Patents Issued in December 30, 2010
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Publication number: 20100329866Abstract: A variable control rotor hub is provided for harnessing kinetic energy of a water current flow. The hub comprises a hub body that is configured to rotate about a rotational axis, an energy storage reservoir entirely contained in the hub body, and a blade driver that is configured to effectuate rotor blade movement using energy received from the energy storage reservoir.Type: ApplicationFiled: May 27, 2010Publication date: December 30, 2010Inventor: TURNER HUNT
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Publication number: 20100329867Abstract: A drivetrain for a wind turbine includes a gearbox and a generator. The gear box includes a housing and an output shaft that is rotatably coupled within the housing, wherein the gearbox further includes at least one bearing positioned between the housing and the output shaft. The generator includes a stator coupled to the housing such that the stator is positioned radially outward from the housing, and a rotor coupled to the output shaft such that the rotor is positioned radially inward from the stator.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Inventors: Priyangu C. Patel, Edwin Hidding, Gary R. Barnes, Patrick Lee Jansen, Adam Daniel Minadeo, Stephen B. Johnson, James H. Madge, Blake Weldon Wilson, Eric Steven Buskirk, Murtuza Lokhandwalla, Jacob Johannes Nies
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Publication number: 20100329868Abstract: A planetary gear transmission unit includes a planet carrier which supports and locates circumferentially spaced pairs of planet gears, and at least one planet shaft. The planetary gear transmission unit further includes a planet shaft locking mechanism between the at least one planet shaft and the planet carrier for preventing the at least one planet shaft from rotating around its own axis, the planet shaft locking mechanism being provided between an axial end face of the planet shaft and the planet carrier in a direction substantially parallel to the planet shaft. An advantage of the planetary gear transmission unit is that rotation of the planet shaft relative to its axis in the planet carrier is prevented. The unit results in a free of wear contact between planet shaft and planet carrier, thereby allowing all degrees of freedom of the planet shaft without disturbing the load distribution between the planet gears of a pair on one planet shaft.Type: ApplicationFiled: June 24, 2010Publication date: December 30, 2010Applicant: HANSEN TRANSMISSIONS INTERNATIONAL, naamloze vennootschapInventors: Goesaert Ben, Loenders Jo, Bogaert Roger, Lurquin Johan, Smook Warren
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Publication number: 20100329869Abstract: A wind turbine generator that is capable of completely eliminating heater heating of lubricating-oil piping or that is capable of reducing the number of heater heating locations to the minimum requirement is provided. A wind turbine generator is provided with a lubricating system that circulates lubricating oil (L) in a lubricating-oil storage tank through lubricating-oil piping connected to a lubricating-oil pump, to lubricate a main bearing connected to the lubricating-oil piping by supplying the lubricating oil (L) thereto. This lubricating system is provided with a lubricating-oil recovery line that is formed when the lubricating-oil pump is stopped and in which the lubricating oil (L) falls naturally and is recovered in the lubricating-oil storage tank.Type: ApplicationFiled: October 17, 2008Publication date: December 30, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Yasushi Okano
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Publication number: 20100329870Abstract: The use of a shroud to surround a set of turbine blades works best when the blades are shaped to maximize the unique distribution of velocity of such a shroud. Parameters for the construction of such blades for both water and wind turbines are presented.Type: ApplicationFiled: February 12, 2009Publication date: December 30, 2010Inventor: Daniel Farb
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Publication number: 20100329871Abstract: A fan assembly for directing fluid flow in a hybrid radial and axial direction includes a backplate having an inner diameter portion and a substantially frusto-conical outer diameter portion positioned about a center axis (CL), a plurality of blades extending from the backplate, and an annular fan shroud positioned adjacent to the plurality of blades and configured for co-rotation therewith. The backplate, the plurality of fan blades and the fan shroud form a fan subassembly, and an overall depth of the fan subassembly is approximately 20-35% of an overall fan subassembly diameter (øD1).Type: ApplicationFiled: February 19, 2009Publication date: December 30, 2010Applicant: HORTON, INC.Inventors: Kevin M. Cahill, Hooshang Didandeh, Eugene Elvin Williams
