Patents Examined by Dustin T Nguyen
  • Patent number: 10550868
    Abstract: A hydraulic system for a working machine is a load sensing system and includes a hydraulic actuator for movement of an implement and a control valve having an inlet valve and an outlet valve for controlling the flow of hydraulic fluid from a pump to the hydraulic actuator and for draining hydraulic fluid from the hydraulic actuator, respectively. The hydraulic system also includes an arrangement for determining the load on the hydraulic actuator. The hydraulic system further includes a valve for disconnecting the flow of hydraulic fluid from the pump to the hydraulic actuator, while allowing another flow of hydraulic fluid to the hydraulic actuator, provided that the determined load on the hydraulic actuator exceeds a threshold value.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: February 4, 2020
    Inventor: Bo Vigholm
  • Patent number: 10525955
    Abstract: A check valve of this negative pressure-type booster device is provided with: a cylindrical section that is integrally formed with a shell disposed on one side, communicates with a connection pipe, and is formed in a cylindrical shape protruding toward the inside of a housing; and a valve body section that is disposed inside the cylindrical section, and is axially fitted, within the cylindrical section, to the cylindrical section such that air is permitted to flow from a negative pressure chamber to the connection pipe while the air is prohibited from flowing from the connection pipe to the negative pressure chamber.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 7, 2020
    Assignee: ADVICS CO., LTD.
    Inventors: Yoji Inoue, Nan Li
  • Patent number: 10519923
    Abstract: Systems store energy mechanically at a first time and extract the energy at a later time. When excess electricity from renewable sources or during off-peak periods is available, a pump directs a working liquid (L) to pressurize a gas (G) that is confined within a pressure vessel. When electricity from renewable sources is not available or during periods of peak demand or pricing, the pressurized gas (G) directs the working liquid (L) through a hydropower turbine. The turbine drives a generator through a mechanical coupling to provide electricity for powering a load. In addition, the system can leverage (take) any waste heat as the input to boost the efficiency of the system. The described systems function at ground level and are modular and scalable in capacity.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: December 31, 2019
    Assignee: UT-Battelle, LLC
    Inventors: Ayyoub Mehdizadeh Momen, Kyle J. Gluesenkamp, Omar A. Abdelaziz, Edward A. Vineyard, Ahmed Abu-Heiba, Adewale O. Odukomaiya
  • Patent number: 10502207
    Abstract: A sealing system for a high pressure pump operable above 15,000 psi includes a first engagement face formed as part of the vessel and defining an opening into the vessel bore, the first engagement face having a concave cross-section. A seal member is at least partially received within the bore and defines a second engagement face, the second engagement face having a convex cross-section. A retaining member is coupled to the seal member and is operable to move the seal member from an initial contact position with the vessel to a sealing contact position, wherein the first engagement face and the second engagement face define a first contact angle with respect to the axis in the initial contact position and a second contact angle that is greater than the first contact angle in the sealing position.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: December 10, 2019
    Assignee: KMT Waterjet Systems Inc.
    Inventor: Eric D. Roll
  • Patent number: 10480499
    Abstract: A crankcase assembly for a reciprocating machine is provided in which a crankcase having at least one cylinder with a wet cylinder liner arranged therein. A cylinder head for charging and discharging pressurized gas is mounted on the crankcase and a cylinder head gasket for preventing leakage of pressurized gas out of the cylinder is arranged between the crankcase and the cylinder head and is running circumferentially spaced from the inner wall of the cylinder liner. A circumferential coolant channel is formed between the inner crankcase wall and an outer wall of the cylinder liner, wherein a lower sealing means is arranged between the inner crankcase wall and the cylinder liner on the crankshaft side of the coolant channel for preventing leakage of coolant fluid. An upper sealing means is arranged between the inner crankcase wall and the cylinder liner on the cylinder head side of the coolant channel for preventing leakage of coolant fluid.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: November 19, 2019
    Assignees: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH, Bendix Commercial Vehicle Systems LLC
    Inventors: Gilles Hebrard, Jean-Baptiste Marescot, Joerg Mellar, Thomas Weinhold, Thomas Franz, Jeffrey Geither, Edward Hoban, Justin Huffman, Nicholas Petek
  • Patent number: 10442417
    Abstract: One embodiment provides a hydraulic pressure generation apparatus. In the hydraulic pressure generation apparatus, a motor attached to a base body. The base body includes: a first cylinder hole having a closed bottom in which a first piston is inserted to thereby form a master cylinder; and a second cylinder hole having a closed bottom in which a second piston is inserted to thereby form a slave cylinder. The first cylinder hole and the second cylinder hole have respective openings in a surface of the base body located on one side thereof. Axial lines of the first cylinder hole, the second cylinder hole and an output shaft of the motor are arranged approximately parallel with each other.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 15, 2019
    Inventors: Yoshiteru Matsunaga, Kouji Sakai, Nobuyuki Kobayashi
  • Patent number: 10422361
    Abstract: An agricultural, construction, or industrial vehicle or machine has a driveline including an engine, a power-shuttle transmission connected to the engine, and at least one drive axle driven by an output shaft of the power-shuttle transmission. The power-shuttle transmission has an input shaft, a forward shuttle gear train, and a reverse shuttle gear train. Each shuttle gear train has a shuttle clutch selectively coupling it with the input shaft. The forward shuttle gear train drives the output shaft when the forward shuttle clutch is engaged, and the reverse shuttle gear train drives the output shaft when the reverse shuttle clutch is engaged. The at least one drive axle has at least one service brake. A hydraulic energy recapture system is coupled to the output shaft of the power-shuttle transmission and works in cooperation with the shuttle clutches and with the service brakes.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 24, 2019
    Assignee: CNH Industrial America LLC
    Inventors: Haibo Guo, Cecil A. Weeramantry
  • Patent number: 10415608
    Abstract: A hydraulic cylinder cover is disclosed. The hydraulic cylinder cover may have a body having a first end and a second end. The hydraulic cylinder cover may also have a flange positioned at the first end. In addition, the hydraulic cylinder cover may have a cover eye provided on the flange. The cover eye may be configured to connect to a piston rod eye of a hydraulic cylinder.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: September 17, 2019
    Assignee: Caterpillar Work Tools B.V.
