| Patent Number |
Title Of Patent |
Date Issued |
| 6971537 |
Support arrangement for semi-membrane tank walls |
December 6, 2005 |
| In the support arrangements for a semi-membrane tank walls described in the specification, the top and side walls of a semi-membrane tank are provided with stiffener members and a surrounding tank support structure has support members which are connected to the stiffener members through |
| 6963151 |
Composite lamina arrangement for canning of motors |
November 8, 2005 |
| In the embodiments described in the specification, an electric motor has a stator and a rotor and a wrap layer includes composite lamina arrangement containing a liquid barrier with a veil cloth and a chopped strand mat resin layer, a strength element containing a hoop wrap including a |
| 6854960 |
Segmented composite impeller/propeller arrangement and manufacturing method |
February 15, 2005 |
| In the embodiments described in the specification, an impeller is manufactured by providing a mold for one angular segment containing one vane of an impeller and corresponding hub and rim portions, injection-molding fiber-reinforced polymer composite resin material into the mold to p |
| 6847145 |
Encapsulated permanent magnet motor rotor |
January 25, 2005 |
| Encapsulation of a permanent magnet rotor is achieved by applying a glass roving material to spaces in the rotor structure, applying a veil cloth around the outer surface of the rotor, mounting a vacuum bag with vacuum ports around the outer surface of the rotor, removing vent plugs from |
| 6837757 |
Rim-driven propulsion pod arrangement |
January 4, 2005 |
| In the embodiments described in the specification, a rim-driven propulsion pod arrangement has a cylindrical housing with a duct providing a flow path for water and a rotor assembly supported from a central shaft and containing a rotating blade row and driven by a rim drive permanent mag |
| 6750628 |
Flux shunt wave shape control arrangement for permanent magnet machines |
June 15, 2004 |
| In the embodiments described in the specification, a permanent magnet machine includes a stator having windings which intercept flux received from peripheral pole pieces in a rotor generated by permanent magnets disposed between the pole pieces. In order to control the flux passing t |
| 6626319 |
Integrated tank erection and support carriage for a semi-membrane LNG tank |
September 30, 2003 |
| In the typical embodiment of the invention described in the specification, a prismatic semi-membrane LNG tank is assembled within a support carriage surrounding the top and side walls of the tank and is connected to the tank by a plurality of load bearing insulating support blocks affixe |
| 6619502 |
Vertical corner transition arrangement for semi-membrane tank |
September 16, 2003 |
| In the vertical corner transition arrangement for semi-membrane tanks disclosed in the specification, curved horizontal sides plate of a semi-membrane tank wall are welded to one side of a vertical extruded aluminum modified I-beam with a vertical tapered stiffening corner block proj |
| 6603232 |
Permanent magnet retaining arrangement for high speed rotors |
August 5, 2003 |
| In the embodiments described in the specification, permanent magnets are retained on a permanent magnet rotor rim by inverted U-shaped retainers and in one embodiment the outer surfaces of the retainers converge inwardly in the radially outward direction and engage corresponding surf |
| 6573800 |
Continuously changing random signal generating arrangement and method |
June 3, 2003 |
| In the particular embodiments of the invention described in the specification, a first signal generator produces a signal which changes in cycles having approximately straight line segments between maximum and minimum values at a first rate and a second signal generator produces a si |
| 6548932 |
Nonmagnetic magnet retention channel arrangement for high speed rotors |
April 15, 2003 |
| In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel member inserted between each adjacent pair of pole pieces. Each magnet retention |
| 6540407 |
Rolling element bearing arrangement |
April 1, 2003 |
| In the typical embodiments described in the specification, a rolling element bearing arrangement includes an inner raceway with a curved outer surface facing in one lateral direction, an outer raceway with a curved inner surface facing in the opposite lateral direction, an array of r |
| 6504281 |
Synchronous machine fault tolerant arrangement |
January 7, 2003 |
| A fault tolerant synchronous machine has a stator with a core containing a plurality of phase windings, a rotor supported for rotation within the core, and a non-magnetic sleeve affixed to the stator and disposed in the space between the stator and the rotor and having a plurality of slo |
| 6492754 |
Magnet retention channel arrangement for high speed operation |
December 10, 2002 |
| In the magnet retention channel arrangement for a high speed rotor described in the specification, a rotor has an array of radially projecting, angularly spaced pole pieces and a magnet retention channel arrangement inserted between each adjacent pair of pole pieces. Each magnet rete |
| 6481090 |
Installation and removal of energized permanent magnets in permanent magnet rotors |
November 19, 2002 |
| In the embodiments described in the specification, a permanent magnet machine has a stator assembly containing a circular array of stator windings and a rotor assembly containing passages for permanent magnets and supported for rotation within the stator windings. The rotor assembly |
| 6452301 |
Magnet retention arrangement for high speed rotors |
September 17, 2002 |
| In the rotor arrangement disclosed in the specification a rotor has a central shaft with a surrounding rim to which a circumferential array of pole pieces is mechanically affixed by screws. An array of permanent magnets each mounted between an adjacent pair of pole pieces is radially |
| 6340851 |
Modular transformer arrangement for use with multi-level power converter |
January 22, 2002 |
