EP1636459A1 - Longitudinally adjustable reversible axial piston machine - Google Patents
Longitudinally adjustable reversible axial piston machineInfo
- Publication number
- EP1636459A1 EP1636459A1 EP04724008A EP04724008A EP1636459A1 EP 1636459 A1 EP1636459 A1 EP 1636459A1 EP 04724008 A EP04724008 A EP 04724008A EP 04724008 A EP04724008 A EP 04724008A EP 1636459 A1 EP1636459 A1 EP 1636459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow cylinder
- piston
- actuating
- machine according
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F01B3/0035—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
- F01B3/0038—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons inclined to main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
- F01B3/0064—Machine housing
- F01B3/0067—Machine housing cylinder barrel bearing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
Definitions
- the invention relates to a reversible axial piston machine with an adjusting device for adjusting the swivel angle of a swivel cradle of the reversible axial piston machine in both swivel directions.
- the volume of hydraulic fluid delivered in one rotation of the drive shaft of an axial piston machine is dependent on the lifting height of the cylinders arranged in a cylinder drum of an axial piston machine during a compression or suction process.
- the lifting height is set in relation to the axial alignment of the drive axis by inclining the inclined surface of a swivel cradle on which the individual cylinders are supported during their rotational movement about the drive axis.
- the setting angle of the inclined surface for the axial alignment of the drive axis is adjusted by an adjusting device.
- the adjusting device In principle, there are two embodiments for the arrangement of the adjusting device in relation to the arrangement of the drive axis of the axial piston machine.
- the adjusting device In the transverse adjustment, the adjusting device carries out a translational movement for adjusting the pivoting cradle transversely to the arrangement of the drive axis of the axial piston machine.
- the adjusting device carries out a translational movement for adjusting the swivel cradle in the longitudinal direction of the drive axis of the axial piston machine.
- the longitudinal adjustment is preferable to the transverse adjustment, since this Variant has a smaller construction volume.
- a not insignificant problem of adjusting devices is the exact setting of the zero position.
- the pivoting cradle In the uncontrolled operating state of the adjusting device, for example when there is no signal pressure in a pressure-controlled adjusting device — depressurized operating state — the pivoting cradle has an adjusting angle of exactly zero degrees when the adjusting device is set to the zero position.
- the inclined surface is exactly perpendicular to the longitudinal axis of the drive shaft. It is not possible for any of the pistons in all cylinders of the cylinder drum to perform a lifting movement.
- DE 37 14 888 AI shows a reversible axial piston machine with an adjusting device that works according to the longitudinal adjustment variant.
- the zero position of the swivel cradle in the uncontrolled operation of the axial piston machine cannot be adjusted and is undefined.
- the adjustment angle actually set on the swivel cradle in this axial piston machine therefore generally does not exactly correspond to the specified adjustment angle.
- the actual displacement volume thus generally deviates from the predefined displacement volume.
- the invention is therefore based on the object of developing the reversible axial piston machine with longitudinal adjustment in accordance with the features according to the preamble of claim 1 in such a way that a displacement volume in the ' uncontrolled state is certainly not present.
- the object of the invention is achieved by a reversible axial piston machine with the features of claim 1.
- a zero position adjusting device is provided in the adjusting device according to claim 1.
- the advantage of this zero position adjusting device can be seen in the fact that the zero position of the inclined surface can be set precisely and without play in the uncontrolled operation of the axial piston machine.
- Another advantage of the zero position adjusting device lies in the use of a single compression spring, which is tensioned on the adjusting rod between two spring plates, and the adjusting piston, which can be displaced in the adjusting device, is subjected to the same pretensioning force in both adjusting directions. It is thus possible to position the actuating piston and the pivoting cradle coupled via a positive connection to the actuating piston in the adjustment process of the zero position determination with a prestressing force determined by the spring constant of the compression spring in both adjusting and pivoting directions.
- An elaborate coordination of two oppositely acting compression springs, which in such applications usually generate a prestressing force for one direction of adjustment, with regard to spring constants of the same size and thus prestressing forces of the same size, can be dispensed with here.
- the claimed reversible axial piston machine and the associated adjusting device also have the advantage that they can be limited by means of a second adjusting rod, which is also led out of the adjusting device or the axial piston machine, with respect to the adjustment path of the adjusting piston or the adjustment angle of the pivoting cradle.
