Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8069668 | Method and system for autonomous load sharing A method of autonomously sharing a load between at least two output generation devices, the method including: providing at least two output generation devices, wherein the at least two output generation devices operate autonomously with respect to one another and th... | 12/06/2011 |
| 7546733 | Method for controlling operation of cylinder apparatus A cylinder apparatus comprises a piston which is displaced along a cylinder tube under the driving action of a driving section provided for a main cylinder body, while the piston is displaced under the pressing action of a pressure fluid supplied to the cylinder tub... | 06/16/2009 |
| 7241192 | Hybrid ship propulsion system A hybrid propulsion system includes a main diesel engine for driving the marine turbine and an electric motor. The electric motor has a nominal output that constitutes at least 20% of the nominal output of the main diesel engine. The electric motor remains continuou... | 07/10/2007 |
| 7212888 | Method for controlling the drive unit of a vehicle A method for controlling the drive unit of a vehicle considers several desired input quantities of different priority in the formation of a desired value. At least one output quantity of the drive unit is adjusted in dependence upon the desired value input quantitie... | 05/01/2007 |
| 7207177 | Position control device for an electrical-fluid power drive and a method of positioning A method and a position control device for an electrical-fluid power drive comprising a fluid power and an electrical actuator for driving a force output point. The invention contemplates the following steps: of derivation of a target overall drive force, to be prov... | 04/24/2007 |
| 7093447 | Auxiliary power unit with an oil-free compressor An auxiliary power unit for aircraft with a load compressor that delivers cabin air free of oil contamination by supporting a drive shaft for the load compressor with oil-free bearings and coupling the load compressor to a gearbox and power head for the auxiliary po... | 08/22/2006 |
| 7088011 | Motor-generator system with a current control feedback loop A motor-generator system with a current control feedback loop for generating electrical energy in stationary, portable, and automotive applications. The generator includes a housing defining an interior space and including a first portion and a second portion; an el... | 08/08/2006 |
| 7047745 | Method for operating a hybrid engine According to a prepared program and the signal from a crank angle sensor, a computer switches two operation modes A and B in which an electric motor operates, and the computer creates a pair or pairs of different operation mode phases during the period from an ignit... | 05/23/2006 |
| 7004060 | Balancing vertical load device for a motor A balancing vertical load device for a motor, to be used in conjunction with a vertical driving device with a force- and position-controlled motor, comprising a motor assembly and a sealed air pressure system. The motor assembly has a motor, and a load weight which,... | 02/28/2006 |
| 6983588 | Turbofan variable fan nozzle A turbofan exhaust nozzle includes a fan duct defined between a fan nacelle and core engine cowling. The duct includes an arcuate outlet at the trailing edge of the nacelle. A movable flap is disposed in a minor portion of the fan duct, with a remaining major portio... | 01/10/2006 |
| 6892541 | Vehicle control device and control method of the same A vehicle control device is installed in a hybrid vehicle which can run by a driving force of at least one of an engine and a motor, and charges a battery by driving the engine when an amount of electric power stored in a battery which supplies the electric power to... | 05/17/2005 |
| 6840045 | Compound engine dynamo-electric machine A first exhaust turbo rotary machine is able to assist turbo supercharging by operating as a motor on power generated in a second rotary machine connected to a power axis of an engine. Also, when exhaust energy is large, the first turbo rotary machine operates as a ... | 01/11/2005 |
| 6810669 | Clutch engagement detector and uniaxial combined plant having the detector This invention provides a clutch engagement detecting apparatus, which can accurately detect the state of engagement of a clutch using a helical spline engagement structure, and a single-shaft combined plant having it, and is constructed as follows: If the differenc... | 11/02/2004 |
| 6751960 | Control system of hybrid transmission A control system for controlling a hybrid transmission including a two-degree-of-freedom differential mechanism is arranged to change a target prime-mover revolution speed of a prime mover so as to decrease an electric power output of first and second motor/generato... | 06/22/2004 |
| 6732526 | Hybrid automatic transmission In a hybrid automatic transmission of a hybrid electric vehicle equipped with a differential device having two-degree-of-freedom and at least four rotating members respectively connected to a prime mover as an input element, a drive train as an output element, and f... | 05/11/2004 |
| 6694741 | Electronic engine synchronizer A control system for use with a master engine and one or more slave engines. The master engine produces a master torque and the slave engines produce slave torques. The master engine and the slave engines have computers that control fueling to the engines... | 02/24/2004 |
| 6651436 | Hybrid vehicle control apparatus A control apparatus for a hybrid vehicle of the present invention determines whether a brake switch flag F_BKSW is "1" or not (step S101), and in the case where the brake is on ("yes"), obtains a deceleration regeneration computation value DECRGN by table... | 11/25/2003 |
| 6411872 | Vehicle controlling apparatus To secure normal operation and then restart a microprocessor (CPU) when a CPU built into an on-vehicle electronic apparatus runs away. A number of on-vehicle loads driven from a CPU, a watchdog timer for monitoring the CPU to reset and restart it on occur... | 06/25/2002 |
| 6209672 | Hybrid vehicle A hybrid vehicle comprising an an internal combustion engine controllably coupled to road wheels of the vehicle by a clutch, a traction motor coupled to road wheels of said vehicle, a starting motor coupled to the engine, both motors being operable as gen... | 04/03/2001 |
| 6129075 | Compression ignition type engine A compression ignition type engine, wherein a first combustion where the amount of the recirculated exhaust gas supplied to the combustion chamber is larger than the amount of recirculated exhaust gas where the amount of production of soot peaks and almos... | 10/10/2000 |
