Patents Examined by Mary A. Davis
  • Patent number: 11136975
    Abstract: A pump includes an external gear, an internal gear surrounding the external gear to mesh with the external gear, a pump chamber to house the internal gear and the external gear, a suction inlet to suck an oil into the pump chamber, and a discharge outlet to discharge the oil from inside the pump chamber. The housing includes an outer cover having the pump chamber defined therein, and a first oil passage defined in the outer cover and connected to the discharge outlet. The motor shaft includes a second oil passage connected to the first oil passage, and a first through hole to connect the second oil passage to the motor shaft. The second oil passage opens into the first oil passage at the end portion of the motor shaft.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: October 5, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Yuki Ishikawa
  • Patent number: 11136981
    Abstract: A scroll compressor may include a rotational shaft, the rotational shaft including a first frame support having an inner circumferential surface, into which a boss of a first scroll is inserted, and an outer circumferential surface that forms an outer surface of the rotational shaft; and at least one guide hole that extends from the inner circumferential surface to the outer circumferential surface.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: October 5, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Sungyong Ahn, Jinho Kim, Junghoon Park, Junchul Oh, Byeongchul Lee, Jaeha Lee, Seheon Choi
  • Patent number: 11131307
    Abstract: A supercharger rotor comprising a plurality of lobes around a center axis, each lobe of the plurality of lobes comprising a rotor profile. The rotor profile comprises a tip, a convex addendum comprised of at least two interpolated and stitched spline curves, an undercut region, and a root base.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: September 28, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: Kartikeya K Mahalatkar, Pavan Chandras, Matthew G Swartzlander, Rajeshekhar G Bagalakoti, Daniel Ouwenga, Sneha Abhyankar
  • Patent number: 11131305
    Abstract: A scroll compressor includes a fixed scroll, a movable scroll revolvable with respect to the fixed scroll, and a crankshaft rotatable to cause the movable scroll to revolve. A discharge port is formed in a first scroll of the fixed scroll or the movable scroll. A cutout portion is formed in a second scroll of the fixed scroll or the movable scroll. The cutout portion formed in the second scroll at least partially passes through a profile of the discharge port formed in the first scroll because of revolution of the movable scroll.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: September 28, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuo Mizushima, Yasuhiro Murakami, Ryouta Nakai, Masahiro Noro
  • Patent number: 11131194
    Abstract: A rotor assembly for a rotary internal combustion engine is provided. The rotor assembly includes a rotor having a radial groove defined radially in a peripheral surface of the rotor. The groove has a depth and an intermediate shoulder at an intermediate depth. The groove has a first width therealong that is narrower than an intermediate width at the shoulder. An apex seal is received in the groove and protrudes from the peripheral face of the rotor. The apex seal is configured to move radially between a first position and a second position outward of the first position. A biasing member biases the apex seal toward the second position. A platform is disposed in the groove between the apex seal and the biasing member and has a width greater than the first width.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: September 28, 2021
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Johnny Vinski, David Gagnon-Martin, Jean-Gabriel Gauvreau, Roger Huppe
  • Patent number: 11131306
    Abstract: The invention relates to a displacement machine according to the spiral principle, in particular a scroll compressor, with a high-pressure zone which comprises a high-pressure chamber, with a low-pressure chamber and with an orbiting displacement spiral, which engages into a counter spiral such that between the displacement spiral and the counter spiral compression chambers are formed, in order to receive a working medium, wherein between the low-pressure chamber and the displacement spiral a counter pressure chamber is formed.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: September 28, 2021
    Assignee: OET GmbH
    Inventors: Frank Obrist, Christian Schmälzte, Christian Busch
  • Patent number: 11125228
    Abstract: A blocking device for a pump having a rotor that is rotatable about a rotation axis in a pump duct and comprises a rotor hub and a rotor collar that extends from the rotor hub in the radial direction and encircles it in an undulating manner, wherein the blocking device comprises a plurality of blocking elements which are configured to block the pump duct in the axial direction on both sides of the rotor collar, wherein each of the plurality of blocking elements has a slot with a U-shaped sealing profile for abutting against the rotor collar, a sealing face for abutting against the rotor hub, and two contacting faces for abutting against a seat of the pump duct and/or against a contacting face of another blocking element of the plurality of blocking elements, and to a pump having a corresponding blocking device.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 21, 2021
    Assignee: Watson Marlow GmbH
    Inventors: Achim Staedele, Eric Mayer
  • Patent number: 11125230
    Abstract: A scroll compressor includes fixed and movable scrolls defining a compression chamber, and a crankshaft. The movable scroll at least partially covers a discharge port formed in the fixed scroll to change a communication area that is a portion of a total area of the discharge port that contributes to communication with the compression chamber. First to third rotation angle positions become larger in order. As the crankshaft rotates from the first to second rotation angle position the communication area increases at a first rate. In the first rotation angle position the compression chamber and the discharge port start communicating with each other. The second rotation angle position is a preliminary discharge interval angle. As the crankshaft rotates from the second to third rotation angle position the communication area increases at a second rate. The second rate of increase is greater than the first rate of increase.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: September 21, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuo Mizushima, Yasuhiro Murakami, Ryouta Nakai, Masahiro Noro
  • Patent number: 11118583
