Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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 |
| 7426972 | Control device for vehicular drive system A control device for a vehicular drive system including (a) a differential mechanism operable to distribute an output of an engine (8) to a first electric motor and a power transmitting member, (b) a second electric motor disposed in a power transmitting path... | 09/23/2008 |
| 7328096 | Driving force switching control apparatus A driving force switching control apparatus in a vehicle which runs by two-wheel drive or four-wheel drive in accordance with the running state. The apparatus includes a device for determining whether the vehicle runs at a constant speed; and a device for determinin... | 02/05/2008 |
| 7308960 | Vehicle drive train unit and vehicle drive train system A vehicle drive train and drive train system is provided to simplify wire harness including power cables and reduce power loss in an engine-motor hybrid vehicle drive train system. The drive train and system includes some wheels driven by an engine, and other wheels... | 12/18/2007 |
| 7243011 | Hybrid transmission launch algorithm A launch system for a hybrid vehicle includes a pump, an electronic throttle, a sensor, and a hybrid control module. The pump is driven by an internal combustion engine and provides pressurized fluid to a transmission. The electronic throttle selectively adjusts air... | 07/10/2007 |
| 7174978 | Hybrid drive unit, and front-engine/rear-drive type automobile having the hybrid drive unit mounted thereon A hybrid drive unit including a first motor, a first planetary gear and a second motor, wherein the first planetary gear distributes and transmits a drive force transmitted from an input shaft to the first motor and an output shaft, a power output from the output sh... | 02/13/2007 |
| 6702709 | Drivetrain for hybrid motor vehicle A hybrid transmission includes a multi-speed planetary gearbox, an automated shift system, and an electric motor/generator. The electric motor is operably controlled to drive the gearbox to establish an electric drive mode. The electric mode is further op... | 03/09/2004 |
| 6704627 | Drive force distribution apparatus for hybrid vehicle A drive force distribution apparatus for a hybrid vehicle having an engine for driving a pair of first drive wheels and an electric motor for driving a pair of second drive wheels. The drive force distribution apparatus includes a first clutch, a second c... | 03/09/2004 |
| 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 |
| 6696812 | Control apparatus for electric motor A control apparatus controls a voltage applied to an AC motor from a power converter with a PWM signal, and has two different magnetic pole position-estimating units which estimate a rotor magnetic pole position of the AC motor, and has a switching unit w... | 02/24/2004 |
| 6691809 | Power output apparatus, motor vehicle including power output apparatus and control methods thereof At a time of backward movement, a ring gear shaft, and thus a front axle, is disconnected from a planetary gear by a clutch, and a carrier and a ring gear, and thus, a crank shaft and a sun gear shaft, are connected to each other by the clutch, whereby a ... | 02/17/2004 |
| 6684970 | Hybrid system for vehicle with 4WD start mode A hybrid system or a control method for a vehicle having a first set of road wheels and a second set of road wheels is disclosed. The system comprises an engine controller for receiving a torque request for an engine driving torque and combining an idle s... | 02/03/2004 |
| 6679799 | On-demand two-speed transfer case for four-wheel drive hybrid vehicle A hybrid transfer case includes a mainshaft, front and rear output shafts, an electric motor/generator connected to the mainshaft, and an input clutch for selectively coupling the transmission to the mainshaft. The transfer case further includes a planeta... | 01/20/2004 |
| 6672415 | 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, a technique is employed that adequately changes a working energy output source according to a driving state of the hybrid vehicle. The hybrid vehicle has the engin... | 01/06/2004 |
| 6659212 | Hybrid drive for a motor vehicle with an exhaust gas turbocharger In a hybrid drive for a vehicle, an exhaust gas turbocharger is coupled to an electrical machine. The machine is actuated by an electronic control device to limit the supercharge pressure of the exhaust gas turbocharger.... | 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 |
| 6648785 | Transfer case for hybrid vehicle A hybrid drive system for a four-wheel drive system arranged to supply motive power to a primary output shaft of a transfer case from an internal combustion engine and to a secondary output shaft from an electric motor/generator. The transfer case is comp... | 11/18/2003 |
| 6646419 | State of charge algorithm for lead-acid battery in a hybrid electric vehicle A method and apparatus for determining the state of charge of a lead-acid battery. The present invention includes steps to determine a current-based state of charge while accounting for such factors as current, temperature, charge efficiency, parasitic lo... | 11/11/2003 |
| 6638195 | Hybrid vehicle system A hybrid vehicle system is provided with an internal combustion engine driving one set of wheels and an electric motor connected to the other wheels via an active clutch system. A power take-off unit is provided for selectively providing driving torque fr... | 10/28/2003 |
