Patents Examined by Deming Wan
  • Vacuum pump having a silencer
    Patent number: 11274668
    Abstract: A vacuum pump comprises rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: March 15, 2022
    Assignee: LEYBOLD GMBH
    Inventors: Dieter Kolvenbach, Otmar Cornely, Peter Birch
  • Fluid compressor having discharge port and valve
    Patent number: 11268510
    Abstract: A fluid compressor is provided. The fluid compressor includes a case including an inlet configured to introduce fluid to be compressed, a compression unit including a compression chamber configured to compress the fluid introduced into the case, and a discharge port configured to discharge the compressed fluid to the outside of the compression chamber, a motor configured to drive the compression unit, and a valve configured to open and close the discharge port. The valve includes a fastening portion coupled to the compression unit to be spaced a first distance from the discharge port.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: March 8, 2022
    Assignee: LG Electronics Inc.
    Inventors: Jaeha Lee, Jinho Kim, Sungyong Ahn, Yoonsung Choi
  • Rotary internal combustion engine with unequal volumetric ratios
    Patent number: 11261781
    Abstract: A rotary internal combustion engine including a rotor assembly where at least a first and a second of the combustion chambers have unequal theoretical volumetric ratios. Also, a rotary internal combustion engine including first and second rotor assemblies where at least one of the combustion chambers of the first rotor assembly and at least one of the combustion chambers of the second rotor assembly have unequal effective volumetric compression ratios and/or unequal effective volumetric expansion ratios.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 1, 2022
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Serge Dussault, Andre Julien, Michael Lanktree, Edwin Schulz
  • Compressor having external temperature sensor and method of manufacturing compressor
    Patent number: 11261866
    Abstract: A compressor includes a casing having a cylindrical portion, a compression mechanism fixed to an inner peripheral surface of the cylindrical portion, an external portion, a weld nut, and a bolt. The external portion includes a temperature reaction portion that reacts to a temperature change of the cylindrical portion. The external portion is mounted on an outer peripheral surface of the cylindrical portion. The weld nut is welded to the outer peripheral surface of the cylindrical portion to mount the external portion on the outer peripheral surface of the cylindrical portion. The bolt fixes the external portion to the weld nut.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: March 1, 2022
    Assignee: Daikin Industries, Ltd.
    Inventors: Hirohito Kaida, Takekazu Obitani, Hitoshi Shibata, Yasutaka Ueno, Yuusuke Fujii
  • Offset stator bores for pump sealing
    Patent number: 11255326
    Abstract: A pump includes a first housing part defining a first portion of a bore extending within the first housing part and shaped to receive a rotor; and a second housing part defining a second portion of the bore extending within the second housing part and shaped to receive the rotor. The first housing part has a first face abutable against an opposing second face of the second housing part to position the first portion of the bore with the second portion of the bore to receive the rotor. The first portion of the bore has a first circular cross-section portion centered along the first face and the second portion of the bore having a second circular cross-section portion centered, within the second housing part, at a distance from the second face.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: February 22, 2022
    Assignee: Edwards Limited
    Inventors: Alan Ernest Kinnaird Holbrook, David Bedwell
  • Pump end plate manufacturing method and pump
    Patent number: 11255330
    Abstract: A manufacturing method of an end plate of a pump that can remove a sag includes: punching a workpiece from a plate material, the workpiece being the end plate including a mounting seat including a fastener; forming a pressed trace surface by pressing an outer edge of an outer surface, when a surface, of both front and back surfaces of the punched workpiece, further from a sag formed on a cut end surface is the outer surface, and a surface, of both front and back surfaces of the punched workpiece, nearer to the sag is an inner surface. A section of the pressed trace surface disposed along an outer edge of the mounting seat is a fastening section. A section of the pressed trace surface other than the fastening section is a non-fastening section. A radial width of the fastening section is shorter than that of the non-fastening section.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 22, 2022
    Assignee: TAIHO KOGYO Co., Ltd.
