"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 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 |
| 7086838 | Fuel system with a field modification module for controlling fuel flow The present invention provides a system for controlling speed of the fuel pump. The system includes a fuel pump, a controller, and a field modification module. The fuel pump is configured to receive a driving signal causing the fuel pump to pump fuel. The controller... | 08/08/2006 |
| 7076206 | System for wireless transmission of electrical power, a garment, a system of garments and method for the transmission of signals and/or electrical energy The invention describes a system for electrical transmission in the field of garments and a corresponding transmitter for this. Electrical circuits in garments are coupled, preferably inductively in a wireless manner with electrical devices and/or electrical circuit... | 07/11/2006 |
| 7064525 | Method for improved battery state of charge A method for improving vehicle battery state-of-charge (SOC) for initial vehicle customer delivery is disclosed. The method is focused on vehicle assembly plant practices and ensuring that battery discharge is minimized or eliminated during the vehicle assembly proc... | 06/20/2006 |
| 7013868 | Accelerator signal offset system A disclosed accelerator pedal offset system includes a first connector that can be coupled to an accelerator pedal of a motor vehicle and a second connector that can be coupled, in place of the accelerator pedal, to an engine control module of the vehicle. The secon... | 03/21/2006 |
| 6998823 | Method of reducing engine belt noise A method is provided for reducing belt-related noise in an engine, wherein the belt is engaged with an alternator pulley connected with an alternator, and a crankshaft pulley connected to an engine crankshaft. The method includes controlling rotor current in the alt... | 02/14/2006 |
| 6975046 | Internal combustion engine control system for vehicle and control method thereof An internal combustion engine control system for vehicle prevents an electronic device from being damaged due to over-voltage failure of a generator, and enables the vehicle to continue to travel. Over-voltage failure of a vehicle generator (3) is detected fr... | 12/13/2005 |
| 6933704 | Slip-inducing rotation starting exciter for turbine generator A dynamoelectric machine combining the functions of an exciter, a turning motor, and a starting motor for a turbine. The machine operates in a first mode where the slip between a first stator winding and a first armature winding is positive and thus the magnetic fie... | 08/23/2005 |
| 6859018 | Wound field synchronous machine control system and method A wound field synchronous machine control system comprises: an auxiliary winding for obtaining auxiliary AC voltage from the wound field synchronous machine; a phase controlled rectifier for rectifying the auxiliary AC voltage and supplying rectified DC voltage to t... | 02/22/2005 |
| 6838860 | Power generating system including permanent magnet generator and shunt AC regulator An electrical power distribution system includes permanent magnet generator, and an ac regulator. The ac regulator includes an inverter shunt-connected to the permanent magnet generator, and an inverter control for causing the inverter to regulate voltage at output ... | 01/04/2005 |
| 6838859 | Device for increasing power of extremely low DC voltage A device for increasing an extreme low voltage from a heat to electrical voltage thermopile is shown. The device has an oscillator including two MOSFET transistors coupled to a transformer having four bifilar windings wound on a core having a high permeability. The ... | 01/04/2005 |
| 6794854 | Vehicle power converted with shunt resistor having plate-shape resistive member A power converter includes a shunt resistor constituted by a shunt resistance and a plurality of main electrodes made of a sheet-like resistive material. In the shunt resistor, plates lower in volume electric resistivity than the resistive material, higher in therma... | 09/21/2004 |
| 6740986 | Engine generator The throttle opening setting value provided from a throttle controller 108 may exceed the actual controllable range of the throttle opening. The value stored in an output voltage setter 20 is read out in response to its throttle opening setting value a... | 05/25/2004 |
| 6552515 | Engine speed controlled generator set having an inverter and direct current output smoothing capacitor The performance of a generator is improved in a higher range of the output by correcting a decrease in the average direct current voltage supplied to an inverter. An average calculator calculates an average of direct current voltage inputs to the inverter... | 04/22/2003 |
| 6429613 | Generation control device of hybrid electric vehicle A generation control device of a hybrid electric vehicle is able to satisfactorily generate power with an excellent responsiveness with respect to a high output requirement from a motor. If a charge level SOC sensed by a charge level sensing device is not... | 08/06/2002 |
| 6278262 | Auxiliary power unit system and method of operating an auxiliary power unit An auxiliary power unit ("APU") system and methods used to bring such system on-line and off-line are disclosed. An APU generator forming part of an APU system, is brought "on-line" smoothly in order to replace a primary generator operating at a steady-st... | 08/21/2001 |
| 6166349 | Hydraulically driven welding machine with feedback A hydraulically driven welding machine employs a closed loop control system for maintaining a constant speed of a generator. A feedback device produces a controlled frequency proportional to the actual generator frequency. The controlled frequency is comp... | 12/26/2000 |
| 5819187 | Electric vehicle propulsion system and batteries therefor An initial output of a secondary battery on an electrically propelled vehicle is set to a value which is at least the sum of an established power output of a motor, an output reduction due to the memory effect of the secondary battery, and an allowable ou... | 10/06/1998 |