- the adjusting device claimed has the advantage that, due to its hollow cylindrical design, the adjusting piston, the zero position adjusting device and others can be assembled and disassembled relatively easily components located within the hollow cylinder of the adjusting device is possible.
- Figure 1 is a cross-sectional view of an axial piston machine according to the invention with an adjusting device according to the invention.
- FIG. 2 shows a cross-sectional illustration of an adjusting device according to the invention
- Fig. 3 is a cross-sectional view of another
- FIG. 4 shows a three-dimensional view of an axial piston machine according to the invention with an adjusting device according to the invention connected via a positive connection.
- FIG. 1 shows a cross section of a reversible axial piston machine 1 according to the invention.
- This consists of a drive shaft 4 mounted in an axially aligned recess 2 of the housing 3.
- a cylinder drum 5 is arranged on the drive shaft 4 in a rotationally fixed manner, in which a plurality of cylinder recesses are arranged at equal distances from one another on a concentric circle to the longitudinal axis 7 of the drive shaft 4.
- a piston 6 is slidably guided, which is on the cylinder chamber opposite end has a ball head which is pivotally mounted in a sliding shoe and is supported against an inclined surface 8.
- the pivoting cradle 9 and with it the inclined surface 8 can be pivoted in relation to a zero position axis 10, which is oriented at a right angle to the axis of rotation 7 of the cylinder drum 5, by positive adjustment angle ⁇ 1 and negative adjustment angle ⁇ .2 to the zero position axis 10.
- the adjusting device 12 the cross section of which, in addition to the illustration in FIG. 1, is also shown in FIG. 2 on a slightly enlarged scale, consists of a hollow cylinder 13 serving as a housing and having a first step 14.
- the second opening 18 of the hollow cylinder 13 opposite the first opening 15 is closed off with a closure cover 19.
- the closure cover 19 has an annular web 20. The outer diameter of the annular web
- the inside diameter of the annular web 20 of the sealing cover 19 corresponds to the inside diameter of the hollow cylinder 13 in
- closure cover 19 is with an annular web 20 in the interior 17 of the closure cover 19
- Hollow cylinder 13 introduced that a positive connection between the hollow cylinder 13 and the
- annular grooves 22 On the inner lateral surface 21 of the hollow cylinder 13 between the first opening 15 and the first step 14 and on the inner circumferential surface 27 of the annular web 20 of the closure cover 19 are annular grooves 22 in which guide rings 23 made of brass, for example, are arranged. These guide rings 23 serve as guide bearings for the actuating piston 24, which is mounted in the interior 17 of the hollow cylinder 13 centrally to the longitudinal axis 11 and is displaceable in the direction of the longitudinal axis 11.
- the actuating piston 24 essentially has a hollow cylindrical geometry. Approximately at half the cylinder height of the hollow cylindrical actuating piston 24, the actuating piston 24 has a flange-shaped extension 26 on its outer lateral surface 25. Since the width of this flange-shaped extension 26 corresponds to the width of the first step 14 of the hollow cylinder 13, the flange-shaped extension 26 of the actuating piston 24 is in contact with the inner lateral surface 27 of the hollow cylinder 13 between the first step 14 and the second opening 18.
- a first actuating pressure chamber 28 and a second actuating pressure chamber 29 are formed in the interior 17 of the hollow cylinder 13.
- First side surface 30 of the flange-shaped extension 26 of the actuating piston 24 serves as an engagement surface for an actuating pressure guided through the first actuating pressure opening 31 in the wall of the hollow cylinder 13 into the first actuating pressure chamber 28 for displacing the actuating piston 24 along its longitudinal axis 11 in the direction of the second opening 18 of the hollow cylinder 13.
- the second side surface 32 of the flange-shaped extension 26 of the actuating piston 24, which is connected to the second actuating pressure chamber 29, serves as an engagement surface for an actuating device which is guided through the second actuating pressure opening 33 in the wall of the hollow cylinder 13 into the second actuating pressure chamber 29 jerk to the displacement of the actuating piston 24 along its longitudinal axis 32 in the direction of the first opening 15 of the hollow cylinder 13.
- first and second actuating pressure chambers 28 and 29 against hydraulic fluid ', in the area of the inner lateral surfaces 21 and 27 of the hollow liner 13, the inner lateral surface 22 and the outer lateral surface 34 of the annular web 20 of the closure cover 19 and the end surface 35 of the flange-shaped extension 26 of the actuating piston 24 sealing rings 36 provided in grooves.
