Patents Examined by Bryan M Lettman
  • Patent number: 10774830
    Abstract: A pump housing includes an integral vent flow path extending between a low-pressure region and the reservoir. The vent path provides fluid communication between the downstream side of a throat seal dividing the low-pressure region from a high-pressure region and the reservoir. Lubricant flows through the vent path from the reservoir to the low-pressure region to provide lubrication to the throat seal.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: September 15, 2020
    Assignee: Graco Minnesota Inc.
    Inventors: Jesse L. Lanie, Dustin A. Tichy
  • Patent number: 10767642
    Abstract: A volumetric pump comprising a product metering chamber, a metering piston mounted inside the chamber so as to slide between top dead center and bottom dead center, a sleeve at least partially delimiting an intake chamber and an exhaust chamber for the product, and a product dispenser that is mounted so as to be able to move with respect to the sleeve and is able to place the metering chamber alternately into communication with the intake chamber and the exhaust chamber is provided. The pump also comprises a pressure sensor that is able to measure the pressure of the product inside the metering chamber, and a control unit that is connected to the pressure sensor and is able to verify the presence of pressure peaks exhibiting a value greater than or equal to a predetermined pressure threshold.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 8, 2020
    Inventors: Aurélien Tournebize, Pierre Annet, Christophe Pierre
  • Patent number: 10767639
    Abstract: A compressor arrangement for operating a compressed air supply facility of a vehicle includes a compressor having an electric motor constructed as an electronically commutated, brushless DC motor with a control circuit comprising a power electronics unit, and a pneumatic compressor. The electric motor is constructed in the form of an external rotor motor.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: September 8, 2020
    Assignee: WABCO GMBH
    Inventors: Frank Meissner, Marco Seeger
  • Patent number: 10753357
    Abstract: A fuel pump includes an intake valve unit which is provided between a low-pressure chamber and a pressurizing chamber. The intake valve unit includes an intake valve configured to move in an axial direction of the intake valve unit and a valve stopper arranged between the intake valve and the pressurizing chamber. A plurality of fuel passages configured to allow fuel to communicate between the low-pressure chamber and the pressurizing chamber are formed on a radially outward of an outer peripheral surface of the valve stopper.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: August 25, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Satoshi Usui, Kenichiro Tokuo, Tatsuo Kawano, Masahiko Hayatani, Shingo Tamura, Hiroyuki Yamada, Katsumi Miyazaki
  • Patent number: 10746176
    Abstract: Control systems and methods for increasing efficiency of a compressor while the compressor capacity exceeds compressor load, by using a mechanical unloader such as a slide valve to reduce the internal volume ratio of the compressor and allow a more efficient speed to be maintained by a variable frequency drive (VFD) while reducing the compressor capacity based on the load. Control systems include the VFD, a controller for the VFD and the mechanical unloader, and temperature sensors. Compressor embodiments further include one or more compressors and mechanical unloaders operated by the control systems.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: August 18, 2020
    Inventors: Jay H. Johnson, Alberto Scala
  • Patent number: 10746203
    Abstract: An integrated housing containing a drive motor which is coupled to a pair of gears which are housed within a pump housing. There are a plurality of inflow-outflow openings which are located on opposite sides of the pump, outside of the centroid of the pump housing. A pump housing is continuous with a hydraulic cylinder. Fluid passage ways run through the integrated housing to control the integrated hydraulic cylinder. Valves within the integrated housing regulate fluid flow.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: August 18, 2020
    Inventor: Mark F. Pelini
  • Patent number: 10746163
    Abstract: A variable capacity compressor includes a compression chamber that compresses a working fluid, an inlet chamber to house the working fluid to be compressed, a discharge chamber to house the working fluid compressed in the compression chamber and discharged therefrom, a control pressure chamber to house a swash plate rotating in accordance with a rotation of the drive shaft, a supply passage to facilitate communication between the discharge chamber and the control pressure chamber, a bleed passage to facilitate communication between the control pressure chamber and the inlet chamber, a first control valve including a first valve portion to adjust an opening degree of the supply passage, a second control valve provided on the bleed passage and including a spool housing recess formed on the bleed passage, and a back pressure chamber between the spool and a bottom of the spool housing recess.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 18, 2020
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Masanori Amemori, Kentaro Suzuki, Takeshi Konishi, Changheon Ohk, Takayuki Endo, Yukio Kazahaya
  • Patent number: 10746170
    Abstract: A preparative separation-purification system has controlling apparatus, which has a pump housing for pumping liquid. The apparatus also has a moving component for reciprocating in the pump housing so as to draw a liquid into the pump housing and discharge the liquid from the pump housing and a driving source for reciprocating the moving component. A setting unit is provided for setting a target liquid supply amount or a target amount which corresponds thereto. A unit amount memory unit is provided for storing a discharge amount of the reciprocating pump per a reciprocal movement of the moving component or a unit amount which is a value corresponding to the discharge amount. A computation unit is provided for computing the smallest multiple number of the unit amount which is equal to or larger than the target amount; and a motor controller for controlling the driving source.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: August 18, 2020
    Assignee: Shimadzu Co.
