Patents Examined by Mary A. Davis
  • Patent number: 10808696
    Abstract: A gear pump or motor includes a main pump or motor connected to a drive source, and an auxiliary pump or motor. The main pump or motor includes helical main drive and driven gears, and a main drive shaft. A main connection part is formed at a leading end surface of the main drive shaft. The auxiliary pump or motor includes an auxiliary drive shaft extending toward the main drive shaft, an auxiliary connection part formed at a leading end face of the auxiliary drive shaft. A connecting member connects the main and auxiliary connection parts, and is in contact with an outer edge portion of the leading end face of the main drive shaft. A space opposes a receiving surface of the connecting member. The receiving surface opposes the auxiliary pump or motor. High-pressure operating fluid is supplied to the space.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 20, 2020
    Assignee: Daikin Industries, Ltd.
    Inventor: Katsunari Tsuzuki
  • Patent number: 10801496
    Abstract: The invention relates to a positive-displacement machine according to the spiral principle, particularly a scroll compressor, having a high-pressure region, which comprises a high-pressure chamber, furthermore having a low-pressure chamber and an orbiting positive-displacement spiral, which engages into a counterpart spiral in such a manner that compression chambers are formed between the positive-displacement spiral and the counterpart spiral, in order to accommodate a working medium, wherein a counterpart-pressure chamber is constructed between the low-pressure chamber and the positive-displacement spiral.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 13, 2020
    Assignee: OET GmbH
    Inventors: Frank Obrist, Christian Schmälzle, Christian Busch
  • Patent number: 10794187
    Abstract: The present invention includes a case, a driving motor, a rotating shaft, a cylinder having a compression space formed in a central portion thereof, a roller, a main bearing and a sub bearing, and a vane for partitioning the compression space into a suction chamber and a compression chamber, wherein the vane includes a vane housing provided with a space portion and a communication hole formed through one side of a front end portion thereof to form a flow path of a compressed refrigerant, and a valve member slidably installed in the space portion of the vane housing and selectively communicating the space portion with the compression chamber, wherein the flow path of the compressed refrigerant is formed by the movement of the valve member.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: October 6, 2020
    Assignee: LG Electronics Inc.
    Inventors: Joonhong Park, Bumdong Sa
  • Patent number: 10774646
    Abstract: A rotary engine having a crankshaft, a housing provided with lobe accommodating portions arranged to surround the crankshaft, and combustion chambers communicating with the lobe accommodating portions, a rotor rotatable eccentrically with respect to the crankshaft and provided with lobes continuously accommodated in the lobe accommodating portions, a housing cover provided with a bearing portion through which the crankshaft is inserted so as to be rotatably supported, and a lubricating unit to supply oil to the bearing portion, wherein the lubricating unit includes an oil pan to accommodate oil therein, an oil pump to pump up oil filled in the oil pan, and an oil supply passage having both ends located in the oil pump and the bearing portion, respectively, is provided. This structure may allow direct and effective lubrication of the bearing portion, and can employ a journal bearing.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: September 15, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yunhi Lee, Byeonghun Yu, Byeongchul Lee
  • Patent number: 10774835
    Abstract: A vacuum pump with a primarily cylinder-shaped pump housing is provided. A bowl-shaped sound-absorbing cover is attached on the pump housing and a circumferential gap space for sound absorption is formed between the pump housing and the sound-absorbing cover. The pump housing has an end face in which at least one air outlet opening is arranged. An elastic upstream sound absorber element is arranged between the end face and the sound-absorbing cover so that an upstream chamber is formed therebetween into which the air flows from the air outlet opening. The upstream sound absorber element has a molded projection facing the end face with an air channel passing through the projection. The projection is arranged at a distance from the end face during operation of the vacuum pump. While the vacuum pump is idle, the projection makes contact with the end face through elastic deformation of the upstream sound absorber element, causing the air channel to be closed off and creating a check valve function.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 15, 2020
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Ingo Geue, Theodor Hüser, Christian Praest, Thomas Valeiras Fernandez
  • Patent number: 10774834
    Abstract: A spherical compressor is provided. A cylinder body and a cylinder head are combined to form a spherical inner cavity. A sliding chute swinging mechanism is arranged between a piston shaft and a piston shaft hole or between a turntable shaft and a turntable shaft hole. The turntable shaft is driven to rotate so that a piston swings along a sliding chute relative to the axis of the piston shaft hole, or a turntable swings along the sliding chute relative to the axis of the turntable shaft hole, so as to form a V1 working chamber and a V2 working chamber with alternatively variable volumes in the spherical inner cavity.
