved EMI shielding EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits th... | 06/13/2006 |
| 7059436 | Operating load control for fuel cell power system in fuel cell vehicle A fuel cell vehicle drives a motor (9) with electric power from a fuel cell power system (100) comprising a fuel cell (4) which generates electricity using hydrogen and oxygen. A controller (10) calculates an electrical load demand requir... | 06/13/2006 |
| 7032695 | Vehicle drive module having improved terminal design A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in re... | 04/25/2006 |
| 7028795 | Moving object with fuel cells incorporated therein and method of controlling the same In a hybrid vehicle with fuel cells and an engine mounted thereon as energy output sources, the technique of the present invention adequately changes a working energy output source according to a driving state of the hybrid vehicle. The hybrid vehicle has the engine... | 04/18/2006 |
| 7016192 | Electrical power converter method and system employing multiple-output converters A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 03/21/2006 |
| 6972957 | Modular power converter having fluid cooled support A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 12/06/2005 |
| 6969922 | Transformerless, load adaptive speed controller The invention in one embodiment is an improved variable speed engine/generator set with an integrated power conditioning system and control method including load shedding to generate high quality AC power with improved fuel efficiency and reduced emissions. The vari... | 11/29/2005 |
| 6965514 | Fluid cooled vehicle drive module An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a... | 11/15/2005 |
| 6949902 | Controller of rotating electric machine for vehicle A controller of a rotating electric machine for a vehicle has a magnetic field electric current command arithmetic device for commanding a magnetic field electric current by the command of a torque and electric power command arithmetic device, an electric power conv... | 09/27/2005 |
| 6940715 | Modular power converter having fluid cooled support A support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EMI/RFI ... | 09/06/2005 |
| 6927524 | Rotary electric motor having separate control modules for respective stator electromagnets A rotary brushless electric motor is formed within a cylindrical rotor housing structure that surrounds an annular stator ring. The stator is formed of a plurality of individual power modules and corresponding core segments, each module including electrical control ... | 08/09/2005 |
| 6909607 | Thermally matched fluid cooled power converter A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as between component layers and between t... | 06/21/2005 |
| 6879053 | Transformerless, load adaptive speed controller The invention in the simplest form is an improved variable speed engine/generator set with an integrated power conditioning system and control method, used to generate high quality AC power with optimum fuel efficiency and reduced emissions. The variable speed gener... | 04/12/2005 |
| 6612386 | Apparatus and method for controlling a hybrid vehicle A propulsion system for use in a hybrid vehicle, the propulsion system includes an internal combustion engine, an electric motor/generator operatively coupled to the internal combustion engine, an electric storage medium, and a propulsion system controlle... | 09/02/2003 |
| 6433450 | Power generating system with physical energy to enhance output A power generating system. The system enhances output, in which a motor of about 700 W to 750 W produces horsepower to rotate a power generating unit, causing the power generating unit to produce electricity, and a transmission device is coupled between t... | 08/13/2002 |
| 6211577 | Jump start circuit for a vehicle battery A jump start circuit (26) for electrical connection between a battery (12) of a motor vehicle and jump start terminals (22,24) in the motor vehicle, the jump start circuit comprising a switch (28) for positioning in an electrical line (18) between one (22... | 04/03/2001 |
| 6118238 | Motor starting apparatus for an engine driven generator A conventional motor controlling circuit is adapted to control an inverter that drives a permanent magnet generator as a motor to spin an engine to a speed sufficient to permit the engine to start. The commutation frequency is adjusted as a function of sp... | 09/12/2000 |
| 5939848 | Control system for hybrid vehicle A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle, and electric energy storage unit for supplying electric energy to the electric motor. The control... | 08/17/1999 |
| 5808448 | Method and apparatus for operating an electric vehicle having a hybrid battery The invention provides driving method and apparatus for an electric vehicle having a motor for driving the vehicle, a dc electric power source, a control device including a signal generating means for generating a signal to control rotation of the motor, ... | 09/15/1998 |
| 5804948 | System for zero emission generation of electricity A zero emission generation system uses a direct current electric motor driving an electric generator to provide inverted alternating current to a load. The motor draws its electrical energy from two deep cycle direct current batteries, one or the other of... | 09/08/1998 |
| 5686818 | Power system for a electric vehicle The power system for a electric vehicle supplying electrical energy to the batteries and motors, and to take the power load off the batteries, with the rear wheels to drive couplers and shafts and to drive the alternators and generators to supply a consta... | 11/11/1997 |
| 5637987 | Regenerative vehicle launch A hybrid electric vehicle includes an internal combustion engine, a multi-speed automatic transmission, and an electric machine operable in a motoring mode and a generating mode. A compound planetary gear set operatively couples the engine, transmission a... | 06/10/1997 |
| 5621304 | Electric generation control system for hybrid vehicle When a target generated output established for a generator by a target generated output setting unit depending on an operating condition of a hybrid vehicle varies, an intake air control valve control unit starts varying the opening of an intake air contr... | 04/15/1997 |
| 5614809 | Electric generation control system for hybrid vehicle When the remaining capacity of a battery on a hybrid vehicle is smaller than a threshold value or the battery is unable to output the amount of electric energy required to propel the hybrid vehicle with a propulsive electric motor, the engine is started b... | 03/25/1997 |
| 5608308 | Electric generation control system for hybrid vehicle The opening of the intake air control valve of an engine which actuates a generator on a hybrid vehicle is basically controlled by an intake air control valve control assembly to cause the engine to produce a power output corresponding to a target generat... | 03/04/1997 |
| 4058759 | Power supply for computer peripheral device In a computer peripheral device having a controllable element and control means coupled to the controllable element and operative in response to a power supply voltage of a predetermined level for controlling the controllable element, an improved power su... | 11/15/1977 |