Patents Examined by Theresa Trieu
  • Patent number: 10844719
    Abstract: One of a pair of a fixed scroll and an orbiting scroll is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade bottom surface of a spiral wrap, and the other one of the scrolls is the scroll including a step portion provided only at a predetermined position along a spiral direction on a blade tip surface of a spiral wrap. A blade bottom surface of an end plate of the fixed scroll is set as a reference surface for setting a chip gap between both the scrolls. When a wrap height of the spiral wrap of the orbiting scroll is represented by (L) (Lo, Li) and a wrap height of the spiral wrap of the fixed scroll is represented by (lo, li), L (Lo, Li)>1 (lo, li) is satisfied.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: November 24, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Makoto Takeuchi, Genta Yoshikawa, Hajime Sato, Takuma Yamashita, Takayuki Hagita, Takayuki Kuwahara, Katsuhiro Fujita, Kazuhide Watanabe
  • Patent number: 10830234
    Abstract: A pump includes a rotor, a pump housing, and a blocking device. The rotor is rotatable about a rotation axis and comprises a rotor hub and a rotor collar that extends from the rotor hub in a radial direction and encircles the rotor hub in an undulating manner. The pump housing forms a pump duct with the rotor. The pump duct connects a first inlet/outlet space to a second inlet/outlet space. The blocking device is arranged between the first and second inlet/outlet spaces and comprises a blocking element that blocks the pump duct in an axial direction on both sides of the rotor collar. The blocking device has first and second seats for the blocking element. A spacing between the first and second seats in a circumferential direction is greater than the spacing between first and second contacting faces of the blocking element in the circumferential direction.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 10, 2020
    Assignee: Watson Marlow GmbH
    Inventors: Achim Staedele, Eric Mayer
  • Patent number: 10830237
    Abstract: A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 10, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Nara Han, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 10823169
    Abstract: A pump fluid driving apparatus includes a housing having a chamber, with two gears mounted within the chamber. The housing includes a first rounded wall section and a second rounded wall section, the first and second rounded wall sections defining at least a portion of the chamber. The gears have teeth located about their respective peripheries and operatively positioned with the teeth of the first gear and the teeth of the second gear intermeshed. The teeth include slotted teeth and solid teeth arranged with uniform spacing in a repeating pattern about the periphery of each of the gears, with each of the slotted teeth having a vane slot and a radially extending vane extending from the vane slot, and each radially extending vane being movable within the respective vane slot and being configured to contact the respective first or second rounded wall sections.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: November 3, 2020
    Assignee: Roper Pump Company
    Inventors: William D. Flavelle, Michael Andrew Ingram
  • Patent number: 10816000
    Abstract: A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 27, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Cheol Hwan Kim, Kangwook Lee, Byeongchul Lee, Yong Kyu Choi
  • Patent number: 10815994
    Abstract: A mutual rotating scroll compressor includes: a first frame fixed to a casing; a second frame provided with an interval between the first frame and the second frame, a compression space being provided between the first frame and the second frame; a first scroll rotatably supported by the first frame and coupled to a driving motor to rotate in the compression space; a second scroll engaged with the first scroll to rotate about the second frame, the second scroll and the first scroll forming a compression chamber in the compression space; and a bearing housing including a housing part, including a boss accommodation part to which the second scroll is rotatably coupled, and a hinge lug which extends from the housing part and is movably coupled to the second frame.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 27, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaesang Lee, Jinho Kim, Sanghun Seong
  • Patent number: 10801498
    Abstract: A compressor is provided and may include a shell, a hub, an insert, and at least one collar. The hub may be disposed within the shell and define an axis of rotation. The hub may include an axially extending aperture. The insert may be disposed within the aperture. The at least one collar may be disposed about the hub.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: October 13, 2020
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Pankaj Nimbaji Ahire, Pavankumar Jorwekar, Ramprasad Ramaswamy, Vinayak Madanrao Juge
  • Patent number: 10794382
    Abstract: A screw compressor includes a compressor housing which has a screw rotor chamber arranged therein. Two screw rotors are arranged in the screw rotor chamber. At least one control slider is arranged in a slider channel of the compressor housing and is adjacent to both screw rotors by means of slider compression wall surfaces. The control slider is moveable in a direction of displacement parallel to the screw rotor axes. There is a position determining device for the at least one control slider. The position determining device has a position indicator that is coupled to the at least one control slider. The position indicator cooperates with a detector that extends parallel to the direction of displacement of the at least one control slider and along which the position indicator is moveable. The detector element is coupled to an evaluation device that determines the positions of the position indicator along the detector.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 6, 2020
    Assignee: Bitzer Kuehlmaschinebau GmbH
    Inventors: Roni Loerch, Klaus Feller, Tihomir Mikulic
  • Patent number: 10774647