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Publication number: 20100329872Abstract: A method for assembling a rotating machine includes providing a rotating element. The method also includes forming a first dovetail slot having a first axial length within a portion of a rotating element. The first dovetail slot is substantially parallel to an axial centerline of the rotating element. The method further includes forming a second dovetail slot having a second axial length within a portion of the rotating element. The second dovetail slot is substantially parallel to the axial centerline of the rotating element. At least a portion of the second dovetail slot is radially outboard of at least a portion of the first dovetail slot. The first axial length is greater than the second axial length. The method also includes enclosing at least a portion of the rotating element within at least a portion of a casing.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Inventor: Donald Joseph Kasperski
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Publication number: 20100329873Abstract: A fan blade retaining and sealing ring assembly for an aft side of a bladed disk assembly is disclosed herein. The ring assembly includes an inner ring operable to prevent aft movement of a fan blade positioned in a slot formed in the blade disk. The ring assembly also includes an outer ring operable to seal against a platform of the fan blade. The inner ring and the outer ring are formed from different materials.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Inventors: Daniel Ruba, Matthew Scott, Thomas Bowman
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Publication number: 20100329874Abstract: A two-stage high pressure turbine includes a second stage blade having an airfoil with a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.Type: ApplicationFiled: April 1, 2010Publication date: December 30, 2010Inventor: Panagiota Tsifourdaris
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Publication number: 20100329875Abstract: An airfoil for use in a rotor assembly is disclosed, the airfoil having a tip-cutter located on a sidewall near a tip portion, wherein the tip-cutter is capable of removing a portion of an abradable material during a tip rub. In another embodiment, an airfoil has a tip-grinder located on the tip portion, wherein the tip-grinder capable of removing a portion of an abradable material during a tip rub. In another embodiment, an airfoil has a tip-rake that facilitates reducing loading induced to said airfoil during tip rubs.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Inventors: Nicholas Joseph Kray, David W. Crall, Daniel E. Mollmann, Donald Lee Gardner, Marcia Boyle Johnson, Haward P. Weaver, Max Robert Farson
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Publication number: 20100329876Abstract: Gamma prime nickel-base superalloy and components formed therefrom. The alloy contains, by weight, 11.3 to 13.3% cobalt, 12.4 to 15.2% chromium, 2.1 to 2.7% aluminum, 3.6 to 5.8% titanium, 3.5 to 4.5% tungsten, 3.1 to 3.8% molybdenum, 0.0 to 1.2% niobium, 0.0 to 2.3% tantalum, 0.0 to 0.5% hafnium, 0.040 to 0.100% carbon, 0.010 to 0.046% boron, 0.030 to 0.080% zirconium, the balance nickel and impurities, wherein the Nb+Ta content is 0.0-3.5%.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Kenneth Rees Bain, David Paul Mourer
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Publication number: 20100329877Abstract: Method for producing a forging from a gamma titanium aluminum-based alloy. The method includes heating at least a portion of a cylindrical or rod-shaped starting or raw material to a temperature of more than 1150° C. over a cross section of the at least a portion. The at least a portion corresponds to points at which the forging to be shaped has volume concentrations. The method also includes deforming the at least a portion through an applied force to form a biscuit having different cross sectional areas over a longitudinal extension of the biscuit, and finishing the forging through a second heating to a deformation temperature and at least one subsequent step.Type: ApplicationFiled: June 3, 2010Publication date: December 30, 2010Applicant: BOEHLER SCHMIEDETECHNIK GmbH & Co. KGInventors: Sascha KREMMER, Heinz Romen KIERNER, Wilfried WALLGRAM
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Publication number: 20100329878Abstract: The present invention relates to an aerofoil (20) comprising a leading edge portion (22) and a flexible thin-walled portion (26) that is rearwards of the leading edge portion, defining a cavity (28), and a shape-forming insert (30) for inserting into the cavity. The shape-forming insert at least partly defines the profile of the aerofoil such that changing the shape of the insert changes the profile of the aerofoil.Type: ApplicationFiled: June 7, 2010Publication date: December 30, 2010Applicant: ROLLS-ROYCE PLCInventors: Kristofer J. BOTTOME, Matthew P. Jevons
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Publication number: 20100329879Abstract: A horizontal axis wind turbine blade comprises a leading edge surface, a trailing edge surface, an upper camber surface extending between the leading edge surface and the trailing edge surface, and a lower camber surface extending between the leading edge surface and the trailing edge surface. Notably, the trailing edge surface includes a plurality of air flow mixing lobes. An ejector blade may be located above the upper camber surface and behind the trailing edge surface. The ejector blade may include an ejector blade trailing edge surface that includes a plurality of ejector blade mixing lobes. The ejector blade mixing lobes may include a plurality of ejector blade high energy mixing lobes and ejector blade low energy mixing lobes. Advantageously, the mixing lobes allow for a reduced wakes behind the HAWT and thus decrease the requisite separation distance between HAWTs in a wind farm.Type: ApplicationFiled: June 3, 2010Publication date: December 30, 2010Inventors: Walter M. Presz, JR., Michael J. Werle, Thomas J. Kennedy, III, William Scott Keeley
