Patents Examined by Essama Omgba
  • Patent number: 12018669
    Abstract: Multiple diaphragm pumps are known in the art that are operated by compressed air and in which the valves are controlled by a slide element. The slide element is magnetically actuated without mechanical engagement involved in the actuation. This has the consequence that only a small amount of force can be applied which may not be sufficient due to static friction of the valve seal. The invention presents a hybrid solution which facilitates a mechanical actuation of a valve piston provided for valve control as well as a magnetic overcoming of a dead center that may be reached by the valve piston and the diaphragm piston that actuates the diaphragms of the multiple diaphragm pump.
    Type: Grant
    Filed: February 12, 2022
    Date of Patent: June 25, 2024
    Assignee: Lutz Pumpen GmbH
    Inventors: Takumi Nasu, Alexander Ries, Andrej Getze
  • Patent number: 12006939
    Abstract: A system for detecting dry running of a pump includes an inlet device to an intake device of the pump for taking in an electrically conductive liquid, and an electrical resistance structure (20) arranged in the inlet device. The electrical resistance structure has a variable resistance value, dependent on wetting with the electrically conductive liquid.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: June 11, 2024
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Gerhard Eser, Eugen Bernarding
  • Patent number: 11994003
    Abstract: A fallback prevention valve apparatus, system and method is described. An electric submersible pump (ESP) fallback prevention system includes an ESP assembly positioned in a downhole well, the ESP assembly including production tubing extending between a centrifugal pump and a surface of the downhole well such that during operation of the ESP assembly production fluid flows upward from the centrifugal pump through the production tubing to the surface, the production tubing including a fallback valve actuatable by the flow of production fluid, the fallback valve actuatable between an open position, wherein production fluid flowing upward through the fallback valve actuates the fallback valve into the open position, and a closed position, wherein production fluid flowing downward through the fallback valve actuates the fallback valve into the closed position, the closed position blocking sand carried by the production fluid from falling into the centrifugal pump.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: May 28, 2024
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Wesley John Nowitzki, Walter Russell Dinkins
  • Patent number: 11982266
    Abstract: A compressor includes: a case, a compression unit that is provided inside the case and that includes a cylinder and a piston configured to reciprocate inside the cylinder to compress refrigerant, a driving unit that includes a stator disposed inside the case and a plurality of permanent magnets configured to reciprocate with respect to the stator and that is configured to provide a driving force to the compression unit, and a resonator that is configured to reduce noises generated while the compression unit is operated, that is disposed between the compression unit and an inner surface of the case facing the compression unit in an axial direction, and that is spaced apart from the compression unit.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: May 14, 2024
    Assignee: LG Electronics Inc.
    Inventors: Jongchan Lee, Sunghyun Ki, Hyeongjun Lim
  • Patent number: 11976663
    Abstract: A vacuum pump includes: a casing formed with an inlet port or outlet port; a stator disposed inside the casing; and a rotor enclosed in the casing and including a shaft rotatably supported on the stator, and a rotor blade formed in a cylindrical shape with a plurality of blades arranged in multiple stages on an outer circumferential portion thereof, and secured to the shaft such as to be integrally rotatable therewith. The rotor blade is provided with a rupture location control groove as a rupture location control means that locally reduces rigidity of the rotor blade to control a location where the rotor blade ruptures.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: May 7, 2024
    Assignee: Edwards Japan Limited
    Inventor: Shunsuke Takeda
  • Patent number: 11973381
    Abstract: A fluid machine includes an electric motor, a pump, an inverter, and a housing having a motor chamber and an inverter chamber. The housing has a cooling passage having an inverter cooling passage and a motor cooling passage through which cooling fluid flows. After the cooling fluid is introduced to the inverter cooling passage, a flow of the cooling fluid is divided at the inlet into a flow of the cooling fluid flowing through the inverter cooling passage and a flow of the cooling fluid flowing through the motor cooling passage, the flow of the cooling fluid flowing through the inverter cooling passage and the flow of the cooling fluid flowing through the motor cooling passage are joined together at the outlet and discharged from the inverter cooling passage. The inverter cooling passage has a passage expanded portion in which a vortex flow is generated.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: April 30, 2024
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Katsutoshi Shiromaru, Tatsushi Mori, Rieko Harada, Shintaro Kashiwa
  • Patent number: 11971032
    Abstract: A vane rotary compressor may include a main bearing and a sub bearing provided with a plurality of back pressure pockets each having a different pressure formed on a surface facing the cylinder, a rotational shaft radially supported by the main bearing and the sub bearing, a roller provided with a back pressure chamber that communicates with the plurality of back pressure pockets and having a plurality of vanes configured to divide a compression space into a plurality of compression chambers. At least one of the main bearing or the sub bearing is provided with an oil supply passage that communicates with a back pressure pocket having a relatively low pressure among the plurality of back pressure pockets. Accordingly, oil may be smoothly supplied to a back pressure pocket having a low pressure.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: April 30, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiyoul Noh, Seokhwan Moon, Joonhong Park
  • Patent number: 11965500
    Abstract: A compressor includes: a cylinder defining a compression space, a piston structure accommodated in the cylinder and including a mount member and a guide member, the guide member being configured to reciprocate inside the compression space of the cylinder in an axial direction to compress a refrigerant gas therein and a magnet frame configured to support a mover, the mover being coupled to the piston structure and configured to move together with the piston structure. The mount member connects the guide member to the magnet frame and the guide member is configured to be rotated with respect to the mount member.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: April 23, 2024
    Assignee: LG Electronics Inc.