    Inventor: Tomoyuki Yamazaki
  • Patent number: 10738773
    Abstract: A piezoelectric blower includes a first valve, a first housing, a vibrating plate, a piezoelectric element, a second housing, and a second valve. The first housing forms, together with the vibrating plate, a first blower chamber. A first top plate portion includes a first vent hole that allows an inside of the first blower chamber to communicate with an outside of the first blower chamber. The second housing forms, together with an actuator, a second blower chamber. A second top plate portion includes a second vent hole that allows an inside of the second blower chamber to communicate with an outside of the second blower chamber. The vibrating plate includes an opening portion and a third vent hole, the opening portion allowing an outer periphery of the first blower chamber and an outer periphery of the second blower chamber to communicate with each other.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 11, 2020
    Inventors: Nobuhira Tanaka, Kiyoshi Kurihara
  • Patent number: 10738771
    Abstract: An electric pump includes a cylinder, a piston, a motor, and a discharge valve. The cylinder includes a valve port and a discharge port, which is in communication with the valve port. The discharge valve opens and closes the valve port. When the piston is moved forth to narrow a void in the cylinder, air is compressed in the cylinder. The discharge valve opens when operated by the piston that moves forth. The discharge valve opens and discharges compressed air from the valve port so that fluid including air is discharged from the discharge port.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 11, 2020
    Assignee: Denso Corporation
    Inventors: Tomoyuki Kikuta, Keita Kawai
  • Patent number: 10731647
    Abstract: A high pressure compressor according to the present disclosure and a refrigerating cycle device to which the high pressure compressor is applied may include a casing having a sealed inner space; drive motor provided in the inner space of the casing; a compression unit provided in the inner space of the casing, and provided with a compression space for compressing refrigerant, and provided with a suction port for guiding refrigerant into the compression space, and provided with a discharge port for guiding refrigerant compressed in the compression space into the inner space of the casing a discharge valve provided in the compression unit to selectively open or close the discharge port according to a difference between a pressure of the inner space of the casing and a pressure of the compression space of the compression unit; a first valve configured to suppress refrigerant discharged from the inner space of the casing from flowing backward into the inner space of the casing; a bypass pipe connected between a d
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: August 4, 2020
    Inventors: Jingyu Lee, Jeonghyeon Park, Yeongcheol Ko
  • Patent number: 10724546
    Abstract: A centrifugal compressor includes a casing, a first impeller, a motor, a cooling medium delivery structure, a shaft, and a first bearing. The casing has a first inlet portion and a first outlet portion. The first impeller is attached to the shaft and disposed between the first inlet portion and the first outlet portion. A first axial gap exists between the first impeller and the casing. The shaft is rotatably supported and axially moveable with respect to the casing by the first bearing. The motor is arranged inside the casing to rotate the shaft. The cooling medium delivery structure is configured to vary a supply of a cooling medium to the casing. An impeller clearance control apparatus for a centrifugal compressor includes a sensor and a controller. The controller controls a supply of a cooling medium to the casing based on a value detected by the sensor.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: July 28, 2020
    Inventors: Jeffrey Allen Morgan, Fumiaki Onodera, Tsuyoshi Ueda
  • Patent number: 10724513
    Abstract: A peristaltic pump includes a rotor and a track assembly. The track assembly is spaced from the rotor to receive n tubes therebetween, where n=2m with m a positive integer ?2. The tubes are manifolded to one another at a discharge port. One of the rotor and the track includes an occlusion surface for each of the n tubes. The occlusion surfaces are located at n different angular positions. The angular offset between the occlusion surfaces offsets pulsation associated with each tube so as to reduce overall pulsation at the discharge port.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 28, 2020
    Assignee: Watson-Marlow Limited
    Inventors: Robert Mead, Steven Brokenshire
  • Patent number: 10724524
    Abstract: The present disclosure provides a compressor system operable for compressing a working fluid such as air. A conditioner is positioned upstream of the compressor to reduce the humidity and in some embodiments may control a temperature of the working fluid entering the compressor. A working fluid aftercooler and a lubricant cooler is positioned downstream of the compressor. A first heat exchange system directs water from a source through the conditioner and then to the aftercooler and oil cooler in parallel. A second heat exchange system directs oil from the compressor to the oil cooler and then to a regenerator prior to reentry into the compressor. A control system with one or more control valves is configured to provide oil to the compressor at a target temperature defined to ensure that the temperature of the discharged compressor is above a pressure dew point temperature.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: July 28, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc
    Inventors: Michael Peters, Kenneth J. Schultz, James Christopher Collins, Nicholas Able, Matthew Stinson, Srinivasa Rao Yenneti
  • Patent number: 10724534
    Abstract: A blood pump includes a housing and a rotor within the housing configured to rotate along an axis. The rotor may include a hub, the hub having regions with blades and regions without blades. The regions without blades may have a constant outer diameter and may extend along at least one fourth the length of the hub. The regions with blades may have an increasing outer diameter. Blades may be disposed on a downstream end region of the hub and extend downstream of the hub. Blades may begin approximately halfway along the axial length of a motor stator located about a hub and extend downstream of the motor stator. Blades may have portions that produce axial fluid flow and radial fluid flow with improved flow characteristics.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: July 28, 2020
    Assignee: TC1 LLC
    Inventors: Yi-Ren Woo, Onur Dur, Steven H. Reichenbach
  • Patent number: 10711775
    Abstract: A compact pump includes a case, a diaphragm assembly disposed in the case at an upper position and includes diaphragm units which form respective pump chambers, and a swing body disposed in the case at a lower position and moves the plural diaphragm units in the top-bottom direction. The diaphragm assembly has intake valve elements for opening and closing respective air introduction holes. An upper cover of the case has an exhaust hole and ring-shaped recesses. The upper cover has tubular inner wall surfaces defining the respective ring-shaped recesses. The diaphragm assembly includes tubular exhaust valve elements which are disposed in the respective ring-shaped recesses so as to contact the plural respective tubular inner wall surfaces and a rib which is disposed at its center in the vicinity of the exhaust hole and connects center-side outer wall surfaces of the tubular exhaust valve elements.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 14, 2020
    Inventor: Tomoyuki Hashimoto
  • Patent number: 10711789
    Abstract: A shaftless motor-compressor is disclosed, comprising a casing and at least one compressor stage arranged in the casing. Each compressor stage comprises a respective impeller arranged for rotation in the casing around a rotation axis. Each impeller is combined with an embedded electric motor housed in the casing and comprised of a motor stator and a motor rotor. The motor stator of each compressor stage circumferentially surrounds the impeller and the motor rotor, integral with the impeller. The motor rotor of each stage is arranged inside the respective motor stator.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: July 14, 2020
    Inventors: Sergio Palomba, Dante Tommaso Rubino
  • Patent number: 10704550
    Abstract: Liquid injected screw compressor with an inlet valve and blow-off valve; a liquid circuit with injector; a controller for the transition from unloaded to loaded, whereby when unloaded the inlet valve is closed and the blow-off valve is open, and when loaded the inlet valve is open and the blow-off valve is closed, and whereby during an aforementioned transition, when the injection pressure is below a minimum threshold, the inlet valve remains closed and is opened with a certain delay and that there are means to gradually increase the injection during this delay and to open the inlet valve when the injection pressure has reached the minimum threshold.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: July 7, 2020
    Inventor: Pieter De Schamphelaere
  • Patent number: 10697449
    Abstract: A fluid control device includes a piezoelectric actuator and a deformable substrate. The piezoelectric actuator includes a piezoelectric element and a vibration plate. The piezoelectric element is attached on a first surface of the vibration plate and is subjected to deformation in response to an applied voltage. The vibration plate is subjected to a curvy vibration in response to the deformation of the piezoelectric element. A bulge is formed on a second surface of the vibration plate. The deformable substrate includes a flexible plate and a communication plate stacked on each other. A synchronously-deformed structure is defined by the flexible plate and the communication plate. The deformable substrate is bent in the direction away from the vibration plate. There is a specified depth maintained between the flexible plate and the bulge of the vibration plate. The flexible plate includes a movable part corresponding to the bulge of vibration plate.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: June 30, 2020
    Inventors: Shih-Chang Chen, Ying-Lun Chang, Hsiang-Dyi Wu, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10697430
    Abstract: A wind turbine arrangement including a first rotatable blade arrangement and a second rotatable blade arrangement. The first blade arrangement forms part of a first wind turbine, and the second blade arrangement forms part of a second wind turbine. The second wind turbine can produce a rotative force to the first wind turbine. At wind speeds below that required to operate the first turbine, the second turbine may be operable and provide power to rotate the first turbine.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: June 30, 2020
    Inventor: Khalil Abu Al-Rubb