EP3289227B1 - Hydraulic accumulator - Google Patents
Hydraulic accumulator Download PDFInfo
- Publication number
- EP3289227B1 EP3289227B1 EP16716005.0A EP16716005A EP3289227B1 EP 3289227 B1 EP3289227 B1 EP 3289227B1 EP 16716005 A EP16716005 A EP 16716005A EP 3289227 B1 EP3289227 B1 EP 3289227B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- hydraulic accumulator
- housing
- accumulator
- guide
- 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.)
- Active
Links
- 239000012530 fluid Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 description 14
- 239000007789 gas Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000002650 laminated plastic Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/405—Housings
- F15B2201/4056—Housings characterised by the attachment of housing components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/60—Assembling or methods for making accumulators
- F15B2201/605—Assembling or methods for making housings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/60—Assembling or methods for making accumulators
- F15B2201/61—Assembling or methods for making separating means therefor
Description
Die Erfindung betrifft einen Hydrospeicher in der Form eines Kolbenspeichers, mit den Merkmalen im Oberbegriff von Anspruch 1.The invention relates to a hydraulic accumulator in the form of a piston accumulator, with the features in the preamble of
Hydrospeicher sind im Stand der Technik zum Beispiel durch die
Die
Die
In der
Weitere Hydrospeicher gehen aus der
In Anbetracht dessen, dass aufgrund der vielfältigen Einsatzmöglichkeiten Hydrospeicher in hohen Stückzahlen herzustellen sind, stellt die Höhe der anfallenden Fertigungskosten einen wirtschaftlich äußerst bedeutsamen Faktor dar. Im Hinblick hierauf liegt der Erfindung die Aufgabe zugrunde, einen Hydrospeicher der eingangs genannten Gattung zur Verfügung zu stellen, der besonders rationell und kostengünstig herstellbar ist und sich darüber hinaus durch ein besonders günstiges Betriebsverhalten auszeichnet.In view of the fact that hydraulic accumulators have to be produced in large numbers due to the wide range of possible uses, the amount of the production costs incurred represents an extremely important economic factor. which can be produced particularly efficiently and inexpensively and is also characterized by particularly favorable operating behavior.
Erfindungsgemäß ist diese Aufgabe durch einen Hydrospeicher gelöst, der die Merkmale des Patentanspruchs 1 in seiner Gesamtheit aufweist.According to the invention, this object is achieved by a hydraulic accumulator which has the features of
Gemäß dem kennzeichnenden Teil des Anspruchs 1 besteht eine wesentliche Besonderheit der Erfindung darin, dass das Kolbenteil als Tiefziehteil ausgebildet ist und dass zur Festlegung des Laufrohrs der Endrand des Deckelteils innenseitig einen Sitz für das Laufrohr mit einer Toleranzhülse und eine O-Ring-Dichtung aufweist. Mit geringem Aufwand an Materialkosten lässt sich dadurch das Kolbenteil rationell und mit geringem Kostenaufwand fertigen. Die Gestaltung als Tiefziehteil führt zudem zu einem vergleichsweise geringen Kolbengewicht und dadurch wegen der geringen Massenträgheit zu einem günstigen Betriebsverhalten.According to the characterizing part of
In besonders vorteilhafter Weise kann das Kolbenteil in ein Führungsteil und ein domartiges Trogteil unterteilt sein, das der Vergrößerung des Gasarbeitsraumes auf der Gasseite des Speichers dient, wobei eine druckausgeglichene Trennfläche zwischen den beiden Medienräumen im Betrieb des Speichers durch das Trogteil ausgebildet ist. Bei dieser Bauform steht in vorteilhafter Weise ein besonders großer Anteil des Gesamtvolumens des Speichergehäuses als Gasvolumen zur Verfügung.In a particularly advantageous manner, the piston part can be divided into a guide part and a dome-like trough part, which is used to enlarge the gas working space on the gas side of the storage tank, with a pressure-balanced separating surface between the two media spaces during operation of the storage tank being formed by the trough part. With this design, a particularly large proportion of the total volume of the storage housing is advantageously available as gas volume.