    Inventors: Syuhei Nishida, Satoshi Ikeda, Kazuya Mizuno, Ken Nakamuta
  • Lattice-cored additive manufactured compressor components with fluid delivery features
    Patent number: 11248595
    Abstract: A light-weight, high-strength compressor component having at least one fluid delivery feature that is formed via additive manufacturing is provided. The component may have at least one interior region comprising a lattice structure that comprises a plurality of repeating cells. A solid surface is disposed over the lattice structure. The interior region comprising the lattice structure has at least one fluid delivery feature for permitting fluid flow through the body portion of the light-weight, high-strength compressor component. The fluid delivery feature may be a flow channel, a fluid delivery port, a porous fluid delivery feature, or the like that serves to transfer fluids through the component, such as refrigerant and/or lubricant oils. Methods of making such compressor components via additive manufacturing processes are also provided.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 15, 2022
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Marc J. Scancarello, Robert C. Stover
  • Compressor having centrifugation and differential pressure structure for oil supplying
    Patent number: 11248608
    Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: February 15, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Kangwook Lee, Taekyoung Kim, Cheol Hwan Kim, Byeongchul Lee
  • Multi-stage vacuum booster pump rotor
    Patent number: 11248607
    Abstract: A rotor for a multi-stage vacuum pump, a multi-stage vacuum pump and a method. The rotor comprises: a plurality of rotary vanes, the plurality of rotary vanes being axially displaced and coaxially aligned; a pair of end shafts, each end shaft extending from opposing axial ends of the plurality of rotary vanes; and an inter-vane shaft extending between adjacent rotary vanes of the plurality of rotary vanes, the inter-vane shaft having a diameter which is greater than that of the end shafts. In this way, the inter-vane shaft provided between each rotary vane may have an increased diameter, which improves the stiffness of the shaft and changes the modal frequency of the rotor. Such a change in the modal frequency is typically sufficient to improve its operation.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 15, 2022
    Assignee: Edwards Limited
    Inventor: Michael Henry North
  • Pendulum oil pump
    Patent number: 11248601
    Abstract: A pendulum pump includes a housing, a cover positioned on the housing and forming a cavity therebetween, an inner rotor and an outer rotor positioned within the cavity, wherein the inner rotor is connected via a plurality of pendulums to the outer rotor, and the pendulums are mounted to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump, and a protective plate positioned within the cavity and against a surface of one of the housing and the cover.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: February 15, 2022
    Inventors: Liviu Marinica, Mihajlo Soc, Steven Fletcher, Adam Rossetto
  • Scroll compressor and refrigeration cycle apparatus
    Patent number: 11248604
    Abstract: In a scroll compressor, a first flow passage is formed in a fixed base plate and a frame to supply oil separated by an oil separating mechanism provided in a sealed container to an oil sump at the bottom of the sealed container. In the fixed base plate, a second flow passage is formed to supply the oil separated by the oil separating mechanism into a compression mechanism.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: February 15, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Wataru Iwatake, Shin Sekiya, Raito Kawamura, Kei Sasaki
  • Rotary compressor
    Patent number: 11225971
    Abstract: A compression part of a rotary compressor includes an intermediate partition plate that is arranged between an upper cylinder and a lower cylinder, an upper vane that sections an upper cylinder chamber formed within the upper cylinder into an upper suction chamber and an upper compression chamber, and a lower vane that sections a lower cylinder chamber formed within the lower cylinder into a lower suction chamber and a lower compression chamber. The intermediate partition plate is formed with an injection hole that injects a liquid refrigerant into the upper compression chamber and the lower compression chamber and an injection passage that supplies the liquid refrigerant to the injection hole. The injection passage is formed along a straight line that does not cross a rotary shaft insertion hole into which a rotary shaft is inserted.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: January 18, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Kenshi Ueda, Yasuyuki Izumi
  • Compressor including rotational shaft with refrigerant flow path
    Patent number: 11221007
    Abstract: A compressor is provided that may include a refrigerant flow path provided in a rotational shaft so as to guide a refrigerant gas. The rotational shaft operates a compression device using a drive force of an electric motor. In such a structure, the refrigerant gas may be directly discharged to a discharge space without passing through other portions such that flow path resistance may be minimized.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: January 11, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Donggeun Lee, Sungchoon Kim
  • Scroll compressor having wrap with reinforcing portion
    Patent number: 11209001
    Abstract: A scroll compressor is provided that may include an orbiting scroll having an orbiting wrap, and which performs an orbiting motion; and a fixed scroll having a fixed wrap to form a compression chamber including a suction chamber, an intermediate pressure chamber, and a discharge chamber, by being engaged with the orbiting wrap. A wrap thickness of the fixed wrap may be greater than a wrap thickness of the orbiting wrap within a range which forms the suction chamber. With such a configuration, even if the fixed scroll or the orbiting scroll is thermally-expanded, a transformation of the fixed wrap at a suction side may be prevented. This may prevent a gap between the fixed wrap and the orbiting wrap at an opposite side to the suction side, thereby enhancing compression efficiency.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: December 28, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Cheolhwan Kim, Yongkyu Choi, Taekyoung Kim
  • Compressor with a muffler
    Patent number: 11209003
    Abstract: Disclosed herein is a scroll compressor in which the discharge hole is formed to have an axial length less than an axial length of the fixed shaft accommodation portion, thereby increasing efficiency.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: December 28, 2021
    Assignee: LG Electronics Inc.
