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1. 发明授权

US11215172B2 Hydrostatic positive displacement machine 有权
公开(公告)号：US11215172B2
公开(公告)日：2022-01-04
申请号：US16530321
申请日：2019-08-02
申请人： Robert Bosch GmbH
发明人： Markus Kroneis
IPC分类号： F04B1/324 , F04B1/2078 , F04B1/124 , F04B1/32 , F04B1/20 , F04B49/00 , F04B1/328 , F04B27/18 , F04B27/10 , F03C1/40 , F03C1/06 , F03C1/32 , F04B49/08
摘要： A hydrostatic positive displacement machine has an adjustable swept volume, and has a lifting element, a rotor with positive displacement elements supported on the lifting element, and a hydraulic adjusting device that adjusts the swept volume and includes an adjusting piston that is mounted in or on a cylinder, is movable axially rectilinearly in relation to the cylinder, and is adjacent to a pressurizable adjusting chamber. A bearing gap is formed between a circular-cylindrical bearing surface of the adjusting piston and a circular-cylindrical bearing surface of the cylinder. The adjusting piston is mounted hydrostatically, wherein at least three pressure pockets are distributed uniformly in a row over the circumference of a bearing surface. Pressure fluid flows into each pressure pocket via a fixed throttle, which is assigned only to the respective pressure pocket, and flows out of each pressure pocket via the bearing gap.

2. 发明授权

US11002258B2 Port plate for integrated drive generator 有权
公开(公告)号：US11002258B2
公开(公告)日：2021-05-11
申请号：US15874834
申请日：2018-01-18
申请人： HAMILTON SUNDSTRAND CORPORATION
发明人： Derek R. Hochstetler , Ted A. Martin , Duane C. Johnson , Glenn C. Lemmers, Jr.
IPC分类号： F16H39/14 , F04B1/2014 , F03C1/34 , F02C7/32 , F03C1/06 , F04B1/20 , F16H48/10
摘要： A port plate for use in an integrated drive generator has a body defining a semi-cylindrical charge port communicating with two circumferentially smaller charge port portions. A diametrically opposed working pressure port has three smaller working pressure ports. A center plane is defined extending through a center axis of a bore within the body and equidistance between circumferential ends of the charge port and the working fluid port. A first angle is defined between the plane and a circumferential end of the smaller charge port. The first angle is between 15 and 25 degrees. An integrated drive generator and a method are also disclosed.

3. 发明授权

US10961990B2 Hydraulic device 有权
公开(公告)号：US10961990B2
公开(公告)日：2021-03-30
申请号：US16609974
申请日：2018-05-02
申请人： INNAS BV
发明人： Peter Augustinus Johannes Achten
IPC分类号： F04B1/20 , F04B1/2014 , F04B53/14
摘要： A hydraulic device (1) comprises a housing (27), a shaft (2) which is mounted in the housing (27) and rotatable about a first axis of rotation (4), wherein the shaft (2) has a flange (8) extending perpendicularly to the first axis (4), a plurality of pistons (9) which are fixed to the flange (8) at equiangular distance about the first axis of rotation (4), and a plurality of cylindrical sleeves (10) cooperating with the pistons (9) to form respective compression chambers (11) of variable volume. The sleeves (10) are rotatable about a second axis of rotation which intersects the first axis of rotation (4) by an acute angle such that upon rotating the shaft (2) the volumes of the compression chambers (11) change. Each piston (9) has a piston head (14) including a ball-shaped circumferential outer side. Each of the pistons (9) has a modular structure comprising a piston head member (14) which forms the piston head, a piston pin (20) which is fixed to the flange (8) and to which the piston head member (14) is mounted, and a spacer (26) which is located at the outer side of the piston pin (20) and sandwiched between the piston head member (14) and the flange (8).

