Patents Examined by Devin Hanan
  • Patent number: 7438525
    Abstract: A fan housing and a fan have stationary blades for guiding airflow. Each stationary blade has at least one airflow-guiding element extending therefrom along the circumference of the fan. The side wall of the airflow-guiding element changes the direction of the airflow so that the airflow at the outlet is fully introduced toward the heat source. Furthermore, the airflow-guiding element regulates the airflow, restrains the turbulent flow at the outlet and on the curved surface of the stationary blade, decreases the noise arising from the turbulent flow, and prevents foreign matter from entering the fan housing so as to protect the inside elements thereof.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: October 21, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Pei-Yu Chang, Tsu-Liang Lin, Wen-Shi Huang
  • Patent number: 7419358
    Abstract: A cellular wheel sluice for the feeding of hot bulk material with stabilization of the radial play between the web ends of the cellular wheel and the wall of the housing borehole by means of the combination of materials of different thermal expansion coefficients, whereby for stabilization of the radial play between the walls of the cellular wheel and the case wall its changes of diameter caused by heat are compensated. End strips used for sealing the gap, in their radial expansion, are fixed in a retention body with a low thermal expansion coefficient and therefore are always kept at a temperature-independent constant external diameter from the cellular wheel shaft.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: September 2, 2008
    Assignee: Zeppelin Silos & Systems GmbH
    Inventor: Dieter Heep
  • Patent number: 7416385
    Abstract: A housing for a blower, fan or pump or turbine, the housing adapted to be associated with a rotor adapted in use to cooperate with fluid flowing through the housing wherein the housing comprises a shroud for guiding the fluid moving in association with the rotor, the rotor having at least one vane adapted to cooperate with the fluid to drive or to be driven by the fluid, wherein the shroud is configured to promote vortical flow of the fluid through the housing.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 26, 2008
    Assignee: Pax Streamline, Inc.
    Inventor: Jayden David Harman
  • Patent number: 7413402
    Abstract: An electrical apparatus comprises a casing and a fan-fastening base. The casing has a first opening, at least one second opening and a first connecting portion. The second opening connects to a first side of the first opening. The fan-fastening base has at least one hook portion, a first surface and a second connecting portion. At least one fan is fastened to the first surface of the fan-fastening base. The hook portion buckles in the second opening. The first surface of the fan-fastening base faces to the first opening and the second connecting portion connects to the first connecting portion.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: August 19, 2008
    Assignee: Asustek Computer Inc.
    Inventors: Chi-Jen Kang, Jui-Yao Shih
  • Patent number: 7410344
    Abstract: A brake system for a ram air turbine (RAT) causes the RAT to slow or lock if the RAT achieves an over-speed condition with a centrifugal force operated trigger system that actuates a compression type brake pack to slow or lock the turbine hub.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: August 12, 2008
    Assignee: Hamilton Sundstrand Corporation
    Inventors: William E. Seidel, David N. Chapman
  • Patent number: 7407365
    Abstract: The present invention relates to a cooling arrangement in which a fractal passage network is provided incorporating several passage stages. Each passage stage 4, 5, 6, 7 has substantially the same passage cross-section for consistency with other passage stages to facilitate flow pressure control across the fractal passage network. Normally, the length of passages in each passage stage are also specifically determined in order to achieve a consistent flow pressure control. The arrangement is particularly utilized with regard to cooling within turbine engine components such as blade aerofoils.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: August 5, 2008
    Assignee: Rolls-Royce PLC
    Inventor: Alec George Dodd
  • Patent number: 7407364
    Abstract: A two-stage radial compressor having a ported second-stage shroud, forming a passive surge control system. Thus, some proportion of the fluid is allowed to flow between the second-stage of the compressor in the vicinity of the impeller blade tips, through a port in the shroud into an upstream portion of the compressor flow path that leads into the second-stage impeller inlet. The fluid is allowed to flow in either direction, depending on the pressure difference existing between the two locations. Surge margin at higher pressure ratios is significantly increased by the ported second-stage shroud.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: August 5, 2008
    Assignee: Honeywell International, Inc.