Das Kolbenteil kann außenumfangsseitig mit durchgehend umlaufenden, nutartigen Vertiefungen für die Aufnahme von Dicht- und Führungsbändern versehen sein. Bei einem als Tiefziehteil hergestellten Kolbenteil können die jeweiligen nutartigen Vertiefungen auf besonders vorteilhafte und rationelle Weise durch ein Rollierverfahren erhalten sein, das in besonders rationeller Weise als zusätzlicher Umformschritt in Verbindung mit dem Tiefziehen durchgeführt werden kann.The piston part can be provided on the outer circumference with continuously encircling, groove-like depressions for receiving sealing and guide bands. In the case of a piston part produced as a deep-drawn part, the respective groove-like depressions can be obtained in a particularly advantageous and rational manner by a roller burnishing process, which can be carried out in a particularly efficient manner as an additional forming step in connection with the deep-drawing.
Mit besonderem Vorteil kann die Anordnung hierbei so getroffen sein, dass eine der nutartigen Vertiefungen für die Aufnahme des Führungsbandes an einem freien Endbereich des Kolbenteils innerhalb des Führungsteils angeordnet ist, wobei eine weitere zweite nutartige Vertiefung der Aufnahme des Dichtbandes dient und im Bereich des Übergangs zwischen dem Führungs- und dem Trogteil entweder am Führungs- oder am Trogteil angeordnet ist. Durch den axialen Abstand zwischen Führungs- und Dichtband ist dadurch eine besonders günstige, kippsichere Führung des Kolbenteils gewährleistet.With particular advantage, the arrangement can be made such that one of the groove-like depressions for receiving the guide band is arranged on a free end area of the piston part within the guide part, with a further second groove-like depression serving to accommodate the sealing band and in the area of the transition between the guide and the trough part is arranged either on the guide or on the trough part. The axial distance between the guide band and the sealing band ensures particularly favorable, tilt-proof guidance of the piston part.
Bei der Herstellung als Tiefziehteil ist in vorteilhafter Weise die Wandstärke des als Hohlkolben konzipierten Kolbenteils über dessen axiale Erstreckung im Wesentlichen gleich.When manufacturing as a deep-drawn part, the wall thickness of the piston part designed as a hollow piston is advantageously essentially the same over its axial extent.
Für eine besonders sichere Führung des Kolbenteils ist die Länge des zylindrischen Führungsteils vorzugsweise gleich oder größer als die Hälfte des Durchmessers dieses Führungsteils.For a particularly secure guidance of the piston part, the length of the cylindrical guide part is preferably equal to or greater than half the diameter of this guide part.
Als Tiefziehteil kann das Kolbenteil aus einem Feinkornblech, insbesondere aus einem Edelstahlmaterial oder einer AlMg-Legierung, oder aus einem anderen für ein Tiefziehverfahren geeigneten metallischen Werkstoff gebildet sein. Das Kolbenteil ist in einem Hohlrohr innerhalb des Speichergehäuses in jeder seiner möglichen Verfahrstellungen geführt. Bei einer derartigen Bauweise, wie sie bei einem als nachveröffentlichter Stand der Technik in der Patentanmeldung
Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:
- Fig. 1 und 2
- Längsschnitte eines Blech-Tiefziehteils, wobei in
Fig. 1 die durch Ziehen gebildete Vorform und inFig. 2 die nach durchgeführtem Rollieren gebildete Fertigform des Kolbenteils des erfindungsgemäßen Hydrospeichers gezeigt ist; - Fig. 3
- einen gegenüber einer praktischen Ausführungsform um den
Faktor 3 verkleinert und verkürzt gezeichneten Längsschnitt eines nicht erfindungsgemäßen Hydrospeichers; und - Fig. 4 und 5
- der
Fig. 3 entsprechende Längsschnitte eines ersten bzw. zweiten Ausführungsbeispiels der Erfindung.
