Patents Assigned to HAWE Hydraulik SE
  • Publication number: 20250236258
    Abstract: A hydraulic system for a passenger restraint device includes a hydraulic pump and a hydraulic section. The hydraulic section includes a hydraulic accumulator, a valve arrangement and a hydraulic cylinder unit with a piston. The valve arrangement is connected to the hydraulic pump, the hydraulic accumulator and the hydraulic cylinder unit. The piston can be moved between an open position and a first closed position. The hydraulic pump can pressurize the hydraulic cylinder unit so that the piston moves from the first closed position to the open position. The hydraulic accumulator is configured so that the piston moves from the open position to the first closed position. The hydraulic cylinder unit can be pressurized in a first switching position of the valve arrangement with a first pressure stage and in a second switching position of the valve arrangement with a second pressure stage lower than the first pressure stage.
    Type: Application
    Filed: January 15, 2025
    Publication date: July 24, 2025
    Applicant: HAWE Hydraulik SE
    Inventors: Alexander Ahle, Sebastian Muthig
  • Publication number: 20250222365
    Abstract: A mobile hydraulic system includes a plurality of hydraulic units which are equipped with at least one hydraulic component and an electronic unit. The respective electronic units are configured to record operating data of the at least one hydraulic component of the respective hydraulic units. Each hydraulic unit has a wireless communication device, wherein the wireless communication devices of the respective hydraulic units are connected to each other in a common wireless network, preferably in a mesh network. The wireless communication devices are configured for wireless transmission of the recorded operating data of the hydraulic units in the wireless network.
    Type: Application
    Filed: January 7, 2025
    Publication date: July 10, 2025
    Applicant: HAWE Hydraulik SE
    Inventors: Benjamin Hasner, Markus Neumair
  • Publication number: 20250215852
    Abstract: A hydraulic device for a pitch system of a wind turbine includes an air separation device which includes a fluid collector having an air accumulation portion, at least one fluid inlet and a fluid outlet portion, wherein a fluid emulsion of air and hydraulic fluid can be introduced into the fluid collector through the at least one fluid inlet. The fluid collector is labyrinth-shaped so that rotation of the air separation device about an axis of rotation causes the air in the fluid emulsion to move through the labyrinth-shaped fluid collector in a direction to the air accumulation portion and the hydraulic fluid in the fluid emulsion to move through the labyrinth-shaped fluid collector in a direction to the fluid outlet portion.
    Type: Application
    Filed: December 18, 2024
    Publication date: July 3, 2025
    Applicant: HAWE Hydraulik SE
    Inventor: Jesper Berg Hansen
  • Patent number: 12286981
    Abstract: A hydraulic valve bank has at least two valve sections, a connection section, and a pressure channel for pressurizing the valve sections. The pressure channel connects the connection section to each valve section for pressurizing them. Each valve section has a spool, an electrohydraulic pilot control for actuating the spool and an upstream pressure compensator. The valve bank is a load-sensing system and has a load pressure collecting channel for signaling the highest load pressure. A common pilot pressure signal is applied to the electrohydraulic pilot control of each valve section via the connection section. A single pilot control pressure influencing valve changes the common pilot pressure signal, and is connected to the pressure channel to be acted upon in a first switching direction, and to the load pressure collecting channel to be acted upon in a second switching direction. A mobile hydraulic system includes such a hydraulic valve bank.
    Type: Grant
    Filed: June 20, 2024
    Date of Patent: April 29, 2025
    Assignee: HAWE Hydraulik SE
    Inventors: Thomas Wechsel, Sascha Rümenap
  • Publication number: 20250131170
    Abstract: A method for automatically generating an individual hydraulic component characteristic map for an individual hydraulic component V1, V2 of a hydraulic component type uses an autoencoder, which is trained using a training data set for the hydraulic component type, and a reduced individual data set, which is generated for the individual hydraulic component V1, V2, in order to automatically generate the individual hydraulic component characteristic map, for example in the form of a lookup table.