    Inventors: Steve Don Arnold, Kristian N. Dullack, David A. Calta, Glenn F. Thompson
  • Patent number: 7402026
    Abstract: A turbine exhaust thin strut includes an airfoil section having 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: Grant
    Filed: March 2, 2006
    Date of Patent: July 22, 2008
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Sami Girgis, Krishan Mohan, Mona El-Fouly
  • Patent number: 7399161
    Abstract: A centrifugal fan includes a hub and an impeller. The impeller is composed of a plurality of blades mounted around an outer circumference of the hub. The paraxial side of the blade forms a backward leaning structure, while the non-paraxial side thereof forms a forward leaning structure. A chamfer structure also can be formed at a paraxial side of each blade to enlarge the air inlet of the fan. Each blade further includes a protrusion, which is located at a side opposite to the inlet and extends toward a center of the hub, to increase the airflow rate through the fan motor. The centrifugal fan further includes an anti-decompression cap connected to an inlet side of the impeller to prevent an axial flow of the intake air from decompression.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: July 15, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Yu-Chien Kao, Tsu-Liang Lin, Kuo-Cheng Lin, Wen-Shi Huang
  • Patent number: 7399162
    Abstract: A fluid turbine, such as a wind or hydro turbine, for generating electrical power, the turbine having a rotor assembly comprising a hub, a rim and a plurality of tensioned cable members joining them together, the cable members being grouped into sets to define a plurality of supports for individual skin members to create a plurality of lightweight blade members.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: July 15, 2008
    Inventor: Herbert L. Williams
  • Patent number: 7390162
    Abstract: A rotary ram compressor for use in gas turbine engines and the like, having a plurality of vanes attached to discs, with the opposing parts of each two adjacent vanes and the opposing parts of the disks' surfaces confined between the opposing parts of the surfaces of the two adjacent vanes defining a channel in-between. Each channel is formed of two successive freely communicating portions: a first diverging inlet portion; and a second constant cross-sectional area outlet portion. In operation, gases are rammed into the first diverging inlet portion of the channel and are gradually displaced to the second constant cross-sectional area outlet portion of the channel, while being diverged, resulting into a rise in the static pressure energy of the gases, followed by smoothening of the stream of flow of the pressurized gases within the second constant cross-sectional area outlet portion of the channel.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: June 24, 2008
    Inventor: Essam T. Awdalla
  • Patent number: 7387496
    Abstract: A fan assembly and impeller thereof. The fan assembly includes a plurality of blades and a hub. The hub includes an upper surface and a center point. The blades have bottom portions arranged in a circle on the upper surface with respect to the center point.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: June 17, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Te-Fu Chen, Tsung-Yu Lei, Kuo-Cheng Lin, Wen-Shi Huang
  • Patent number: 7387494
    Abstract: A bucket to wheel dovetail attachment includes axially spaced radially extending wheel fingers having discrete sections of decreased axial thickness in a radial outward direction with transition fillets between sections of different thicknesses. The wheel fingers define wheel finger slots for receiving correspondingly shaped bucket dovetail fingers. Pins interconnect the buckets and rotor wheel. The slot bottoms likewise have fillets. The fillets on the wheel fingers and slot bottoms have a blend of different radii with the larger radii outward of the smaller radii to reduce stress concentrations and to avoid stress corrosion cracking in steam turbine applications.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: June 17, 2008
    Assignee: General Electric Company
    Inventors: Gary Edward Yehle, Thomas Joseph Farineau, Yavuz Kadioglu
  • Patent number: 7384241
    Abstract: To provide a method of forming a fan with ring in one piece from a single metal plate and to provide the fan formed using the method, the metal plate is plastically worked into a shallow pan shape so as to form a cylindrical ring portion 1 on the periphery. A boss portion 2 is then formed at the center of the bottom portion of the pan shape, cutting all portions, except for part of the front end edge along the radius of each of blade portions 3 and part of the edge of the ring portion 1 for use as connection portions 4 so that the plurality of radial blade portions 3 are slit and formed.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: June 10, 2008
    Assignee: Toyo Radiator Co., Ltd.