- the hollow cylindrical actuating piston 24 has a multiply stepped recess 37, the largest third opening 38 of which points in the direction of the second opening 18 of the hollow cylinder 13.
- a first adjustment rod 39 is guided into the multiply stepped recess 37 along the longitudinal axis 11 of the actuating piston 24.
- This first adjusting rod 39 is led out of the adjusting device 12 via a bore 40 in the closure cover 19.
- a first spring plate 43 and a second spring plate 44 are fixed on the adjusting rod 39 in the area between the second step 42 and the third opening 38 of the recess 37 of the actuating piston 24.
- the first spring plate 43 is fixed on the adjusting rod 39 in that the spring plate 43 is pressed with the pretensioning force of a compression spring package 45 tensioned between the first spring plate 43 and the second spring plate 44 against the inside end face 46 of an end flange 47 fastened to the hollow cylinder end of the adjusting rod 39 becomes-.
- the second spring plate 44 is fixed on the adjusting rod 39 in that the Spring plate 44 is pressed with the prestressing force of the compression spring package 45 against a sleeve 48 fixed on the adjusting rod 39 between the spring plate 44 and the closure cover 19.
- the sleeve 48 has an annular groove on its inside, in which an annular body 55 is fixed, which is arranged in a groove of the first adjusting rod 39 and is supported on the inside end face 46a of the groove arranged in the adjusting rod 39.
- the sleeve 48 and the position of the groove arranged in the adjusting rod could also be designed such that the spring plate 44 is pressed directly against the annular body 55.
- the compression spring package 45 is composed of the two compression springs 45A and 45B arranged in parallel, so that the compression spring package. 45 a compact design can be achieved.
- a first spring plate 43 with its end face 49 facing away from the compression spring package 45 is in contact with the second step 42 of the recess 37 of the actuating piston 24.
- the second spring plate 44 is in contact with its end face 50 facing away from the compression spring package 45 with a snap ring 51, which is arranged in an annular groove on the inner side surface of the recess 37 of the actuating piston 24 in the vicinity of the third opening 38.
- a second adjustment rod 52 which is guided through a bore 53 in the closure cap 19 into the interior 17 of the hollow cylinder 13, serves as an adjustable limitation for the adjustment path of the actuating piston 24 along its longitudinal axis 32.
- the second adjustment rod 52 can be screwed onto an adjustment nut 54 the thread of the second adjusting rod 52 outside the closure cover 19 can be changed in its position within the interior 17 of the hollow cylinder 13.
- An adjustment of the swivel cradle 19 in the direction of a positive adjustment angle ⁇ l in the sense of a zero point adjustment is carried out by positioning the first adjusting rod 39 in the direction of the second opening 18 of the hollow cylinder 13 by actuating the first adjusting screw 41.
- the zero position adjusting device 32 consisting of the first adjusting rod 19, the compression spring package 45, the first spring plate 43, the second spring plate 44 and the sleeve 48, moved in the direction of the second opening 18 of the hollow cylinder 13.
- the force required for this displacement is provided by the end flange 47 of the adjusting rod 39, which is moved in the direction of the second opening 18 of the hollow cylinder 13, via its inside end face 46 onto the first spring plate 43, from the first spring plate 43 onto the compression spring package 45, and from the compression spring package 45 transferred to the second spring plate 44 and finally from the second spring plate 44 to the snap ring 51 which, positively fixed with the actuating piston 24, displaces the actuating piston 24 in the direction of the second opening 18.
- the pivot cradle 19 is adjusted in the direction of a negative adjustment angle ⁇ 2 in the sense of a zero point adjustment by positioning the first adjustment rod 39 in the direction of the first opening 15 of the hollow cylinder 13 by actuating the first adjustment screw 41. In this way, the zero position device 32 becomes in the direction of the first opening 15 of the hollow cylinder 13 moved.
- the power transmission takes place in this case from the sleeve 48, which is moved via the annular body 55 with the first adjusting rod 39 in the direction of the first opening 15 of the hollow cylinder 13, to the second spring plate 44, from the second spring plate 44 to the compression spring assembly 45, from Compression spring package 45 on the first spring plate 43 and finally from the first spring plate 43 to the second step 42 of the recess 37 of the actuating piston 24.
- the power transmission to the actuating piston 24 causes the actuating piston 24 to be displaced in the direction of the first Opening 15 of the hollow cylinder 13.