    Type: Application
    Filed: October 22, 2024
    Publication date: April 24, 2025
    Applicant: HAWE Hydraulik SE
    Inventors: Fabian Kreutmayr, Markus Imlauer
  • Publication number: 20250122862
    Abstract: A hydraulic system for the pitch angle adjustment of a rotor blade of a wind turbine) includes a variable displacement pump, a hydraulic accumulator, a dynamic valve, a control valve, a tank and a pitch cylinder. The variable displacement pump is connected to the control valve via a first connecting line and the control valve is connected to the tank via a second connecting line and to a piston side of the pitch cylinder via a third connecting line and to a rod side of the pitch cylinder via a fourth connecting line. In a first switching position, the first connecting line is connected to the third connecting line and in a second switching position, the first connecting line is connected to the fourth connecting line and the second connecting line is connected to the third connecting line.
    Type: Application
    Filed: October 8, 2024
    Publication date: April 17, 2025
    Applicant: HAWE Hydraulik SE
    Inventors: Andreas Nocker, Thomas Wechsel, Jesper Berg Hansen
  • Patent number: 12274653
    Abstract: A hydraulic drive unit for a stretcher has a hydraulic circuit with a differential cylinder, a pump, a tank and a valve assembly. The differential cylinder includes a rod working chamber and a piston working chamber. The valve assembly is switchable into at least a first state and a second state, wherein the rod working chamber is connected to the tank in the first state and to the pump in the second state, and wherein the piston working chamber is connected to the pump in the first state and to the tank in the second state. The tank is a tank separated from the atmosphere with a variable tank volume, so that the hydraulic circuit is configured as a closed hydraulic circuit. A stretcher having such a hydraulic drive unit is also provided.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: April 15, 2025
    Assignee: HAWE HYDRAULIK SE
    Inventor: Christian Hart
  • Patent number: 12247671
    Abstract: A hydraulic valve includes a valve housing, a valve cone, a spring housing, a check valve, a first hydraulic connection and a second hydraulic connection. The valve housing has a valve seat and the valve cone is movable in the valve housing between a closed position and an open position. In the closed position, the valve cone is in contact with the valve seat and blocks a first flow path between the first and the second hydraulic connection. In the open position, the valve cone is lifted off the valve seat and the first flow path is opened. A spring element is disposed in the spring housing, which biases the valve cone into the closed position. The check valve is disposed in the valve cone and opens a second flow path from the second hydraulic connection to the first hydraulic connection when pressure is applied to the second hydraulic connection.
    Type: Grant
    Filed: June 5, 2023
    Date of Patent: March 11, 2025
    Assignee: HAWE Hydraulik SE
    Inventors: Georg Jemüller, Dominic Nießlein
  • Publication number: 20250075678
    Abstract: An additional hydraulic device for a pitch system of a wind turbine, the additional hydraulic device including a hydraulic motor, a hydraulic accumulator for storing hydraulic energy, a valve unit, a return line and a reservoir. The return line is connected to the reservoir. The valve unit is switchable to a drive switching position, and the hydraulic motor is connected to the hydraulic accumulator in the drive switching position. The energy stored in the hydraulic accumulator drives the hydraulic motor in the drive switching position so that the hydraulic motor delivers an additional force component.