| 5656921 | Control of a vehicle powertrain A controller 20 for a vehicle powertrain, the powertrain comprising an electric motor 16 powered by a battery and an engine 14 powered by fossil fuel. The engine 14 is typically an internal combustion petrol engine. The controller 20 is operative to use m... | 08/12/1997 |
| 5497070 | Controller of an engine driven generator for an electric vehicle Controller 40 receives accelerator opening and brake depressing amounts, and the output of an ammeter 30 and voltmeter 32 as inputs. In response to the state of these input signals, the controller 40 determines the timing to detect the state of charge (SO... | 03/05/1996 |
| 5489765 | Electrical heating system with air-driven electrical generator Compressed air-driven electrical generator supplies electric current to resistance heating element on demand in a baseboard heating system. A thermostat in communication with an air valve actuator, allows compressed air to flow from an air holding tank to... | 02/06/1996 |
| 5402007 | Method and apparatus for maintaining vehicle battery state-of-change In a vehicle having a voltage regulated electric alternator driven by an engine for supplying power to drive electrical loads and to charge a vehicle battery, a method of maintaining battery state-of-charge includes adaptively learning a system voltage se... | 03/28/1995 |
| 5057764 | Idling engine speed controlling apparatus for an engine An idling engine speed controlling apparatus for an engine having a generator driven by an engine to charge a battery, a switching means for controlling the supply and interruption of an exciting current to a field winding for the generator so that a volt... | 10/15/1991 |
| 5051682 | System for detecting load on generator A peak hold circuit and a sample-and-hold circuit are provided for accurately and immediately detecting variations in a load connected to a generator. The peak hold circuit holds a peak voltage of a waveform voltage signal having an amplitude correspondin... | 09/24/1991 |
| 4894602 | Overvoltage protection system for marine ignition and regulator circuitry In a marine propulsion system including an internal combustion engine driving a voltage generator (14) supplying system voltage (line 26) which is supplied to ignition circuitry (10) providing spark ignition for running the engine in normal operation, ove... | 01/16/1990 |
| 4730516 | Drive apparatus for auxiliary equipment responsive to a charging generator speed representing signal A drive apparatus for auxiliary equipment is disclosed which has a planetary cone reduction gear housed within a pulley which belt drives auxiliary equipment including a charging generator. An adjusting mechanism for adjusting the reduction ratio of the s... | 03/15/1988 |
| 4685111 | Phase stabilization for mode locked lasers A method and system for stabilizing the phase relationship of two RF-controlled mode locked lasers involves monitoring the output of both lasers and, with a phase detector/comparator, generating a voltage proportional to the phase difference between the t... | 08/04/1987 |
| 4661761 | Internal combustion engine electrical system An internal combustion engine electrical system is disclosed which is adapted to use an internal combustion engine as a driving source. The generating system is constructed in a manner such that the output of an A.C. generator driven by the engine is rect... | 04/28/1987 |
| 4651081 | Control apparatus for vehicular charging generator A control apparatus for a vehicular charging generator utilizing various sensors which detect an unstable rotation during the starting of an engine, the acceleration/deceleration condition of the engine, an overload condition of the engine etc. to regulat... | 03/17/1987 |
| 4527112 | Engine speed control circuit for emergency vehicle A control circuit for a vehicle electrical system which is operative when the vehicle engine is running but the vehicle is not in motion to sense vehicle storage battery voltage and, when that voltage is below a predetermined threshold, to enable an elect... | 07/02/1985 |
| 4463267 | Power supply monitor A power supply monitor is disclosed for monitoring the finely regulated voltage in a two-stage tracking power supply which is driven by a gas turbine engine and which has a coarsely regulated and a finely regulated stage. A reference voltage is generated ... | 07/31/1984 |
| 4413223 | Induction generator frequency control system A frequency control system for an n-phase induction machine having an input shaft and at least one output line, where n is an integer. The system includes a generator that provides an electrical frequency control signal, fe, which is representa... | 11/01/1983 |
| 4360860 | Self-contained hand held portable lantern-flashlight consisting of a manually operated generator and rechargeable batteries A unitary portable flashlight assembly incorporating a hand operated generator and rechargeable batteries, such as the pressure vented nickel-cadmium type with welded electrodes. The generator is designed and operated to charge th batteries at a high rate... | 11/23/1982 |
| 4287428 | Automatic spring powered battery charging device A battery charging device which is driven by a torsional spring. A gear train driven by the spring is coupled with a wheel having peripheral teeth. A control lever is reciprocated pivotally by a small spring to engage the teeth of the wheel in a manner to... | 09/01/1981 |
| 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 |
| 4131842 | Automatic spring-powered battery charging device A battery charging mechanism which is driven by a coil spring. A gear train driven by the spring includes a wheel having peripheral teeth. A control lever is reciprocated pivotally by a small spring to engage the teeth of the wheel in a manner to control ... | 12/26/1978 |
| 4114084 | Turbine-generator protection system with electronic sampling filter A system for protecting a turbine-generator power plant governed by signals representative of turbine mechanical power and generator electrical power to reduce at times the turbine mechanical power, with an electronic filter included therein for the purpo... | 09/12/1978 |