Patents Examined by Dustin T Nguyen
  • Hydraulic system of work machine
    Patent number: 10352335
    Abstract: A hydraulic system of a work machine includes a first hydraulic actuator, a first control valve, a first oil passage, a second hydraulic actuator, a second control valve, a second oil passage, and a bypass oil passage. The first control valve is connected to the first hydraulic actuator to control the first hydraulic actuator. The first oil passage is connected to the first control valve to supply hydraulic oil to the first control valve. The second control valve connected to the second hydraulic actuator to control the second hydraulic actuator. The second oil passage connects the second control valve and the first hydraulic actuator via the first control valve. Hydraulic oil returning from the first hydraulic actuator to the first control valve is to be supplied to the second control valve through the second oil passage. The bypass oil passage connects the first oil passage and the second oil passage.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 16, 2019
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Kazuyoshi Arii, Ryohei Sumiyoshi, Keigo Honda
  • Rotary actuator
    Patent number: 10352169
    Abstract: A rotary actuator includes an output shaft, a housing, a piston, and a friction reducer. The housing includes an arcuate bore that extends around the output shaft. The piston is coupled to the output shaft and moved in the arcuate bore. Pressure fluid acts to move the piston. The friction reducer is configured to reduce friction between a peripheral surface of the piston and an inner circumferential surface of the housing forming the arcuate bore.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 16, 2019
    Assignee: NABTESCO CORPORATION
    Inventors: Koji Ito, Atsushi Fukui
  • Light composite piston
    Patent number: 10352443
    Abstract: A system, in certain embodiments, includes a composite piston. The composite piston comprises a piston body made of a composite material, wherein the composite material comprises a reinforcing material distributed in a matrix material.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: July 16, 2019
    Assignee: GE Oil & Gas Compression Systems, LLC
    Inventors: Omar M. Kabir, John C. Bartos, Kent Pearl
  • Multi-piece sealing assembly
    Patent number: 10344842
    Abstract: A multi-piece seal assembly for use in a torque converter of a motor vehicle includes an inner ring, an outer ring, and an elastomer compensation layer disposed between the inner ring and the outer ring. The inner and outer rings are made from a composite wear material. Tabs on the inner and outer ring interlock with matching slots on the elastomer compensation layer.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 9, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward J. Billings, John G. Dorrough, Carl Eric Fonville
  • Electronic latching circuit
    Patent number: 10321621
    Abstract: A hydraulic circuit with electronic latching through valve assemblies to allow full control of ground engaging tools including raising, lowering, and providing regulated active down force pressure via a work vehicle valves with manual input while allowing a continuous pressure source to be used in parallel. Pressure transducers and electrically controlled valves along with an electric control circuit allow automatic switching between manual control and automatic control of the ground engaging tools.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 18, 2019
    Assignee: DEERE & COMPANY
    Inventor: Aaron L. Barfels
  • Methods and apparatus to control movement of a component
    Patent number: 10309431
    Abstract: Methods and apparatus to control movement of a component are disclosed herein. An example apparatus includes a housing defining a bore and a piston disposed inside the bore. The piston is to be coupled to a movable component disposed outside of the bore. The example apparatus further includes a fluid flowline in fluid communication with a first chamber of the bore and a second chamber of the bore. The first chamber is on a first side of the piston, and the second chamber on a second side of the piston. The example apparatus also includes a valve to control fluid flow through the fluid flowline. The valve is to be in a first state to enable the piston to dampen movement of the component, and the valve is to be in a second state to enable the piston to hold the component substantially stationary.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: June 4, 2019
    Assignee: THE BOEING COMPANY
    Inventors: Robert M. Murphy, Kelly T. Jones, Robert E. Fisher, Mark J. Gardner
  • Automatic hydropneumatic actuation device
    Patent number: 10311983
    Abstract: A control assembly for a nuclear reactor having a pump includes a duct having an inner volume and defining a coolant flow path, a plug fixed to the duct, a rod disposed within the inner volume and having a rod end that is configured to engage a neutron modifying material, a first piston disposed within the inner volume, slidably coupled to the duct, and coupled to the rod, and a biasing member coupled to the rod and the first piston. The biasing member is positioned to apply a biasing force that repositions the first piston, the rod, and the neutron modifying material in response to a loss of pump flow without scram condition.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: June 4, 2019
    Assignee: TerraPower, LLC
    Inventors: Jesse R. Cheatham, III, Robert A. Corbin, Pavel Hejzlar, Christopher J. Johns, Jon D. McWhirter, Jason Brian Meng, P. Harley Park, Robert C. Petroski
  • Hydraulically actuated continuously variable transmission for a vehicular drive line provided with an internal combustion engine
    Patent number: 10274082
    Abstract: A hydraulically actuated continuously variable transmission (1) is provided with a hydraulic system (TH) for the control of the torque transmissible by the transmission (1) as well as the speed ratio provided by the transmission (1). The hydraulic system (TH) is provided with a mechanically driven hydraulic pump (PM) and with an electrically driven hydraulic pump (PE) for generating a pressurised flow of hydraulic medium for the actuation of the transmission. The electrically driven pump (PE) can be switched either downstream of or in parallel with the mechanically driven pump (PM).
