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| Number | Title | Issue Date |
| 8182248 | Vane pump with tilting pad radial bearings A vane pump comprises: a drive shaft that passes through the pump frame; a rotor coupled to the drive shaft that has multiple vanes and rotates within the pump frame in an axial direction about an axis of rotation with an outer rotor surface that has a radius that e... | 05/22/2012 |
| 8148867 | Permanent magnet brushless machine with magnetic flux regulation A permanent magnet machine (PMM) has a generally cylindrical permanent magnet (PM) rotor that has multiple PM rotor poles arranged around a rotor axis of rotation; and a stator with two generally cylindrical and concentric yokes, an inner yoke proximate the PM rotor... | 04/03/2012 |
| 8148842 | Electrical power generation system having multiple secondary power distribution assemblies with integral power conversion An improved EPGS with an integrated electrical system architecture uses SPDAs with localised power converters to provide the necessary types of power to their respective electrical loads so that a single type of primary power bus may be used to connect its PDAs to r... | 04/03/2012 |
| 8147208 | Axially segmented impeller An impeller with an axial inlet in relation to an impeller axis for pressurizing a fluid has: a nose section that has a nose section central hub and multiple nose vane sections, each nose vane section extending from a leading edge to a generally radial nose section ... | 04/03/2012 |
| 8134331 | Motor drive system with flux regulated PM generator A method of generating and controlling power for an alternating current (AC) motor by means of at least one controlled permanent magnet machine (PMM) with a permanent magnet (PM) rotor and a stator with a magnetic flux diverter circuit for controlling the output of ... | 03/13/2012 |
| 8111062 | Low mass driveshaft speed sensor assembly A speed sensor assembly comprises: a driveshaft with a driveshaft axis, a sensing portion of the driveshaft having an axial bore along the driveshaft axis and multiple axial slots radially spaced around the sensing portion that penetrate through the driveshaft into ... | 02/07/2012 |
| 8066481 | Balancing a ram air turbine A method of balancing a ram air turbine that has a turbine shaft with a turbine shaft axis, a rotor attached to the shaft, rotor blades attached to the rotor that move between a fine pitch and coarse pitch position, a spring-loaded governor for controlling the posit... | 11/29/2011 |
| 8066096 | Inlet silencer An inlet silencer for an air inlet in a housing, which housing contains a source of high frequency noise radiated by an air intake for the source of high frequency noise, comprises: a plenum that extends longitudinally within the housing that couples the air inlet i... | 11/29/2011 |
| 8056615 | Evaporative compact high intensity cooler An evaporative compact high intensity cooler (ECHIC) for transferring heat from a heat source along a heat conduction surface of the heat source with a two-phase coolant, comprises a flow passage labyrinth of flow passages with short conduction paths interrupted by ... | 11/15/2011 |
| 8056417 | Torque oscillation monitoring A method of detecting and monitoring torsional oscillation in a mechanical coupling between a prime mover and a multiphase alternating current (AC) electrical generator, comprises the steps of: detecting in at least one received signal variations that are indicative... | 11/15/2011 |
| 8052384 | Centrifugal pump with segmented diffuser A centrifugal pump with a volute and at least one stage with an associated impeller and removable diffuser assembly comprises: multiple diffuser segments, each diffuser segment comprising a central passage from an inner curvilinear surface to an outer curvilinear su... | 11/08/2011 |
| 8015667 | Controlled rigging A method of adjusting a hinged linkage that has at least one linear actuator coupled to it, wherein one end of the actuator couples to the linkage and another end fastens to a stationary mounting by way of a rod with a threaded end that mates with a threaded apertur... | 09/13/2011 |
| 7987683 | Expendable turbine driven compression cycle cooling system A cooling system with a compression cooling cycle for a working fluid that passes an expendable fluid through a warm side heat exchanger for the cooling system to cause the expendable fluid to vaporise and thus absorb heat from the working fluid by way of latent hea... | 08/02/2011 |
| 7904229 | Method for determination of engine lubrication oil consumption A method of determining lubrication oil consumption in a gas turbine engine that has an engine operating cycle interval comprising a starting phase, a running phase and a shutdown phase, comprises the steps of: measuring lubrication oil level upon initialization of ... | 03/08/2011 |
| 7886702 | Distributed engine control system A method and apparatus for distributing control of multiple engines amongst the engines in a power generation system that has a central controller, comprises the steps of: receiving aboard each engine from the central controller a control signal representative of a ... | 02/15/2011 |
| 7885089 | Electric power generation and conversion with controlled magnetics A power conversion system comprises: a source of multiphase high frequency alternating current (AC) electrical input power; a high frequency controlled magnetics transformer for each phase of the multiphase high frequency AC input power, with each transformer having... | 02/08/2011 |
| 7884491 | Power turbine speed control using electrical load following A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comp... | 02/08/2011 |
| 7859231 | Permanent magnet electric generator with variable magnet flux excitation A permanent magnet (PM) electric generator with directly controllable field excitation control comprises: a drive shaft; a PM rotor assembly with multiple PMs arranged around an outer axial periphery of the rotor assembly; a stator assembly comprising a ferromagneti... | 12/28/2010 |
| 7852049 | Dual channel power generation system A dual channel power generation system comprises: a prime mover; a permanent magnet (PM) dynamoelectric machine that has a PM rotor coupled to the prime mover, two multiphase alternating current (AC) stators that develop electromotive force (EMF) in response to rota... | 12/14/2010 |
| 7810337 | Method to re-engage start of dynamoelectric machine A method of starting a gas turbine engine with a synchronous multiphase alternating current (AC) dynamoelectric machine with a rotor and a stator that allows re-engagement of a starting operation at non-zero rotor speeds comprises the steps of: applying electrical e... | 10/12/2010 |