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Publication number: 20100329880Abstract: A protective hybrid composite for a rotor blade is based on the use of tape cast ceramic layers densified by pre-ceramic polymer infiltration methods and laminated together with polymer matrix composite prepregs, with or without an embedded metallic mesh, to form a conforming helicopter blade cladding that is laminated to the blade surface for added erosion protection. The hybrid composite is fabricated to net shape and laminated to the blade using either an adhesive or a polymer composite prepreg inner layer. Installation is accomplished by a standard composite fabrication method of vacuum bagging the blade while the system is laminated to its surface. Repair methods based on removal of ceramic tiles is facilitated by incorporation of a metallic mesh element laminated beneath the ceramic tiles that can be used to heat the tile and decrease its adhesion strength.Type: ApplicationFiled: December 30, 2009Publication date: December 30, 2010Applicant: TELEDYNE SCIENTIFIC & IMAGING, INC.Inventors: Janet B. Davis, David B. Marshall, Olivier H. Sudre, Sergio dos Santos e Lucato
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Publication number: 20100329881Abstract: A lightning protection system for a wind turbine blade or aircraft wing includes a glass-reinforced fiber or carbon-reinforced wind turbine blade or aircraft wing having a tip region, a suction side, a pressure side, a leading edge and a trailing edge. A substantially planar sheet of conductive or semi-conductive material is disposed internal to the blade tip region or wing tip region and between the suction side and pressure side. The sheet operates during a lightning discharge to form an electric field control mechanism causing the lightning discharge to attach to the tip region. The sheet is in electrical communication or galvanic connection with a conductive or semi-conductive path such that the electric field control mechanism and the path together operate to protect the wind turbine blade or aircraft wing from damage caused by the lightning strike in the tip region of the wind turbine blade or aircraft wing by controlling an electric field in the tip region caused by the lightning strike.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Yaru Najem Mendez Hernandez, Robert Roesner
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Publication number: 20100329882Abstract: Ceramic coatings for a component that is subjected to high temperatures, especially for a turbine blade are provided. The ceramic coatings contain one or more compounds that are selected from alkaline earth silicates, ZrV2O7 and Mg3(VO4)2. A layer system including at least one coating of the ceramic coating is also provided.Type: ApplicationFiled: December 4, 2008Publication date: December 30, 2010Inventors: Jens Birkner, Knut Halberstadt, Eckart Schumann, Werner Stamm
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Publication number: 20100329883Abstract: A gamma prime precipitation-strengthened nickel-base superalloy and method of forging an article from the superalloy to promote a low cycle fatigue resistance and high temperature dwell behavior of the article. The superalloy has a composition of, by weight, 16.0-22.4% cobalt, 6.6-14.3% chromium, 2.6-4.8% aluminum, 2.4-4.6% titanium, 1.4-3.5% tantalum, 0.9-3.0% niobium, 1.9-4.0% tungsten, 1.9-3.9% molybdenum, 0.0-2.5% rhenium, greater than 0.05% carbon, at least 0.1% hafnium, 0.02-0.10% boron, 0.03-0.10% zirconium, the balance nickel and incidental impurities. A billet is formed of the superalloy and worked at a temperature below the gamma prime solvus temperature of the superalloy so as to form a worked article, which is then heat treated above the gamma prime solvus temperature of the superalloy to uniformly coarsen the grains of the article, after which the article is cooled to reprecipitate gamma prime.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: David Paul Mourer, Kenneth Rees Bain
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Publication number: 20100329884Abstract: A turbine rotor blade which is enhanced in erosion resistance and reduced in stress corrosion cracking sensitivity is provided. When a blade tip end of the turbine rotor blade is hardened by heat treatment, hardness at an outer circumferential side in a radial direction is made higher than hardness at an inner circumferential side, and thereby, enhancement in erosion resistance and reduction in stress corrosion cracking sensitivity are made compatible with each other all over in a blade length direction.Type: ApplicationFiled: June 23, 2010Publication date: December 30, 2010Inventors: Kunio ASAI, Takeshi Kudo, Hideo Yoda, Katsumi Tanaka