- Figs. 1 and 2
- Longitudinal sections of a deep-drawn sheet metal part, with in
Fig. 1 the preform formed by drawing and inFig. 2 the finished shape of the piston part of the hydraulic accumulator according to the invention, formed after the roller burnishing has been carried out, is shown; - Fig. 3
- a compared to a practical embodiment reduced by a factor of 3 and shortened drawn longitudinal section of a hydraulic accumulator not according to the invention; and
- Figures 4 and 5
- the
Fig. 3 corresponding longitudinal sections of a first and second embodiment of the invention.
Das in
Das Speichergehäuse kann aber auch anders aufgebaut sein, beispielsweise in Form eines sogenannten Liners, der zumindest teilweise aus Kunststofflaminatwerkstoffen gewickelt ist.However, the storage housing can also be constructed differently, for example in the form of a so-called liner which is at least partially wound from plastic laminate materials.
Das Gehäuse-Deckelteil 5 hat die Form einer Schale mit konkav geformter Innenseite 13 und ist, als Verschlussteil des Gehäuses 1, mittels einer Umbördelung 15 mit dessen Öffnungsrand verbunden, wobei ein O-Ring 17 in einer am Rand des Deckelteils 5 gebildeten Ringnut 19 die Abdichtung bildet. Konzentrisch zur Längsachse 9 ist am Deckelteil 5 ein Fluidanschluss 21 für eine betreffende Arbeitsflüssigkeit, wie Hydrauliköl, vorgesehen. Anschlussarmaturen am Fluidanschluss 21 wie auch am Füllanschluss 11 sind dem Stand der Technik entsprechend ausgebildet.The
Als Trennelement zur Separierung der Medienräume, nämlich des Gasarbeitsraums 23 vom Fluid-Arbeitsraum 25, ist im Gehäuse-Hauptteil 3 ein Kolbenteil 27 axial frei bewegbar geführt. Dieses Kolbenteil 27 ist durch ein einstückiges Tiefziehteil gebildet, wobei ein für das Tiefziehverfahren geeignetes Feinkornblech vorgesehen ist, beispielsweise eine AlMg-Legierung oder ein Edelstahlmaterial. Die
Bei der freien Bewegbarkeit des Kolbenteils 27 im Speichergehäuse 1 ist die durch das Trogteil 31 gebildete Trennfläche 33 zwischen Gas-Arbeitsraum 23 und Fluid-Arbeitsraum 25 druckausgeglichen. Das Trogteil 31, ebenso wie das Führungsteil 29, können daher mit geringerer Stärke ausgebildet sein, so dass das Kolbenteil 27 ein Tiefziehteil mit geringem Baugewicht darstellt und die entsprechend geringe Massenträgheit zu einem günstigen Betriebsverhalten, beispielsweise bei einem Einsatz als Pulsationsdämpfer, führt.With the free mobility of the
Zur Bildung einer Kolbenführung und Kolbenabdichtung ist das Kolbenteil 27 außenumfangsseitig mit durchgehend umlaufenden vertieften Nuten 35 und 37 versehen. Diese Nuten 35, 37 sind jeweils durch Rollieren der Vorform ausgebildet. Die in der Figur obenliegende Nut 35 befindet sich am Übergang zwischen dem Führungsteil 29 und dem Trogteil 31 und bildet den Sitz für einen Dichtring 39. Die andere, am unteren Ende des Führungsteils 29 vorgesehene Nut 37 nimmt ein weiteres Dichtelement in Form eines Führungsbandes 41 auf.To form a piston guide and piston seal, the
Bei dem Ausführungsbeispiel von
Der Hydrospeicher des ersten erfindungsgemäßen Ausführungsbeispiels von
Da die Funktion der Führung des Kolbenteils 27 vom Laufrohr 47 übernommen ist, ist keine Oberflächenbearbeitung der Innenseite des Gehäuse-Hauptteils 3 zur Bildung einer Gleitfläche erforderlich, so dass das Speichergehäuse 1 besonders kostengünstig herstellbar ist. Ein weiterer besonderer Vorteil besteht darin, dass die Baueinheit aus Laufrohr 47 und Kolbenteil 27 vorgefertigt als Modul oder Baustein für unterschiedliche Speicherbauweisen und -größen eingesetzt werden kann. Gegebenenfalls können, bei gleichem Rohrdurchmesser und baugleichem Kolbenteil 27, unterschiedliche Rohrlängen für unterschiedliche Längen des Speichergehäuses 1 vorgesehen sein.Since the function of guiding the
