Patents Examined by Theresa Trieu
  • Patent number: 11454240
    Abstract: A pump body assembly and a compressor are provided. The pump body includes: a spindle, wherein the spindle has a sliding vane chute, a back pressure oil cavity being at least a part of an oil passage is located at a tail end of the sliding vane chute, an oil outlet of the back pressure oil cavity is located at the top of the back pressure oil cavity, and a position of the oil inlet of the back pressure oil cavity is lower than that of an oil outlet of the back pressure oil cavity such that a lubrication medium enters the back pressure oil cavity through the oil inlet of the back pressure oil cavity and fills up the back pressure oil cavity and flows out from the top of the back pressure oil cavity.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 27, 2022
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Yusheng Hu, Huijun Wei, Jia Xu, Fayou Luo, Pengkai Wan, Fei Wu, Rongting Zhang, Zhiming Wen
  • Patent number: 11448071
    Abstract: A vane motor with a rotor body driven by compressed air having vane gaps for radially movable vanes and a rotor shaft for rotatably bearing the rotor body relative to a motor bushing. A method for lubricating a vane motor that ensures particularly long, low-service operation is provided. The rotor shaft is configured as a hollow shaft with a first lubricant reservoir in the interior. The first lubricant reservoir has a lubricant filling opening accessible from the outside of the vane motor. The first lubricant reservoir is connected by at least one radial lubricant hole to at least one further lubricant reservoir arranged in a section of the rotor body between two vane gaps, and/or is connected to an outlet opening arranged in one of the vane gaps for supplying lubricant into the vane gap.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: September 20, 2022
    Assignee: J.D. Neuhaus Holding GmbH & Co. KG
    Inventors: Ewald Sawitzki, Simon Brose
  • Patent number: 11448215
    Abstract: A hermetic compressor is provided that may include a vane that is inserted into a roller, rotates with the roller, and is pushed out toward an inner circumference of a cylinder by rotation of the roller to divide the compression chamber into a plurality of spaces. The vane may include a body having a sealing surface that contacts the inner circumference of the cylinder and inserted into the roller; and a guide that extends from an axial end of the body in a direction crossing a direction the vane slides out, and that is slidably inserted into a guide groove formed on at least one of the first bearing or the second bearing to restrain the vane from sliding out of the roller toward the inner circumference of the cylinder.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: September 20, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Seokhwan Moon, Seoungmin Kang, Byeongchul Lee
  • Patent number: 11448211
    Abstract: An oil pump includes: a first core in which an inner rotor having external teeth and an outer rotor having internal teeth are housed; a housing having a recess in which the first core is held; a second core disposed in contact with the first core in an axial direction; and a cover having a holding hole in which the second core is held. The first core has a first recess/projection portion formed on a first axial end surface at a side opposite to an axial end surface opposing a bottom wall of the recess. The second core has a second recess/projection portion formed on a second axial end surface that is in contact with the first axial end surface. A gap is formed between opposing surfaces of the housing and the cover in a state where the first and second axial end surfaces are in contact with each other.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 20, 2022
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Shinya Sakai, Seongjun Park, Takeshi Hattori
  • Patent number: 11448212
    Abstract: A geared volumetric machine including: a first and a second door; the second door operating at a greater pressure than the first door; one from between the first and second door being an inlet door of a fluid into the volumetric machine and the other door being an outlet door; a first cogged wheel in turn including a first and a second lateral flank; a second cogged wheel enmeshing with the first cogged wheel; a first and a second abutment between which the first cogged wheel is interposed and that respectively face the first and the second lateral flank of the first cogged wheel; a first grooved pathway which at least in a first angular position of the first cogged wheel connects a first and a second zone, the first zone including at least one of the compartments which is in communication with the second door.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 20, 2022
    Assignee: CASAPPA S.P.A.