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Publication number: 20100329885Abstract: A ceiling fan comprising bracket components which are easily and conveniently attachable in a suitable position by one person thru simple operation and adjustment of mechanical parts. Attachment components are removably secured to a ceiling plate connected to a house circuit in an initial room then capable of easy removal therefrom and attachable to a ceiling plate installed in another room. A fan circuit is connectable to a house circuit by simple plug members and fan unit is quickly positionable into a secure position by position against and rotation of cooperable components with ceiling plate.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Inventors: Jerry D. Criner, Jodi B. Young
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Publication number: 20100329886Abstract: A stopping structure of a fan is described. An opening is opened on a surface of a frame, and a bearing support is disposed within the frame. A blade wheel is accommodated within the frame and pivoted to the bearing support. Then, a stopper is disposed at the frame corresponding to the opening, such that a distance between the stopper and the blade wheel is smaller than a distance between blades of the blade wheel and the frame. When the blade wheel moves outwards relative to the bearing support, the blade wheel is stopped by the stopper to prevent the blades from interfering with the frame, and a reactive force is generated at an axial center position of the blade wheel, so that an axle of the blade wheel is maintained on the same central axis as the bearing support when the axle restores an original position thereof.Type: ApplicationFiled: October 20, 2009Publication date: December 30, 2010Applicant: MICRO-STAR INTERNATIONA'L CO., LTD.Inventors: Hsiang Hsing Sung, Kuo Huang Lu, Cheng Lung Chen, Ting Lun Liao
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Publication number: 20100329887Abstract: A gas turbine engine component coupled with a temperature member configured to assist in maintaining a temperature of the gas turbine engine component below a predetermined temperature. The temperature member can take the form of a phase changeable material that can change phase by melting or vaporization, among potential others. A variety of gas turbine engine components can be coupled with the temperature member.Type: ApplicationFiled: October 7, 2009Publication date: December 30, 2010Inventor: Andy Eifert
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Publication number: 20100329888Abstract: A method is disclosed that includes providing a turbomachinery blade having an airfoil connected to a platform in a root region of the turbomachinery blade. The airfoil has a trailing edge extending from the root region to a tip distal from the root region. The method further includes forming a blind relief hole in the platform proximate the trailing edge of the airfoil, and forming a plurality of cooling holes in the platform.Type: ApplicationFiled: April 20, 2010Publication date: December 30, 2010Inventors: Gregory M. Nadvit, Andrew D. Williams, Leone J. Tessarini, Michel P. Amal
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Publication number: 20100329889Abstract: An assembly controls the liquid level in a vessel in which a submersible pump is disposed. The assembly has a switch housing and a float housing, arranged proximate to each other. A switch in the switch housing selectively energizes a motor associated with the pump. When a float disposed in the float housing moves in response to a change in the liquid level of the vessel, the movement is coupled to the switch by a pair of magnets arranged in attractive relationship to each other. One of the magnets is in the switch housing and the other is in the float housing. The magnets interact by providing force fields that acts through a wall that separates the switch housing and the float housing. A lever on which the switch housing magnet is positioned tilts the magnets away from alignment as they approach each other, reducing the increase in attractive force therebetween.Type: ApplicationFiled: June 30, 2009Publication date: December 30, 2010Applicant: CRANE PUMPS AND SYSTEMSInventors: Chih Lin, William J. Watkins
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Publication number: 20100329890Abstract: A method of upgrading a 1,500 rpm reactor coolant pump motor having a vertically oriented rotor shaft supported by a lower guide bearing disposed in an oil reservoir. The method includes removing a lower guide bearing support to enhance circulation of the oil to facilitate cooling of the oil and operating the reactor coolant pump motor at 1,500 rpm without the lower guide bearing support or the oil baffle or flinger ring attached to the lower guide bearing support. The method further includes thickening a keeper to support the guide bearing.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Applicant: Westinghouse Electric Company, LLCInventors: David R. Brady, Thomas G. Loebig
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Publication number: 20100329891Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.Type: ApplicationFiled: February 5, 2010Publication date: December 30, 2010Applicant: LightSail Energy Inc.Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, JR.
