Patents Examined by Kenneth Bomberg
  • Patent number: 11912252
    Abstract: In order to prevent rotation of a piston of a hydraulic unit of a hydraulic vehicle braking system, a sleeve is provided having axially parallel cylindrical pins constituting rotation prevention elements on its inner circumference, the rear ends of which elements are pressed into axially parallel holes in an inwardly projecting flange of the sleeve, and the front ends of which are inserted into axially parallel blind holes in a diameter step in a mouth of the cylindrical hole in a hydraulic block of the hydraulic unit. A method for assembling the hydraulic unit thus configured is also described.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: February 27, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Andreas Weh, Martin Hagspiel, Matthias Mayr, Stefan Kaserer
  • Patent number: 11913480
    Abstract: A system and method for detecting the functional state of a piloted or direct-operated isolation valve in a hydraulic circuit is presented. In some examples the hydraulic circuit is a steering circuit and the isolation valve provides selective isolation between a hydraulic actuator and one or more metering valves. In some examples, the isolation valve assembly is movable between a first position, in which fluid flow between the metering valve and the actuator is enabled, and a second position, in which fluid flow between the metering valve and the actuator is blocked. When the isolation valve assembly is moved to one of the first and second positions, an inlet port and a pressure sensing port of the isolation valve assembly are placed in fluid communication with each other. When the isolation valve assembly is moved to the other of the first or second position, a second inlet port and the pressure sensing port are placed in fluid communication.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: February 27, 2024
    Assignee: Danfoss A/S
    Inventor: Kenneth Marshall Befus
  • Patent number: 11905980
    Abstract: A power transfer unit includes a first hydraulic circuit, a second hydraulic circuit fluidly connected to the first hydraulic circuit, a pump and motor assembly fluidly connected between the first hydraulic circuit and the second hydraulic circuit, an isolation valve arranged along the first hydraulic circuit and fluidly connected to an inlet of the pump and motor assembly. The isolation valve is movable between a closed position and an open position to prevent and enable high-pressure fluid flow to the inlet, respectively. An unloader valve is arranged along the second hydraulic circuit and fluidly connected to an outlet of the pump and motor assembly, and an orifice is arranged along the second hydraulic circuit and fluidly connected to the unloader valve to reduce back pressure in the second hydraulic circuit.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: February 20, 2024
    Assignee: Parker-Hannifin Corporation
    Inventors: Steven A. Krane, Dean R. Pollee, Scott N. Johns, David A. Scranton, Bernard J. Strehlow
  • Patent number: 11903343
    Abstract: Hydraulic power savings for a rear module handler cylinder of a round module cotton harvester is possible by using a regenerative hydraulic arrangement for raising an empty handler and using gravity to lower the handler. A bale handler system for a cotton picker baler includes a handler for receiving a round module that is movable between upright and lowered positions and a handler cylinder operably connected to the handler. The handler cylinder system includes a regenerative valve. The regenerative valve is engaged when the handler moves to the upright position during regenerative handler raise mode of operation, the regenerative valve is not engaged when the handler moves to the lowered position during float handler lower mode of operation. While in the float handler lower mode of operation, the handler cylinder retracts and diverts an oil flow pressure from a base end to a rod end of the handler cylinder.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: February 20, 2024
    Assignee: DEERE & COMPANY
    Inventors: Steven D. Wallestad, Mark A. Cracraft, James T. Noonan
  • Patent number: 11905938
    Abstract: A piston hydraulic device comprises a cylinder block having a plurality of cylinder assemblies and is rotatable about a first rotation axis. Each cylinder assembly comprises a cylinder and a piston. A port plate has a first port and a second port that are angularly spaced relative to the first rotation axis. A plurality of first conduits connect respective cylinders alternately to the first port or the second port. At least one second conduit is connected to a fluid reservoir. At least one directional control valve is positioned in the first conduit and fluidly connects to the second conduit. The at least one directional control valve connects the cylinder to the port plate in a first position and to the fluid reservoir in a second position. A controller is operatively associated with the directional control valve for switching between the first and the second positions.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: February 20, 2024
    Assignee: DANA MOTION SYSTEMS ITALIA S.R.L.
    Inventors: Alessandro Sassi, Fabio Natali, Federica Franzoni
  • Patent number: 11898581
    Abstract: A pneumatic stepper motor includes a housing, said housing accommodating at least part of: a rack or geared axle comprising a plurality of gear elements; and two pistons, each comprising at least two teeth, said pistons being arranged to cooperate with said rack or geared axle. The racks may either be straight or curved. The pistons are preferably double-acting pistons. A device includes at least one, and preferably a plurality of, such pneumatic stepper motor(s). The device may in particular be an MRI-compatible robotic system, more in particular for example an MRI-guided breast biopsy device.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: February 13, 2024
    Assignee: Machnet Medical Robotics B.V.