    Inventor: Manuel Rigosi
  • Patent number: 11441566
    Abstract: A rotary compressor may include a rotary shaft; a plurality of plates that supports the rotary shaft; a cylinder provided between the plurality of plates to define a compression space, and provided with a vane slot; a roller slidably coupled to the rotary shaft inside of the cylinder, and having a hinge groove on an outer circumferential surface thereof; and a vane, a first end of which is slidably coupled to the vane slot of the cylinder, and a second end of which is rotatably coupled to the hinge groove of the roller. At least one of first and second axial end surfaces of the roller facing the plurality of plates is provided with a dimple portion having a predetermined depth. With this structure, contact surfaces between the roller and the plate may be prevented from being in close contact with each other.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: September 13, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Jingyu Lee, Sangmin Na, Wonbae Park
  • Patent number: 11441561
    Abstract: A vane pump has a pump flange, a cam ring, a pressure plate and at least one pin extending axially through the pump flange, the cam ring and the pressure plate, the pin being preloaded in an axial direction thereof by means of at least one spring element.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: September 13, 2022
    Assignee: HANON SYSTEMS EFP DEUTSCHLAND GMBH
    Inventors: Dirk Borchers, Thomas Dippel, Rolf Popelka
  • Patent number: 11434906
    Abstract: A vane cell pump, including: a delivery chamber having an inlet and an outlet; a rotor which is arranged in the delivery chamber and has a rotor body and vanes which are accommodated by the rotor body such that they can be shifted radially; an end-facing wall which delineates the delivery chamber on an axial end-facing side; and a supporting element which is arranged axially between the end-facing wall and the rotor body and which supports the vanes at their radially inner vane ends, wherein the rotor body, the supporting element and each two vanes which are adjacent in the circumferential direction of the rotor form chambers, the volume of which varies when the rotor is rotating. A pressure equalization connection fluidically connects at least two of the chambers to each other.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: September 6, 2022
    Assignee: Schwäbische Hüttenwerke Automotive GmbH
    Inventor: Tobias Iser
  • Patent number: 11434908
    Abstract: A compressor is provided which is configured to allow lubrication of a thrust surface through an oil groove formed in a thrust surface of a fixed scroll. Also, a scroll compressor is provided which smoothly supplies oil to a thrust surface of a fixed scroll by including a fixed scroll having an oil groove formed in the thrust surface of a fixed scroll sidewall, and allows an injection pressure acting on an orbiting scroll in an upward direction to be added by supplying the oil guided to the oil groove to the thrust surface of the fixed scroll such that an overturn moment generated in the orbiting scroll may be offset.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 6, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang Baek Park, Jungsun Choi, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 11434905
    Abstract: One example of a gerotor pump includes an inner rotor comprising multiple teeth, the inner rotor configured to rotate about a first longitudinal gerotor pump axis. The gerotor pump also includes a hollow outer rotor including an outer surface and an inner surface having substantially identical contours, the inner surface configured to engage with the multiple teeth and to rotate about a second longitudinal gerotor pump axis. The pump includes a pump housing within which the inner rotor and the outer rotor are disposed, wherein the outer surface of the outer rotor defines gaps between the pump housing and the outer rotor.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 6, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Rafael Adolfo Lastra Melo, Jinjiang Xiao
  • Patent number: 11428222
    Abstract: A vane pump includes: a casing forming a pump chamber therein; a rotor arranged inside the casing to rotate eccentrically with respect to the casing; and a plurality of vanes configured to rotate with the rotor and slide on an inner side surface of the casing. At least one of Formula (1): l?(b/a)×k and Formula (2): l?(c/a)×j is satisfied, where “a” represents a height of the pump chamber, “b” represents a height of the rotor, “c” represents a height of the vane in a rotation axis direction of the rotor, and where “l” represents a linear expansion coefficient of the casing in the rotation axis direction, “k” represents a linear expansion coefficient of the rotor in the rotation axis direction, and “j” represents a linear expansion coefficient of the vane in the rotation axis direction.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 30, 2022
    Assignee: DENSO CORPORATION
    Inventors: Keiichirou Ishihara, Tomohiro Itoh, Yasuo Katoh
  • Patent number: 11428228
    Abstract: A screw compressor includes a screw rotor, a casing, and a delivery side shaft sealing unit. The delivery side shaft sealing unit includes an annular groove, a seal ring, and a shaft sealing fluid supply passage. Pressure of the fluid that is supplied to the one side, in the axial direction, of the seal ring via the shaft sealing fluid supply passage is set higher than pressure that acts on a first side surface, in an axial direction with respect to a first side wall surface of the annular groove, of the seal ring.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 30, 2022
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kotaro Chiba, Masahiko Takano, Kenji Morita, Yoshitaka Takeuchi, Takeshi Tsuchiya
  • Patent number: 11415128
    Abstract: A variable displacement pump device includes a pump, a mover, a biasing member, first and second control chambers, and a controller. The first and second control chambers are provided between an inner periphery of a containing chamber of a housing and an outer periphery of the mover. Hydraulic oil is introduced from a discharge port into the first control chamber. The pump is configured to permit oil to be introduced from the discharge port into the second control chamber via a supply/discharge passage or to be discharged from inside the second control chamber. The second control chamber is located adjacent to any of the pump chambers in a discharge region or the discharge port via the mover. The controller is configured to switch states in which the second control chamber is opened and closed to the supply/discharge passage.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: August 16, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Koji Saga, Hideaki Ohnishi
