Patents Assigned to Bosch Rexroth
  • Patent number: 11990819
    Abstract: An electric and hydraulic machine includes a housing defining a motor chamber and a pump chamber, a motor comprising a rotor and a stator positioned within the motor chamber, and a pump comprising a pumping element positioned within the pump chamber, the pumping element movable by the motor to displace fluid in the pump chamber. The pump chamber includes a low-pressure chamber and a high-pressure chamber, a unit inlet defined by the housing and in communication with the low-pressure chamber, and a unit outlet defined by the housing and in communication with the high-pressure chamber. The pump chamber is positioned radially inward of the motor chamber such that the pump is nested within the motor. A radial cooling channel extends in a radial direction from the low-pressure chamber to the motor chamber such that fluid in the pump chamber communicates with the rotor and the stator to cool the motor.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: May 21, 2024
    Assignee: Bosch Rexroth Corporation
    Inventors: Enrique Busquets, Uwe Neumann, Andrea Vacca, Federico Zappaterra
  • Publication number: 20240011473
    Abstract: A linear pump assembly includes a cylinder piston disposed in a generally tubular internal cylinder chamber defined within a cylinder housing having first and second ends, a first plunger-cylinder rod securely coupled to a first end of the cylinder piston and disposed in a first generally tubular internal plunger chamber defined within a first plunger housing in linear alignment with the cylinder housing, and a second plunger-cylinder rod securely coupled to a second end of the cylinder piston and disposed in a second generally tubular internal plunger chamber defined within a second plunger housing in linear alignment with the cylinder housing and the first plunger housing. First and second fluid ends are coupled to the first and second plunger housings respectively, the first and second fluid ends each housing a suction valve and a discharge valve.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 11, 2024
    Applicants: SPM Oil & Gas Inc., Bosch Rexroth Corporation
    Inventors: Wesley P. CLARK, Chandu KUMAR, John MCCRADY, Jon FREY, Royce GERNGROSS
  • Patent number: 11806649
    Abstract: A filter adaptor joins a canister filter to a hydraulic manifold block. The adaptor includes a hexagonal tool-receiving portion, an outflow passageway and one or more inflow passageways. The outlet flow passageway extends between opposed ends of the adaptor, and is used to direct filtered fluid from the filter to the manifold block. The inlet flow passageway(s) extend between the one end and a sealed region of the adaptor, and are used to direct fluid from the manifold block to the filter. The adaptor includes auxiliary ports formed in the tool-receiving portion that communicate with the inlet flow passageways and permit monitoring thereof.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: November 7, 2023
    Assignees: Bosch Rexroth Corporation, Robert Bosch GmbH
    Inventors: Jim Diehl, Oliver Gerhard, Jon Frey
  • Patent number: 11512716
    Abstract: A closed-circuit, self-contained hydraulic axis includes an electric motor, a hydraulic cylinder configured to be connected to a load and a main pump driven by the electric motor to pump hydraulic fluid through the circuit. Pressure connections of the pump are connected to the respective chambers of the cylinder such that the cylinder rod is configured to extend and retract depending on a direction of flow of the hydraulic fluid through the main pump. The hydraulic axis includes a main accumulator connected to the pump via first control valve, an energy storage accumulator connected to the pump via a second control valve, and a charge pump. The hydraulic axis is switchable between a first operating mode that is free of energy storage in the energy storage accumulator, and a second operating mode in which energy is stored in the energy storage accumulator.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: November 29, 2022
    Assignees: Bosch Rexroth Corporation, Robert Bosch GmbH
    Inventors: Royce Gerngross, Reiner Knoell, Oliver Gerhard, Jim Edward Diehl
  • Patent number: 11459716
    Abstract: An electrohydraulic system configured to operate a number of snow-removal components associated with a vehicle. The electrohydraulic system may comprise a controller, a number of actuators in electrical communication with the controller, a user interface in electrical communication with the controller, and a number of input regulators operable to regulate the control of the actuators.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: October 4, 2022
    Assignees: Bosch Rexroth Canada Corporation, Robert Bosch GmbH
    Inventors: Jun Zhang, Boyd de Waard, Tim Giesbrecht
  • Patent number: 10982743
    Abstract: A rotary electrohydraulic actuator includes a direct drive hydraulic motor having an output shaft through opening that is concentric with a rotational axis of a rotor of the hydraulic motor. The actuator includes a power plant mounted on the hydraulic motor via a manifold. The power plant includes an electric motor driven hydraulic pump. Operation of the electric motor causes the hydraulic pump to supply pressurized fluid to the hydraulic motor. The power plant is compactly mounted to the manifold so that a longitudinal axis of the electric motor is parallel to and spaced apart from the rotational axis of the hydraulic motor.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 20, 2021
    Assignees: Bosch Rexroth Corporation, Robert Bosch GmbH
    Inventors: Manik Kapoor, Royce Gerngross
  • Patent number: 10760656
    Abstract: A belt-driven linear module includes a tensioning assembly and a drive belt. The tensioning assembly includes a support shaft and a bearing. The support shaft is configured to be installed at a driven end of the linear module. The bearing includes an inner ring and an outer ring. The inner ring is positioned on the support shaft, and the outer ring is configured to be wrapped by the drive belt of the linear module so as to tension the drive belt of the linear module.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 1, 2020
    Assignees: Bosch Rexroth (Changzhou) Co. Ltd., Robert Bosch GmbH
    Inventors: Daniel Senft, Zhilei Ding
  • Patent number: 10487960
    Abstract: A hydraulic valve comprises: a spool; and a valve body defining a valve chamber for receiving the spool, wherein the spool is adapted to linearly reciprocate within the valve chamber in an axial direction, the valve chamber at least comprises a pressure chamber and a first working chamber, between which a first valve body shoulder is provided on the valve body, and the spool has a first spool shoulder adapted to contact with or axially disengage from the first valve body shoulder in order to hydraulically isolate the pressure chamber from the first working chamber or communicate the pressure chamber with the first working chamber.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 26, 2019
    Assignee: Bosch Rexroth (Changzhou) Co. Ltd.