    Abstract: A method of casting a rotor using a cavity and core mold allows a longitudinal slot oriented transversely to the axis of rotation to be finish ground to high precision and tight tolerances by casting the slot to have a wider section which extends from the axis to a radius greater than the radii of the hubs of the rotor, and a narrower section which extends from the wider section to the outer surface of the rotor. The geometrical relation of the slot sections to the hubs as cast permits the grinding step to be performed without forming a leak path in either of the hubs.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: September 15, 2020
    Assignee: Torad Engineering LLC
    Inventors: Gregory T. Kemp, John Montgomery, Joseph Orosz
  • Patent number: 10767649
    Abstract: A hermetic compressor may include a cylinder having an elliptical inner circumferential surface; a roller eccentric from the inner circumferential surface; and at least one vane withdrawn towards the inner circumferential surface when the roller is rotated to divide a compression chamber. On the basis of a contact point where the inner circumferential surface and an outer circumferential surface are closest, a first center line passes through a center of the cylinder, an ellipse positioned at a first side of the first center line and forming the inner circumferential surface is a first ellipse, a center point of the first ellipse is a first center point, an ellipse positioned at a second side of the first center line and forming the inner circumferential surface is a second ellipse, a center point of the second ellipse is a second center point, and the first center point and the second center point are spaced apart from the center.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: September 8, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Seokhwan Moon, Seoungmin Kang, Byeongchul Lee
  • Patent number: 10767646
    Abstract: A pump housing for an eccentric screw pump, with a longitudinal axis and a hollow space constituted running axially between a drive-side opening and a pump-side opening, wherein the pump-side opening is enclosed by a main housing body and a lid fastened removably thereto, wherein the main housing body includes a ring segment-shaped axial guiding surface lying opposite the lid.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: September 8, 2020
    Assignee: NETZSCH Pumpen & Systeme GmbH
    Inventors: Mikael Tekneyan, Philipp Nübl, Magdalena Brüning
  • Patent number: 10767648
    Abstract: A vane pump has a housing defining a closed conduit fluidly coupling a discharge port and a planar surface, and an inner rotor eccentrically supported within a cam. The rotor has an outer perimeter defined by wall sections separated by axial slots. The rotor defines another closed conduit extending from one of the wall sections to a rotor end face that is configured to overlap with the closed conduit.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: September 8, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Abdelkrim Zouani, Vidya Marri, Michael Stanley
  • Patent number: 10760574
    Abstract: A compressor element of a screw compressor inlet side and an outlet side and two helical rotors, respectively a male rotor with a drive for the male rotor and a female rotor that is driven by the male rotor by means of synchronisation gearwheels with at least one synchronisation gearwheel on the male rotor, wherein the drive and synchronisation gearwheels of the male rotor are chosen such that, upon being driven with acceleration of the rotors without gas forces, the resulting mechanical drive force that is exerted by this drive and by this synchronisation gearwheel on the male rotor has an axial component that is directed from the outlet side to the inlet side and that the movement of the male rotor in the axial direction from the outlet side to the inlet side is fixed by means of a single axial single-acting or double-acting bearing.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: September 1, 2020
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Simon Peter G. De Bock, Johan Nachtergaele, Dieter Manille L. Bertels
  • Patent number: 10724525
    Abstract: A compressor includes a compression mechanism having a ring-shaped first cylinder, a first piston eccentrically rotatable in an interior of the first cylinder, a first cylinder head member disposed adjacent to one axial end of the first cylinder, a second cylinder head member disposed adjacent to an other axial end of the first cylinder, and a fastening bolt. The fastening bolt fastens the first cylinder head member, the first cylinder, and the second cylinder head member together. An end face of the first cylinder head member contacts the first cylinder, and the end face is provided with a protecting groove. The protecting groove is formed closer to a center of the first cylinder than the fastening bolt, and has a groove width smaller than a groove depth of the protecting groove.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: July 28, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Yukihiro Inada, Kazuhiro Furusho, Eiji Kumakura
  • Patent number: 10724521
    Abstract: A scroll compressor is provided that may include a casing; a drive motor provided at an inner space of the casing; a rotational shaft coupled to a rotor of the drive motor, and rotated together with the rotor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; and an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the fixed wrap. In a state in which a center of the fixed scroll and a center of the orbiting scroll are substantially the same, an interval between the fixed wrap and the orbiting wrap gradually increases towards the suction chamber from the discharge chamber.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: July 28, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jungsun Choi, Howon Lee, Cheolhwan Kim
  • Patent number: 10718328
    Abstract: A threaded spindle machine includes a metal middle housing part (12) arranged between housing end caps (24) and forming a fluid chamber (16) for receiving a plurality of threaded spindles rotatably supported in the housing end caps (24); an insert (18) adhered into the middle housing part, which insert forms a wear-resistant running surface for the threaded spindles on the inner wall of the fluid chamber (16) and defines an adhesive gap (20) with the inner surface of the middle housing part (12); and at least one filling channel (26) leading from an outer surface of the middle housing part (12) to the adhesive gap (20), and the filling channel (26) extends from an end of the middle housing part (12) which is adjacent to a housing end cap (24).