    Type: Application
    Filed: September 4, 2024
    Publication date: March 6, 2025
    Applicant: HAWE Hydraulik SE
    Inventors: Andreas Nocker, Jesper Berg Hansen, Thomas Wechsel, Lucas Schubart
  • Patent number: 12240584
    Abstract: A boat drive hydraulic steering unit has a steering cylinder unit, pump and tank. The cylinder unit has a first chamber, piston and second chamber. The pump is connected to the first and second chambers by respective first and second line. The first chamber is connected to the tank via the first line arrangement when the second chamber is pressurized, by the first line arrangement having a first check valve which opens when the second line arrangement is pressurized. The second chamber is connected to the tank via the second line arrangement when the first chamber is pressurized, by the second line arrangement having a second check valve which opens when the first line arrangement is pressurized. The first and second line arrangements have respective first and second throttling devices acting in the direction of flow towards the tank. A boat drive may include the steering unit.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: March 4, 2025
    Assignee: HAWE Hydraulik SE
    Inventors: Paul Franz, Florian Mayr, Jürgen Osterried, Michael Stegmüller, Markus Weiss
  • Patent number: 12140164
    Abstract: An electrohydraulic control device for an adjustable hydraulic pump system includes a valve device, an electronic control unit and a first fluid sensor. The valve device includes a pressure inlet, a tank outlet and a first electromagnetically actuated valve. An outlet pressure of the first adjustable hydraulic pump system is applied to the pressure inlet. The first fluid sensor detects an actual value of a fluid parameter of the first adjustable hydraulic pump system and transmits it to the electronic control unit. The electronic control unit includes computer-based modeling of the dynamics of the first adjustable hydraulic pump system, and actuates the first electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling.
    Type: Grant
    Filed: March 2, 2023
    Date of Patent: November 12, 2024
    Assignee: HAWE Hydraulik SE
    Inventors: Fabian Kreutmayr, Andreas Jell, Markus Imlauer
  • Patent number: 12129873
    Abstract: A hydraulic valve assembly includes a connection section, a first valve section and a pressure line. The first valve section has a first spool piston, a first spool diverter, at least one first consumer port and at least one second consumer port. The first spool diverter can be switched at least into a first spool diverter switching position and a second spool diverter switching position. A shut-off valve is disposed in the pressure line and blocks the pressure line in a blocking position and can be switched from the blocking position into a first release switching position and a second release switching position. The shut-off valve switches into the first release switching position when the first spool diverter is in the first spool diverter switching position and into the second release switching position when the first spool diverter is in the second spool diverter switching position.
    Type: Grant
    Filed: July 25, 2023
    Date of Patent: October 29, 2024
    Assignee: HAWE Hydraulik SE
    Inventors: Thomas Wechsel, Jean-Michel Sabatier
  • Patent number: 12085101
    Abstract: A cylinder device for a hydraulic lifting device has a housing and a piston rod axially movable relative to the housing. A rotary element is mounted on the housing in such a way that a rotary movement of the rotary element relative to the housing is possible and an axial movement of the rotary element relative to the housing is prevented. The piston rod has a movement transmission element, wherein the movement transmission element translates an axial movement of the piston rod into a rotary movement of the rotary element. A sensor unit is attached to the housing, which detects the rotary movement of the rotary element. Furthermore, a hydraulic lifting device with such a cylinder device, a chassis of a mobile device with a lifting device and a mobile device with a chassis are provided.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: September 10, 2024
    Assignee: HAWE Hydraulik SE
    Inventors: Sven Müller, Alexander Ahle, Martin Resch
  • Patent number: 11970257
    Abstract: A hydraulic power trim lift device for a marine propulsion system has at least one lift cylinder, at least one pump and a tank. The lift cylinder has a lift piston chamber and a lift rod chamber separated from the lift piston chamber by a lift cylinder piston. The pump is connected to the lift rod chamber via a first line arrangement and to the lift piston chamber via a second line arrangement. The lift piston chamber is connected to the tank via the second line arrangement when the first line arrangement is pressurized. The second line arrangement has a flow control device acting in the direction of flow to the tank. Furthermore, a marine propulsion system with such a power trim lift device is provided.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: April 30, 2024
    Assignee: HAWE Hydraulik SE
    Inventors: Paul Franz, Florian Mayr, Jürgen Osterried
  • Patent number: 11919466