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: April 30, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventor: Francis Maria Antonius Van Der Sluis
  • Method, device, and system for controlling hydraulic pump of construction machine
    Patent number: 10215197
    Abstract: The present disclosure relates to a method, a device, and a system for controlling a hydraulic pump of a construction machine, the system comprising: an engine; an engine control unit configured to control the engine by using engine limit torque information and current engine torque information of the engine; a hydraulic pump operated by power supplied from the engine; at least one actuator driven by a hydraulic pressure discharged from the hydraulic pump; and a hydraulic pump control device configured to control a limited swash plate angle of the hydraulic pump by using a torque of the hydraulic pump and the engine limit torque information received from the engine control unit.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 26, 2019
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Dong Mok Kim, Nag In Kim, Yong Tak Hyun, Duk Sang Kim, Byung Il Kang, Min Seok Ko, Jung Ho Kim, Kyung Min Park, Lee Hyoung Cho
  • Brake control unit
    Patent number: 10196051
    Abstract: A brake control unit includes a primary piston and a secondary piston that respectively define a primary chamber and a secondary chamber. The primary piston carries an intermediate piston that slides in the secondary piston. A primary insulating seal is disposed between the pistons such that the primary insulating section of the primary insulating seal only depends on the equivalent section connecting the force applied at the inlet and the secondary pressure. The ratio of the hydraulic sections is configured to be modified without having to intervene on the primary and secondary pressure seals for the main piston and the secondary seal by way of modifying the section of the plunger piston and that of the seal thereof.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: February 5, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Chris Anderson, Christian Schalkwijk, Raynald Sprocq, Bastien Cagnac
  • Compressor swash plate and compressor equipped with same
    Patent number: 10184463
    Abstract: A compressor swash plate includes a base member having a flat plate shape, and a coating layer formed on a surface of the base member and having projections formed in a linear shape, in which the following inequalities are satisfied when a plane part formed on a prism is pressed against the coating layer with a pressure of 30 MPa: 0.01?B?0.06 and 10?S?40, where B indicates widths (mm) of surfaces of the projections in contact with the plane part, and S indicates a percentage (%) of a total sum of an area Si of the contact surfaces (a gross area of the surfaces of the projections in contact with the plane part) relative to a reference area (an area of a part of the coating layer against which the plane part is pressed).
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: January 22, 2019
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Hideki Niimi, Masanori Akizuki, Hiroshi Kanemitsu
  • Shovel and method of controlling shovel
    Patent number: 10167880
    Abstract: A shovel includes a lower-part traveling body, an upper-part turning body mounted on the lower-part traveling body, a hydraulic actuator mounted on the upper-part turning body, an internal combustion engine disposed in the upper-part turning body, provided with a supercharger, and configured to be controlled at a constant rotational speed, a hydraulic pump connected to the internal combustion engine, and a controller configured to control horsepower absorbed by the hydraulic pump. The controller is configured to increase a load on the internal combustion engine with the hydraulic pump before a load on the hydraulic actuator increases.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: January 1, 2019
    Assignee: SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.