    Type: Grant
    Filed: October 20, 2018
    Date of Patent: September 15, 2020
    Assignee: Shenzhen Zhongke Zheng'an Science & Technology Partnership Enterprise (limited partnership)
    Inventors: Luyi Wang, Zhengping Li
  • Patent number: 10753359
    Abstract: A crankshaft assembly for a scroll compressor is disclosed. The crankshaft assembly includes a crankpin having a plurality of apertures therethrough. A crankshaft body has an aperture therethrough. The aperture of the crankshaft and one of the plurality of apertures of the crankpin being aligned when in an assembled state such that in operation fluid flows between the aperture of the crankshaft body and the one of the plurality of apertures of the crankpin. The crankshaft body includes a second aperture aligned with a second of the plurality of apertures of the crankpin. The crankpin and the crankshaft body are separate members. A fastener extends through the second of the plurality of apertures of the crankpin and into the second aperture of the crankshaft body to secure the crankpin and the crankshaft body together in the assembled state.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: August 25, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Daniel R. Crum, Kenneth Andrew Raymond, George Hansen, Michael G. Benco
  • Patent number: 10753360
    Abstract: The scroll compression device includes a first scroll element (11) having a first base plate (13) and a first spiral wrap (14); a second scroll element (12) having a second base plate (15) and a second spiral wrap (16), one of the first and second scroll elements (11, 12) being configured to perform an orbiting movement in relation to the other one of the first and second scroll elements, the first and second scroll elements (11, 12) intermeshing with each other and delimiting compression chambers (17); and a sealing device (28) arranged in an end face (19) of the first spiral wrap (14) and having a sealing surface configured to cooperate with the second base plate (15).
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: August 25, 2020
    Assignee: Danfoss Commercial Compressors
    Inventors: Remi Bou Dargham, David Genevois, Dominique Gross
  • Patent number: 10746175
    Abstract: A scroll compressor includes a casing having a cylindrical barrel and lid, a compression mechanism having fixed and movable scrolls, and a suction passage that sends a fluid into a compression chamber. The fixed scroll includes a fixed-side end plate, a fixed-side wrap standing upright on the fixed-side end plate, and a suction hole. The suction hole is capable of communicating with the compression chamber. The suction passage includes an insertion pipe portion inserted into a through hole of the lid, and an in-plate passage formed in the fixed-side end plate and having an outflow opening opened toward the suction hole. A center of the through hole is closer to an axis of the barrel than a center of the outflow opening of the in-plate passage. An entirety of the suction passage is positioned radially outward of a portion, of the through hole, closest to the axis of the barrel.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: August 18, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuo Takahashi, Yasuhiro Murakami
  • Patent number: 10746174
    Abstract: The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a drive shaft (16); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including orbital discs (28) respectively arranged in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) cooperating with an inner circumferential bearing surface (32) of the respective circular receiving hole (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (50), the lubrication system including lubrication passages (41) formed within the support arrangement (5), each lubrication passage (41) including an oil outlet aperture (41.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 18, 2020
    Assignee: Danfoss Commercial Compressors
    Inventors: Arnaud Daussin, Sebastien Denis, David Genevois, Remi Bou Dargham
  • Patent number: 10738776
    Abstract: In a gear pump device for rubber extrusion, prolongation of the maintenance intervals is intended by preventing rubber scorch occurring at the gear support-shaft portion. It has a bushing ring 5 inserted in a gear-housing bore 3 of a housing 4. The bushing ring 5 rotatably supports a support-shaft portion 7 of a gear 2 accommodated in the gear-housing bore 3. The bushing ring 5 has a bearing 15 and a sealing means 16 built-in. The sealing means 16 includes a seal ring 22 of which cross section is ]-shaped and which has a first lip portion 22i contacting with the outer peripheral surface of the support-shaft portion 7, a second lip portion 22o disposed outside thereof in the radial direction, and a side wall portion 22m connecting between outer ends in the axial direction, of the first and second lip portions 22i, 22o.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: August 11, 2020
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., NAKATA ENGINEERING CO., LTD.
