Patents Examined by Jason G Davis
  • Patent number: 11506218
    Abstract: A method for optimizing the blade axis position of a water pump under all operating conditions which includes determination of multiple calculation conditions within the range of all the operating conditions of the water pump, three-dimensional modeling and mesh generation of the calculation area of the flow field of the water pump at multiple blade angles, numerical simulation of the flow field and calculation and determination of blade hydraulic torques under multiple conditions, determination of the range of the position of the blade resultant hydraulic pressure action line and an optimal blade axis position under all the operating conditions, determination of the small region of the optimal blade axis position under all the operating conditions, determination of the optimal blade axis position, and comparison of the blade hydraulic torques before and after optimization of the blade axis position.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: November 22, 2022
    Inventors: Baoyun Qiu, Kaiming Wu, Di Liu, Jinyu Cao, Cai Zhang, Chenglong Xue, Mengfan Xu
  • Patent number: 11499567
    Abstract: The application discloses a multipurpose transfer pump free of secondary water filling, which comprises a cover plate, a water filling plug, a pump body, an impeller, a pump body flange and a motor, the pump body flange is provided at an end portion of the motor, the pump body is provided on a front surface of the pump body flange, a volute chamber corresponding to the impeller is provided in a back surface of the pump body in an inwards recessed manner. In this way, the multipurpose transfer pump free of secondary water filling disclosed by the application can achieve a self-priming effect without filling water into the pump body when the motor works for a second time, thus improving the impeller lubricating effect.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: November 15, 2022
    Assignee: GP Enterprises Co., Ltd.
    Inventor: Xian Wang
  • Patent number: 11498657
    Abstract: A hinged propeller comprising a hub and one or more blades is disclosed. In various embodiments, a blade is connected to the hub via a hinge, wherein at least a substantial part of the blade has a longitudinal axis that is substantially parallel to a line extending radially from a center of the hub, and wherein the hinge has an axis of hinge rotation that is oriented at a non-zero acute angle to a line that is perpendicular, in a plane of rotation of the hub, to said longitudinal axis.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: November 15, 2022
    Assignee: Kitty Hawk Corporation
    Inventor: Todd Reichert
  • Patent number: 11498172
    Abstract: A high torque dual speed turbine rotor for a lightweight hand held tool for grinding and polishing or for use with a spindle mounted pneumatic machine. The high torque dual speed turbine rotor includes a two-piece shaft with flow control screw disposed within the shaft. The shaft includes a first set of hollow openings, at a first position from one end of the shaft, in fluid communications with a first annular chamber of a rotor. There is also a second set of hollow opening, at a second position from the one end of the shaft, in fluid communications with a second annular chamber of the rotor. The flow control screw moves inside a threaded axial bore of the shaft from an open position inside the axial bore to the closed position corresponding to the second set of hollow openings.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: November 15, 2022
    Assignee: Air Turbine Technologies, Inc.
    Inventor: Simon Richard Shane
  • Patent number: 11493027
    Abstract: A wind turbine has a nacelle which houses operative components such as a transformer or converter which in use generate unwanted heat, the nacelle including an external nacelle cover (20) to form the outer nacelle enclosure, and provided with a panel (24) which overlies a bottom cover (22) region forming therewith a conduit for directing external air to one or more of the heat generating operative components for cooling purposes.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 8, 2022
    Assignee: Vestas Wind Systems A/S
    Inventors: Martin Patrick Vcelka, Matthieu Alexandre
  • Patent number: 11493022
    Abstract: Carts with aerofoils move around an elongated, looped track under the force of the wind. Carts are connected to each other in a train on the windward side of the track and collectively rotate gear wheels at the side of the track, via racks mounted on the carts that engage with the gears. The gears ultimately power an electrical generator mounted in the base of the system. The system has multiple tracks stacked one above the other and mounted on a rotatable structure that can be turned to optimize wind energy harvesting. The angle of the aerofoils is adjusted at different locations of the cart on the track when desired. Intervening buffer carts without aerofoils are used to space the carts with aerofoils. The speed of the carts is a fraction of the wind speed.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: November 8, 2022
    Inventor: Guang Rong Liu
  • Patent number: 11493055
    Abstract: Radial pump (1) comprising a stator (3) comprising an external stator (30) and an internal stator (32) defining an annular cavity (11) therebetween, and an impeller (5) rotatably housed between said stators (30; 32). The suction (7) is fashioned at a central portion of the internal stator (32), whereas the delivery (9) is fashioned at a radially external peripheral portion of the external stator (30). The impeller (5) comprises a plurality of deformable vanes (50, 51, 52) movable inside the annular cavity (11) and in slidable contact with the internal surface of the external stator (30). In every position of the impeller (5) with respect to the stator (3) at least two deformable vanes (51) are sealed in the portion of the annular cavity (11) between the suction (7) and the delivery (9) to isolate the delivery (9) from the suction (7).
