Patents Examined by Deming Wan
  • Patent number: 11408420
    Abstract: The present invention aims to provide a long-life stator and a uniaxial eccentric screw pump provided with the stator, which enable a comparatively extended period of use by preventing damage of the stator due to repeating of attachment and removal to/from the uniaxial eccentric screw pump. A stator 20 includes an outer cylinder 30, and a stator main body 42 having flange-shaped gasket parts 46 and 47. The stator 20 includes fixing areas 24 and 25 to which the gasket parts 46 and 47 and the outer cylinder 30 are adhered. One or both of the outer cylinder 30 and the gasket parts 46 and 47 has a derricking part penetrating or being dented in axial directions X and made into such a shape where at least part of one of the outer cylinder and the gasket parts is fitted into the other.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: August 9, 2022
    Assignee: Heishin Ltd.
    Inventor: Takashi Hashima
  • Patent number: 11408423
    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. In a state in which the orbiting scroll and the fixed scroll are concentric with each other, when a distance between the orbiting wrap and the fixed wrap is defined as an orbiting radius, there exists an offset section having an interval larger than the orbiting radius, between a side surface of the orbiting wrap and a side surface of the fixed wrap which faces the orbiting wrap. With such a configuration, even if the fixed scroll or the orbiting scroll is transformed due to thermal expansion, interference between the fixed wrap and the orbiting wrap at a portion having a large transformation amount may be prevented.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: August 9, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongkyu Choi, Kangwook Lee, Cheolhwan Kim, Byeongchul Lee
  • Patent number: 11408421
    Abstract: The present invention discloses a scroll compressor. At least two shrink belts (23?, 23?, 26, 26?, 28, 28?) are provided around the outer periphery of said fixed scroll between the outer periphery of said fixed scroll (2) and the inner wall surface of the upper cap (1) of the scroll compressor. The at least two shrink belts are annular, and are in interference fit between the outer periphery of said fixed scroll and the inner wall surface of the upper cap. The at least two shrink belts include a main shrink belt (23?, 23?, 28) and an assistant shrink belt (26, 26?, 28?). The main shrink belt and the assistant shrink belt are arranged side by side in the axial direction, that is, in the vertical direction of the fixed scroll, and the main shrink belt and the assistant shrink belt are spaced apart from each other by a distance. In this way, it is allowed to add other special structure (e.g.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 9, 2022
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Lin Ma, Wenhu Yao, Kun Qian, Bin Wang
  • Patent number: 11401933
    Abstract: A compressor is disclosed, which comprises a regulate portion provided in at least one of a main frame and a fixed scroll to control or selectively shield an opening of a delivery path or a fixed path.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: August 2, 2022
    Assignee: LG Electronics Inc.
    Inventors: Kyungho Lee, Cheolhwan Kim, Howon Lee
  • Patent number: 11401936
    Abstract: A motor-driven Roots pump includes a housing, a drive shaft and a driven shaft that have axial lines parallel with each other, and a gear chamber. The housing includes a first partition that has a first defining surface, a second partition having a second defining surface, and a relief recess. An addendum circle of the drive gear and an addendum circle of the driven gear intersect with each other at a first intersection point. A plane that includes both the axial lines is defined as an imaginary plane. The first intersection point is located on a side of the imaginary plane on which the drive gear and the driven gear start meshing with each other. An opening of the relief recess is opposed to the first intersection point and is arranged in a region on a side of the imaginary plane on which the first intersection point is located.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: August 2, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Fumiya Shinoda, Daisuke Masaki, Takayuki Hirano, Shintaro Kashiwa, Naoki Takani
  • Patent number: 11396811
    Abstract: A vane pump for providing a pressurized lubricant includes a static pump housing defining an inlet and an outlet, a shiftable control ring with at least one slide support surface, a pump rotor with rotor vanes which rotate within the control ring, and metal slide support pad(s). The control ring shifts with respect to the pump rotor to vary an eccentricity and to thereby control a volumetric pump performance. The pump housing comprises a static control ring housing body which radially surrounds and supports the control ring, and two static pump housing lids which axially support the control ring housing body and the control ring. The control ring housing body is made of plastic. The metal slide support pad(s) is fixed to the static control ring housing body and, together with the at least one slide support surface, provides a friction bearing for the control ring.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: July 26, 2022