Das Ausführungsbeispiel von
Claims (11)
- Hydraulic accumulator, in the form of a piston accumulator, in which a piston part (27) separates two media chambers (23, 25) inside an accumulator housing (1) from one another, the piston part (27) being guided in a hollow tube or track (47) inside the accumulator housing (1) in each of its possible movement positions, and the track (47) being fixed with its upper end on a lid part (5) of the accumulator housing (1), characterised in that the piston part (27) is designed as a deep-drawn part, and in that, to fix the track (47), the inside of the end edge of the lid part (5) comprises a seat for the track (47) with a tolerance sleeve (49) and an O-ring seal (51).
- Hydraulic accumulator according to claim 1, characterised in that one media chamber (23, 25) is a gas working chamber (23) and the other media chamber (25) is a fluid working chamber (25), and in that the piston part (27) is sub-divided into a guide part (29) and a dome-shaped trough part (31), which serves to expand the gas working chamber (23) on the gas side of the accumulator, and in that a pressure-compensated separating surface (33) between the two media chambers (23, 25) is formed by the trough part (31) when the accumulator is operating.
- Hydraulic accumulator according to claim 2, characterised in that the trough part (31) of the piston part (27) comprises a dome-shaped curvature, which is adapted to a concave curvature of the inside (13) of the lid part (5) of the accumulator housing (1) in such a way that, in the one end position of the piston part (27) in which there is no fluid pressure in the fluid working chamber (25) of the accumulator housing (1), the trough part of the piston part (27) is in full surface contact with the inside (13) of the lid part (5).
- Hydraulic accumulator according to any one of the preceding claims, characterised in that the accumulator housing (1) comprises a main housing part (3) next to the lid part (5) and in that the track (47) for the piston part (27) is held at a distance from the inside of this main part (3).
- Hydraulic accumulator according to claim 4, characterised in that the track (47) is supported at its lower end on the housing main part (3) by means of a retaining ring (53), which is preferably made from plastics material, with passages.
- Hydraulic accumulator according to any one of the preceding claims, characterised in that the piston part (27) is furnished on its outer circumference with continuous circumferential groove-like depressions (35, 37) to receive sealing (39) and guide tapes (41).
- Hydraulic accumulator according to claim 6, characterised in that the respective groove-like depression (35, 37) is achieved by a rolling process.
- Hydraulic accumulator according to either claim 6 or claim 7 and either claim 2 or claim 3, characterised in that one of the groove-like depressions (37) for receiving the guide tape (41) is arranged on a free end region of the piston part (27) inside the guide part (29) and a further second groove-like depression (35) is used to receive the sealing tape (39) and is arranged in the region of the transition between the guide part (29) and the trough part (31) either on the guide part (29) or on the trough part (31).
- Hydraulic accumulator according to any one of the preceding claims, characterised in that the wall thickness of the piston part (27), which is designed as a hollow piston, is substantially the same over its axial extension.
- Hydraulic accumulator according to claim 2 or according to any one of claims 3 to 9, if these are dependent on claim 2 , characterised in that the axial length of the cylindrical guide part (29) is greater than or equal to half the diameter of said guide part (29).