    Inventor: Kenji Morita
  • Modular hydrostatic transmission
    Patent number: 10167937
    Abstract: A center section/motor sub-assembly for use in a hydrostatic transmission includes a center section having a pump running face for interfacing with a pump, and a motor running face for interfacing with a motor. The center section and the motor are configured for the hydraulic separating forces of the motor to be reacted only into the center section. The center section has two internal passages between pump kidney ports and motor kidney port, and the motor kidney ports are raised in elevation relative to the pump kidney ports. The internal passages run parallel to each other as they rise in elevation. A hydrostatic transmission includes the sub-assembly enclosed by a housing, in combination with a pump and output shaft assembly. For installation, the output shaft assembly is configured as a separate component from the sub-assembly of the center section and the motor.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: January 1, 2019
    Assignee: Parker-Hannifin Corporation
    Inventors: Michael Tholan Crosby, Matthew Herman Simon, David Mark Heathcoat, Jason Scot Richardson, John Matthew Rector, Raymond E. Collett, Somer Renee Malone
  • Floatable bellows container assembly
    Patent number: 10156229
    Abstract: A floatable bellows container assembly is provided. The floatable bellows container assembly comprises a small access opening and is composed of a large diameter bellows container and a small diameter bellows container. The floatable bellows container assembly is characterized in that: (1) the floatable bellows container assembly is expanded by weight of water flowing into the floatable bellows container assembly or its floatability no matter that the access opening is located in an upper position or a lower position; (2) if the access opening is located at the lower position, the floatable bellows container assembly is collapsed along with draining of the water. This invention is directed to an application of Pascal's law and can be used in a power generation system driven by universal gravitation.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: December 18, 2018
    Inventor: Yuh Huei Shyu
  • Compressor and crankshaft-connecting rod assembly
    Patent number: 10132301
    Abstract: A compressor may include a shell, a crankshaft, a piston and a connecting rod. The shell may define a cylinder. The crankshaft is supported for rotation relative to the shell. The piston reciprocates within the cylinder in response to rotation of the crankshaft. The piston and the cylinder define a compression chamber therebetween. The connecting rod includes a first bushing rotatably coupled to the piston and a second bushing rotatably coupled to the crankshaft. The second bushing may include a driving surface contacting the crankshaft and having a recess formed therein. The recess receives an insert.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: November 20, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roxana E. L. Ruxanda, Steve Korte, James Leroy Cole, Steven James Baker
  • Magnetic failsafe piston retention assembly, and related components, systems, and methods
    Patent number: 10100853
    Abstract: A failsafe piston retention assembly, and related components, systems, and methods are disclosed. A failsafe piston retention assembly comprises a head comprising a head body having a first surface. The assembly also includes a piston having second surface, the piston slidably coupled with respect to the head. The piston has a retracted configuration and an unretracted configuration. In the retracted configuration, the second surface is fixed with respect to the first surface by a magnetic force. One advantage of this arrangement is that the piston is retained in its retracted configuration in the event of an operational failure of the piston mechanism. For example, for a hydraulically controlled piston, the magnetic force retains the piston in a retracted configuration even in the event of a loss of hydraulic pressure.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: October 16, 2018
    Assignee: Lockheed Martin Corporation
    Inventors: Daniel Andrew Broderick, Stephen Firkser
  • Rotary compressor/pump
    Patent number: 10077772
    Abstract: A rotary compressor or pump has a cam with a plurality of lobes mechanically engaging a plurality of pistons. The lobes urge the pistons from an open to a closed position within a piston void, the closure of the piston into the piston void creating compression or pressure of a material. Each piston is linked to another piston, and as one piston is closed by the cam, the other piston is opened by a linkage.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: September 18, 2018
    Inventor: Jon Trip
  • Hydrostatic traction drive in closed hydraulic circuit and method for controlling the hydrostatic traction drive
    Patent number: 10071719
    Abstract: A hydrostatic traction drive in a closed hydraulic circuit includes two hydraulic machines in the closed hydraulic circuit and a control unit configured to control a braking torque of the traction drive. A method for controlling the hydrostatic traction drive includes controlling the braking torque for the hydrostatic traction drive.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: September 11, 2018
    Assignee: Robert Bosch GmbH
    Inventor: Martin Behm
  • Master cylinder
    Patent number: 10053076
    Abstract: A piston seal includes an annular base portion, an inner circumferential lip portion protruding from an inner circumferential side of the base portion to come in sliding contact with an outer circumferential surface of the piston, an outer circumferential lip portion protruding from an outer circumferential side of the base portion to come in contact with the circumferential groove of the cylinder main body, and an intermediate protrusion portion protruding from between the inner circumferential lip portion and the outer circumferential lip portion of the base portion further than the outer circumferential lip portion. A connecting portion is formed to extend in an axial direction of the piston seal and is configured to connect the inner circumferential lip portion and the intermediate protrusion portion is formed between the inner circumferential lip portion and the intermediate protrusion portion.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 21, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Seiko Tanabe, Shinya Kasai
  • Determining null bias of a hydraulic valve of a robot
    Patent number: 10052768
    Abstract: An example method includes identifying an operating state at which a velocity of a hydraulic actuator configured to operate a movable member of a robot is less than a threshold velocity and an actuator force is less than a threshold force, determining a valve command that corresponds to the operating state, such that the valve command is provided to a valve configured to control flow to and from the hydraulic actuator, and the valve includes a spool movable within a body of the valve, and the valve command causes the spool to move within the body of the valve to a position that induces the operating state, and determining a null bias signal based on the valve command.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 21, 2018
    Assignee: Boston Dynamics, Inc.
    Inventors: Michael Scott Rose, Zachary John Jackowski