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: November 8, 2022
    Inventor: Mario Antonio Morselli
  • Patent number: 11493053
    Abstract: A pump for conveying a fluid includes a stationary housing, an impeller conveying the fluid from a low pressure region to a high pressure region, a shaft to rotate the impeller about an axial direction, and a separation device to restrict a flow of the fluid from the high pressure region to the low pressure region. The separation device includes a rotary part connected to the shaft, and a stationary part stationary with respect to the housing. The rotary and stationary parts face each other and delimit a gap between the stationary part and the rotary part. The gap is arranged between the high and low pressure regions. A recess is disposed in the stationary part or the rotary part, the recess including a bottom, and a non-metallic insert is disposed in the recess. A relief channel enables fluid communication between the bottom and the low pressure region.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: November 8, 2022
    Inventors: Christopher David Radcliffe, Torsten Johne, Heike Tischler, Flavio Giardino, Thomas Welschinger
  • Patent number: 11480187
    Abstract: An oil field pump is installed within a pipe that connects to an oil field, and feeds accumulated extraction oil in a predetermined direction. The oil field pump includes a rotor with an impeller, a stator installed on the outer circumferential of the rotor and that forms a flow path for passing the extraction oil between the stator and the rotor and that includes a diffuser on the downstream side of the impeller, a static pressure bearing device installed between the rotor and the stator and that supports the load in the radial direction, and a supply flow path that supplies, to the static pressure bearing device, a portion of the extraction oil flowing along the inner side in the radial direction of the path.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: October 25, 2022
    Inventors: Rimpei Kawashita, Shimpei Yokoyama
  • Patent number: 11466701
    Abstract: To provide a vacuum pump suited for removal of a product deposited in a flow path of the vacuum pump, and a stator component, a discharge port, and control means that are used in the vacuum pump. A vacuum pump includes a flow path through which a gas is transferred from an inlet port toward an outlet port and removing means that removes a product deposited on an inner wall surface of the flow path. The removing means has injection holes with one ends opened at the inner wall surface of the flow path and injects the removing gas into the flow path through the injection holes.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: October 11, 2022
    Assignee: Edwards Japan Limited
    Inventors: Kazushi Yamamoto, Manabu Nonaka, Yoshiyuki Sakaguchi, Takashi Kabasawa
  • Patent number: 11460031
    Abstract: A centrifugal pump assembly includes an electrical drive motor (2), with at least one impeller (18) which is driven by the motor and a pump casing (6) which surrounds the impeller (18) and which includes at least one suction connection (20) and at least two delivery connections (22, 24). A rotatable valve element (30, 30?, 30?) is arranged in the pump casing (6). The valve element is movable between at least two switching positions, in which the flow paths through the delivery connections (22, 24) are opened to a different extent. The valve element (30, 30?, 30?) includes an annular wall (32) which surrounds the impeller (18) and in which at least one switching opening (48) is formed. The valve element (30, 30?, 30?) is rotatably mounted about a rotation axis (X), which is centric to the annular wall (32), inside of the pump casing (6).
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: October 4, 2022
    Inventors: Thomas Blad, Christian Blad, Peter Mønster
  • Patent number: 11441544
    Abstract: A method for operating at least two floating offshore wind turbines (1) is disclosed. The wind turbines (1) are operated at respective first operating positions (7), and a previous and/or a future expected wear impact on each wind turbine (1) is estimated. At least one wind turbine (1) to be relocated to a respective second operating position (9) is identified, based on the estimated wear impact. The identified wind turbines (1) are moved to respective second operating position (9) and operated there.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 13, 2022
    Assignee: Vestas Wind Systems A/S
    Inventor: Jesper Rømer Hansen
  • Patent number: 11441571
    Abstract: A sealing system includes: a double mechanical seal having a pump-side sealing mechanism (10, 12) and an atmospheric-side sealing mechanism (11, 13); a pump mechanism (19) driven by a rotational shaft (1); a first medium circulation line (30) for circulating a fluid barrier-and-cooling medium between a first chamber (22a) and a second chamber (22b), the first medium circulation line (30) being coupled to the first chamber (22a) and the second chamber (22b), the fluid barrier-and-cooling medium being different from a fluid handled by the centrifugal pump; a heat exchanger (21) and a shut-off valve (28) attached to the first medium circulation line (30); a second medium circulation line (31) bypassing the shut-off valve (28); and a medium pressurizing pump (45) and an on-off valve (23) attached to the second medium circulation line (31).