    Inventors: Sangik Son, Youngpil Kim, Kyungmin Lee, Wooju Jeon
  • Patent number: 11965513
    Abstract: A system and method for operating centrifugal pumps related to net positive suction head (NPSH), including identifying a group of centrifugal pumps and deriving an equation for the group based on manufacturer data of the centrifugal pumps collectively in the group, the equation correlating NPSH required (NPSHr) with flowrate of pumped fluid, wherein the manufacturer data includes NPSHr for each centrifugal pump of the group as a function of the flowrate of the pumped fluid. The technique includes specifying a NPSH margin for NPSH available (NPSHa) above the NPSHr.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: April 23, 2024
    Assignee: Saudi Arabian Oil Company
    Inventors: Khalid Alkad, José Rosario Leal Vargas
  • Patent number: 11965504
    Abstract: A manifold assembly configured for use with a fluid end used in oil and gas operations. The manifold assembly comprises upper and lower manifolds supported on side posts such that the manifolds and posts define a central opening. In operation, the fluid end is positioned within the central opening such that the manifold assembly surrounds the fluid end. The manifold assembly is not attached to the fluid end other than flexible conduits interconnecting the fluid and the manifolds. The manifold assembly is modular and when assembled, may be moved together as a single unit.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: April 23, 2024
    Assignee: Kerr Machine Co.
    Inventors: Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, John Keith, Nicholas Son
  • Patent number: 11959472
    Abstract: A pump device includes a piezoelectric pump, a piezoelectric pump, and a driving circuit. The piezoelectric pump is driven at a first frequency when singly driven. The piezoelectric pump is driven at a second frequency when singly driven. The driving circuit drives the piezoelectric pump and the piezoelectric pump at the same driving frequency.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: April 16, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenjiro Okaguchi
  • Patent number: 11959468
    Abstract: An apparatus for conveying thick matter has a drive cylinder for receiving hydraulic fluid, a drive piston, which is arranged in the drive cylinder, a conveying cylinder for receiving thick matter, a conveying piston, which is arranged in the conveying cylinder, and a piston rod, which is fastened to the drive piston for coupling motion together with the conveying piston. The drive cylinder has a rod-side opening for applying pressure to a rod side of the drive piston by way of hydraulic fluid and a crown-side opening for applying pressure to a crown side of the drive piston facing away from the rod side by the hydraulic fluid. A drive pump is designed to generate a drive volume flow having a drive pressure of hydraulic fluid for moving the drive piston. A pump connection is designed for variable connection of the drive pump to the rod-side opening or the crown-side opening for the flow of hydraulic fluid.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: April 16, 2024
    Assignee: Putzmeister Engineering GmbH
    Inventors: Wolf-Michael Petzold, Jan-Martin Veit, Michael Schaefer, Frederik Kort
  • Patent number: 11959499
    Abstract: An Environmental Control System (ECS) for an aircraft includes a ram air system having a ram inlet and a ram outlet. The ECS includes a cabin air compressor motor, a diverter valve, and a dedicated outlet. The cabin air compressor motor has a motor inlet passage and a motor outlet passage with the motor inlet passage being coupled to the ram inlet. The diverter valve includes a first diverter inlet, a first diverter outlet, and a second diverter outlet. The first diverter inlet is coupled to the motor outlet passage. The dedicated outlet is connected to the first diverter outlet in a flight mode of operation of the aircraft and the ram outlet is connected to the second diverter outlet in a ground mode of operation of the aircraft.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: April 16, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Donald E. Army, Patrick McCord, Dominique P. Sautron, Thomas M. Zywiak
  • Patent number: 11952988
    Abstract: A piston pump includes: a first biasing mechanism configured to bias a swash plate in accordance with control pressure supplied; a second biasing mechanism configured to bias the swash plate against the first biasing mechanism; and a regulator configured to control the control pressure in accordance with self-pressure of the piston pump. The regulator has: an outer spring and an inner spring configured to be extended and compressed by following tilting of the swash plate; a control spool configured to be moved in accordance with biasing forces exerted by the outer spring and the inner spring, the control spool being configured to adjust the control pressure; an auxiliary spring configured to exert biasing force to the control spool against the biasing forces exerted by the outer spring and the inner spring; and an adjusting mechanism configured to adjust the biasing force exerted by the auxiliary spring.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 9, 2024
    Assignee: KYB CORPORATION
    Inventors: Hiroaki Kuboi, Tetsuya Iwanaji
  • Patent number: 11952999