- the compression spring package 45 primarily has the task of generating a spring force proportional to the deflection of the actuating piston 24, which counteracts the actuating force which triggers the movement. This restoring spring force is identical for both directions of displacement of the actuating piston 24 due to the use of a single compression spring package 45.
- the spring force of the compression spring assembly 45 also has a certain value in the zero position of the pivoting cradle 9, since the compression spring assembly 45 is held biased between the first spring plate 43 and the second spring plate 44 in each of the positions of the actuating piston 24.
- the displacement of the actuating piston 24 in the direction of the second opening 18 of the hollow cylinder 13 results in the first spring plate 43 on its end face 49 from the second stage 42 of the hollow cylinder 13 a force which is transmitted to the second spring plate 44 via the compression spring package 45 and which leads to a displacement of the second spring plate in the direction of the second opening 18 of the hollow cylinder 13.
- the second spring plate 44 rests with its end face 50 on the sleeve 48 and cannot be displaced in the direction of the second opening of the hollow cylinder 13 due to the local fixation of the adjusting rod 39 and with the sleeve 48.
- the actuating piston 24 is displaced in the direction of the first opening 15 of the hollow cylinder 13. Via the displacement of the actuating piston 24 and thus in the Actuating piston 24 integrated snap ring 51 in the direction of the first opening 15 of the hollow cylinder 13, a force is transmitted to the second spring plate 44, which in turn is transmitted from the second spring plate 44 to the compression spring assembly 45.
- the transmission of the axial movement of the actuating piston 24 along its longitudinal axis 11 into a pivoting movement of the pivoting cradle 9 takes place according to FIG. 4 via a sliding block 56 which is guided in a groove 57 of the adjusting device 12.
- the sliding block 56 has a recess (not shown in FIG. 4) in which a pin (not shown in FIG. 4) shown) is rotatably mounted. This pin is attached to the side surface of a connecting arm 58, which in turn is fixed to the swivel cradle 9.
- the one-dimensional axial movement of the adjusting piston 24 in the adjusting device 12 is consequently converted into a rotary pivoting movement of the pivoting cradle 9 via a one-dimensional sliding movement of the sliding block 56 in the groove 57 of the adjusting device 12 in combination with a rotary movement of the pin in the recess of the sliding block 56.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10325842A DE10325842A1 (en) | 2003-06-06 | 2003-06-06 | Reversible axial piston machine with longitudinal adjustment |
PCT/EP2004/003323 WO2004109060A1 (en) | 2003-06-06 | 2004-03-29 | Longitudinally adjustable reversible axial piston machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1636459A1 true EP1636459A1 (en) | 2006-03-22 |
EP1636459B1 EP1636459B1 (en) | 2007-07-18 |
Family
ID=33494887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04724008A Expired - Fee Related EP1636459B1 (en) | 2003-06-06 | 2004-03-29 | Longitudinally adjustable reversible axial piston machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US7367258B2 (en) |
EP (1) | EP1636459B1 (en) |
KR (1) | KR101138855B1 (en) |
CN (1) | CN1798904B (en) |
DE (2) | DE10325842A1 (en) |
WO (1) | WO2004109060A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009024336A1 (en) * | 2007-08-20 | 2009-02-26 | Robert Bosch Gmbh | Axial piston machine in a swash-plate construction with an actuating device |
US8677886B2 (en) * | 2009-10-26 | 2014-03-25 | Caterpillar Inc. | High response hydraulic actuator |
DE102010026157A1 (en) * | 2010-07-06 | 2012-01-12 | Robert Bosch Gmbh | Hydrostatic machine, in particular axial piston machine |
DE102010062950A1 (en) * | 2010-12-13 | 2012-06-14 | Zf Friedrichshafen Ag | Actuating device for hydrostatic module, has adjusting piston, pivoted lever connected firmly with the cross beam and radial drill arranged in adjusting piston |