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventor: Massimiliano Lazzerini
  • Patent number: 11384760
    Abstract: A lower end plate includes: bolt holes through which bolts penetrate; a lower discharge valve; a lower discharge-valve accommodating recessed portion into which the lower discharge valve is accommodated; and a lower discharge-chamber recessed portion. A lower end plate cover is provided with a bulging portion. A lower end-plate cover chamber is formed by the lower discharge-valve accommodating recessed portion, the lower discharge-chamber recessed portion, and the bulging portion. Refrigerant passage holes include main refrigerant passage holes provided on the lower discharge-chamber recessed portion, and sub-refrigerant passage holes provided between the bolt hole and the lower discharge-valve accommodating recessed portion away from the lower discharge-valve accommodating recessed portion. The bulging portion is, in a cross section orthogonal to a rotating shaft, formed so as to overlap with at least a part of each of the main refrigerant passage holes and the sub-refrigerant passage holes.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 12, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Akira Inoue, Kenshi Ueda, Shingo Yahaba, Yasuyuki Izumi
  • Patent number: 11377953
    Abstract: A rotary fluid pressure device, such as a low-speed, high-torque gerotor motor, is provided with a valve drive shaft that is partially inserted into and engaged with a main drive shaft as the main drive shaft engages a rotating output shaft and engages a rotating and orbiting star member of a positive displacement device. The device is also provided with a drive retainer configured to retain the engagement of the main drive shaft and the valve drive shaft.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 5, 2022
    Assignee: Danfoss Power Solutions II Technology A/S
    Inventors: Jay Paul Lucas, Todd Dean Degler
  • Patent number: 11365732
    Abstract: One embodiment of a pump may include an idler gear having a plurality of idler gear teeth extending radially outward, wherein at least one of the idler gear teeth may be formed with an idler gear cavity therein. The pump may include a drive gear having a plurality of drive gear teeth extending radially outward that may be intermeshed with the idler gear teeth during use. The drive gear may be formed with a recess at on axial end thereof, and the axial position of the recess may correspond to the axial position of the idler gear cavity. In one embodiment of a pump, each idler gear tooth may be formed with an identical idler gear cavity at the same relative position on each idler gear tooth.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: June 21, 2022
    Inventor: Laverne Schumann
  • Patent number: 11365735
    Abstract: A compressor casing having an internal gas passage includes a first bearing housing arranged at a first end of the casing, a second bearing housing arranged at a second, opposite end of the casing, and a rotor case disposed between the first bearing housing and the second bearing housing. The rotor case includes an axially extending bore within which a plurality of rotors are receivable and a hollow internal cavity isolated from the bore. The internal cavity is fluidly coupled to the bore via at least one recess. At least one exit opening is formed in one of the first bearing housing and the second bearing housing. The at least one exit opening is operably coupled to the internal cavity of the rotor case.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: June 21, 2022
    Assignee: CARRIER CORPORATION
    Inventor: Masao Akei
  • Patent number: 11353026
    Abstract: Disclosed is a compressor including a compressing assembly having a decompressing structure to control an amount of oil. The decompressing structure is oriented in parallel with a length direction of the rotation shaft or in a direction toward a discharger from which the refrigerant is discharged.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: June 7, 2022
    Assignee: LG Electronics Inc.
    Inventors: Jungsun Choi, Sangbaek Park, Cheolhwan Kim
  • Patent number: 11353027
    Abstract: A compressor includes a casing configured to accommodate refrigerant and oil, a discharger disposed at a side of the casing and configured to discharge the refrigerant, a driver including a stator and a rotor, a rotation shaft that is coupled to the rotor and that extends in a direction away from the discharger, a compressing assembly that is coupled to the rotation shaft, that is configured to be lubricated with the oil, and that is configured to compress the refrigerant and discharge the compressed refrigerant in the direction away from the discharger, a muffler coupled to the compressing assembly and configured to guide the refrigerant to the discharger, and a bypassing portion disposed outside the casing and configured to transfer the refrigerant or the oil from the muffler to the discharger.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: June 7, 2022
    Assignee: LG Electronics Inc.