    Inventors: Vincent Groenhuis, Francoise Jeanette Siepel, Stefano Stramigioli
  • Patent number: 11898547
    Abstract: A pump contains a sealed chamber, a movable wall for changing a volume of the sealed chamber, and a vibration actuator which can be electromagnetically driven for displacing the movable wall to discharge fluid in the sealed chamber to an outside of the sealed chamber. Further, three axes perpendicular to each other are respectively defined as an X axis, a Y axis, and a Z axis. When a direction along the X axis is defined as an X axis direction, a direction along the Y axis is defined as a Y axis direction, and a direction along the Z axis direction is defined as a Z axis direction, an outer shape of the pump is a concave shape in a planar view from the Y axis direction.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: February 13, 2024
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Yuta Yoshii, Chikara Sekiguchi, Shigenori Inamoto, Yuki Takahashi, Daisuke Kodama, Kenta Ueda, Daisuke Kurita
  • Patent number: 11889795
    Abstract: A hydraulic system and method for service mode on a work machine is operatively coupled to a cutting element for felling trees. The hydraulic system comprises a hydraulic motor, a hydraulic pump, a feed actuator, a feed line, a directional control valve, a voltage battery, and a controller. The hydraulic motor is coupled to the hydraulic circuit for operating the cutting element. The hydraulic pump is operable to supply pressurized fluid to the hydraulic motor. The feed actuator extends or retracts the cutting element. The feed line is coupled to the hydraulic actuator. The directional control valve is located on the feed line of the feed actuator. The controller receives a cutting element service mode signal, moves the directional control valve to pressure the feed line for extending the cutting element where the valve is powered by the voltage battery upon receiving the cutting element service mode signal.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: February 6, 2024
    Assignee: Deere & Company
    Inventor: Sanket Pawar
  • Patent number: 11892014
    Abstract: A hydraulic machine includes: a power source; an assist motor including comprising an inlet port and an outlet port and assisting a torque of the power source; a tank; a collection line which is connected to the inlet port and allows a fluid to flow to the inlet port; a first return line which is connected to the tank and allows the fluid to flow to the tank; a self-priming line which connects the first return line to the inlet port and allows the fluid to flow from the first return line to the inlet port; and an anti-cavitation line which connects the outlet port to the self-priming line and allows the fluid to flow from the outlet port to the self-priming line.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: February 6, 2024
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Taerang Jung, Sangmin Gwon, Sangki Bae
  • Patent number: 11885317
    Abstract: A pump control assembly for controlling a variable displacement hydraulic pump includes a spool mounted within a valve block. The spool is configured to move between a first and a second position within the valve block so as to selectively control the displacement of the attached pump. The pump control assembly further includes first and second chambers that each apply a force to opposite ends of the spool. The first chamber is positioned at a first end of the spool in fluid communication with a pump output port. The second chamber is positioned at a second end of the spool and in fluid communication with a hydraulic tank port and a proportional pressure reducing valve. The second chamber also includes a piston and first and second springs positioned on either side of the piston.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 30, 2024
    Assignee: DANFOSS A/S
    Inventors: Anil Balasaheb Kharpas, Avinash Dadaso Patil, Sanjay Dhondappa Mali, Amit Ranjit Panchal, Robert Leslie Isaacs
  • Patent number: 11873848
    Abstract: A hydraulic control block for controlling a supply of pressurizing medium to an electrohydraulic or servo hydraulic axle includes a plurality of internally situated hydraulic interfaces configured to fluidically connect at least one of a source of pressurizing medium and a pressurizing medium sink of the axle to any hydraulic cylinder selected from a group of hydraulic cylinders of different structural forms, wherein the internally situated hydraulic interfaces are configured to selectively supply pressurizing medium to the selected hydraulic cylinder. The control block further includes an insert part configured as a function of the structural form of the selected hydraulic cylinder such that each of the plurality of internally situated hydraulic interfaces is one of tapped and blocked for the purpose of the fluidic connection.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: January 16, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Markus Junker, Manuel Rumpel
  • Patent number: 11873847
    Abstract: Provided is a cylinder device capable of preventing rotation unevenness while reducing power consumption and achieving compactification in particular. The present invention is to provide a cylinder device including a cylinder body and a shaft member supported in the cylinder body, the cylinder body is provided with a rotation mechanism portion including a rotation chamber and configured to rotate the shaft member based on an action of a fluid, and rotation ports communicating with the rotation chamber are provided at a front end and a rear end of the rotation mechanism portion. Thus, it is possible to prevent rotation unevenness while reducing power consumption and achieving compactification.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: January 16, 2024
    Assignee: FUJIKURA COMPOSITES INC.
