Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 7350603 | Hybrid drive unit and vehicle mounted therewith A hybrid drive unit includes a hybrid mechanism having at least one electric motor and a transfer that distributes driving force to front and rear wheels. The electric motor and the transfer are housed in a tubular shaped transmission case that extends in the front ... | 04/01/2008 |
| 7343994 | Working machine A working machine has a machine body, a working unit attached to the machine body, an internal combustion engine for driving the working unit, a traveling unit mounted on the machine body 11 for displacing the working unit over a ground surface to perform a w... | 03/18/2008 |
| 7191855 | Rotary engine with improved hybrid features A hybrid engine including an electric motor, a rotary internal combustion engine, and an electric generator incorporating a clutch and translator unit to drive the generator at a ratio greater than 1:1 during vehicle slowing and at a 1:1 ratio rate at other times in... | 03/20/2007 |
| 7072751 | Controller for electric automobile A control device of an electric car in which any two of control devices fixed to the corresponding electric motors send signals to each other and send and receive control information by taking a bypass route when any one of transmission lines malfunctions is provide... | 07/04/2006 |
| 7059986 | Electrically variable transmission A powertrain having a fuel cell prime mover, an electronic control unit, two motor/generator units, two planetary gearsets, and a plurality of torque-transmitting mechanisms is operable to provide three ranges of operation. During one range of operation, the power t... | 06/13/2006 |
| 7036616 | Hydrogen-electric hybrid vehicle construction An electric vehicle which carries at least two passengers, which has at least three wheels, said passengers sitting in tandem and most of the batteries or fuel cell systems are located on the sides of the passengers. The vehicle has an aerodynamically shaped body wi... | 05/02/2006 |
| 6704622 | Vehicle stability control Stability is an important factor in vehicle safety. Yaw rate error can be used to improve stability. Yaw rate is measured through a yaw rate sensor. Desired yaw rate can be determined from vehicle conditions and driver input. The yaw rate error is calcula... | 03/09/2004 |
| 6701229 | Vehicle drive system A vehicle drive system includes a power generation device (150) which generates power using fuel, a battery (112) which stores the power generated by the power generation device, and a rotating machine (113) which drives the vehicle using the power suppli... | 03/02/2004 |
| 6692403 | Series hybrid vehicle capable of operating without a battery A series hybrid vehicle comprising an engine driving an alternator, the engine having a power available at the output shaft of the engine, at least one electric traction motor connected to the alternator by an electric line and an inverter, the inverter a... | 02/17/2004 |
| 6666103 | Torque transmission device A first helical gear (40) is supported by a first rotation shaft (4), and a second helical gear (13) is supported by a second rotation shaft (14). A rotation body (6, 7) comprising a third helical gear (7) which meshes with the first helical gear (40), an... | 12/23/2003 |
| 6666022 | Drive device of working machine A drive apparatus comprises an engine, a hydraulic pump, an electric motor concurrently serving as a generator, a battery, a first control device that charges the battery with the electric power generated by the electric motor concurrently serving as a ge... | 12/23/2003 |
| 6664651 | Engine on idle arbitration for a hybrid electric vehicle This invention is a method and system for determining whether the engine should be running in a Hybrid Electric Vehicle during vehicle idle conditions. Specifically, a controller determines if the vehicle is in idle and if engine operation is necessary. T... | 12/16/2003 |
| 6661108 | Hybrid drive device In a hybrid drive device which drives an electrical motor with electrical power from a storage device and/or from a generator driven by an engine, a secondary battery is generally used as the storage device. However, the storage device must be replaced at... | 12/09/2003 |
| 6662096 | Vehicle drive system and vehicle controlling method A minimum needed power is computed by adding a reserve drive power to a target drive power, a best fuel cost-performance rotation speed is computed based on the target drive power and the best fuel cost-performance power characteristics of an engine (1), ... | 12/09/2003 |
| 6661109 | Electric generating system for automobiles and its control method The present invention provides a vehicle driving apparatus capable of being mounted easily even in a narrow space such as under-floor of the vehicle. The vehicle driving apparatus comprises a first and a second generators driven by an engine for driving f... | 12/09/2003 |
| 6651759 | Hybrid electric vehicle A hybrid electric propulsion system for powering a vehicle using a natural fuel engine and an electric motor. The hybrid electric vehicle is comprised of a drive train; an electric motor for driving the drive train; an auxiliary power unit (APU); an elect... | 11/25/2003 |
| 6622804 | Hybrid electric vehicle and method of selectively operating the hybrid electric vehicle A series type hybrid electric vehicle that controls an internal combustion engine, generator, and electric motor for reducing the load applied to the internal combustion engine when the internal combustion engine is restarted, lowers the thermal stresses ... | 09/23/2003 |
| 6624527 | Method and apparatus for reducing engine cycling in hybrid electric vehicle A method and system that responds to non-propulsive needs of a hybrid vehicle by setting at least two thresholds related to engine support: one threshold to keep a running engine ON and a another threshold to turn the engine ON from an OFF state.... | 09/23/2003 |
| 6625525 | Vehicle drive system and controlling method thereof A controller (10, 11, 12) computes a virtual generated power, this being the power generated by a generator (2) when an engine (1) and the generator (2) are controlled so that the power generated by the generator (2) coincides with the power consumption o... | 09/23/2003 |
| 6242873 | Method and apparatus for adaptive hybrid vehicle control A method and apparatus for controlling a hybrid vehicle having an auxiliary power unit, at least one energy storage device, at least one electric drive motor for traction, and a controller with associated memory. The method initially involves the steps of... | 06/05/2001 |