| 7806596 | High speed bearing system with bind-free axial displacement A rotary bearing system that supports a shaft for rotating machinery in a housing comprises: at least one stationary rotary bearing mounted in the housing for supporting a respective journal of the shaft in a desired axial and radial alignment; at least one slidable... | 10/05/2010 |
| 7804263 | Control system for a controllable permanent magnet machine A dynamoelectric machine that has at least one rotor component proximate a stator that is axially displaceable from the stator in response to pressure of lubrication oil delivered to its lubrication system has a system for changing axial displacement of each axially... | 09/28/2010 |
| 7777384 | Permanent magnet dynamoelectric machine with variable magnetic flux excitation A permanent magnet (PM) dynamoelectric machine with directly controllable field excitation control comprises: a drive shaft; a PM rotor assembly with multiple PMs arranged around an outer axial periphery of the rotor assembly; a stator assembly comprising a ferromag... | 08/17/2010 |
| 7777358 | Power turbine speed control using electrical load following A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comp... | 08/17/2010 |
| 7748208 | Compact recirculating lubrication system for a miniature gas turbine engine A recirculating bearing lubrication system for a gas turbine engine that comprises a housing for the engine that serves as a primary static structural support, a rotor shaft for mounting rotational components of the engine, at least two bearings for supporting the r... | 07/06/2010 |
| 7737591 | Coaxial twin variable field permanent magnetic dynamoelectric machine A coaxial twin variable field permanent magnetic dynamoelectric machine comprising first and second stators displaced from each other and first and second permanent magnet rotors. The rotors comprising hydraulic actuators mounted within the rotors for axially displa... | 06/15/2010 |
| 7736062 | Auxiliary rotary bearing system For machinery comprising rotary components attached to at least one drive shaft, at least one rotary bearing to position the drive shaft with a rotational freedom of movement about a drive shaft axis and associated stationary components, apparatus that comprises: a ... | 06/15/2010 |
| 7705574 | Remote power controller with power sharing circuit A direct current (DC) remote power controller for remotely controlling DC power between a DC power source and a DC load, comprises: a current sensor for sensing the level of current that the power source supplies to the load and generating a current feedback signal ... | 04/27/2010 |
| 7701197 | Current sensing assembly An electrical current sensing assembly comprises: a conductive input substrate with a generally planar contact surface; a conductive output substrate with a generally planar contact surface proximate and substantially parallel to the input substrate contact surface;... | 04/20/2010 |
| 7677135 | Electromechanical power transfer system with multiple dynamoelectric machines An electromechanical power transfer system for a vehicle, comprises: an electrical power source; a system controller; at least two dynamoelectric machines; an electrically engageable clutch for each machine; an input shaft coupled to the jack shaft; an output shaft ... | 03/16/2010 |
| 7671665 | Constant-ON state high side switch circuit An electrical switching circuit for controlling current flow to an electrical load from a primary power source with a first electrical potential difference relative to a circuit ground comprising a primary energy storage device with a low side coupled to the electri... | 03/02/2010 |
| 7669325 | Method of assembling a modular portable compressor A method of assembling a portable compressor package comprises steps of assembling a sub-frame module that comprises the mechanical components of an apparatus for ease of assembly to associated structural modules for minimisation of assembly time and ease of assembl... | 03/02/2010 |
| 7640723 | Engine with fuel/lubricant supply system for bearing lubrication A fuel delivery system for a gas turbine engine that delivers fuel to a combustor of the engine and lubricates bearings of the engine with fuel, comprising: a tank for storing the fuel; a pump for delivering a continuous flow of fuel from the tank to the combustor b... | 01/05/2010 |
| 7633729 | Alternating current series arc fault detection method A method of detecting and indicating a presence of alternating current (AC) series arc fault events in current supplied by an AC electrical power source to an electrical load for the power source comprises the steps of: measuring positive and negative current throug... | 12/15/2009 |
| 7625173 | Inlet plenum for gas turbine engine An inlet plenum for coupling airflow from a radial airflow inlet to an axial compressor inlet for a compressor comprises a perforated inlet (PI) baffle that comprises a generally cylindrical baffle that circumscribes the compressor inlet and a plurality of apertures... | 12/01/2009 |
| 7619327 | Hybrid electromechanical power transfer system An electromechanical power transfer system that transfers power between a prime mover and a combination of multiphase alternating current (AC) and direct current (DC) electrical power systems, comprises: a dynamoelectric machine that has a rotor assembly coupled to ... | 11/17/2009 |
| 7615881 | Power turbine speed control using electrical load following A power turbine speed control system for a turbo-shaft type gas turbine engine that has a gas generator compressor spool and a power turbine spool and drives an electrical generator that powers at least one electrical load by way of at least one electrical bus, comp... | 11/10/2009 |
| 7597000 | Top view liquid sight level indicator A top reading liquid sight level indicator mounts above a liquid contained in a liquid vessel comprises a measuring surface mounted to the liquid vessel that penetrates an upper surface of the contained liquid at a cant from normal to the liquid surface so that the ... | 10/06/2009 |
| 7583046 | Rotor position detection at standstill and low speeds using a low power permanent magnet machine For a multiphase alternating current (AC) wound field synchronous machine (WFSM) that has a stator with a selected number of poles, the WFSM having an associated exciter and multiphase AC permanent magnet machine (PMM) directly coupled to the WFSM, a method of sensi... | 09/01/2009 |
| 7540141 | Smart fuel control system A fuel control system uses a fuel pump powered by a variable speed pump motor controlled by a closed loop electronic feedback system that tracks motor speed and corrects fuel pump motor speed so that the fuel pump delivers flow according to a desired flow schedule b... | 06/02/2009 |