    Inventors: Taekyoung Kim, Kangwook Lee, Cheolhwan Kim
  • Patent number: 11353019
    Abstract: Lobe pumps have rings which can be located at least partially in at least one of cover plates and rotors, if not both to provide at least thrust bearings to space the rotors from the cover plates. Some rotors may have voids in ears to make the rotor lighter in weight with the voids potentially capped, symmetrically disposed, arcuately shaped and/or have other desirable features. Some rotors may have ears extending beyond cutouts which may extend beyond hubs, if not beyond hub extensions as well which may receive cover spigots thereabout. Some rings may act as radial bearings as well when located in the cover spigots.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: June 7, 2022
    Assignee: The Bricks Groupe, LLC
    Inventor: Carl Magnus Danielsson
  • Patent number: 11346344
    Abstract: A vane rotary compressor may include a cylinder provided with at least one outlet port; a plurality of bearings coupled to both sides of the cylinder in an axial direction of the cylinder to form a compression space together with the cylinder; a rotational shaft radially supported by the plurality of bearings; a roller rotatably coupled to the rotational shaft and provided with a plurality of vane slots formed in a circumferential direction, each having a first end opened to an outer circumferential surface thereof; a plurality of vanes slidably inserted into the plurality of vane slots of the roller, respectively, and protruding toward an inner circumferential surface of the cylinder to partition the compression space into a plurality of compression chambers, respectively; a discharge valve coupled to the cylinder to open and close the at least one outlet port; and at least one bypass hole formed in at least one of the plurality of bearings or formed in the cylinder to bypass a portion of refrigerant compres
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: May 31, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiyoul Noh, Seokhwan Moon, Jinung Shin
  • Patent number: 11339787
    Abstract: A highly reliable horizontal rotary compressor is provided with a sealed housing, an electric motor, a compression mechanism, a frame which divides the inside of the sealed housing into an electric-motor chamber and a compression-mechanism chamber, and a plurality of bolts that fasten the compression mechanism to the frame. The compression mechanism includes a main bearing fasten to the end surface of a cylinder. A bearing contact-surface of the end surface of the cylinder is in contact with the main bearing, is located closer to the electric motor than a frame contact-surface which is in contact with the frame. The surface roughness of the frame contact-surface is greater than the surface roughness of the bearing contact-surface. The contact-surface of the frame is a single continuous flat surface located above the bolt located at the lowest position among the plurality of bolts.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: May 24, 2022
    Assignee: TOSHIBA CARRIER CORPORATION
    Inventors: Jafet Ferdhy Monasry, Takuya Hirayama, Hideaki Suzuki, Koji Hirano, Masaya Ichihara
  • Patent number: 11339784
    Abstract: A fluid pump includes a stator. A rotor is rotationally operable with respect to the stator. A drive shaft extends from the rotor to a pump assembly that delivers a fluid from an inlet to an outlet. A pump housing includes an interior cavity that contains the stator, the rotor and the pump assembly. A pump cover is disposed at an end of the pump housing. The pump cover defines an end of the interior cavity. A spring assembly biases the pump cover in an axial direction toward the pump assembly.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 24, 2022
    Assignee: GHSP Inc.
    Inventor: Ryan David Rosinski
  • Patent number: 11333149
    Abstract: A recessed part is provided in a position, in which an upper vane and a lower vane slide, in an outer peripheral part of an intermediate partition plate in a rotary compressor. Double of eccentric amounts in an upper eccentric part and a lower eccentric part of a rotating shaft is 30% or more of entire lengths in a sliding direction of the upper vane and the lower vane respectively. A width W of the recessed part in a circumferential direction of the intermediate partition plate is larger than a thickness T of each of the upper vane and the lower vane. When a depth of the recessed part is D and an entire length of each of the upper vane and the lower vane is L, D?0.1√óL . . . Expression 1 is satisfied.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: May 17, 2022
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Akira Inoue, Junya Tanaka
  • Patent number: 11326596
    Abstract: A rotary screw compressor includes a compressor assembly and a drive motor assembly. The compressor assembly includes a compressor housing, a first screw rotor and a second screw rotor installed in the compressor housing and engaged with each other. An end of the first screw rotor is an engaging end. The drive motor assembly includes a motor housing, a motor rotor, a motor stator and a centering bushing installed in the motor housing, and the motor stator installed on an outer side of the motor rotor and capable of driving the motor rotor to rotate, and the centering bushing is passed and connected to the inner circumference of the motor rotor and has an end sheathed on the engaging end, so that the motor rotor can drive the first screw rotor to rotate through the centering bushing and the engaging end.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: May 10, 2022
    Assignee: FUSHENG INDUSTRIAL (SHANGHAI) CO., LTD.
    Inventors: Yung-Sheng Peng, Yu-Feng Wu, Feng-Yung Lin
  • Patent number: 11326453
    Abstract: Provided are: a displacement expanding apparatus, which uses environmentally friendly electrical energy to generate rotational power; and an engine including the displacement expanding apparatus, the novel engine having improved performance and a long lifespan. Also, to realize a novel engine, provided is a novel engine which is environmentally friendly and has a long lifespan.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: May 10, 2022
    Inventor: Lucas Ihsl
  • Patent number: 11326600
    Abstract: A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 10, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya Hattori, Takuro Yamashita, Takumi Maeda, Shinji Koike