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 21, 2020
    Assignee: Brinkmann Pumpen K.H. Brinkmann GmbH & Co. KG
    Inventors: Markus Helpertz, Matthias Radermacher
  • Patent number: 10718332
    Abstract: A water lubrication air compression system disposes an lubricant heat dissipation system at a bearing chamber close to the high pressure end of the compressor for cooling and circulating lubricant due to the rise of temperature during operation of the compressor, hence enhancing the ability and stability of the compressor. On the other hand, a negative pressure system is connected to the air chambers between the oil lubrication and the water lubrication of the compressor in order to provide a negative pressure. If any leak of water vapor at the compressor chamber or oil vapor at the bearing chamber, the negative pressure system is able to produce a negative pressured condition toward the sealing structure so that the oil lubrication can be effectively isolated from the water lubrication and inter-contamination between the lubricant and water can be avoided.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 21, 2020
    Assignee: FU SHENG INDUSTRIAL CO., LTD.
    Inventors: Min-Jen Tsai, Feng-Yung Lin, Chih-Lung Tseng
  • Patent number: 10712058
    Abstract: A rotary compressor includes: a closed upright cylindrical compressor housing including an upper portion provided with a discharge section of refrigerant and a body portion provided with an intake section of the refrigerant; a compression section disposed at a lower part in the compressor housing and configured to compress the refrigerant suctioned by the intake section to discharge the refrigerant from the discharge section; and a motor disposed at an upper part in the compressor housing and configured to drive the compression section. The motor has a rotor disposed on an inner side and a stator disposed on an outer side, the refrigerant is HFO1123 refrigerant or a refrigerant mixture containing the HFO1123 refrigerant, and an inner welded portion formed by welding using flux is provided within a projection area of the rotor at the upper portion of the compressor housing.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: July 14, 2020
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Shunji Itakura, Ken Horiguchi, Toshiyuki Fuji, Sota Shimada, Kazuya Funada, Kenji Komine, Junya Tanaka
  • Patent number: 10697455
    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: December 4, 2017
    Date of Patent: June 30, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang baek Park, Jungsun Choi, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 10697298
    Abstract: An oil-lubricated slide vane rotary vacuum pump with a slide vane unit, and with an oil separating and reconditioning device, wherein oil and gas are separated by separating devices, possibly complemented by oil coolers and/or oil pumps. One or more monitoring and/or servicing devices are provided, and the oil separating and reconditioning device is installed in an oil separating and reconditioning housing. Side walls extend transversely to a plane of rotation of a slide vane rotor, and define a longitudinal extent of the oil separating and reconditioning housing. The one or more monitoring and/or servicing devices are arranged only in one or more cover parts which are attached to one or both end walls of the oil separating and reconditioning housing. The oil separating and reconditioning housing is formed with the side walls, the bottom wall and the top wall without being configured for a monitoring and/or servicing device.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 30, 2020
    Assignee: Gebr. Becker GmbH
    Inventors: Artjom Kraft, Islam Akyildiz, Markus Loebel, Frank Rischewski