    Inventors: Osamu Kanazawa, Kenzo Miyamori
  • Patent number: 11867206
    Abstract: A method of removing hydraulic fluid from an aircraft hydraulic system is disclosed including a hydraulically actuated mechanism that is actuated by an electrohydraulic servo valve, a hydraulic fluid port through which hydraulic fluid can escape, and a hydraulic fuse with a closed state and an open state between the electrohydraulic servo valve and the hydraulic fluid port. The hydraulic fluid port is opened, and then the activation of the electrohydraulic servo valve is controlled to force hydraulic fluid to escape from the hydraulic system via the hydraulic fluid port, the control being so that the hydraulic fuse does not enter and remain in the closed state.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: January 9, 2024
    Assignee: AIRBUS OPERATIONS LIMITED
    Inventors: Ashley Bidmead, Alexander Hayes
  • Patent number: 11867286
    Abstract: A vehicle includes a heat exchanger, a transmission, and a controller. The transmission is configured to transfer power within a powertrain. The transmission has a primary fluid circuit, a secondary fluid circuit, and a valve. The secondary fluid circuit is configured to divert the fluid from the primary fluid circuit and deliver the fluid to the heat exchanger. The valve is configured to control diverting fluid from the primary fluid circuit to the secondary fluid circuit. The controller is programmed to, in response to a temperature of the fluid being outside of a desired range, open the valve to direct the fluid toward the heat exchanger via the secondary fluid circuit. The controller is further programmed to, in response to the temperature of the fluid being within the desired range, close the valve to isolate the fluid from the secondary fluid circuit and the heat exchanger.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: January 9, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Raymond Theodore Gage, Derek Kinch, Sylvia Chen
  • Patent number: 11867064
    Abstract: A seal assembly for an aircraft engine includes a first seal having an upstream end exposed to a first pressure area, and a downstream end exposed to a second pressure area, the first seal at least partially defining an intermediate pressure area and a chamber being fluidly connected to the second pressure area and to the intermediate pressure area through passages defined in the first seal, the chamber allowing for a mixing of a first portion of a stream of air with air from the second pressure area, and a second seal connected to the first seal, the second seal biasing the first portion of the stream of air toward the passages, and allowing a second portion of the stream of air from flowing therethrough toward the second pressure area. A method of flowing air through an aircraft seal assembly is also described.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: January 9, 2024
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Ivan Sidorovich Paradiso, Pouya Mottaghian
  • Patent number: 11849673
    Abstract: An agricultural system that includes a cylinder and a rod that moves axially in and out of the cylinder to raise and lower a header. A cylinder lock system controls movement of the rod. The cylinder lock system includes a cap-end fixture that couples to the cylinder and receives the rod. A rod-end fixture couples to an end of the rod. The system includes a lock piston. The lock piston includes a protrusion. The lock piston rotates about the rod and selectively couples the protrusion to the cap-end fixture to lock and unlock the rod-end fixture to the cap-end fixture.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: December 26, 2023
    Assignee: CNH Industrial America LLC
    Inventors: Cory D. Hunt, Joshua Harmon, Herbert M. Farley
  • Patent number: 11852171
    Abstract: There is provided a control module for a hydraulic system. The module comprises a tank and a plurality of valves. The tank is configured to store hydraulic fluid and is substantially cylindrical. The plurality of valves fluidly connect with the tank and are configured to control distribution of hydraulic fluid from the tank to one or more components of the system. The plurality of valves are spaced around a circumference of the tank. One or more passages fluidly connect the tank with at least one of the plurality of valves and/or a first of the plurality of valves with a second of the plurality of valves.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: December 26, 2023
    Assignee: MICROTECNICA S.R.L.
    Inventors: Giacomo Mezzino, Gianfranco Salvatoriello
  • Patent number: 11850773
    Abstract: A piston for a heavy duty diesel engine including a composite layer forming at least a portion of a combustion surface is provided. The composite layer has a thickness greater than 500 microns and includes a mixture of components typically used to form brake pads, such as a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive. According to one example, the thermoset resin is a phenolic resin, the insulating component is a ceramic, the strengthening fibers are graphite, and the impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers. The composite layer also has a thermal conductivity of 0.8 to 5 W/m·K. The body portion of the piston can include an undercut scroll thread to improve mechanical locking of the composite layer. The piston can also include a ceramic insert between the body portion and the composite layer.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: December 26, 2023
    Assignee: Tenneco Inc.
    Inventors: Warran Boyd Lineton, Ross Allen Evers, Greg Salenbien
  • Patent number: 11852017
    Abstract: The invention relates to a modular construction system for a piston machine (100), comprising at least two separate housing parts capable of being joined together into a housing (1) of the piston machine (100), a piston (15) which is configured as a swivel element, is pivotable and is able to be arranged in the housing (1), and a housing cover (7) for covering the housing (1). The piston machine (100) is in particular configured as a modular construction system, the components of which are formed by multiple segments and joined together in a horizontal and a vertical direction in each case. The invention further relates to a piston machine (100) produced using the modular construction system and to a method for producing a piston machine (100).
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 26, 2023
    Assignee: RAPSON GmbH
    Inventor: Manfred Max Rapp
  • Patent number: 11851163
    Abstract: Hydraulic actuator systems of aircraft are described. The hydraulic actuator systems include a hydraulic actuator having a housing and piston therein. The piston includes a piston head separating the housing into a retract cavity and an extend cavity. An actuator controller is hydraulically coupled to the retract cavity by a first hydraulic line and hydraulically coupled to the extend cavity by a second hydraulic line and configured to control a hydraulic pressure within each of the retract cavity and the extend cavity to control actuation of the hydraulic actuator. A position-lock controller is arranged along at least one of the first hydraulic line and the second hydraulic line, the position-lock controller is configured to hydraulically decouple the actuator controller from at least one of the retract cavity and the extend cavity.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: December 26, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Frank Perrelli, Morgan O'Rorke