    Abstract: A plunger pump base and a plunger pump device. The plunger pump base includes a support assembly and an extension assembly. The support assembly includes a top plate, a bottom plate and a support frame, the top plate and the bottom plate are oppositely arranged at an interval, and the support frame is respectively fixed with the top plate and the bottom plate. The extension assembly includes an extension block, a first telescopic mechanism and a second telescopic mechanism. One end of the first telescopic mechanism is rotatably connected to the extension block, the other end of the first telescopic mechanism is rotatably connected to the top plate. One end of the second telescopic mechanism is rotatably connected to the extension block, and the other end of the second telescopic mechanism is rotatably connected to the bottom plate.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: April 9, 2024
    Assignee: Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
    Inventors: Peng Zhang, Rikui Zhang, Xiaolei Ji, Chunqiang Lan, Sheng Chang, Liang Lv, Xincheng Li, Lintao Song, Weiqiang Liu
  • Patent number: 11913441
    Abstract: Systems are provided for an air compressor system. In one example, a system includes a housing, a piston arranged in the housing, and a crankshaft arranged in the housing, the crankshaft coupled to a connecting rod of the piston, and the crankshaft forces the piston to oscillate from a first end of the housing to a second end, the piston pressurizing air in the housing to a first pressure at the first end and to a second pressure at the second end, the second pressure greater than the first.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: February 27, 2024
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Andrew Miller, Christopher Lucke, Jeffrey Hritz, Matthew Chatham, Wesley Martincic
  • Patent number: 11905948
    Abstract: In a variable displacement type oil pump, a swing member accommodates a pump forming member, and swings to vary a quantity of change of a volumetric capacity of each pump chamber. A biasing member biases the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber. A first control oil chamber applies a first torque to the swing member in a direction to reduce the quantity of change of the volumetric capacity of each pump chamber. A second control oil chamber applies a second torque to the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber, wherein the second torque is larger than the first torque. A switching mechanism switches between supply and drain of working oil with respect to the second control oil chamber.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 20, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Koji Saga, Yasushi Watanabe, Hideaki Ohnishi, Atsushi Naganuma
  • Patent number: 11905946
    Abstract: A backup ring is for contacting with and supporting a plunger seal which is for sealing a pump chamber provided in a pump head of a plunger type liquid feeding pump. The backup ring includes a maximum outer diameter portion of a cylindrical shape and a smaller outer diameter portion. The maximum outer diameter portion includes a maximum outer diameter in a plunger seal supporting surface side that makes contact with a rear surface of the plunger seal. The smaller outer diameter portion includes a smaller outer diameter than the maximum outer diameter portion in at least one part of a portion other than the maximum outer diameter portion.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: February 20, 2024
    Assignee: Shimadzu Corporation
    Inventors: Toshiki Sano, Shinya Imamura, Masataka Nikko
  • Patent number: 11879472
    Abstract: A control system for an electric motor for a fluid moving apparatus includes a drive circuit and a processor. The drive circuit regulates power supplied to the motor to generate fluid flow. The processor is coupled to the drive circuit and controls the drive circuit to operate the motor at a first speed and torque, and at a second speed and torque, receive a first flow corresponding to the first speed and torque, determine a second flow based on a ratio of the first flow to the first speed, and corresponding to the second speed and torque. The processor is configured to define an algorithm based on the first and second speed, torque, and flow, compute a set point for a demanded flow using the algorithm, and control the drive circuit based on the set point to supply power to the motor and generate the flow.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: January 23, 2024
    Assignee: Regal Beloit America, Inc.
    Inventors: Bin Yang, Brian Lee Beifus, Roger Carlos Becerra
  • Patent number: 11852130
    Abstract: A pump system contains a pair of pumps each of which contains a vibration actuator vibrated by electromagnetic drive and can discharge fluid due to drive of the vibration actuator. The pump system has a vibration suppression mode in which the pair of the pumps are driven so that vibration of the vibration actuators of the pair of pumps is cancelled each other and a vibration generation mode in which the pair of the pumps are driven so that the vibration of the vibration actuators of the pair of pumps is superimposed with each other.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: December 26, 2023
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Yuta Yoshii, Chikara Sekiguchi, Shigenori Inamoto, Yuki Takahashi, Daisuke Kodama, Kenta Ueda, Takahiko Irie, Daisuke Kurita