    Inventors: Howon Lee, Taekyoung Kim, Cheolhwan Kim
  • Fuel pump having a motor housing and pump housing against one another
    Patent number: 11199167
    Abstract: A fuel pump, in which a connecting piece for a fuel line and electrical connecting lines are radially guided in a motor housing, includes an electric motor. The motor housing has a section made of plastic such that the fuel pump has reduced axial dimensions.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: December 14, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Dirk Becker, Michael Bämpfer, Jens Missun, Marc Völker
  • Miniature high pressure pump and electrical hydraulic actuation system
    Patent number: 11193507
    Abstract: Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi-directional operation. In some embodiments the actuation system includes a motor-driven, reversible operation gear pump providing fluid under pressure to a rod and cylinder.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: December 7, 2021
    Assignee: Purdue Research Foundation
    Inventors: Andrea Vacca, Gabriele Altare
  • Scroll compressor
    Patent number: 11193476
    Abstract: A scroll compressor is provided which comprises: a housing; a driving motor; an orbiting scroll rotated by the driving motor; a fixed scroll; a suction port provided in the housing and suctioning a refrigerant; an oil separator in the housing at one side of the fixed scroll; and a discharge port for discharging, to the outside of the housing, the refrigerant from which oil is separated in the oil separator. The scroll compressor includes an intermediate housing; a back pressure chamber in the intermediate housing at one side of the orbiting scroll, first and second back pressure seal members in the intermediate housing; a plurality of anti-rotation rings in the intermediate housing; and a plurality of anti-rotation pins at the orbiting scroll to be inserted into each of the plurality of anti-rotation rings.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 7, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang-hee Cho, Moo-seong Bae, Sung-kwang Oh
  • Spiral compressor with oil recirculation unit
    Patent number: 11193487
    Abstract: A scroll compressor with oil return unit, having a fixed spiral and an orbiting spiral, which compresses gas from a suction-pressure chamber into a high-pressure chamber. A counter-pressure chamber is connected to the orbiting spiral and the orbiting spiral presses onto the fixed spiral. The oil return unit has a counter-pressure spiral nozzle having a high-pressure channel connected to an end face for oil supply. A suction-pressure spiral nozzle with a suction-pressure channel connected to the end face discharges oil into the suction-pressure chamber. A counter-pressure channel is arranged between the counter-pressure spiral nozzle and the suction-pressure spiral nozzle for discharging oil into the counter-pressure chamber.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: December 7, 2021
    Assignee: HANON SYSTEMS
    Inventors: Dirk Gutberlet, Kadir Dursun, Michael Friedl
  • Compressor with discharge valve
    Patent number: 11174861
    Abstract: Provided is a compressor including a valve unit including: at least two guide pins passing through a discharge valve; and through holes allowing the guide pins to pass therethrough to control oblique motion of the discharge valve with respect to a horizontal direction during up and down movement of the discharge valve. When the discharge valve obliquely moves up and down with respect to the horizontal direction, the guide pin comes into contact with at least two points of an inner circumferential surface of the through hole so that the oblique movement of the discharge valve is restricted, thereby improving the durability of the discharge valve and reducing noise during operation of the compression.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: November 16, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Hea Cho, Yang Sun Kim, Jong Cheun Seo, Tae Yoon Kim, Tae Hoon Choi