Assignee: General Electric Canada Inc.

Location: Mississauga, CA
No. of patents: 40

Number	Title	Issue Date
7154057	Telescopic switch A high voltage, high current telescopic disconnect switch suitable for use in isolated phase bus duct has two fixed conductors and a movable telescopic conductor coaxially disposed within the first fixed conductor and movable to a closed position bridging the first ...	12/26/2006
7114918	Fish friendly hydraulic turbine distributor A hydraulic turbine has a distributor located between the scroll of the turbine and its runner. The distributor has upper and lower stay ring portions with stay vanes extending therebetween. A plurality of movable wicket gates control flow of liquid through the dist...	10/03/2006
7091431	Disconnect switch A switch has a first electrical terminal, a second electrical terminal spaced from the first electrical terminal and an elongate conductive switch blade for bridging the terminals. The switch blade has a first end portion pivotally connected with the first electrica...	08/15/2006
7044452	Hydraulic turbine draft tube deflector with enhanced dissolved oxygen A deflector for use in a hydraulic turbine is adapted to be mounted relative to a vertically extending wall of the draft tube. The deflector has an upstream plate and a downstream plate. The upstream plate is positioned to extend downwardly and outwardly from the wa...	05/16/2006
6987344	High power rotary transformer with bus duct assembly A rotary transformer has a bus duct assembly that extends through the hollow shaft of a rotary transformer from collector or slip rings positioned above a drive motor for the rotary transformer to end windings of the rotor positioned most remote from the drive motor...	01/17/2006
6971843	Hydraulic turbine draft tube with enhanced dissolved oxygen A hydraulic turbine has a gas distribution manifold mounted to an inside wall of a draft tube downstream from a turbine runner. The gas distribution manifold extends at least substantially around the first inside wall of the draft tube. The gas distribution manifold...	12/06/2005
6969925	Ship lock electrical energy generation A ship lock utilizes a hydraulic turbine and/or pump-turbine to regulate the discharge flow rates through the ship lock to an approximate constant value during the majority of the water transfer cycle resulting in a diminishing of total energy of head losses and to ...	11/29/2005
6949858	Insulated code stud for rotor and stator laminations An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine is adapted to pass through holes contained in laminations of the core structure. The insulated core stud has a central portion and a first layer ...	09/27/2005
6903482	Electrical current collector cleaning and cooling for high voltage rotating machines An electrical current collector system has an electrically conductive slip ring mounted to a rotatable shaft and a fixed conducting ring assembly forming a partially enclosed AC high voltage electrical current conductive ring channel in which slip ring contacting me...	06/07/2005
6867527	Method and apparatus for reducing dynamo-electric machine vibration A method of fabricating a dynamo-electric machine rotor is provided. The method includes forming a plurality of laminations, such that a plurality of openings extend through the laminations between an outer peripheral edge and an inner peripheral edge arcuately spac...	03/15/2005
6854958	Hydraulic turbine with enhanced dissolved oxygen A hydraulic turbine is adapted to introduce oxygen into a water flowing through a water passageway of a turbine. The turbine has a circumferential chamber formed between a rotating band and a stationary discharge ring. The chamber has a gas admission aperture for re...	02/15/2005
6837644	Dual shaft and rotating machine coupling A dual shaft and rotating machine coupling has a first rotatable shaft, a second rotatable shaft and a rotating machine rotor coupling. The first rotatable shaft has a first shaft connecting flange radially extending outwardly therefrom. The second rotatable shaft i...	01/04/2005
6768244	Stator, dynamoelectric machine, and methods for fabricating same A dynamoelectric machine includes a stator having teeth fabricated from a non-magnetic material and containing at least one embedded conductor. The teeth are unitary with a back portion that is mounted to a stator back iron. Permeance variations induced by a stator ...	07/27/2004
6750400	Graded electric field insulation system for dynamoelectric machine A groundwall insulation system for use in dynamoelectric machines carrying voltage above 4 kV, and preferably in the order of 13.8 kV, or higher has two layers of insulation wound onto the conductors of the high voltage winding. The first layer of insulation has a f...	06/15/2004
6719227	Grinding mill and methods for fabricating same A method for fabricating a gearless grinding mill motor includes fabricating a plurality of linear stator portions and assembling a grinding mill stator from the linear stator portions. ...	04/13/2004
6677532	Isolated phase bus duct joint assembly An isolated phase bus duct joint assembly couples together first and second phase bus duct sections where each section has an interior bus conductor surrounded by an outer housing. The joint assembly couples end portions of the interior bus conductor and ...	01/13/2004
6588933	Thrust bearing A thrust bearing for a rotating machine has a rotating ring and a bearing shoe for use in a non-filled oil chamber that permits oil flow through the bearing shoe. The oil flows out a leading recessed groove in the bearing shoe and across the bearing shoe ...	07/08/2003
6552452	Dynamoelectric machine rotor ventilation A dynamoelectric machine has a stator member, a rotor member, a first shroud and a second shroud. The first shroud and the second shroud members are mounted to the rotor adjacent respective first and second end portions of the rotor for rotation with the ...	04/22/2003
6300701	Rogowski coil method of determination of bearing lubrication in dynamoelectric machines It is possible to monitor the performance of a lubrication system performance of a Dynamoelectric Machine (DEM) by observing the electric current flowing in the DEM shaft. Suitable Rogowski coils are mounted around the shaft of the rotor of a DEM just inb...	10/09/2001
6218757	Minimizing shaft currents in dynamoelectric machines Some dynamoelectric machines develop shaft E.M.F.'s during operation which lead to circulation currents in the shaft of the machine. The shaft current will attempt to flow through the bearings of the machine, unless some action is taken to prevent or limi...	04/17/2001