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Publication number: 20100329892Abstract: A pumping system is provided which is a mobile, vehicle-mounted pumping system, such as for water or fuels, which mounts on a vehicle and may be used for various applications. The pumping system operates a drive system and control system for liquid pumps almost exclusively by hydraulic fluid pressure.Type: ApplicationFiled: June 21, 2010Publication date: December 30, 2010Inventors: Daniel R. Brantley, Ivars R. Bergs, Jeffrey J. Sietsema, Michael J. Brennan
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Publication number: 20100329893Abstract: An expansion chamber to serve ESP equipment installed on the seabed located in either a caisson or a conduit on a skid. The expansion chamber provides an external reservoir for expansion and contraction of motor oil in the ESP equipment. During operation of an ESP, the heat generated in the motor raises the temperature of the motor oil, causing it to expand. The expansion chamber is connected to the ESP equipment via oil lines that allow oil to expand into the expansion chamber when the temperature of the motor oil increases. The expansion chamber has a movable barrier therein that defines primary and secondary chamber. Oil communicates with the primary chamber. Formation fluid within the conduit surrounding the motor communicates with the secondary chamber.Type: ApplicationFiled: June 28, 2010Publication date: December 30, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: Ignacio Martinez, Dan A. Merrill
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Publication number: 20100329894Abstract: A system is provided for transmitting control signals to the internal devices of a compressor. The compressor includes a housing, a hermetic power terminal and a motor for powering the compressor. The system includes a frequency converter that is located external to the compressor housing and a frequency decoder that is positioned inside the compressor housing. The frequency converter can convert a control signal from a controller to a high frequency signal. The frequency decoder decodes and converts the high frequency signal to a control signal for an internal device of the compressor. An AC input power source provides electrical power to the motor, and power transmission lines connect the AC input power source to the hermetic power terminal. The frequency converter is electrically coupled to the frequency decoder by two power transmission lines.Type: ApplicationFiled: September 9, 2010Publication date: December 30, 2010Applicant: BRISTOL COMPRESSORS INTERNATIONAL, INC.Inventor: John W. TOLBERT, JR.
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Publication number: 20100329895Abstract: A multistage compressor installation in which compression stages utilizing centrifugal compressors are independently driven by drivers that can be electric motors configured to be controlled by a speed controller. Intercoolers are located between stages to remove the heat of compression and the stages are connected such that outlets are located opposite to inlets of the compressors and conduits connecting the intercoolers to the stages are in an in-line relationship to inhibit the formation of pressure drops between stages. The conduits connecting the stages incorporate tapered transition sections configured such that flow velocity gradually decreases towards the intercooler and gradually increases from the intercooler to the next succeeding compression stage to further inhibit pressure drops.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Inventors: ROBERT LEROY BAKER, Jeffrey Charles Goodband, Richard John Jibb, John Henri Royal
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Publication number: 20100329896Abstract: According to one embodiment, there is provided a multistage-pressure condenser, including a first condenser, a second condenser and a third condenser, which are arranged in increasing order of internal pressure, the first condenser and the second condenser each including a first partition in which perforations from which condensate obtained by condensing turbine steam by cooling water drops are formed on a cooling water inflow side of the condenser rather than at a central part thereof, and a second partition which partitions a reheating room for reheating condensate dropping from the perforations in a direction perpendicular to an inflow direction of the cooling water, and a heating-steam flow path which supplies heated steam from the third condenser to the reheating room partitioned by the first partition and the second partition.Type: ApplicationFiled: June 21, 2010Publication date: December 30, 2010Inventors: Shun YADORIHARA, Koichi Yoshimura, Takaaki Kezuka