| 6632155 | Drive system The invention relates to a drive system, especially for motor vehicles, with a first power source (10), especially an internal combustion engine, and a second power source (20), especially an electric motor. The power sources acts upon a gearbox (14) that... | 10/14/2003 |
| 6615940 | Control system for vehicle having fuel cell A control system of a vehicle including a fuel cell and an electric motor that drives drive wheels of the vehicle with electric energy generated by the fuel cell is provided wherein a traction controller controls the output of the drive wheels so as to se... | 09/09/2003 |
| 6617703 | Auxiliary drive and automobile equipped with the same There are included a first motor-generator; speed change device disposed between an engine and a first wheel drive shaft; demanded braking force detection device for detecting braking force demanded by the driver; engine braking force calculation device f... | 09/09/2003 |
| 6617704 | Hybrid vehicle control apparatus A hybrid vehicle control apparatus controls an engine that rotates at least one first wheel and a mechanically independent electric motor that rotates at least one second wheel. The hybrid vehicle control apparatus stabilizes the vehicle driving performan... | 09/09/2003 |
| 6244403 | Power transmission device for hybrid cars This invention pertains to a power transmission device suited for use in a hybrid car for selective transmission of its engine and motor powers. The power transmission device is used to transmit and cut off driving forces from an internal combustion engin... | 06/12/2001 |
| 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 |
| 4762191 | Articulated vehicle selectively driven at two axles from two power sources A vehicle, more especially in the form of an articulated omnibus, has a hybrid drive system comprising an IC engine and an electric motor, whose power is transmitted not only to an axle driven by the IC engine but in addition to a further drive axle in or... | 08/09/1988 |
| 4677365 | Automotive charging system having generator with multiple windings and regulators An automotive battery charging circuit with a generator having a field winding and a plurality of stator windings, the output of the stator windings being connected to the battery through a plurality of SCR's each having individual potentiometer control m... | 06/30/1987 |
| 4585085 | Electric wheel-drive for motor vehicles, in particular for nondestructive hybridization of automobiles An electric wheel-drive for motor vehicles, particularly automobiles with internal combustion engine, which can be installed nondestructively-reversibly in place of the brakes, with brushless, polyphasic, electronically speed-controlled electric motors in... | 04/29/1986 |
| 4562894 | Coupling multi driving system A coupling multi-driving system for producing rotational energy comprises an internal combustion engine, an output shaft and a unitary rotary drive mechanism. The rotary drive mechanism includes stator excitation windings and an armature. An electronic co... | 01/07/1986 |
| 4470476 | Hybrid vehicles Hybrid vehicles having two or more power plants which can be operated independently or simultaneously and includes an electric motor as well as an internal combustion engine which may be selectively connected to drive the drive wheels of such vehicles eit... | 09/11/1984 |
| 4438342 | Novel hybrid electric vehicle By utilizing, in a hybrid (electrical-heat engine) vehicle an alternator which is totally free of elemental iron in its magnetic circuit, the alternator (with appropriate rectification means) can be connected, selectively, in series, parallel or in lieu o... | 03/20/1984 |
| 4405029 | Hybrid vehicles Hybrid vehicles having two or more power plants which can be operated independently or simultaneously and includes an electric motor as well as an internal combustion engine which may be selectively connected to drive the drive wheels of such vehicles eit... | 09/20/1983 |
| 4351405 | Hybrid car with electric and heat engine An apparatus for economical travel and minimization of atmospheric degradation by internal combustion exhaust products. A car which has, in combination, a heat engine driving a set of front wheels, storage batteries and an electric motor driving a set of ... | 09/28/1982 |
| 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 |
| 4252205 | Vehicle having at least two driven axles A vehicle having at least two driven axles is powered by a gas turbine plant having two separate take-off shafts. One of these is connected to a first driven axle by a mechanical gearing, while the other take-off shaft is connected to a second driven axle... | 02/24/1981 |
| 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 |
| 4185710 | Vehicle having at least two driven axles A vehicle having at least two driven axles is powered by a gas turbine plant having two separate take-off shafts. One of these is connected to a first driven axle by a mechanical gearing, while the other take-off shaft is connected to a second driven axle... | 01/29/1980 |
| 4180138 | Vehicle having auxiliary drive mechanism A vehicle has a forward mounted primary gasoline engine operatively engaged with the front axle and its associated wheels. The vehicle also has a rear mounted second motor drivingly engaged with the rear axle which is normally a dead axle. The rear axle i... | 12/25/1979 |
| 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 |
| 4113045 | All-electric A.C. tractor A modular farm tractor whose wheels are driven by individual A.C. induction motors and whose accessories or attachments are also driven by A.C. induction motors. A prime mover, such as a gas turbine operating at a constant speed, is mounted on the tractor... | 09/12/1978 |