| 6239502 | Phase change assisted heat sink In an electric vehicle, the traction motor is driven from a battery by way of a controllable electric power switching arrangement. In normal operation of the switches of the switching arrangement, the power losses or heating of the switches depends upon t... | 05/29/2001 |
| 5441122 | Hybrid car and an operating method therefor A hybrid car comprises an electric motor for driving the vehicle, an internal combustion engine for power generation, and auxiliary machineries such as an air conditioner. If an air conditioner operating switch is turned on while the hybrid car is running... | 08/15/1995 |
| 5402046 | Vehicle drive system The vehicle drive system has an asynchronous motor mechanically coupled to a wheel of the vehicle, a rechargeable accumulator, a first converter interposed between the rechargeable accumulator and the motor and arranged so as to regulate the electric powe... | 03/28/1995 |
| 5285862 | Power supply system for hybrid vehicles When voltage at the main battery 10 is lowered, an EV-ECU 36 instructs a starting motor 24 to rotate to actuate an engine 26 for the initiation of power generation. At that time, the starting motor receives electric current mainly from a power capacitor 3... | 02/15/1994 |
| 5283470 | Hybrid drive system with regeneration for motor vehicles and the like with a brushless motor A motor vehicle drive system includes a brushless motor driven by a battery and directly coupled to the vehicle wheels for providing primary motive power. During braking, the motor acts as a generator for recharging the battery. Preferably the recharging ... | 02/01/1994 |
| 5280223 | Control system for an electrically propelled traction vehicle A control system for an electrical propulsion system for a large wheeled vehicle adapted to haul a payload, the vehicle having an internal combustion engine and an electric generating means driven by the engine. The control system measures selected parame... | 01/18/1994 |
| 4798257 | Energy recovery apparatus for turbo compound engine An energy recovery apparatus for a turbo compound engine is provided having an exhaust turbine with a first rotary machine in an exhaust pipe of an internal combustion engine; a second rotary machine mounted on a wheel axle of a motor vehicle which is dri... | 01/17/1989 |
| 4756377 | Energy recovery apparatus for turbo compound engine An energy recovery apparatus for a turbo compound engine is provided having: an exhaust turbine with a first rotary machine in an exhaust pipe of an internal combustion engine; a second rotary machine mounted on a wheel axle of a motor vehicle, which is d... | 07/12/1988 |
| 4593779 | Combination internal combustion and electrical drive vehicles A combination internal combustion and electric drive vehicle is provided having a frame, a battery suspended from the frame between two parallel spaced axles carrying supporting wheels, at least one elective drive motor driving at least one wheel, an inte... | 06/10/1986 |
| 4444285 | Electro-mechanical propulsion system An Electro-Mechanical Propulsion System for vehicles, wherein the prime mover 10, such as an internal combustion engine, drives an alternating voltage generator 20 through a first shaft 30 at a constant RPM controlled by a speed governor 40; and wherein t... | 04/24/1984 |
| 4347907 | All-electric A.C. tractor An electronic differential speed control circuit for driving the inboard and outboard A.C. wheel motors at different relative speeds depending upon the steering angle during a turn. An electrical circuit for sensing the torque of the tractor's wheel motor... | 09/07/1982 |
| 4325451 | Electric power plant for vehicles In a wheeled vehicle such as a dump truck propelled by electric motors built into the respective wheels, a power plant is provided on a removable base for the generation of electric energy to be fed to the motors. The power plant comprises an electric gen... | 04/20/1982 |
| 4318449 | Electric drive propulsion system for vehicles A combination of a combustion engine connected to operate intermittently at its point of peak efficiency for effecting recharge of an electric power drive system provides a vehicle drive system capable of 100 miles per gallon.... | 03/09/1982 |
| 4292531 | Electrical propulsion process and system for a traction vehicle with an on-board source of power A self-propelled traction vehicle equipped with an a-c traction motor energized by the a-c output of a controlled current inverter is propelled by a process comprising the steps of providing a traction alternator on-board the vehicle, rotating the rotor o... | 09/29/1981 |
| 4254843 | Electrically powered vehicle An electrically powered vehicle having a bank of batteries supplying electricity to an electric motor driving wheels of the vehicle includes a whirl ventilator system, a clutch system and an automatically operated, engine-generator unit for recharging the... | 03/10/1981 |
| 4199037 | Electric automobile An electrically-powered vehicle having a combination automobile frame and trailer, which are driven by a pair of electric motors located on the automobile frame. A battery is also located on the automobile frame, and a generator, along with a gas turbine ... | 04/22/1980 |
| 4196785 | All-electric A.C. tractor An electronic differential speed control circuit for driving the inboard and outboard A.C. wheel motors at different relative speeds depending upon the steering angle during a turn. An electrical circuit for sensing the torque of the tractor's wheel motor... | 04/08/1980 |
| 4187436 | Device for regulating the source of electric energy on a hybrid electric vehicle Device for regulating the source of electric energy on a hybrid electric vehicle comprising at least an electric motor for driving the driving wheels of the vehicle and supplied with current by said source of energy and a generating set comprising a heat ... | 02/05/1980 |
| 4143280 | Control system for a tertiary winding self-excited generator A control system for a self-excited alternator which includes an auxiliary winding adapted to supply excitation to the alternator field winding incorporates a circuit for supplementing field excitation when the available energy from the auxiliary winding ... | 03/06/1979 |
| 4126791 | Process for driving a load, such as a vehicle, and motor unit for carrying out said process This invention concerns a process and a motor unit for driving a load such as an automotive or similar vehicle, which can move at least intermittently by momentum, once it has been set in motion by the motor unit. The motor unit comprises at least two ele... | 11/21/1978 |