    Inventors: Hiroyuki Onimatsu, Nozomu Nishioka, Hiroshi Ihara, Noboru Ishihara, Naoyasu Nakao
  • Patent number: 10738777
    Abstract: A scroll compressor lubrication system and a scroll compressor are disclosed. The scroll compressor includes a capacity modulator, a lubricant opening, and a gas diverting passage. The capacity modulator is in fluid communication with compression pockets for selectively unloading gas from the pockets. The lubricant opening is in fluid communication with at least one bearing portion of the scroll compressor. Lubricant from the at least one bearing portion in the scroll compressor flows through the lubricant opening. The gas diverting passage includes an inlet and an outlet. The inlet of the gas diverting passage is in fluid communication with the capacity modulator, and the gas diverting passage extends below the lubricant opening such that gas from the outlet of the gas diverting passage can flow through a travel path of the lubricant that flows through the lubricant opening and entrains at least part of the lubricant to at least one bearing portion for lubrication.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: August 11, 2020
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Daniel R. Crum, Eric S. Mlsna, Jerry A. Rood
  • Patent number: 10731646
    Abstract: An embodiment provides a vane pump device including a pump unit that includes a high pressure side discharge through-hole which discharges oil, and a low pressure side discharge through-hole which discharges oil; and a housing which accommodates the pump unit, and includes a high pressure side discharge passage that is formed between the high pressure side discharge through-hole and a high pressure side discharge outlet through which oil discharged from the high pressure side discharge through-hole of the pump unit is discharged to the outside, and a cover low pressure side discharge passage and a case low pressure side discharge passage that are formed between the low pressure side discharge through-hole and a low pressure side discharge outlet through which oil is discharged to the outside, and that are shorter than the high pressure side discharge passage.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: August 4, 2020
    Assignee: Showa Corporation
    Inventor: Toshio Nishikawa
  • Patent number: 10731465
    Abstract: A rotor assembly has a vane which engages an eccentric cam block using an insert. The insert is removably attached to the vane. The vane is captured within a transverse slot in the rotor and executes reciprocal motion transversely to the axis of rotation of the rotor as the rotor rotates.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 4, 2020
    Assignee: Torad Engineering LLC
    Inventors: John Montgomery, Gregory T. Kemp, Joseph Orosz
  • Patent number: 10724522
    Abstract: A screw compressor comprising a compressor element with a housing in which two helical rotors are mounted on bearings by their shafts, and a gearbox—with a housing with a mounting surface that is built onto a mounting surface of the housing of the compressor element, and which is coupled in a torque-transmitting way to a shaft of at least one of the aforementioned rotors, whereby the compressor element is provided with an oil circuit with an input and an output for oil and a cooling jacket with an input and output for a coolant, wherein the aforementioned inputs and outputs for the oil and for the coolant are located in the aforementioned mounting surface of the housing of the compressor element, whereby these inputs and outputs connect to channels for the respective supply and removal of the oil and the coolant.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: July 28, 2020
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Simon Peter G. De Bock, Johan Nachtergaele
  • Patent number: 10718331
    Abstract: Disclosed is a compressor. A lubrication surface, which has the same curvature as an inner circumferential surface curvature of a cylinder and which has a predetermined circumference length, is formed on an outer circumferential surface of a roller contacting an inner circumferential surface of the cylinder. With such a configuration, since the outer circumferential surface of the roller contacting the inner circumferential surface of the cylinder come in surface-contact with each other, an oil film is formed between the roller and the cylinder with a wide area. This can reduce a frictional loss.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: July 21, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Seokhwan Moon, Yunhi Lee, Byeongchul Lee
  • Patent number: 10697456
    Abstract: A scroll compressor is provided that may include a motor; an orbiting scroll; a fixed scroll coupled to the orbiting scroll, and forming a compression chamber together with the orbiting scroll; a frame coupled to the fixed scroll, and configured to support the orbiting scroll; a sealing member mounting groove having a ring shape, and formed on a first surface of the frame contacting the orbiting scroll, or a second surface of the orbiting scroll contacting the frame; and a sealing member including a first sealing portion formed in a ring shape, inserted into the sealing member mounting groove so as to be moveable in an axial direction, and configured to perform a sealing operation between the frame and the orbiting scroll in the axial direction and including a second sealing portion extending from the first sealing portion in the axial direction, and configured to perform a sealing operation between the frame and the orbiting scroll in a radial direction by contacting an outer side wall surface of the sealing
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: June 30, 2020
    Assignee: LG Electronics Inc.
    Inventors: Howon Lee, Jungsun Choi, Cheolhwan Kim
  • Patent number: 10677246
    Abstract: A compressor and method for controlling the volume ratio of a compressor is provided. The compressor includes a an intake passage, a discharge passage and a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage. At least one opening is positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage, the at least one opening being sized and positioned to automatically vary a volume ratio in the compressor in response to a varying pressure differential between the intake passage and the discharge passage.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: June 9, 2020
    Assignee: Johnson Controls Technology Company
    Inventor: Paul Nemit, Jr.
  • Patent number: 10670014
    Abstract: An oil-injected vacuum pump element, where two mating helical rotors are rotatably provided in a housing, where this housing includes an inlet port and an outlet end face with an outlet port, where compression chambers are formed between the helical rotors and the housing. The vacuum pump element is provided with a connection that extends from a first compression chamber to a second smaller compression chamber at the outlet end face, where this first compression chamber is at a lower pressure than the second compression chamber and where this second compression chamber can make connection with the outlet port upon rotation of the helical rotors, where the connection is such that a flow from the second compression chamber to the first compression chamber is possible, where the connection is not directly connected to the outlet port.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 2, 2020
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Jens Boeckx, Jozef Maria Segers
  • Patent number: 10669933
    Abstract: A drive architecture comprises a rotor and a gearbox for driving the rotor. A pair of input gears provides rotational drive to the gearbox. A first recuperative cycle engine drives one of the pair of gears and a second engine drives the other of the pair of gears. The first recuperative cycle engine and the second engine are both gas turbine engines. A power takeoff from a drive shaft of the second engine supplies rotational drive to drive at least one component in the first recuperative cycle drive.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 2, 2020
    Assignee: Raytheon Technologies Corporation
    Inventor: Daniel Bernard Kupratis