    Abstract: The present invention makes a lap clearance between a fixed scroll and an turning scroll as small as possible to suppress leakage of compressed fluid from a compression chamber in a compression operation, thereby improving a compression efficiency. Provided is a scroll-type fluid machine characterized by comprising: a fixed scroll having a scroll lap portion; and an orbiting scroll that is provided to face the fixed scroll and that has a scroll lap portion turning so as to form a plurality of compression chambers in a clearance relative to the lap portion of the fixed scroll, wherein the lap portion of at least one of the fixed scroll and the turning scroll is provided with, in a predetermined region, a recessed portion on one lateral surface thereof and a protruding portion on the other lateral surface thereof.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: September 14, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Sho Watanabe, Susumu Sakamoto, Yoshio Kobayashi, Kiminori Iwano
  • Patent number: 11118585
    Abstract: The present disclosure is directed to a screw compressor system having a compressor housing with a pair of screw rotors rotatably supported within a compression chamber. Lubricant is injected into a compression chamber at a first volume ratio and at a second volume ratio greater than the first volume ratio to increase the sealing and lubrication between the screw rotors and rotor bores in the compressor housing as well as to increase heat transfer from a compressed working fluid in the compression chamber.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: September 14, 2021
    Assignee: INGERSOLL-RAND INDUSTRIAL U.S., INC.
    Inventors: Daniel R. Crum, Ryan Patrick Coleman, Nobin Cherian
  • Patent number: 11105330
    Abstract: A power transmitting component having a first shaft and a pump. The first shaft has a longitudinal bore, a pump mount and a feed conduit. The pump mount has a circumferentially extending surface, a drive portion and a channel that extends circumferentially about the first shaft. The channel is disposed along a longitudinal axis of the first shaft between the drive portion and the circumferentially extending surface. The feed conduit intersects and fluidly couples the longitudinal bore and the channel. The pump has a pump housing, a first rotor and a pump outlet. The pump housing is mounted about the circumferentially extending surface and is disposed circumferentially about the channel. The first rotor is coupled to the drive portion for rotation therewith. The pump outlet is coupled in fluid communication with the channel.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: August 31, 2021
    Assignee: BorgWarner Inc.
    Inventors: Christopher Sullivan, Pritish Khale, Larry A. Pritchard
  • Patent number: 11105332
    Abstract: A scroll compressor is provided, comprising: a compression mechanism comprising a non-orbiting scroll member and an orbiting scroll member, wherein the orbiting scroll member is axially displaceable between an engagement position and a disengagement position; a main bearing housing adapted to support the compression mechanism; a back pressure chamber formed between the orbiting scroll member and the main bearing housing, wherein the back pressure chamber is in communication with at least one of the compression chambers via a communication passage provided in the orbiting scroll member or the non-orbiting scroll member and is adapted to apply a back pressure to the orbiting scroll member to bias the orbiting scroll member toward the engagement position; and a first sealing means provided between the back pressure chamber and a suction zone of the compression mechanism and capable of maintaining sealing when the orbiting scroll member is axially displaced.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: August 31, 2021
    Assignee: Emerson Climate Technologies (Suzhou) Co., Ltd.
    Inventors: Youling Huang, Chun Yang, Dang Zeng
  • Patent number: 11098588
    Abstract: An engine includes a housing defining an annular bore and a piston assembly disposed within the annular bore. The engine also includes a rotary valve comprising a circular faceplate and a wall structure disposed at an outer periphery of the faceplate, a portion of the at least one rotary valve disposed within the annular bore, and a rotary drive mechanism connected to the rotary valve and configured to rotate the rotary valve between a first position to align an opening of the wall structure with the annular bore to allow the piston of the piston assembly to travel within the annular bore from a first location relative to the rotary valve to a second location relative to the rotary valve and a second position to define a chamber relative to the piston of the piston assembly at the second location.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: August 24, 2021
    Assignee: WB Development Company LLC
    Inventor: Walter T. Bonin
  • Patent number: 11092155
    Abstract: A scroll compressor comprising a fixed scroll (15); an orbiting scroll (16) supported in a manner allowing for orbiting motion; a discharge port through which a fluid compressed by the two scrolls (15, 16) is discharged; an end plate step portion (16E) provided on an end plate of the orbiting scroll (16) formed so that a height of the end plate is higher on a center portion side in the direction of a spiral wrap and lower on an outer end side; and a wrap step portion (15E) provided on a wall portion of the fixed scroll (15) that corresponds to the end plate step portion (16E) so that a height of the wall portion is lower on the center portion side of the spiral and higher on the outer end side; wherein the orbiting scroll (16) is treated for surface hardening and the fixed scroll (15) is not treated for surface hardening.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: August 17, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    Inventors: Hajime Sato, Makoto Takeuchi, Genta Yoshikawa, Kazuhide Watanabe, Katsuhiro Fujita, Takayuki Hagita, Takayuki Kuwahara
  • Patent number: 11092154
    Abstract: A scroll compressor includes a first scroll including a fixed wrap, a second scroll comprising an orbiting wrap, and a boss portion, a rotating shaft including an eccentric portion inserted into the boss portion of the second scroll to transfer a rotational force, a frame having a shaft hole, a first bearing provided between the shaft hole of the frame and an outer circumferential surface of the rotating shaft, and a second bearing provided between an inner circumferential surface of the boss portion and an outer circumferential surface of the eccentric portion of the rotating shaft, wherein a differential pressure space portion is formed between the first bearing and the second bearing in a radial direction, and has a radial cross section wider than a radial gap between an inner circumferential surface of the second bearing and the outer circumferential surface of the eccentric portion.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: August 17, 2021
    Assignee: LG Electronics Inc.