    Abstract: A passenger restraint device of a fairground ride passenger unit, which has a passenger space, includes a position-adjustable restraint element and a lockable hydraulic adjuster which acts on the restraint element and has a cylinder-piston unit and a hydraulic accumulator. The hydraulic accumulator and the cylinder-piston unit of the hydraulic adjuster form a structural unit in that the cylinder of the cylinder-piston unit and a cylinder of the hydraulic accumulator arranged next to and parallel to the cylinder are part of an integrated cylinder assembly. The integrated cylinder assembly has a connection block with a switching plate on an axial end face, wherein the hydraulic accumulator is configured as a single unit and is detachably mounted on the switching plate.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: March 5, 2024
    Assignee: HAWE Hydraulik SE
    Inventor: Alexander Ahle
  • Patent number: 11815918
    Abstract: A preselection valve is for a hydraulic valve assembly with a switching element, a pressure input line, a first pressure output line and a first load pressure line with a load pressure inlet and output. The switching element is switchable from neutral to a first switching position. The pressure input line is connected to the first pressure output line in the first position. The preselection valve has a second and third load pressure line and a load pressure increasing device. The second load pressure line branches off the pressure input line upstream of the switching element. The load pressure increasing device is connected to the third load pressure line, which connects the pressure increasing device to the first load pressure line. The second load pressure line is connected to the pressure increasing device in the first switching position and the second load pressure line is blocked in the neutral position.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: November 14, 2023
    Assignee: HAWE Hydraulik SE
    Inventors: Thomas Wechsel, Walter Steiler, Martin Heusser
  • Patent number: 11808288
    Abstract: A hydraulic component for vehicles, such as for maritime applications, is a hydraulic cylinder-piston unit. The piston of the hydraulic component has a piston rod with a measurement section. A magnetic rod in the piston rod extends over the measurement section. The magnetic rod has a helically varied magnetic field direction. The hydraulic component includes a sensor device having a scanning region measuring the field direction. The sensor device is arranged such that, over the entire stroke path of the piston, at least a part of the magnetic rod is located in the scanning region. The sensor device has a sensor unit configured to transmit measurement results for the field direction to a processing unit, configured to process and output the measurement results. Furthermore, the present invention relates to a hydraulic adjustment system having at least one hydraulic component and a vehicle having at least one hydraulic adjustment system.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: November 7, 2023
    Assignee: HAWE HYDRAULIK SE
    Inventors: Jurgen Osterried, Florian Mayr, Peter Roider, Paul Franz, Peter Muller
  • Patent number: 11732734
    Abstract: A hydraulic control system includes a first hydraulic cylinder, a second hydraulic cylinder, a fluid supply apparatus, a first control valve bank, a second control valve bank, a third control valve bank, and a first check valve. The first control valve bank is configured to independently control the first hydraulic cylinder; the second control valve bank is configured to independently control the second hydraulic cylinder; and the third control valve bank is configured to synchronously control the first hydraulic cylinder and the second hydraulic cylinder. Synchronous volume control is implemented through series connection of the hydraulic cylinders, and has quite high synchronization precision, which is measured to be up to two percent.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: August 22, 2023
    Assignees: HAWE HYDRAULIK (WUXI) CO., LTD., HAWE HYDRAULIK SE
    Inventor: Changfa Huang
  • Patent number: 11679043
    Abstract: A hydraulic system for a mobile rescue stretcher has a hydraulic cylinder, with first and second working chambers, a tank and pump. The first and second chambers are connected to the pump via first and second line arrangements, respectively, and can be pressurized by the pump. Hydraulic fluid flows out of the first chamber via the first line arrangement when pressure is applied to the second chamber. The first line arrangement has a first check valve which opens when pressure is applied to the second line arrangement. Hydraulic fluid flows out of the second chamber via the second line arrangement when pressure is applied to the first chamber. The second line arrangement has a first branch line connected to the pump and a second branch line connected to the tank. A pressure valve in the second branch line opens when pressure is applied to the second line arrangement.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: June 20, 2023
    Assignee: HAWE HYDRAULIK SE
    Inventor: Christian Hart
  • Patent number: D986381
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: May 16, 2023
    Assignee: HAWE HYDRAULIK SE
    Inventor: Georg Aneder