    Inventor: Qihui Hu
  • Patent number: 9657754
    Abstract: There is provided a hydraulic circuit which can further improve a responsive characteristic in a pressure reducing operation and a reliability in the pressure reducing operation of a relief valve device, when a main circuit pressure exceeds a predetermined pressure.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: May 23, 2017
    Assignee: Bosch Rexroth Corporation
    Inventor: Nobuhisa Matsushima
  • Patent number: 9429152
    Abstract: A method for controlling a variable displacement pump by calculation by a controller using a closed-center-type directional control valve, the method allowing effective utilization of the variable displacement pump while avoiding the risk of engine stall is provided. The method includes determining a first virtual discharge pressure and a second virtual discharge pressure. The method includes controlling the variable displacement pump based on a smaller value of the first virtual discharge pressure and the second virtual discharge pressure.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: August 30, 2016
    Assignee: Bosch Rexroth Corporation
    Inventor: Kenpei Yamaji
  • Patent number: 9106441
    Abstract: A method for operating a redundant communication network with network participants includes the steps of determining by network participants to which network channels they are connected and using a telegram for said determining by the network participants to which network channels they are connected.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: August 11, 2015
    Assignee: Bosch Rexroth AG
    Inventors: Stephan Schultze, Rigobert Kynast, Ludwig Leurs, Thomas Schmid
  • Publication number: 20150020516
    Abstract: There is provided a hydraulic circuit which can further improve a responsive characteristic in a pressure reducing operation and a reliability in the pressure reducing operation of a relief valve device, when a main circuit pressure exceeds a predetermined pressure.
    Type: Application
    Filed: April 3, 2012
    Publication date: January 22, 2015
    Applicant: BOSCH REXROTH CORPORATION
    Inventor: Nobuhisa Matsushima
  • Patent number: 8726977
    Abstract: Pressure vessel assembly for a pressurized fluid system, comprises an enclosed outer casing, at least one internal tube extending within the casing, at least one fluid accumulator disposed within the at least one internal tube, and at least one cooling passage provided within the at least one internal tube and defined by a clearance between the at least one hydraulic fluid accumulator and the at least one internal tube. The pressure vessel assembly further includes a fluid storage compartment formed between the outer casing and the at least one internal tube. The fluid storage compartment is at least partially filled with a working fluid. The pressurized fluid system also includes a cooling fan allowing forced airflow through the cooling passage for forced cooling of the at least one hydraulic fluid accumulator and the working fluid in the storage compartment of the pressure vessel assembly.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: May 20, 2014
    Assignee: Bosch Rexroth Corporation
    Inventor: Kenric Rose
  • Publication number: 20130276925
    Abstract: The present invention relates to a pressure regulating device (1), in particular a hand- or foot-operated hydraulic controller for a heavy construction machine, characterised in that it comprises an electrical or electronic means (20) for determining the position of the actuator (18) or the push button (7) including a proportional sensor comprising, on the one hand, a mobile member (21) following the movement of the actuator (18) or a push button (7) and, on the other hand, a contactless means (22) for detecting the position of the mobile member (21) secured to the body (2), as well as an anti-tilting system, a load sensing system for controlling the pressure increase, the idling delivery of the heat engine, or a flow sharing system, comprising such a pressure regulating device (1).
    Type: Application
    Filed: January 9, 2012
    Publication date: October 24, 2013
    Applicant: BOSCH REXROTH D.S.I.
    Inventors: Didier Merletti, Jean-Luc Boudou
  • Patent number: 8499654
    Abstract: The invention relates to an electrically driven linear actuator for linearly moving a mass, in which at least one elongated actuator element, which, on the output side, acts upon the mass, is mounted inside a main pipe in a manner that enables it to slide in an axial direction, and which, on the input side, is coupled to a spindle nut that, itself, rests upon a spindle, which is rotationally mounted inside the main pipe and which can be placed in rotational motion by an electric motor.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: August 6, 2013
    Assignee: Bosch Rexroth AG
    Inventor: Leo Ymker
  • Patent number: D686650
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: July 23, 2013
    Assignee: Bosch Rexroth AG
    Inventors: Martin Schultheiss, Christain Spielvogel
  • Patent number: D718359
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: November 25, 2014
    Assignee: Bosch Rexroth AG
    Inventor: Christian Hoermann
  • Patent number: D737766
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: September 1, 2015
    Assignee: Bosch Rexroth AG
    Inventor: Keith Faskin
  • Patent number: D741147
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 20, 2015
    Assignee: Bosch Rexroth AG
    Inventors: Hans-Peter Buttau, Herbert Velten
  • Patent number: D971263
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: November 29, 2022
    Assignees: Bosch Rexroth (Beijing) Hydraulic Co. Ltd., Robert Bosch GmbH
    Inventor: Wei Wang