| 5701062 | Pulsing control for an inertial drive system for a multi-motor binary array vehicle A pulsing drive system delivers pulsed power signals to the driven wheels of a vehicle for improving the efficiency internal combustion or an electric motor driven vehicles. A controller receives signals such as velocity and demand, and communicates to a ... | 12/23/1997 |
| 5425237 | Counterbalance system A machine with a movable element, such as a machine tool and its spindle carrier, that is powered by a motive means to move the element is provided with a counterbalancing system having at least two counterforce means operably connected to the movable ele... | 06/20/1995 |
| 5176213 | Driving force distribution system for hybrid vehicles In a hybrid vehicle in which the front or rear set of wheels is driven by an engine (7) and the other set of wheels is driven by a motor (8), a traveling mode deciding unit (4) is provided with a table for deciding engine throttle opening and motor output... | 01/05/1993 |
| 4831567 | Method and apparatus for pilot training A method and system for providing training mode operation of a multiple engine aircraft simulates the failure of one engine and the simultaneous operation of at least one other engine in an elevated, emergency power condition. The engines (20, 22) are mec... | 05/16/1989 |
| 4771606 | Helper drive apparatus for turbine drive system A helper drive apparatus for a turbine drive system in which a load is mainly driven by a turbine and a helper motor is used for assisting the drive for the load, comprising: a turbine control circuit, coupled to the turbine, for controlling output power ... | 09/20/1988 |
| 4754612 | Method for optimizing the mechanical output of a fluid pressure free piston engine A fluid pressure, free piston engine, such as a centrifugal piston expander, provides a cyclically varying torque to a rotatable output shaft. A unidirectional or overrunning rotational clutch comprising two relatively rotatable elements has one element s... | 07/05/1988 |
| 4747268 | Control means for a plurality of mechanically coupled hydrostatic machines with variable volume in a drive system with impressed pressure A plurality of mechanically coupled secondarily controlled hydrostatic machines with variable volume are connected to a line with impressed system pressure fed by a primary unit. By reducing the variable volume to 0 in individual hydrostatic machines the ... | 05/31/1988 |
| 4730118 | Oil field induction generator system An induction generator system is disclosed for utilization with an oil producing well having casing gas available at the wellhead and an existing electrical power system. An electric motor is coupled to the existing electrical power system and is utilized... | 03/08/1988 |
| 4702082 | Load sharing apparatus and method for multiple engines A load sharing apparatus and method for coupled master and slave engines having respective throttle actuators to receive initial throttle signals, and load transmitters for transmitting load signals reflecting load on the particular engine. Apparatus has ... | 10/27/1987 |
| 4586341 | Twin engine synchronizer Disclosed herein are apparatus and methods for synchronizing the speeds of two or more engines, each having its own throttle lever connected by an associated cable to a respective hand throttle lever. More particularly, the throttle lever of one of the en... | 05/06/1986 |
| 4580402 | Torque leveller and governor Governor devices are described for use on single or multi-engine plants, some of whose engines or whose load experiences periodic torque variations, which act upon the torque regulator of at least one of the engines to maintain engine torque equal to load... | 04/08/1986 |
| 4479357 | Method and apparatus for automatically synchronizing multiple engines An apparatus for synchronizing the operation of one or more slave engines with that of a master engine in which a servomechanism automatically controls the operation of the slave engines to synchronize them with the master engine while each slave engine a... | 10/30/1984 |
| 4455838 | Control device for a balancing apparatus A control device for a balancer includes a load detector for determining the torque exerted on a driving screw attributable to the load driven and supported thereby. A fluid pressure control device increases or decreases the pressure input to a balancing ... | 06/26/1984 |
| 4441675 | High lift surface actuation system A drive system for high-lift devices on aircraft having two power drive units, one at each end of the connecting torque tube system, so as to force sum the outputs. A one-way brake always insures against inadvertent retraction of the device but allows ext... | 04/10/1984 |
| 4433547 | Torque leveller Governor devices are described for use on multi-engine plants, some of whose engines experience periodic torque variations, which act upon the torque regulator of at least one of the engines to maintain a steady torque and speed of the common final power ... | 02/28/1984 |
| 4412422 | Apparatus and method for controlling a multi-turbine installation The invention is practiced by providing a plurality of turbine-driven systems each producing an output proportional to a respective control signal, means for generating a respective first output signal for each of the turbine-driven systems proportional t... | 11/01/1983 |
| 4344364 | Apparatus and method for conserving fuel in the operation of a train consist The apparatus includes a master control unit associated with a first locomotive and a slave control unit associated with a second locomotive. Each of the control units is identically constructed to include an electronic processor and memory. The memory in... | 08/17/1982 |
| 4305254 | Control apparatus and method for engine/electric hybrid vehicle A hybrid vehicle comprises an internal combustion engine and a motor/generator, which are controlled by a microcomputer. The internal combustion engine is rendered capable of a running operation in a region of a better fuel consumption characteristic. Out... | 12/15/1981 |
| 4277945 | Control system for equalizing the torques of multiple engines driving a common load A control system equalizes the torques of a lead and a slave engine driving a common load by comparing the throttle settings of the engines and controlling the slave engine throttle with a speed signal equal to the algebraic sum of the lead engine speed s... | 07/14/1981 |
| 4271473 | Control of parallel operated turbines in cogeneration A control system is provided for turbines in the utility part of an industrial plant using cogeneration so that control is maintained over the relative quantities of steam supplied to a common steam header from both the back pressure and the extraction tu... | 06/02/1981 |