US8845303B2 (en) * | 2010-12-22 | 2014-09-30 | Eaton Corporation | Torque control for open circuit piston pump |
DE102011006102A1 (en) * | 2011-03-25 | 2012-09-27 | Zf Friedrichshafen Ag | Adjustment device of a hydrostatic module |
DE102011088364A1 (en) * | 2011-12-13 | 2013-06-13 | Zf Friedrichshafen Ag | Adjusting device for adjusting displacement volume of axial piston unit of hydrostatic module for continuously variable hydrostatic transmission of e.g. agricultural tractor, has cylindrical pin that is moved into hole in sliding ring |
DE102012222936A1 (en) * | 2012-12-12 | 2014-06-12 | Robert Bosch Gmbh | axial piston |
DE102014215024A1 (en) * | 2013-09-06 | 2015-03-12 | Robert Bosch Gmbh | Adjustable in stroke volume hydrostatic axial piston machine, in particular in the stroke volume adjustable hydrostatic Axialkobenmotor |
CN103573616B (en) * | 2013-11-08 | 2016-03-02 | 无锡威孚精密机械制造有限责任公司 | The variable cylinder structure of plunger pump |
JP6248844B2 (en) * | 2014-07-16 | 2017-12-20 | 株式会社豊田自動織機 | Variable displacement piston pump |
DE102014218420A1 (en) * | 2014-09-15 | 2016-03-17 | Robert Bosch Gmbh | Adjustment device for a hydrostatic axial piston machine |
DE102015203962A1 (en) | 2015-03-05 | 2016-09-08 | Robert Bosch Gmbh | Arrangement for sealing and guiding |
US10145396B2 (en) * | 2016-12-15 | 2018-12-04 | Caterpillar Inc. | Energy recovery system and method for hydraulic tool |
DE102017213457A1 (en) * | 2017-08-03 | 2019-02-07 | Robert Bosch Gmbh | Hydrostatic adjusting device for a hydrostatic displacement machine and hydrostatic displacement machine |
DE102018218547A1 (en) * | 2018-10-30 | 2020-04-30 | Robert Bosch Gmbh | Hydrostatic axial piston machine |
DE102020211288A1 (en) * | 2020-02-13 | 2021-08-19 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hydraulic drive system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE40492C (en) | S. MORATH in Ueberlingen | Hydraulic tooth lifter | ||
DE3346000A1 (en) * | 1982-12-21 | 1984-06-28 | Linde Ag, 6200 Wiesbaden | Hydraulic actuating device for a hydrostatic machine |
DE3714888C2 (en) * | 1987-05-05 | 1994-10-06 | Linde Ag | Adjustable axial piston machine |
DE3935800C2 (en) * | 1989-10-27 | 1997-03-27 | Linde Ag | Adjustable swash plate type axial piston machine |
DE4018494A1 (en) * | 1990-06-09 | 1991-12-12 | Teves Gmbh Alfred | METHOD FOR ADJUSTING A PISTON CYLINDER ARRANGEMENT |
US5226349A (en) * | 1992-07-15 | 1993-07-13 | Eaton Corporation | Variable displacement hydrostatic pump and improved gain control thereof |
KR970044601A (en) * | 1995-12-29 | 1997-07-26 | 전성원 | Rotary piston |
DE19755386C2 (en) * | 1997-12-12 | 1999-10-21 | Brueninghaus Hydromatik Gmbh | Hydrostatic machine with a rotatably mounted cylinder drum and an adjustable swivel disc |
DE10037482C1 (en) * | 2000-08-01 | 2002-02-28 | Sauer Danfoss Neumuenster Gmbh | Hydrostatic variable displacement pump with springs located outside the servo cylinder pressure chamber |
-
2003
- 2003-06-06 DE DE10325842A patent/DE10325842A1/en not_active Withdrawn
-
2004
- 2004-03-29 KR KR1020057023437A patent/KR101138855B1/en not_active IP Right Cessation
- 2004-03-29 WO PCT/EP2004/003323 patent/WO2004109060A1/en active IP Right Grant
- 2004-03-29 CN CN2004800153497A patent/CN1798904B/en not_active Expired - Fee Related
- 2004-03-29 US US10/559,514 patent/US7367258B2/en not_active Expired - Fee Related
- 2004-03-29 DE DE502004004376T patent/DE502004004376D1/en not_active Expired - Lifetime
- 2004-03-29 EP EP04724008A patent/EP1636459B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004109060A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1798904B (en) | 2011-04-20 |
DE10325842A1 (en) | 2005-01-05 |
DE502004004376D1 (en) | 2007-08-30 |
CN1798904A (en) | 2006-07-05 |
KR20060025548A (en) | 2006-03-21 |
US7367258B2 (en) | 2008-05-06 |
WO2004109060A1 (en) | 2004-12-16 |
KR101138855B1 (en) | 2012-05-15 |
US20060123984A1 (en) | 2006-06-15 |
EP1636459B1 (en) | 2007-07-18 |
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