6205895	Internal rotary tube cutter A tube cutter designed for cutting a pipe where access is limited to the interior of the tube only. A rotatable cutter head mounted at the end of an elongated drive shaft carries a plurality of cuffing wheels. The tube cutter is inserted into a tube to be...	03/27/2001
6139657	Formation of a zirconium-beryllium eutectic layer on a zirconium alloy substrate or a titanium-beryllium eutectic on a titanium alloy substrate This invention relates to the production of a useful eutectic layer formed on a zirconium alloy or a titanium alloy substrate. The layer is formed by the surface contact with a beryllium strip being held in intimate contact with the surface of the zirconi...	10/31/2000
5989702	Sandwich insulation for increased corona resistance A sandwich type insulation for electrical machinery comprising a laminate of a polymeric material such as polyimide which contains particles of an inorganic corona resistant material, said polymeric material being bonded to mica paper consisting of mica, ...	11/23/1999
5974924	Cutting appliance for large cylindraceous objects An internally expanding cutting device is used for severing large cylindraceous objects in two. The device comprises a spider mechanism in which a series of radially extending arms are attached to a central hub. The spider is arranged to be mounted on a b...	11/02/1999
5973269	Multi-layer insulation for winding elements of dynamoelectric machines (D.E.M.s) An insulation system for the windings of a dynamoelectric machine is described wherein a bundle of insulated conductors is provided with layers of groundwall insulation. The innermost layer of groundwall insulation has superior corona discharge resistant ...	10/26/1999
5939805	Stator shield for a fanless salient pole machine A fanless salient pole DEM is provided with annular shrouds fitted to the stator ends in close juxtaposition to the rotor to isolate the rotor from atmospheric pressure during operation of the DEM....	08/17/1999
5886443	Spark suppression of induction type rotors of dynamoelectric machines A rotor for an induction motor of the squirrel cage type wherein the rotor bars are exposed to a resilient anti-sparking compound in the rotor slots of the machine. The rotor bars are provided with a longitudinal slot to permit the insertion of the anti-s...	03/23/1999
5822845	Method of retaining a winding element in a stator slot Stator bars and stator coils (winding elements) for a large dynamoelectric machine which are to be permanently placed in the slots of the magnetic core of the machine are wrapped so as to be surrounded on three sides with an elongated sheet of an elastome...	10/20/1998
5757094	Ventilation system for an AC machine having overhanging salient poles with juxtaposed shrouds A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient p...	05/26/1998
5287840	Cam sections for a "V"-type diesel engine A unit cam section for each bank of cylinders in a "V"-type engine has a predetermined cam orientation between the fuel cam and the air cam and between the fuel cam and the exhaust cam wherein a first unit cam section has a fuel cam to air cam angle of be...	02/22/1994
5237899	Blade for cutting cylindrical structures A blade for cutting cylindrical structures is disclosed. The working face of the blade is adapted for piercing and cutting. The blade of the invention works to cut cylindrical structures without substantially deforming the wall of the structure adjacent t...	08/24/1993
5226804	Propeller blade configuration A propeller type runner is described in which the leading edge of each blade "leans" forward from the root in the direction of rotation to reduce cavitation and increase efficiency. The "lean" provided to each blade of a five blade design is such that the...	07/13/1993
5109208	Current limiting electrical reactor There is disclosed a current limiting electrical reactor that efficiently uses space. The reactor includes a supporting core with a circular periphery where the conductor is wound about the periphery of the coil in a convoluted spiral that spirals lateral...	04/28/1992
5086246	Salient pole rotor for a dynamoelectric machine A dynamoelectric machine has a stator with a stator core and a plurality of spaced apart radially extending ventilation ducts. A rotor mounted for rotation within the stator has a shaft with a plurality of salient poles. Each salient pole has a winding on...	02/04/1992
5065058	Shroud for dynamoelectric machine A ventilation cooling system for a dynamoelectric machine is disclosed, which provides improved cooling efficiency and reduction in windage loss. A first stream of cooling gas is directed into the spider of the machine and transversely through ventilation...	11/12/1991
5020649	Clutch or brake inching arrangement A dual clutch for an inching arrangement in a load sharing drive which has two or more driving motors connected to a load through a dual clutch. The clutch has two (or more) clutch units mounted side by side on a driving shaft with an inflatable, flexible...	06/04/1991
4989921	Mine hoist brake regulator There is described a hydraulic friction brake for controlling deceleration of a mine hoist which brake includes a pump continually circulating hydraulic braking fluid through a valve. The valve regulates the flow of hydraulic fluid to control braking pres...	02/05/1991
4958380	Fault current limiter for DC motor drive system There is disclosed a direct current motor drive system comprising a direct current motor operable in a forward motoring mode receiving current from a power source and in a reverse inversion mode providing inversion current to the power source. The drive s...	09/18/1990
4922146	Cooling arrangement for a DC motor A commutator type, prior art dynamoelectric machine normally has an inlet for cooling air at the end of the machine remote from the commutator. The air flows from the inlet through axially extending passages in the rotor, outwardly through spaced radial d...	05/01/1990
4906883	Arrangement for edgewise wound pole winding A winding arrangement for a rotor pole in a synchronous machine having edgewise wound conductors forming a coil for the pole, the pole having at each end an end plate to provide curved corner portions for the winding. The conductor has a slot extending th...	03/06/1990

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Assignee: General Electric Canada Inc.