  • Patent number: 11408286
    Abstract: An apparatus including a first piston member rotatable about a first rotational axis and a rotor with a first chamber and pivotable about a second rotational axis. The first piston member extends across the first chamber. The rotor and first piston member are rotatable around the first rotational axis, and the rotor is pivotable about the second rotational axis to permit a relative pivoting motion between the rotor and the first piston member linked to the rotor rotating about the first rotational axis.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: August 9, 2022
    Assignee: FETU LIMITED
    Inventor: Jonathan Paul Fenton
  • Patent number: 11408425
    Abstract: In a vertical cylindrical hermetically sealed container, a rotary compressor includes a motor unit and a compression unit below the motor unit. The compression unit includes a shaft having an eccentric portion, a piston shaped to fit into the eccentric portion, a flat plate-shaped vane pressed against an outer circumferential surface of the piston, and a cylinder that accommodates the piston and the vane and forms a suction chamber and a compression chamber. The rotary compressor stores, in the hermetically sealed container, lubricating oil of which amount causes immersion of a part of the compression unit. The rotary compressor has a hollow portion on a lower end side of the shaft, and has an oil supply diagonal hole that is inclined with respect to a rotation axis of the shaft and causes the hollow portion and an upper end of the eccentric portion to communicate with each other.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: August 9, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shuhei Hoshino, Naoya Morozumi
  • Patent number: 11401934
    Abstract: An object of the present invention is to provide a rotary displacement compressor capable of determining whether a check valve has failed, and preventing the life of a compressor body from being reduced when a compression operation stops. In order to achieve the object, a rotary displacement compressor includes a compressor body that compresses a medium by reducing a volume of the medium using rotation; a discharge pipe through which a compressed medium, which is discharged through a discharge port of the compressor body, flows; a check valve that shuts off the compressed medium flowing backward to the compressor body; and a backflow control valve that allows a predetermined rate of the compressed medium to flow backward. The check valve and the backflow control valve are disposed in series via the discharge pipe.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: August 2, 2022
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Yoshiyuki Kanemoto, Hiroaki Saito, Akihiro Yamamoto
  • Patent number: 11396877
    Abstract: To be as lightweight and compact, for example for automotive technology, a scroll compressor further includes an axial guide that supports the movable compressor body to prevent movements in the direction parallel to a centre axis of the stationary compressor body and, in the event of movements, guides it in the direction transverse to the centre axis. A coupling prevents the movable compressor body from rotating freely. The axial guide supports a compressor body base, which carries the scroll vane, of the second compressor body against an axial support face, in that the axial support face abuts a sliding body such that it is slidable transversely to the centre axis. The sliding body is slidable transversely to the centre axis, on a carrier element that is arranged in the compressor housing.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: July 26, 2022
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Dimitri Gossen, Muzaffer Ceylan
  • Patent number: 11384761
    Abstract: A variable capacity compressor is provided, including: two cylinders and a middle plate; at least one flow channel provided in the middle plate, wherein one end of the flow channel is connected to an exhaust chamber of any one of the two cylinders, the other end is connected to a suction chamber of the other one of the two cylinders. In present disclosure, by setting a flow channel in the middle plate of the variable capacity compressor, the exhaust chamber of one cylinder is connected to the suction chamber of the other cylinder. When the flow channel is completely closed, the two cylinders operate independently; when the flow channel is opened, the refrigerant in the exhaust chamber flows into the suction chamber through the flow channel, that is, the upper cylinders and the lower cylinder are connected to each other, which can adjust the capacity of the compressor.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: July 12, 2022
    Assignee: SHANGHAI HIGHLY ELECTRICAL APPLIANCES CO., LTD.
    Inventors: Yanzhen Wang, Jin Pan, Chunhui Liu
  • Patent number: 11378076
    Abstract: A gear pump is capable of maintaining the pump volumetric efficiency for preferably supplying a hydraulic liquid while adequately securing a sealing area, even if a cross sectional area of a flow-in passage is increased. The cross section of a suction passage has a rectangular shape in a side close to a hollow space in a body, and has a circular shape in the outside of the body. The rectangular shape of the suction passage in the hollow space side in the body has a long side extending in a direction along the tooth width of the spur gears, and a short side extending along a direction perpendicular to the tooth width direction. The suction passage has a shape that smoothly connects the rectangular shape in the hollow space side in the body with the circular shape in the outside of the body.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: July 5, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Kenichi Kanatani, Takahiro Kono
  • Patent number: 11371503
    Abstract: A drilling motor system for drilling a subterranean well includes a stator tube, the stator tube being an elongated tubular member with a central stator bore. A stator elastomer layer is located within the central stator bore, lining a wall of the central stator bore. The stator elastomer layer has an elastomer bore that includes a plurality of stator lobes extending in a helical pattern along an axial length of the central bore. A rotor is located within the elastomer bore, the rotor being an elongated member that includes a plurality of rotor lobes extending in a helical pattern along an axial length of the rotor. The stator elastomer layer includes a failure detection system, the failure detection system operable to identify a region of damaged stator elastomer layer.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 28, 2022
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventor: Victor Carlos Costa De Oliveira