4. 发明授权

US10900472B1 Pressure compensating pump 有权
公开(公告)号：US10900472B1
公开(公告)日：2021-01-26
申请号：US15697108
申请日：2017-09-06
申请人： Hydro-Gear Limited Partnership
发明人： Nathan W. Bonny
IPC分类号： F04B1/324 , F04B1/2078 , F01B13/04 , F04B1/20 , F01B13/06 , F04B1/12 , F04B1/2042
摘要： A hydraulic pressure compensating pump assembly having a fluid flow regulation mechanism is provided. The fluid flow regulation mechanism is set to an initial stroked position that can be adjusted to accommodate various applications. The fluid flow regulation mechanism includes a biasing means that allows the pump to de-stroke in response to a pressure demand increase and to return to the initial pressure set point when pressure demand subsides sufficiently. Different spring types and spring rates can be specified to achieve a desired response to pressure demand fluctuations within a particular hydraulic circuit.

5. 发明授权

US10794185B2 Cylinder block and swash plate type liquid-pressure rotating apparatus including same 有权
公开(公告)号：US10794185B2
公开(公告)日：2020-10-06
申请号：US16349021
申请日：2017-11-09
申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA
发明人： Koichi Komada , Yuichiro Kuroda , Akihito Mitsuhata , Takaaki Sato
IPC分类号： F01B3/00 , F01B31/08 , F03C1/24 , F04B1/22 , F04B53/08 , F04B1/2035 , F03C1/06 , F03C1/40 , F04B1/324 , F04B1/20
摘要： A cylinder block includes: a plurality of cylinder bores including respective openings formed on a piston insertion end surface of the cylinder block, pistons being inserted in the respective cylinder bores and being configured to reciprocate and slide in the respective cylinder bores when the cylinder block rotates; and a cooling portion, wherein the cooling portion includes a plurality of cooling holes each formed between the adjacent cylinder bores and extending from the piston insertion end surface in an axial direction of the cylinder block.

6. 发明授权

US10683855B2 Method for operating an axial piston machine of swashplate design 有权
公开(公告)号：US10683855B2
公开(公告)日：2020-06-16
申请号：US15809262
申请日：2017-11-10
申请人： Robert Bosch GmbH
发明人： Paul Zeman , Adrian Trachte , Daniel Seiler-Thull , Martin Wegscheider , Peter Altermann , Andreas Kugi , Wolfgang Kemmetmueller
IPC分类号： F04B1/295 , G05B13/02 , F04B1/146 , F04B49/08 , F04B1/324 , F04B49/00 , F04B1/2078 , F04B49/06 , F04B1/20 , F04B49/20 , F03C1/40 , F03C1/06 , G05B13/04
摘要： A method for operating an axial piston machine of swashplate design, in which a swashplate is settable by means of an adjustment device, and in which a controlled variable of the axial piston machine is regulated by predetermining a manipulated variable. Under the assumption of a constant intended value of the controlled variable, a future profile of the controlled variable is ascertained using a model of the axial piston machine in which respective current values of at least one operating variable of the axial piston machine, which comprises the controlled variable, and a current value of the manipulated variable are taken into account. A value to be set for the manipulated variable is ascertained and set taking into account the future profile of the controlled variable.

7. 发明授权

US10598167B2 Semispherical shoe for swash plate compressor and swash plate compressor 有权
公开(公告)号：US10598167B2
公开(公告)日：2020-03-24
申请号：US15328204
申请日：2015-07-22
申请人： NTN CORPORATION
发明人： Takuya Ishii , Satoru Fukuzawa , Hirohisa Abe , Akihiro Oomori
IPC分类号： F04B27/08 , F04B1/20 , F04B1/14 , F01B3/00 , F04B27/10 , F04B1/2092 , F04B1/2085 , F04B1/148
摘要： A swash plate compressor in which a lubricating film is not formed on a sliding contact surface of the swash plate and the piston owing to the use of the semispherical shoe. The semispherical shoe (4) is subjected to sliding contact with the swash plate of the swash plate compressor and the piston thereof. A base material (5) consists of a metallic member having a resin layer (6b) formed on a surface of a planar part (4b) that is subjected to sliding contact with the swash plate. A resin layer (6a) is formed on a surface of a spherical part (4a) to be subjected to sliding contact with the piston. The resin layer (6a) and the resin layer (6b) are integral with each other. At least one portion of the base material (5) is exposed.

