Patents Examined by Theresa Trieu
  • Patent number: 10443383
    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: August 5, 2016
    Date of Patent: October 15, 2019
    Assignee: FETU LIMITED
    Inventor: Jonathan Paul Fenton
  • Patent number: 10443598
    Abstract: An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction of the rotor, and supplies oil to the columnar grooves. It includes a low pressure side upstream recess portion, a low pressure side downstream recess portion, and a low pressure side connection recess portion through which the low pressure side upstream recess portion is connected to the low pressure side downstream recess portion. The width of the low pressure side upstream recess portion is equal to that of the low pressure side downstream recess portion. The width of the low pressure side connection recess portion is narrower than that of the low pressure side upstream recess portion.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 15, 2019
    Assignee: Showa Corporation
    Inventor: Toshio Nishikawa
  • Patent number: 10428819
    Abstract: A scroll compressor according to the present invention includes a casing, an orbiting member provided within the casing and performing an orbiting motion, a non-orbiting member forming a compression chamber together with the orbiting member, the compression chamber having a suction chamber, an intermediate pressure chamber and a discharge chamber, a communication passage configured to bypass a refrigerant of the compression chamber into the casing, an opening/closing valve assembly configured to open and close the communication passage, and a switching valve assembly configured to operate the opening/closing valve assembly, the switching valve assembly being provided outside the casing and connected to the opening/closing valve assembly, whereby an installation of the bypass hole can result in prevention of over-compression and an installation of a control valve for varying a capacity outside the casing can result in reduction of costs for the control valve.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 1, 2019
    Assignee: LG Electronics Inc.
    Inventors: Honggyun Jin, Sangwoo Joo
  • Patent number: 10422336
    Abstract: In a cylinder rotary compressor, a shaft-side suction passage for circulation of a refrigerant is formed within a shaft that rotatably supports a rotor. A rotor-side suction passage is provided within the rotor so as to guide the refrigerant flowing out of shaft-side outlets formed at the outer peripheral surface of the shaft to a compression chamber. Furthermore, a rotor-side concave portion is formed at an inner peripheral surface of the rotor. A space provided within the rotor-side concave portion forms a rotor-side communication space with an appropriate shape and a capacity enough to make the shaft-side outlets communicate with a rotor-side inlet of the rotor-side suction passage, regardless of the rotation of the rotor.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 24, 2019
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Ogawa, Yoshinori Murase
  • Patent number: 10418878
    Abstract: An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: September 17, 2019
    Assignee: Tuthill Corporation
    Inventor: Jacob J. Berry
  • Patent number: 10415389
    Abstract: The purpose of the present invention is to provide a scroll fluid machine, the reliability of which is ensured and which can be manufactured with high productivity. The present invention provides a scroll fluid machine comprising: a stationary scroll having a spiral wrap upstanding therefrom; an orbiting scroll provided facing the stationary scroll and orbiting; a casing provided outside the orbiting scroll; a drive shaft for causing the orbiting scroll to orbit; an orbiting bearing for transmitting the rotational movement of the drive shaft to the orbiting scroll; and a plurality of rotation prevention mechanisms for preventing the orbiting scroll from rotating. The scroll fluid machine is characterized in that: the rotation prevention mechanisms have crankshafts and also have crank bearings for supporting the crankshafts; and the gap between each of the crankshafts and the corresponding one of the crank bearings is set to be greater than the gap between the drive shaft and the orbiting bearing.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Fuminori Kato
  • Patent number: 10415175
    Abstract: A rotary compressor includes a cylindrical housing, a cylindrical roller accommodated in the housing, a motor shaft leading through the roller having a cam for rolling the roller along a side wall of the housing, and a discharge port leading through a bottom cover, wherein a height-to-radius ratio of the roller is between 6 and 1.2, a radius of the motor shaft is 8.0 mm or less, a cam height of 14 mm or less, an area of the discharge port of 17 mm2 or more, and a thickness of the discharge port of 2.5 mm or less. For operation of the compressor, a top cover may be put onto the top open side of the housing. The top cover may have a bushing for the shaft. A heat pump includes the compressor. A household appliance, in particular laundry care apparatus, includes the heat pump.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 17, 2019