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Publication number: 20100329897Abstract: [Object of the Invention] An object of the present invention is to provide a method for processing the valve plate of a reciprocating compressor to prevent the suction valves and/or the discharge valves of the compressor from sticking on the valve plate at the portions abutting the valve plate, the productivity thereof being higher than that of the conventional method.Type: ApplicationFiled: February 4, 2009Publication date: December 30, 2010Applicant: SANDEN CORPORATIONInventor: Junya Satou
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Publication number: 20100329898Abstract: A compressor airflow control assembly is operable to control airflow through a centrifugal compressor. The control assembly includes an air valve mounted in the airflow path to control airflow through the compressor. The control assembly also includes a controller operable to sense an airflow condition and control shifting of the air valve.Type: ApplicationFiled: April 20, 2010Publication date: December 30, 2010Applicant: ACCESSIBLE TECHNOLOGIES, INC.Inventors: Matthew Scott Dunn, Michael A. Carlson
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Publication number: 20100329899Abstract: A multi-chambered pulsation absorber for attachment over the valve cap opening of a compressor cylinder. Each chamber is in fluid communication with the valve cap opening (or cylinder internal gas passages) via an associated choke tube. Each pairing of a chamber with a choke tube is tuned, in the manner of a Helmholz resonator, to attenuate and nearly eliminate a different cylinder-related pulsation frequency, such as those resulting from internal cylinder pulsations or cylinder nozzle pulsations.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Applicant: Southwest Research InstituteInventors: Eugene L. Broerman, III, Danny M. Deffenbaugh, Robert J. McKee
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Publication number: 20100329900Abstract: A pump is disclosed which has a housing with a upper end and a lower end. A conduit is defined through the housing between the upper and the lower ends. The pump includes an impeller within the housing, an inlet from the conduit to the impeller and an outlet from the impeller. Portions of the impeller may be distributed around the conduit. The pump may also include a motor coupled to the impeller. Portions of motor may also be distributed around the conduit. The outlet from the impeller may be independent of the conduit.Type: ApplicationFiled: September 8, 2010Publication date: December 30, 2010Applicant: Star Oil Tools Inc.Inventor: Marcel OBREJANU
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Publication number: 20100329901Abstract: A stator device includes a base having a shaft tube receiving a bearing. The shaft tube includes a top end having at least one groove. A stator unit is mounted around an outer periphery of the shaft tube. The stator unit includes at least one limiting member extending through the at least one groove into the shaft tube. The at least one limiting member prevents the bearing from disengaging from the shaft tube, enhancing assembling convenience. The stator can be coupled with a rotor to form a motor with enhanced assembling convenience and enhanced rotational stability. The base can be interconnected by connecting members to a housing having air inlet and outlet sides. Vanes can be formed on the hub of the rotor to form an impeller. Thus, a heat-dissipating fan can be formed from the stator device.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Inventor: Alex Horng
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Publication number: 20100329902Abstract: Motorized single-machine multi-pump apparatus and closed-loop methodology interconnected with a gas pipeline at a natural gas production well, using pressurized gas flow and differential pressure to drive a pumping system regulated by pneumatic controls using self-generated clean, low-pressure instrument air. The apparatus is connected to the gas flow line and the outlet is connected back into the gas flow line at lower pressure, creating a differential pressure corresponding to the source of motive power for actuating a piston which is directly connected to a plurality of plungers. This plurality of plungers is alternately pushed into and pulled out of corresponding plunger-cylinders for creating an integral drive and pump system prerequisite for gas well site pumping operations. Instead of venting to the atmosphere, well gas is returned to the flow line whereupon only clean air from the self-generated instrument air circuit is vented into the atmosphere.Type: ApplicationFiled: June 26, 2009Publication date: December 30, 2010Applicant: PATTON ENTERPRISES, INC.Inventors: William B. Thrasher, Mark V. Patton