    Inventors: Yoonsung Choi, Jinho Kim, Jaeha Lee
  • Patent number: 11085442
    Abstract: A rotary drive includes a housing; a shaft rotatably mounted within the housing and rotatable about a drive axis; a passage internal the housing and extending circumferentially about the shaft; a stator vane within the passage; and a rotor vane within the passage. The stator and rotor vanes are movable between respective closed positions in which the stator and rotor vanes separate the passage into a circumferentially expanding chamber in fluid communication with an inlet in the housing and a circumferentially collapsing chamber in fluid communication with an outlet in the housing, and respective open positions in which the rotor vane is movable circumferentially past the stator vane during rotation of the shaft.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 10, 2021
    Assignee: Monashee Pumps Inc.
    Inventor: Braden Murphy
  • Patent number: 11085299
    Abstract: Various designs for hydraulic devices are disclosed including hydraulic devices that can include a rotor and a ring are disclosed. The rotor can be disposed for rotation about an axis and can have a plurality of plurality of vanes extending therefrom. The ring can be disposed at least partially around the rotor and the ring, and the rotor can be in communication with a port for ingress or egress of the hydraulic fluid to or from adjacent the rotor. The ring defines a cavity adjacent to and in communication with the port, the cavity allows the hydraulic fluid to be disposed adjacent at least one of the plurality of vanes when the at least one of the plurality of vanes is transiting the port.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: August 10, 2021
    Assignee: Mathers Hydraulics Technologies Pty Ltd
    Inventor: Norman Ian Mathers
  • Patent number: 11078833
    Abstract: A rotary internal combustion motor has a stator that houses a compartment defined by two opposite planar surfaces and by an annular surface with elliptical profile, inside which a rotor rotates, which includes a cylindrical drum surrounded by an annular chamber, which is divided into multiple portions by a regularly spaced set of radial blades that are slidingly housed in the cylindrical drum. The motor also has at least one pair of inlet openings, at least one pair of outlet openings, at least one pair of injectors, at least one pair of spark plugs, and at least one pair of pre-heating spark plugs.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: August 3, 2021
    Inventor: Angelo Bracalente
  • Patent number: 11078910
    Abstract: A pumping unit is provided, including a primary vacuum pump of a multistage dry type, including at least four pumping stages fitted in series; and a two-stage Roots vacuum pump, including a first pumping stage and a second pumping stage fitted in series, the second pumping stage being fitted in series with and upstream of a first pumping stage of the primary vacuum pump in a direction of flow of gases to be pumped, in which a ratio of a volume displacement of the first pumping stage of the two-stage Roots vacuum pump to a volume displacement of the second pumping stage of the two-stage Roots vacuum pump is less than six, and in which a ratio of a volume displacement of the second pumping stage of the two-stage Roots vacuum pump to a volume displacement of the first pumping stage of the primary vacuum pump is less than six.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: August 3, 2021
    Assignee: PFEIFFER VACUUM
    Inventor: Philippe D'Harboulle
  • Patent number: 11078834
    Abstract: A Revolving piston rotary annular cylinder rotary valve continuous flow and combustion expansible chamber devices, engine machine systems with an outer annular cylinder housing assembly having a central axis, having one or a plurality of balanced pistons attached to a rotor within of the outer housing whereby, a plurality of relatively air tight compartments are formed between the interior surface of the outer housing, the outer surface of the rotor and piston assembly with the volume of said compartment varying as a function of the rotative position of the inner cylinder and rotor piston assembly in relation to the rotary isolating valve connected at one end to the housing upstream before the intake port, another end of valve being in rotary contact with outer peripheral surface of piston and said rotor assembly having an inlet for receiving any fluid and an outlet for providing said fluid.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: August 3, 2021
    Inventor: Jesus Vazquez