    Inventors: Kazuhiro Watanabe, Takahiro Kawabe
  • Patent number: 7384236
    Abstract: The exhaust-gas turbine comprises a turbine casing, a shaft rotatably mounted in a bearing housing, a turbine wheel arranged on the shaft, and a heat-protection wall, the heat-protection wall defining with the turbine casing an inflow passage leading to the turbine wheel. The heat-protection wall has two seatings, the first seating resting on the bearing housing and the second seating resting on the turbine casing. If the heat-protection wall becomes hot, the two seatings are pressed against the bearing housing and the turbine casing. The turbine casing is pressed outward in the radial direction. Centering of the heat-protection wall and thus also of the turbine casing is ensured by the radially inner seating of the heat-protection wall.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: June 10, 2008
    Assignee: ABB Turbo Systems AG
    Inventors: Marcel Meier, Tobias Gwehenberger, Marcel Zehnder, Anton Meier
  • Patent number: 7381030
    Abstract: A vertical axis wind turbine assembly, such as a Savonius, typically mounted on a watercraft, utilizes a number of different shroud configurations to substantially preclude rotation when docked. Collapsible “curtains” mounted above the wind engaging elements, pre-defined shape or inflatable bladder inserts for convex volumes of the turbine rotor, pull over sheet material covers for the convex volumes, and a wrap-around flexible sheet, each may be utilized as shrouds. A human or wind powered boat is provided with an adjustable pitch propeller which includes cams mounted on propeller blades and movable by an operator-controlled sleeve to the desired position for a positive or negative pitch. The wind turbine may comprise rotor stages of different hand, rotating in opposite directions, and having substantially concentric shafts operatively connected to oppositely rotating propellers, for driving the boat forward.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: June 3, 2008
    Inventor: Robert A. Vanderhye
  • Patent number: 7377743
    Abstract: A turbine nozzle includes a mid vane mounted between a pair of end vanes in outer and inner bands. The mid vane includes a first pattern of film cooling holes configured to discharge more cooling air than each of the two end vanes having respective second patterns of film cooling holes.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: May 27, 2008
    Assignee: General Electric Company
    Inventors: David Allen Flodman, Jason David Shapiro, Michael Peter Kulyk
  • Patent number: 7374401
    Abstract: A turbine airfoil a plurality of cooling holes formed in the external surface of the airfoil in fluid communication with a cooling circuit. The cooling holes have a metering section and a diffuser section opening to the external surface of the airfoil. The diffuser section has top, bottom and opposed side walls, where at least the opposed side walls and one or the other of the top and bottom walls of the diffuser section have a downstream diverging, bell-shaped configuration for achieving a flow of the cooling film from the cooling circuit with enhanced spread, enhanced attachment and less turbulence to a downstream surface of the airfoil local to each respective cooling hole.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: May 20, 2008
    Assignee: General Electric Company
    Inventor: Ching-Pang Lee
  • Patent number: 7367779
    Abstract: A single stage low pressure turbine vane includes an airfoil having 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: Grant
    Filed: March 2, 2006
    Date of Patent: May 6, 2008
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Sami Girgis, Panagiota Tsifourdaris
  • Patent number: 7367123
    Abstract: A damper pin for a turbine bucket includes an elongated main body portion of substantially uniform cross-sectional shape having opposite ends, one only of said opposite ends coated with a corrosion and oxidation-resistant coating.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: May 6, 2008
    Assignee: General Electric Company
    Inventors: Gary Michael Itzel, Ariel Caesar-Prepena Jacala, Doyle C. Lewis, Kathleen B. Morey, David V. Bucci, Ganjiang Feng