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Publication number: 20100329903Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.Type: ApplicationFiled: June 25, 2010Publication date: December 30, 2010Applicant: LightSail Energy Inc.Inventors: Danielle A. FONG, Stephen E. CRANE, Edwin P. BERLIN, JR., AmirHossein POURMOUSA ABKENAR, Kartikeya MAHALATKAR, Yongxi HOU, Todd BOWERS
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Publication number: 20100329904Abstract: An electric pump comprises a stator, a rotor, and an endshield. The interface plate is fixed to the stator and is configured to couple the electric motor to a pump. The pump volute is formed as an integral portion of the endshield, thereby minimizing the axial length of the electric pump. A drainage passageway is provided on the endshield to harmlessly drain away any fluid that seeps past the pump's seals. In one embodiment of the invention, the drainage passageway is a groove that faces the stator and is configured to facilitate the evaporation of and leak fluid by channeling the fluid near the stator, which warms the fluid and thereby increases the fluid's evaporation rate.Type: ApplicationFiled: June 25, 2009Publication date: December 30, 2010Applicant: EMERSON ELECTRIC CO.Inventors: Richard J. Fadler, Robert J. Schmidt, Philip S. Johnson, Brian P. Klein, George A. Clark
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Publication number: 20100329905Abstract: A permanent magnet direct drive mud pump has a permanent magnet motor, a shaft connected to the permanent magnet motor, and a pump head connected to the end of the shaft opposite the permanent magnet motor. The permanent magnet motor has a housing, a stator positioned within the housing, and a rotor cooperative with the stator and positioned interior of the stator within the housing. The rotor is interconnectable with the shaft so that the rotational motion created by the permanent magnet motor can be directly imparted to the shaft and, accordingly, to the pump head without the use of a transmission.Type: ApplicationFiled: December 2, 2009Publication date: December 30, 2010Inventor: Kevin R. WILLIAMS
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Publication number: 20100329906Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil cheaper than a copper coil is used in the motor for the compressor, a ratio between the aluminum coil and a stator core is set, and sectional areas of main and sub slot portions of the stator core and the numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor can drastically be reduced and efficiencies thereof can be improved.Type: ApplicationFiled: October 20, 2008Publication date: December 30, 2010Inventors: Hae-Ok Jung, Dong-In Park, Ki-Seok Sung, Jae-Hun Lee, Cheol Kim, Seong-Hun Seo
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Publication number: 20100329907Abstract: Disclosed are a motor for a compressor and a hermetic compressor having the same. An aluminum coil is used in the motor for the compressor, and sectional areas of main and sub slot portions and the numbers thereof are adjusted to be suitable for usage conditions, whereby fabricating costs of the motor for the compressor and the hermetic compressor can drastically be reduced. Also, as the aluminum coil of the motor for the compressor is coupled to a lead wire in a welding manner, the breaking of the aluminum coil, which may occur when coupling the aluminum coil to the lead wire can be prevented, resulting in improvement of assembly reliability of the reciprocating compressor.Type: ApplicationFiled: October 20, 2008Publication date: December 30, 2010Inventors: Hae-Ok Jung, Seong-Hun Seo, Jae-Hun Lee
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Publication number: 20100329908Abstract: A heat exchanger to serve ESP equipment installed on the seabed located in either a caisson or skid. A hot oil line connects the base of the ESP motor with the externally located heat exchanger, allowing hot motor oil to be circulated through coils externally exposed to seawater. The heat from the oil is rejected to the seawater and the cooled oil is reintroduced to the motor via a cold oil line that communicates with the seal section. The heat exchanger arrangement reduces the temperature of an ESP motor, thus allowing the motor to operate longer and more reliably.Type: ApplicationFiled: June 28, 2010Publication date: December 30, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: Ignacio Martinez, Dan A. Merrill
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Publication number: 20100329909Abstract: A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control.Type: ApplicationFiled: February 5, 2010Publication date: December 30, 2010Applicant: LightSail Energy Inc.Inventors: Danielle A. Fong, Stephen E. Crane, Edwin P. Berlin, JR.