    Assignees: BSH Hausgeräte GmbH, RECHI PRECISION CO., LTD
    Inventors: Chien Chung Chou, Javier Nagore Iriarte, Iñaki Otero Garcia, Jose Antonio Ruiz Bermejo, Roberto San Martin Sancho
  • Patent number: 10408212
    Abstract: A pump includes a front plate, a gear plate and a rear plate. A drive shaft has a drive gear, an arbor has a driven gear engaged with the drive gear, and first and second bearings are disposed in the gear plate. The first and second bearings receive the drive shaft and the arbor. The rear plate has drain ports adjacent ends of the drive shaft and the arbor. The arbor has an opening such that media that passes between the first bearing and an outer surface of the arbor is directed to the second drain port via the opening. A drain bushing is positioned against the front plate, and includes an opening for the drive shaft. The drain bushing has a chamber and a radial port. When pumped media passes between the first bearing and the drive shaft it is directed to the chamber and out the radial port.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 10, 2019
    Assignee: Circor Pumps North America, LLC
    Inventors: Justin A. Craig, Philip Taylor Alexander
  • Patent number: 10408214
    Abstract: Pressure changing devices and methods of making and using the same are disclosed. One pressure changing device includes an elliptic cylinder and a piston that has an external surface with a trochoid cross-section. Another pressure changing device includes a piston and a rotating cylinder that has an internal surface with a trochoid cross-section. Another pressure changing device includes two fixed axes, one for rotation of one component and another for orbiting or oscillation of the other component. The devices and methods include stacked pressure changing devices with one or more common shafts. The pressure changing device may be easier and less expensive to manufacture and repair than prior pressure changing devices of the same or similar functionality, and can provide efficient gap sealing in a high-pressure expansion part of a compression or expansion cycle.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: September 10, 2019
    Inventor: Sten Kreuger
  • Patent number: 10400601
    Abstract: A rotary piston and cylinder device having a rotor, a stator and a shutter disc, the rotor including a piston which extends from the rotor into the cylinder space, the rotor and the stator together defining the cylinder space, the shutter disc passing through the cylinder space and forming a partition, and the disc having a slot which allows passage of the piston, the shutter disc having a circumferential surface that forms a seal with the rotor, the circumferential surface defining at least one close running line with the rotor, and the at least one close-running line offset from a rotor plane which lies on a radius of the rotor and which includes the axis of rotation of the rotor.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: September 3, 2019
    Assignee: LONTRA LIMITED
    Inventor: Stephen Francis Lindsey
  • Patent number: 10400769
    Abstract: The invention relates to a rotor pair for a compressor block of a screw machine, wherein a rotor pair comprises a secondary rotor that rotates about a first axis and a main rotor that rotates about a second axis, wherein the number of teeth of the main rotor is 3 and the number of teeth of the secondary rotor is 4. The relative profile depth of the secondary rotor is at least 0.5, preferably at least 0.515, and at most 0.65, preferably at most 0.595. rk1 is an addendum circle radius drawn around the outer circumference of the secondary rotor and rf1 is a dedendum circle radius starting at the profile base of the secondary rotor, wherein the ratio of the axis distance of the first axis from the second axis and the addendum circle radius rk1 is at least 1.636, and at most 1.8, preferably at most 1.733.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 3, 2019
    Assignee: Kaeser Kompressoren SE
    Inventor: Gerald Weih
  • Patent number: 10400765
    Abstract: The disclosure provides a gear pump rotor assembly that includes a rotor body, a rotor head having a plurality of gear teeth and being connected to the rotor body, at least one connector extending between the rotor body and the rotor head, at least one radial deformation control member that extends into at least one gear tooth of the rotor head and reduces the radial deformation of the rotor head relative to the rotor body when a change in temperature causes radial deformation of the rotor body and rotor head.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: September 3, 2019
    Assignee: PeopleFlo Manufacturing, Inc.