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: September 13, 2022
    Inventors: Shigeru Yoshikawa, Junichi Hayakawa
  • Patent number: 11445634
    Abstract: A pushing action and a suction action are simultaneously performed on a working fluid passing through a heat transfer base, such that a heat exchange of cooling water can be efficiently performed, according to one embodiment of the present invention.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 13, 2022
    Assignee: ZALMAN TECH CO., LTD.
    Inventor: Kukyoung Yoon
  • Patent number: 11434919
    Abstract: A water pump includes a support portion provided with a bearing hole, and a pulley which is provided at one end of a rotation shaft and which is formed in a cylindrical shape with a bottom. The support portion includes an annular small-diameter portion provided with the bearing hole at the center, and an annular large-diameter portion. At least a part of the small-diameter portion is located at the pulley side relative to the large-diameter portion. An annular first clearance is formed between the cylindrical portion of the pulley and the large-diameter portion. A second cylindrical portion is provided on the bottom portion of the pulley. An annular second clearance is formed between the second cylindrical portion and the small-diameter portion.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: September 6, 2022
    Inventors: Takashi Yamazaki, Ichiro Takayama, Tomokazu Sato
  • Patent number: 11421650
    Abstract: The present disclosure is directed to towerless vertical-axis wind turbines with pre-tensioned rotors. The present disclosure is further directed to a vertical-axis wind turbine (VAWT) with supported blade ends (e.g., Darrieus type) which replaces the center tower with tensioned supports, such as tensioned guy wires, and blade pre-load.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: August 23, 2022
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Brandon L. Ennis, Joshua Paquette
  • Patent number: 11415102
    Abstract: The invention relates to the field of energy, in particular to devices converting wind energy into electricity. The wind energy conversion method into electrical energy consisting in that the wind energy is converted by means of receivers mounted on the casing of moving wind energy conversion modules, moving linearly along the guide belt, into movement energy of wind energy conversion modules and electric energy by means of electrical energy generating device, mounted on the casing. Wherein there is performing continuous control, depending on the external conditions of the total area of all wind energy receivers guided to the guide belt.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: August 16, 2022
    Inventor: Vyacheslav Antonovich Yakimchuk
  • Patent number: 11408433
    Abstract: In centrifugal pumps and, in particular, pumps for transferring fluids containing abrasive particles such as slurry pumps, wear of wetted areas is a major maintenance issue. The invention provides for the protection of internal surfaces vulnerable to wear from such particles by providing means for adjusting and controlling distribution of gland fluid for flushing vulnerable areas. The invention extends to a method and a retrofit kit, but provides primarily for a centrifugal pump assembly comprising an impeller rotatably mounted therein and support means operatively arranged for supporting the impeller from its suction side in sealing relationship with the housing. The sealing means may be mechanically adjustable for substantially even distribution of gland fluid to both axial sides of the impeller in the pump housing.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 9, 2022
    Inventor: Boyce Barrow
  • Patent number: 11401892
    Abstract: A turbine pump system includes a turbine pump assembly including a housing, a pump located in the housing, a turbine located in the housing and operably connected to the pump, and a heat exchanger located between the pump and a hydraulic fluid load. The heat exchanger is configured to reduce a temperature of a hydraulic fluid flow output by the pump and directed to the hydraulic fluid load. The heat exchanger is operably connected to a turbine gas flow and utilizes the turbine gas flow to cool the hydraulic fluid flow at the heat exchanger.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: August 2, 2022
    Inventors: Richard A. Himmelmann, William T. Conroy
  • Patent number: 11396882
    Abstract: The gas seal column pump may comprise a pump drive, a gas seal column, a seal gas control box, and a pump. A drive motor of the pump drive, the gas seal column, and the pump may comprise a hermetically sealed, vertically-oriented, pumping system where the gas seal column is operable to replace mechanical seals around a drive shaft that couples the drive motor to the pump. A pressurized seal gas pumped into the drive motor and the gas seal column may displace corrosive fumes and the product being pumped. A product level may be sensed using a plurality of level sensors. Responsive to inputs from the level sensors, a seal gas control box may regulate the pressure of the seal gas using a plurality of valves. A bearing shaft adapter may be added to provide a special drive shaft of other lengths, diameters, or materials.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 26, 2022
    Inventor: William Louis Kacin