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Publication number: 20100329910Abstract: The invention relates to a roller pump consisting of a stator with a pump bed formed therein and a rotor for acting on a hose inserted into the pump bed in arcuate form. In accordance with the invention, the ends of the tube guided out of the pump bed cross.Type: ApplicationFiled: June 15, 2010Publication date: December 30, 2010Inventors: Manfred Baumann, Berthold Breitkopf, Elmar Huegel, Herbert Neubauer, Thomas Nuernberger, Jochen Schneider, Gerhard Spengler, Ralf Wamsiedler, Wolfgang Biesel, Christian Busse, Marco Caronna, Joerg Jonas, Reinhold Reiter, Joern Apel, Martin Lauer
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Publication number: 20100329911Abstract: A check valve for arranging between a first pressure chamber, in which a first pressure prevails, and a second pressure chamber in which a second pressure prevails. The valve comprises a valve housing on which a valve seat is formed, and comprises a blocking element which is designed in a blocking position, to close a valve opening in the region of the valve seat, in order to block a connection between the first and the second valve chambers, and is designed in an open position to release the valve opening in order to release the connection between the first and the second valve chambers. The valve seat is configured as an oblique surface, which relative to the flow direction is aligned at an angle which is greater than 15° and less than 80°. The blocking element comprises a planar blocking lobe made from an elastically deformable material which in the blocking position bears against the oblique surface, and in the open position lifts away from the oblique surface in order to release the connection.Type: ApplicationFiled: July 13, 2010Publication date: December 30, 2010Inventors: Peter Borst, Markus Engel
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Publication number: 20100329912Abstract: A variable capacity vane pump is provided, the pump having a pump control ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressures. The pump ring is moved by at least first and second control chambers, the control chambers abutting the control ring such that pressurized fluid supplied to them acts on the pump control ring to move the pump control ring to reduce the volumetric capacity of the pump. When pressurized fluid is supplied to only one control chamber, the pump operates at a first equilibrium pressure and when pressurized fluid is also supplied to the second chamber, the pump operates at a second equilibrium pressure. If desired, pressurized fluid can also be supplied only to the second control chamber to operate the pump at a third equilibrium pressure and/or additional control chambers can be provided if required.Type: ApplicationFiled: September 10, 2010Publication date: December 30, 2010Inventors: Matthew Williamson, David R. Shulver
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Publication number: 20100329913Abstract: A progressing cavity pump adapted for pumping of compressible fluids, comprising an inner rotor (1) having a number of thread-starts (Z) together with an adapted stator or outer rotor (2) provided with one extra thread-start (Z+1), wherein a number of, in principle closed pump cavities (6) are formed which are moved, during fluid conveyance, from the inlet side (A) of the pump to the outlet side (B) of the pump, at which position they become open outlet cavities (6c) exposed to the fluid pressure in a downstream pipeline, and wherein at least one passage is disposed between the outlet side (B) and the, in principle, closed pump cavity (6b) defined closest to the outlet side (B), wherein said passage is structured for intentional fluid back-flow from the outlet side (B) in a measured and approximately constant volume.Type: ApplicationFiled: September 9, 2008Publication date: December 30, 2010Inventor: Sigurd Ree
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Publication number: 20100329914Abstract: A compressor is configured to compress a refrigerant and use a lubricating oil. The compressor includes a compression mechanism configured to compress the refrigerant, a driving shaft configured to rotate about a rotation axis in order to drive the compression mechanism, a slide bearing slidably supporting the driving shaft, a first surface fixed to the driving shaft and intersecting with a line arranged in parallel to the rotation axis, a second surface facially abutted to the first surface, and a recovery space formed in the compressor. The recovery space is configured and arranged to recover the lubricating oil leaking out of bottom ends of sliding surfaces of the slide bearing and the driving shaft. The first surface and the second surface respectively continue to surfaces forming the recovery space.Type: ApplicationFiled: February 27, 2009Publication date: December 30, 2010Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masahiro Yamada, Kazuhiko Matsukawa, Hiroyuki Yamaji, Satoshi Yamamoto, Yasuhiro Murakami, Tomoko Mizuguchi
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Publication number: 20100329915Abstract: The present invention relates to a scroll compressor, with an oil-separating drive shaft, that comprises a housing a fixed scroll which is installed inside the housing, a orbiting scroll which orbits around the fixed scroll, and a drive shaft which drives the orbiting scroll. In the orbiting scroll, a discharge hole is formed. A discharge path is formed along the longitudinal direction of the drive shaft so that discharged coolant from the discharge hole flows therethrough. At least, a part of the discharge path is inclined forward from the rotary axis to the exterior. A lubrication hole is formed in the drive shaft that penetrates from the discharge path to the outer surface of the drive shaft.Type: ApplicationFiled: February 27, 2009Publication date: December 30, 2010Applicants: Doowon Technical College, Doowon Electronic Co., LTD.Inventors: Geonho Lee, Inhwe Koo