| A modular transformer arrangement providing power to a multi-level power converter includes a plurality of three phase transformers having delta or extended delta connected primary windings and delta or extended delta or wye or zig zag wye connected secondary windings and the multi-level |
| 6320731 |
Fault tolerant motor drive arrangement with independent phase connections and monitoring system |
November 20, 2001 |
| In the embodiment described in the specification, a fault tolerant motor drive circuit arrangement includes a motor having three stator windings which are electrically isolated and are supplied by separate single phase drive circuits, each having a differential current sensor detecting |
| 6295190 |
Circuit breaker arrangement with integrated protection, control and monitoring |
September 25, 2001 |
| A PCM module arrangement includes a three phase circuit breaker and PCM electronics unit. Each phase of the circuit breaker has a Rogowski coil at the line side and load side contacts in a vacuum bottle and another zero sequence current sensor encloses the load side conductors of the cir |
| 6276442 |
Combined condenser/heat exchanger |
August 21, 2001 |
| A combined steam condenser and liquid-to-liquid heat exchanger has an outer shell forming an enclosure within which a first plurality of tubes are supported at opposite ends by tube sheets to provide a steam condenser. Within the outer shell an inner shell having a heat exchange liquid i |
| 6244912 |
Strut-mounted marine propulsion unit |
June 12, 2001 |
| A marine propulsion unit supported from a vessel by a strut contains an electric motor within a housing and a forward propeller driven by the electric motor and having a diameter larger than that of the housing. Hydrodynamic vanes projecting from the surface of the housing counteract |
| 6232731 |
Multi-channel motor winding configuration and pulse width modulated controller |
May 15, 2001 |
| A multi-channel motor winding configuration providing low harmonic distortion and a PWM inverting controller for this type of winding configuration are disclosed. The motor winding configuration includes a plurality of individually insulated conductors wound in a group through the st |
| 6230791 |
Heat transfer cold plate arrangement |
May 15, 2001 |
| In the embodiments described in the specification a metal heat transfer cold plate has two sets of parallel coolant passages extending between opposite end surfaces and non-metallic headers made of electrically insulating material are attached to the opposite ends of the metal plate. |
| 6217399 |
Propulsion arrangement for axisymmetric fluid-borne vehicles |
April 17, 2001 |
| In the propulsion arrangement for an axisymmetric vehicle described in the specification, four propulsion modules are removably mounted at the rear of a vehicle in symmetric disposition about the vehicle axis, each module having an inlet section at its forward end which draws in the vehi |
| 6203388 |
Integrated external electric drive propulsion module arrangement for surface ships |
March 20, 2001 |
| In the external electric drive propulsion module arrangement described in the specification, two parallel propulsion units are mounted in a housing affixed beneath the stern of a ship and having a surface contour conforming to the contour of the adjacent surface portions of the ship's |
| 6188139 |
Integrated marine power distribution arrangement |
February 13, 2001 |
| A marine power distribution arrangement includes a turbine-driven AC generator which supplies AC power at a frequency of 240 Hz through a switchgear unit to a transformer and a first power converter by which the power is converted to a variable frequency, variable voltage AC output for |
| 6175163 |
Integrated high frequency marine power distribution arrangement with transformerless high voltag |
January 16, 2001 |
| A marine power distribution arrangement utilizes generators driven at standard or higher than normal speeds and/or having a number of poles to produce electric power at a standard 50/60 Hz frequency or substantially higher than the standard 50/60 Hz frequency, such as 400 Hz. Each ge |
| 6152791 |
External electric drive propulsion module arrangement for swath vessels |
November 28, 2000 |
| In the embodiments described in the specification, a SWATH vessel has a superstructure supported by strut members from a pair of pontoons and each pontoon has a propulsion module removably attached to the rear end of the pontoon. The propulsion module has a self contained propulsion syst |
| 6150747 |
Composite stator and rotor for an electric motor |
November 21, 2000 |
| In the embodiments described in the specification, a stator for an electric motor has an outer ring member made of resin material and supported from a frame by stator caps and a flanged inner composite ring member made of resin material which receives a steel band. Laminations and coil w |
| 6150743 |
Composite motor end housing with a metallic sleeve bearing support |
November 21, 2000 |
| An electric motor housing including a metal internal hub and composite material reduces weight, reduces motor vibration transmission, increases mechanical damping, improves corrosion resistance and improves electrical performance. |
| 6150731 |
Integrated high frequency marine power distribution arrangement with transformerless high voltag |
November 21, 2000 |
| A marine power distribution arrangement utilizes generators driven at standard or higher than normal speeds and/or having a number of poles to produce electric power at a standard 50/60 Hz frequency or substantially higher than the standard 50/60 Hz frequency, such as 400 Hz. Each ge |
| 6142090 |
Power converter arrangement for integration into a ship structure |
November 7, 2000 |
| In the embodiments described in the specification, a power converter unit contains a series of enclosures mounted on a platform which is supported from a ship's hull structure by isolation mounts. Each enclosure includes power conversion modules and is supplied with power cables, cooling |
| 6141228 |
Parallel resonant DC linked inverter arrangement and method utilizing antiferroelectric dielectr |