8. 发明授权

US10590920B2 Pump device 有权
公开(公告)号：US10590920B2
公开(公告)日：2020-03-17
申请号：US14930738
申请日：2015-11-03
申请人： Danfoss A/S
发明人： Welm Friedrichsen , Lars Martensen , Frank Holm Iversen , Palle Olsen , Stig Kildegaard Andersen
IPC分类号： F04B1/22 , F04B53/10 , F04B1/20 , F04B1/2021
摘要： A pump device (1) is provided comprising: a shaft (2), rotor means (3a, 3b) fixed to said shaft (2) in rotational direction, said rotor means (3a, 3b) having pressure chambers (5a, 5b) the volume of which varying during a rotation of said rotor means (3a, 3b), port plate means (15a, 15b) having a through going opening (16a, 16b) for each of said pressure chambers (5a, 5b) and being connected to said rotor means (3a, 3b) in rotational direction, and valve plate means (17a, 17b) cooperating with said port plate means (15a, 15b). It is intended to pressurize a high volume of fluid, in particular water, within a limited space. To this end said rotor means (3a, 3b) comprise a first rotor (3a) and at least a second rotor (3b), both rotors being fixed to said shaft (2) in rotational direction, said first rotor (3a) having at least a first pressure chamber (5a) and said second rotor (3b) having at least a second pressure chamber (5b), said port plate means (15a, 15b) having a first port plate (15a) and at least a second port plate (15b), said first port plate (15a) having a through going opening (16a) for said first pressure chamber (5a) and being connected to said first rotor (3a) in rotational direction, said second port plate (15b) having a through going opening (16b) for said second pressure chamber (5b) and being connected to said second rotor (3b) in rotational direction, said valve plate means (17a, 17b) having a first valve plate (17a) and at least a second valve plate (17b), said first valve plate (17a) cooperating with said first port plate (15a), and said second valve plate (17b) cooperating with said second port plate (15b), wherein at least one of said first rotor (3a) and said second rotor (3b) comprises force generating means (19) pressing said second port plate (15b) against said second valve plate (17b) even in absence of hydraulic pressure in said second pressure chamber (5b).

9. 发明授权

US10584690B2 Hydrostatic axial piston machine 有权
公开(公告)号：US10584690B2
公开(公告)日：2020-03-10
申请号：US16058676
申请日：2018-08-08
申请人： Robert Bosch GmbH
发明人： Joachim Roehm
IPC分类号： F04B1/20 , F04B1/2085 , F03C1/06 , F03C1/40 , F04B1/324
摘要： A hydrostatic axial piston machine includes a housing and a pivot cradle. At least one slide bearing of the pivot cradle on a high-pressure side is hydrostatically relieved. The slide bearing includes one or two pairs of relief grooves. A relief pressure field develops about and between the one or two pairs of relief grooves as the grooves are supplied with relief pressure medium on one side and are closed at their outer ends. An optional slide bearing on a low-pressure side has one or two limiting grooves which delimit the relief pressure field there, as the limiting grooves are open at their outer ends.

10. 发明申请

US20190323489A1 Axial Piston Machine with Pressure Relief in the Through Drive Space 审中-公开
公开(公告)号：US20190323489A1
公开(公告)日：2019-10-24
申请号：US16381635
申请日：2019-04-11
申请人： Robert Bosch GmbH
发明人： David Breuer , Timo Nafz
IPC分类号： F04B1/30 , F03C1/40 , F03C1/06 , F04B1/20
摘要： A swashplate-type axial piston machine includes a housing, a first pivot bearing received in the housing, a drive shaft rotatably mounted in respect of an axis of rotation, a cylinder drum, a control plate, a third control aperture in the plate, and a first channel arranged in the housing. The first pivot bearing delimits a first and second housing space from one another. The drum and the plate are arranged in the first housing space. The plate has at least a first and at least a second control aperture. The first aperture is in fluidic exchange connection with a first fluid connection on the housing. The second aperture is in fluidic exchange connection with a second fluid connection on the housing. The third aperture is arranged in the peripheral direction between a first and a second aperture. The first channel fluidically connects the third aperture to the second housing space.

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