    Inventor: Johannes Lambert Leonardus Van Gemert
  • Patent number: 10408319
    Abstract: A MTD unit according to a present disclosure includes a bearing member that has an inner ring, a plurality of rolling elements and an outer ring and is capable of bearing a radial load and a unidirectional axial load, a retainer that has a retaining part retaining the rolling elements such that the rolling elements are rotatable around their own axes and rotates around an axis of the inner ring in accordance with an orbital motion of the rolling elements around the inner ring, and a case that accommodates the bearing member and the retainer, wherein the case has a piston that is axially movable so as to push a movable body, which is either the inner ring or the outer ring, in a first axial direction, an oil chamber provided on an opposite side of the piston from the movable body, and an oil passage for guiding pressurized oil to the oil chamber.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: September 10, 2019
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Hiroshi Sugimoto, Hajimu Imanaka, Hiroaki Hashima
  • Patent number: 10407874
    Abstract: A control device for suppressing engine load fluctuation according to main pump circuit conditions, wherein an assist torque calculation task includes a target engine torque calculation task separating smooth torque components from main pump load torque and setting a minimum value of either smooth torque component or engine setting torque as target engine torque, and a subtractor calculating target assist torque based on a difference between the main pump load torque and the target engine torque, the assist torque calculation task controlling a capacity of an assist pump based on the target assist torque and controlling switching between an assist mode and a charge mode.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: September 10, 2019
    Assignee: Caterpillar SARL
    Inventors: Shigeo Kajita, Kouji Kishida, Yoshihiko Hata, Nobuaki Matoba
  • Patent number: 10400798
    Abstract: The invention relates to a hydraulic unit for a mobile hydraulic tool with a hydraulic piston hydraulically adjustable between a starting position and an end position and a piston rod that is connected to the hydraulic piston and has a tool holder for a tool insert. In order to provide a hydraulic unit for a mobile hydraulic tool that enables the use of tool inserts with different load bearing capacity, it is provided that a pressure control valve connecting the pressure chamber to a cylinder chamber and limiting the pressure acting on a hydraulic piston on the pressure chamber side is arranged on the hydraulic piston and is connected to the piston rod such that a response pressure of the pressure control valve can be adjusted by the piston rod.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: September 3, 2019
    Assignee: TKR Spezialwerkzeuge GmbH
    Inventor: Karl Buchholz
  • Patent number: 10378630
    Abstract: A hydrostatic transmission assembly includes a first housing member and a housing cap sealed to the first housing member to form a sump wherein a pump and motor are rotatably disposed. A pump mount is located in the sump and engaged to the housing cap. The housing cap also includes a motor mount for an axial piston motor, and hydraulic fluid passages for connecting the pump to the motor. A pocket is located in the housing cap to rotationally support a swash plate for the pump.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: August 13, 2019
    Assignee: Hydro-Gear Limited Partnership
    Inventor: Michael L. Bennett
  • Patent number: 10364885
    Abstract: Method for the load-dependent regulation of a hydrostatic drive (1), with a closed hydraulic fluid circuit comprising a first hydraulic motor (5) and, parallel to this, a second hydraulic motor (6), whereby both hydraulic motors (5 and 6) are capable of being powered by a hydraulic pump (3) via a high-pressure line (7) and a low-pressure line (8) and are mechanically coupled to each other via a transmission (70). The displacement of the first hydraulic motor (5) can be adjusted proportionally to an electrical signal of an electronic control system (50) by means of an electro-proportional control valve (10) and the displacement of the second hydraulic motor (6) can be adjusted by means of a pressure-proportional control valve (20) which is hydraulically connected to the high-pressure line (7) via a control pressure line (21). The pressure-proportional control valve can be activated by means of a control pressure which is dependent on the high pressure.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: July 30, 2019
    Assignee: Danfoss Power Solutions GmbH & Co. OHG
    Inventor: Rolf Rathke
  • Patent number: 10358216
    Abstract: An aircraft store ejector systems and subsystems thereof. Embodiments can include a two-reservoir re-pressurization system wherein a remote reservoir is used to maintain desired pressure in a local ejector reservoir. The system can include a release valve having a vent valve and valve piston. The release valve can control release of pressurized gas to a pitch control valve. The pitch control valve can be configured to distribute the pressurized gas between two or more ejector piston assemblies. One or more of the ejector piston assemblies can include multiple concentric piston stages and piston chambers, the piston chambers configured to contain a volume of gas. The ejector piston assemblies can be configured to compress the volume of gas within the piston chambers as the piston stages are extended out from the aircraft. Such compression can provide a return force to the piston stages.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: July 23, 2019
    Inventors: Lee Allen Tobias, Sohrab John Talebian, Robert Ronald Evans
  • 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
  • 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
    Inventors: Koji Ito, Atsushi Fukui
  • 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
    Inventors: Yuji Fukuda, Kazuyoshi Arii, Ryohei Sumiyoshi, Keigo Honda
  • 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
    Inventors: Edward J. Billings, John G. Dorrough, Carl Eric Fonville
  • 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
  • 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
    Inventors: Robert M. Murphy, Kelly T. Jones, Robert E. Fisher, Mark J. Gardner