October 31, 2000 |
| In the parallel resonant DC link inverter described in the specification, a DC voltage is applied to a plurality of semiconductor switches to provide an AC driving voltage for an AC motor by way of an LC tank circuit containing a nonlinear capacitance device having an antiferroelectric |
| 6131648 |
High pressure corrugated plate-type heat exchanger |
October 17, 2000 |
| A high pressure corrugated plate-type heat exchanger includes a plate pack consisting of stacked corrugated plates having seals between adjacent plates contained in a high pressure enclosure. The seals act as the primary arrangement for containing the high pressure fluids supplied to |
| 6125528 |
Method for making a composite electric motor housing |
October 3, 2000 |
| An electric motor housing is made by press-forming a composite material on a metal cylinder and machining passages in the press-formed material. This reduces weight, reduces motor vibration transmission, increases mechanical damping, improves corrosion resistance and improves electrical |
| 6118932 |
Method and arrangement for a high voltage single-stage variable speed drive |
September 12, 2000 |
| A high voltage, single-stage variable speed motor power supply utilizes direct AC-to-AC converters that do not have any intermediate DC link, along with a multi-level, multi-phase, multi-circuit variable speed motor drive and a motor in which a stator is wound with a number of multi-phas |
| 6082670 |
Method and arrangement for fluidborne vehicle propulsion and drag reduction |
July 4, 2000 |
| A method and arrangement for propelling fluidborne vehicles is disclosed that results in reduction in the overall form drag of certain classes of vehicles. The method and arrangement consists of using a propulsion system with an inlet that circumscribes the transition region between a fo |
| 6075684 |
Method and arrangement for direct current circuit interruption |
June 13, 2000 |
| In the direct current circuit interruption arrangements disclosed in the specification, a solid state circuit interrupter interrupts the connection in a circuit path between a power source and a load. The stored energy in the circuit is dissipated in a resistive commutation circuit by us |
| 6072252 |
Composite electric motor shaft |
June 6, 2000 |
| A composite electric motor shaft including axially distributed metallic and nonmetallic sections joined together exhibit increased mechanical damping, increased rotor critical speed, improved corrosion resistance and improved motor performance. |
| 6069421 |
Electric motor having composite encapsulated stator and rotor |
May 30, 2000 |
| The electric motor disclosed in the specification has an encapsulated stator which includes inner and outer annular composite layers each having a radial flange joined to an end of the other layer by chemical welds, an array of laterally adjacent circular laminations and windings in axia |
| 6066902 |
Energy recovery arrangement for a power electric switch |
May 23, 2000 |
| In the embodiments disclosed in the specification, a thermoelectric generator is provided in a layer between a heat transfer plate and a plurality of power electronic switches and the voltage generated by the thermoelectric generator is used to control switching of the switches. When |
| 6020665 |
Permanent magnet synchronous machine with integrated magnetic bearings |
February 1, 2000 |
| In the particular embodiments described in the specification, a permanent magnet synchronous machine includes a stator with a plurality of stator coils and a rotor within the stator having a plurality of permanent magnets disposed around its periphery, and position detectors for dete |
| 6008971 |
Fault protection arrangement for electric power distribution systems |
December 28, 1999 |
| A fault protection arrangement for electric power distribution systems includes a plurality of power sources connected to a distribution bus through circuit breakers and a plurality of loads connected through switches to the distribution bus, along with fault sensors in each of the p |
| 6005315 |
Fault-tolerant magnetic bearing control system architecture |
December 21, 1999 |
| A fault-tolerant control system for a magnetic bearing arrangement which maximizes dynamic response of the control system is disclosed. The arrangement includes a main digital signal processor responsive to rotor position/velocity signals to supply control signals to bearing control |
| 5967749 |
Controllable pitch propeller arrangement |
October 19, 1999 |
| In the particular embodiments described in the specification, a controllable pitch propellor arrangement includes a plurality of propellor blades supported from a central hub which is rotatably mounted on a shaft in which each blade is pivotally supported from the central hub. Two ra |
| 5952755 |
Permanent magnet motor rotor |
September 14, 1999 |
| A permanent magnet motor rotor arrangement including a rotor core having radial and angular positioning surfaces provides for inexpensive and precise positional control of rotor components. |
| 5941506 |
Steam seal air removal system |
August 24, 1999 |
| A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorpora |
| 5933339 |
Modular static power converter connected in a multi-level, multi-phase, multi-circuit configurat |
August 3, 1999 |
| In the particular embodiments described, an unlimited voltage static power converter includes an array of multi-level phase drivers consisting of a plurality of H-bridge power modules connected in series. The midpoint node of the series-connected power semiconductors is connected to corr |
| 5925957 |
Fault-tolerant magnetic bearing control system architecture |
July 20, 1999 |
| A fault-tolerant control system for a magnetic bearing arrangement which maximizes dynamic response of the control system is disclosed. The arrangement includes a main digital signal processor responsive to rotor position/velocity signals to supply control signals to bearing control |
| 5913812 |
Steam seal air removal system |
June 22, 1999 |
| A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorpora |
