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公开(公告)号：US10066671B2
公开(公告)日：2018-09-04
申请号：US14884925
申请日：2015-10-16
Applicant: Danfoss Power Solutions, Inc.
Inventor： Stephen Frantz
IPC: F16C33/78 , F16C35/07 , F16C35/063 , F16C3/06 , F16C23/04 , F16C23/08 , F16C33/58 , F16C19/46 , F16C19/54
CPC classification number: F16C35/07 , F16C3/06 , F16C3/18 , F16C9/02 , F16C19/06 , F16C19/46 , F16C19/54 , F16C23/04 , F16C23/08 , F16C33/586 , F16C35/063
Abstract: A bearing arrangement includes a shaft with an outer circumferential supporting surface, and a mounting device with an inner circumferential supporting surface. The mounting device supports the shaft in a rotatable manner using a bearing structure. At least one tiltable sleeve member is arranged between at least one of the supporting surfaces and the bearing structure.
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公开(公告)号：US10385880B2
公开(公告)日：2019-08-20
申请号：US15481731
申请日：2017-04-07
Applicant: Danfoss Power Solutions, Inc.
Inventor： Stephen Frantz
IPC: F15B13/02 , F04B49/00 , F03C1/06 , F03C1/40 , F16H61/46 , F15B11/04 , B60T13/24 , F16H61/423 , F16H61/47
Abstract: A hydraulic unit includes a driving mechanism whose displacement volume is adjustable to two operational states by means of a position-able adjustment element. The adjustment element can be positioned by a servo piston of a servo unit into a first, initial position and a second, operative position. A first front face and a second front face of the servo piston, which are opposing each other, can be pressurized individually with pressurized hydraulic fluid in order to position the servo piston at either end position of a servo cylinder of the servo unit. The servo piston is of a stepped design thereby forming a ring-shaped damping surface opposing the first front face. In the servo cylinder a ring-shaped shoulder surface is formed opposing the damping surface such that a damping volume is formed in the servo cylinder by the damping surface, the shoulder surface and the servo cylinder.
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Patent Agency Ranking
公开(公告)号：US20180291932A1
公开(公告)日：2018-10-11
申请号：US15481731
申请日：2017-04-07
Applicant: Danfoss Power Solutions, Inc.
Inventor： Stephen Frantz
CPC classification number: F15B13/02 , B60T13/245 , F03C1/0668 , F03C1/0686 , F04B49/002 , F15B11/04 , F16H61/423 , F16H61/46 , F16H61/47
Abstract: A hydraulic unit includes a driving mechanism whose displacement volume is adjustable to two operational states by means of a position-able adjustment element. The adjustment element can be positioned by a servo piston of a servo unit into a first, initial position and a second, operative position. A first front face and a second front face of the servo piston, which are opposing each other, can be pressurized individually with pressurized hydraulic fluid in order to position the servo piston at either end position of a servo cylinder of the servo unit. The servo piston is of a stepped design thereby forming a ring-shaped damping surface opposing the first front face. In the servo cylinder a ring-shaped shoulder surface is formed opposing the damping surface such that a damping volume is formed in the servo cylinder by the damping surface, the shoulder surface and the servo cylinder.
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公开(公告)号：US20170108048A1
公开(公告)日：2017-04-20
申请号：US14884925
申请日：2015-10-16
Applicant: Danfoss Power Solutions, Inc.
Inventor： Stephen Frantz
CPC classification number: F16C35/07 , F16C3/06 , F16C3/18 , F16C9/02 , F16C19/06 , F16C19/46 , F16C19/54 , F16C23/04 , F16C23/08 , F16C33/586 , F16C35/063
Abstract: A bearing arrangement includes a shaft with an outer circumferential supporting surface, and a mounting device with an inner circumferential supporting surface. The mounting device supports the shaft in a rotatable manner using a bearing structure. At least one tiltable sleeve member is arranged between at least one of the supporting surfaces and the bearing structure.
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公开(公告)号：US20230136445A1
公开(公告)日：2023-05-04
申请号：US18147029
申请日：2022-12-28
Applicant: Danfoss Power Solutions, Inc.
Inventor： Steven Leege , Stephen Frantz , Jeffrey C. Hansell
Abstract: A hydraulic piston unit including a rotational group for driving or being driven by a driving shaft, and having a tiltable displacement element for adjusting the displacement volume of the rotational group between a minimum or a maximum displacement, wherein, on t valve segment between a kidney-shaped inlet port and a kidney-shaped outlet port at respective dead end positions of reciprocally moveable working pistons first and second control ports are located in fluid connection with cylinder bores in the cylinder block, for controlling the position of the displacement element. The hydraulic piston unit further includes a control valve with a shiftable control valve spool fluidly connected via a high pressure port to a high pressure side of the hydraulic piston unit. The control valve spool is configured to conduct hydraulic fluid from the high pressure side to one of the first or the second control port.
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公开(公告)号：US11592000B2
公开(公告)日：2023-02-28
申请号：US16050001
申请日：2018-07-31
Applicant: Danfoss Power Solutions, Inc.
Inventor： Steven Leege , Stephen Frantz , Jeffrey C. Hansell
Abstract: A hydraulic piston unit including a rotational group for driving or being driven by a driving shaft, and having a tiltable displacement element for adjusting the displacement volume of the rotational group between a minimum or a maximum displacement, wherein, on t valve segment between a kidney-shaped inlet port and a kidney-shaped outlet port at respective dead end positions of reciprocally moveable working pistons first and second control ports are located in fluid connection with cylinder bores in the cylinder block, for controlling the position of the displacement element. The hydraulic piston unit further includes a control valve with a shiftable control valve spool fluidly connected via a high pressure port to a high pressure side of the hydraulic piston unit. The control valve spool is configured to conduct hydraulic fluid from the high pressure side to one of the first or the second control port.
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公开(公告)号：US20200040867A1
公开(公告)日：2020-02-06
申请号：US16050001
申请日：2018-07-31
Applicant: Danfoss Power Solutions, Inc.
Inventor： Steven Leege , Stephen Frantz , Jeffrey C. Hansell
Abstract: A hydraulic piston unit including a rotational group for driving or being driven by a driving shaft, and having a tiltable displacement element for adjusting the displacement volume of the rotational group between a minimum or a maximum displacement, wherein, on t valve segment between a kidney-shaped inlet port and a kidney-shaped outlet port at respective dead end positions of reciprocally moveable working pistons first and second control ports are located in fluid connection with cylinder bores in the cylinder block, for controlling the position of the displacement element. The hydraulic piston unit further includes a control valve with a shiftable control valve spool fluidly connected via a high pressure port to a high pressure side of the hydraulic piston unit. The control valve spool is configured to conduct hydraulic fluid from the high pressure side to one of the first or the second control port.
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