公开(公告)号：US20210190095A1

公开(公告)日：2021-06-24

申请号：US17127578

申请日：2020-12-18

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Federica FRANZONI ,  Nicola Francesco MUSCIAGNA ,  Fabio NATALI ,  Alessandro SASSI

IPC: F15B1/02 ,  E02F9/22 ,  F15B21/14

Abstract: Hydraulic systems and methods comprising a source of hydraulic pressure; a hydraulic load; and an energy recovery circuit. The source of hydraulic pressure is fluidly connected to the hydraulic load through a first hydraulic channel with an orifice. The energy recovery circuit includes a recovery channel which is fluidly connected at its first end to the orifice on the side of it which is connected to the source of hydraulic pressure, and which is fluidly connected at its second end to a hydraulic motor.

公开(公告)号：US20200248726A1

公开(公告)日：2020-08-06

申请号：US16781959

申请日：2020-02-04

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Alessandro SASSI ,  Fabio NATALI ,  Federica FRANZONI ,  Marco CANDURA

IPC: F15B15/14

Abstract: The present invention relates to a piston for hydraulic machines with axial positions, comprising a head connected to a stem which is extended along a longitudinal axis and forms a bottom arranged at the opposite end with respect to said head. The piston is further provided with at least one intake duct passing within it and having a first and a second end, which are mutually opposite, open respectively at the head and at the bottom. The distinctive aspect of the invention is that the piston also comprises at least one distribution duct passing within it, which has a first and a second end, which are mutually opposite, the first end of which is in fluid communication with the intake duct and the second end of which is open at the head, the piston being provided monolithically.

公开(公告)号：US20240318672A1

公开(公告)日：2024-09-26

申请号：US18415185

申请日：2024-01-17

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Federica FRANZONI ,  Fabio NATALI ,  Alessandro SASSI

IPC: F15B13/04 ,  F15B21/02

CPC classification number: F15B13/0416 ,  F15B21/02 ,  F15B2201/4056 ,  F15B2211/20538

Abstract: Methods and systems for a hydraulic unit. In one example, a hydraulic unit includes a torque sensor external mounted to a housing of the hydraulic unit, wherein a torque sensor mount is physically coupled to a planar portion of the housing near a flange through which a drive shaft extends.

公开(公告)号：US20240318642A1

公开(公告)日：2024-09-26

申请号：US18188281

申请日：2023-03-22

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Federica FRANZONI ,  Fabio NATALI ,  Alessandro SASSI

IPC: F04B1/2021 ,  F04B1/2042

CPC classification number: F04B1/2021 ,  F04B1/2042

Abstract: Methods and systems for a variable balancing piston motor are described. In one example, a hydraulic displacement motor includes a valve plate coupled to at least one piston of a cylinder block, the valve plate comprising a plurality of grooves fluidly coupled to a passage comprising a valve.

公开(公告)号：US20230235835A1

公开(公告)日：2023-07-27

申请号：US18149346

申请日：2023-01-03

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Alessandro SASSI ,  Vanni CATELLANI ,  Stefano FASANO ,  Federica FRANZONI ,  Stefano LAZZARETTI

IPC: F16K31/363 ,  B66D1/08 ,  F15B13/02

CPC classification number: F16K31/363 ,  B66D1/08 ,  F15B13/02

Abstract: A valve assembly and a hydraulic circuit including the valve assembly are provided. The valve assembly comprises a hydraulically actuated valve configured to be biased from a first control position to a second control position by a hydraulic pressure applied to a first fluid port of the hydraulically actuated valve. A first switching threshold pressure required to switch the hydraulically actuated valve to its second control position when applied to the first fluid port of the hydraulically actuated valve in its first control position differs from a second switching threshold pressure required to keep the hydraulically actuated valve in its second control position when applied to the first fluid port of the hydraulically actuated valve in its second control position.

公开(公告)号：US20240011471A1

公开(公告)日：2024-01-11

申请号：US18349239

申请日：2023-07-10

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Luca FONTANESI ,  Alessandro SASSI ,  David GAMBUZZI

IPC: F04B1/2085

CPC classification number: F04B1/2085 ,  F16C19/502

Abstract: The present disclosure relates to a coupling assembly for a variable displacement hydraulic unit. The coupling assembly may have a rotatable swashplate, a swashplate bearing including a cage and a plurality of rollers mounted on the cage, a pin fixed to the swashplate, and a coupling member rotatably supported on the pin. The coupling member is configured to contact a portion of the cage to move the swashplate bearing upon rotation of the swashplate

公开(公告)号：US20230349397A1

公开(公告)日：2023-11-02

申请号：US18305600

申请日：2023-04-24

Applicant: Dana Motion Systems Italia S.r.l.

Inventor： Stefano FASANO ,  Daniele DODI ,  Bartoli MAURIZIO ,  Alessandro SASSI

IPC: F15B11/17 ,  F15B13/02

CPC classification number: F15B11/17 ,  F15B13/026 ,  F15B2211/20576

Abstract: The present document relates to a hydraulic system having a first hydraulic pump, a second hydraulic pump, at least one hydraulic actuator, a low-pressure tank, and a pressure controlled flow compensating valve. A high-pressure port of the first hydraulic pump and a high-pressure port of the second hydraulic pump are fluidly connected or fluidly connectable to the at least one hydraulic actuator. The high-pressure port of the second hydraulic pump is selectively fluidly connectable to the low-pressure tank via the flow compensating valve. The flow compensating valve is controllable by or based on one or more of: a hydraulic pressure provided by the first hydraulic pump, a hydraulic pressure provided by the second hydraulic pump, and a hydraulic pressure at a fluid port of the at least one hydraulic actuator.

公开(公告)号：US20210317830A1

公开(公告)日：2021-10-14

申请号：US17272198

申请日：2019-09-02

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Federica FRANZONI ,  Alessandro SASSI

IPC: F04C2/10 ,  F04C15/00 ,  F04C2/08 ,  F03C2/30

Abstract: Provided is a hydraulic orbital machine and a method of adjusting a hydraulic orbital machine comprising a first and a second lobed disk which rotate eccentrically about a rotation axis and within respective rotors; the machine is characterized by the fact that it has adjustment means designed to mutually angularly offset the angles at which, when the machine is at a standstill, the chambers defined between the lobed disks and the stator have minimum volume.

公开(公告)号：US20240280020A1

公开(公告)日：2024-08-22

申请号：US18170357

申请日：2023-02-16

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Federica FRANZONI ,  Fabio NATALI ,  Alessandro SASSI

IPC: F01B3/02 ,  F01B3/00 ,  F01B3/10

CPC classification number: F01B3/02 ,  F01B3/0035 ,  F01B3/0085 ,  F01B3/103

Abstract: Systems and methods for a variable displacement hydraulic motor. The hydraulic motor, in one example, includes a swash plate with a tilt angle, multiple piston assemblies configured to rotate about a drive shaft. In the motor, each of the piston assemblies includes an inner piston slideably coupled to an outer piston that mates with a cylinder in a cylinder block and a retainer device configured to inhibit axial movement of the outer piston in a first position and permit axial movement of the outer piston in a second position.

公开(公告)号：US20240151225A1

公开(公告)日：2024-05-09

申请号：US18500892

申请日：2023-11-02

Applicant: Dana Motion Systems Italia S.R.L.

Inventor： Luca FONTANESI ,  Alessandro SASSI ,  David GAMBUZZI

IPC: F04B53/14 ,  F01B3/00 ,  F04B19/22

CPC classification number: F04B53/14 ,  F01B3/007 ,  F04B19/22

Abstract: The present disclosure relates to a zeroing device comprising a piston movable along an axis, at least one biasing member for biasing the piston along the axis, and an axially displaceable zeroing member limiting axial movement of the at least one biasing member. The present disclosure further relates to a variable displacement hydraulic unit including said zeroing device.