    Inventors: William R. Blankemeier, Jorge G. Murphy, Clark J. Shafer, Michael P. Thompson, Daniel T. Turner
  • Patent number: 10393077
    Abstract: A fuel pump includes: an outer gear; an inner gear that is meshed with the outer gear and includes a receiving hole; a rotatable shaft; a contact portion that is formed to be contactable with the receiving hole; and a pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction. At least one of the receiving hole and the contact portion includes a tilt surface, which is tilted relative to the axis direction. When the rotatable shaft is rotated to a drive rotation side, the receiving hole contacts the contact portion through the tilt surface, so that the receiving hole is urged in a circumferential direction and is also urged toward the first housing component in the axial direction.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: August 27, 2019
    Assignee: DENSO CORPORATION
    Inventors: Daiji Furuhashi, Hiromi Sakai
  • Patent number: 10393114
    Abstract: An external gear machine (EGM) includes a housing, an inlet, a drive gear positioned in the housing and configured to be (i) driven by a mechanism when the EGM is operated as a pump, or (ii) drive an external mechanism when the EGM is operated as a motor, the drive gear having a plurality of teeth, a slave gear positioned in the housing having a plurality of teeth and configured to be driven by the drive gear, an outlet formed in the housing and configured to receive at least some of the volume of fluid via an outlet fluid communication channel, a first slider defining an inlet fluid communication channel and the outlet fluid communication channel, selective positioning of the first slider configured to vary net operational volumes of fluid communication between the inlet and the outlet, for a given rotational speed of the drive gear.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 27, 2019
    Assignee: Purdue Research Foundation
    Inventors: Andrea Vacca, Ram Sudarsan Devendran
  • Patent number: 10385854
    Abstract: A helical compressor consisting of a casing with at least one fixed spiral; a rotor that has been placed in the casing and has at least one spiral that can be rotated within the casing; a crankshaft that has a main spindle that is mounted on bearings within the casing and an auxiliary spindle that is eccentrically positioned with respect to the geometric axis of the main spindle. The rotor is attached to the auxiliary spindle using a bearing and there is a mechanism present to prevent the rotor from rotating by itself. The rotor has an oil chamber that is connected to the bearing of the auxiliary spindle and a de-gassing channel for the oil chamber that goes through the auxiliary spindle and through part of the main spindle.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 20, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Koen Stoop
  • Patent number: 10371149
    Abstract: A screw compressor element with a housing and two screw rotors that are affixed in the housing in a double cylindrical chamber provided to this end, whereby the housing is provided with an inlet opening on the inlet side of the screw compressor element, whereby the inlet opening extends in the cylindrical walls of the double cylindrical chamber with at least a section that extends in an axial direction, and a transverse section connecting thereto in the form of a strip that extends from the axial section on the inlet side to a side of the section in a direction transverse to the axial direction.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: August 6, 2019
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventor: Koen Roger L Lodefier
  • Patent number: 10364831
    Abstract: A method and system for an air management system (AMS) is provided. The AMS includes a jet pump assembly including a motive air inlet, a plurality of suction inlets, and a single outlet. The AMS also includes a supply piping arrangement including a conduit configured to channel relatively higher pressure air from a compressor to the motive air inlet, a conduit configured to channel relatively higher pressure air from the compressor to at least one of the plurality of suction inlets through a shutoff valve, and a conduit configured to channel relatively lower pressure air from the compressor to at least one of the plurality of suction inlets. The AMS further includes an outlet piping arrangement configured to channel outlet air from said jet pump assembly to a distribution system. A pressure regulation strategy of the motive jet pump flow allows optimization of engine fuel burn and/or thrust, depending on which is most important to the aircraft during any flight phase.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: July 30, 2019
    Assignee: General Electric Company
    Inventors: Jeffrey Lee Mason, Ronald Bruce Schofield, Seth Michael Ray, Benjamin James Schumacher, James Fitzgerald Bonar, George Elliott Moore
  • Patent number: 10359043
    Abstract: An oil-free screw compressor has a screw rotor including a screw and a shaft, a bearing supporting the shaft, a first shaft seal device disposed between the screw and the bearing and including a first seal opposite to the shaft, and a first communication portion communicating the inner periphery face and the outer peripheral face of the first shaft seal device, a second shaft seal device disposed between the first shaft seal device and the bearing and including a second seal opposite to the shaft, and a second communication portion communicating an inner periphery face and the outer peripheral face of the second shaft seal device, and a casing including an atmosphere communication portion connected to both of the first communication portion and the second communication portion on the inner peripheral face of a shaft accommodation space.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 23, 2019
    Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Toshiyuki Miyatake
  • Patent number: 10344595
    Abstract: Disclosed is a vane pump comprising a cam ring accommodated in a pump housing, a rotor accommodated rotatably with respect to a rotational shaft in the cam ring, and a plurality of vanes coupled to the rotor to discharge fluid, wherein the cam ring has a ring shaped inner profile varied between a maximum radius (Rmax) and a minimum radius (Rmin) in a circumferential direction with respect to the rotational shaft, and the ring shaped inner profile comprises: a cycloid curve passing through a maximum radius point; a circular arc passing through a minimum radius point; and a tangent line connecting the cycloid curve to the circular arc with a tangential curvature.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: July 9, 2019
    Assignee: MYUNGHWA IND. CO., LTD.
    Inventor: Sang-woo Kim
  • Patent number: 10344759
    Abstract: A variable displacement oil pump includes an adjustable member that is configured to shift according to changes in pressure inside a control oil chamber. The adjustable member has a long hole. A guide pin is disposed inside the long hole. The guide pin is fixed to either a housing or a cover of the variable displacement oil pump. The width of the long hole is larger at a part of the long hole farther away from a fixed end of the guide pin in its lengthwise direction than at a part thereof closer to the fixed end.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: July 9, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Michitaka Yamamoto, Hisashi Ono, Yuki Nishida