- Hydraulic accumulator according to any one of the preceding claims, characterised in that the piston part (27), which is designed as a deep-drawn part, is made from a fine-grained metal sheet, in particular from a stainless steel material or an AIMg alloy.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015005395.7A DE102015005395A1 (en) | 2015-04-28 | 2015-04-28 | hydraulic accumulator |
PCT/EP2016/000603 WO2016173697A1 (en) | 2015-04-28 | 2016-04-13 | Hydraulic accumulator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3289227A1 EP3289227A1 (en) | 2018-03-07 |
EP3289227B1 true EP3289227B1 (en) | 2021-09-29 |
Family
ID=55750370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16716005.0A Active EP3289227B1 (en) | 2015-04-28 | 2016-04-13 | Hydraulic accumulator |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180112681A1 (en) |
EP (1) | EP3289227B1 (en) |
JP (1) | JP6820276B2 (en) |
CN (1) | CN107532616A (en) |
DE (1) | DE102015005395A1 (en) |
WO (1) | WO2016173697A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018007279A1 (en) | 2018-09-14 | 2020-03-19 | Hydac Technology Gmbh | Bellows accumulator |
WO2020243739A1 (en) * | 2019-05-24 | 2020-12-03 | Thermo Kevex X-Ray Inc. | Pressure regulator for x-ray apparatus |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2417873A (en) * | 1944-05-12 | 1947-03-25 | New York Air Brake Co | Accumulator |
US2829672A (en) * | 1955-03-23 | 1958-04-08 | Superior Pipe Specialties Co | Accumulator |
FR1299239A (en) * | 1961-08-28 | 1962-07-20 | Greer Hydraulics Inc | Closed-shell piston accumulator at one end |
DE3728555A1 (en) * | 1987-08-27 | 1989-03-09 | Kloeckner Humboldt Deutz Ag | Piston accumulator for hydraulic oil |
CN1179139C (en) * | 1999-07-02 | 2004-12-08 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Piston for hydraulic pressure chamber |
DE10310427A1 (en) | 2003-03-11 | 2004-09-30 | Hydac Technology Gmbh | hydraulic accumulator |
DE102005015262A1 (en) * | 2005-04-04 | 2006-10-05 | Robert Bosch Gmbh | Pressurized medium accumulator for electronically slip-regulated vehicle brake assembly, has piston with gasket that divides accumulator into separate chambers, where piston is single-piece chipless component made of sheet metal material |
CN201661637U (en) * | 2010-04-28 | 2010-12-01 | 浙江万向系统有限公司 | Shock absorber provided with anti-foaming device |
CN201723513U (en) * | 2010-05-24 | 2011-01-26 | 浙江万向精工有限公司 | Improved energy accumulator |
DE102010062267A1 (en) * | 2010-12-01 | 2012-06-06 | Robert Bosch Gmbh | Hydraulic unit of a hydraulic vehicle brake system |
US20120273076A1 (en) * | 2011-04-28 | 2012-11-01 | Robert Bosch Gmbh | Compact hydraulic accumulator |
CN203570708U (en) * | 2013-10-29 | 2014-04-30 | 北京精密机电控制设备研究所 | Inner surface strengthening titanium alloy hydraulic piston type energy accumulator |
DE102014000380A1 (en) | 2014-01-14 | 2015-07-16 | Hydac Technology Gmbh | memory device |
-
2015
- 2015-04-28 DE DE102015005395.7A patent/DE102015005395A1/en not_active Withdrawn
-
2016
- 2016-04-13 EP EP16716005.0A patent/EP3289227B1/en active Active
- 2016-04-13 CN CN201680024446.5A patent/CN107532616A/en active Pending
- 2016-04-13 US US15/569,849 patent/US20180112681A1/en not_active Abandoned
- 2016-04-13 WO PCT/EP2016/000603 patent/WO2016173697A1/en active Application Filing
- 2016-04-13 JP JP2017556936A patent/JP6820276B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3289227A1 (en) | 2018-03-07 |
CN107532616A (en) | 2018-01-02 |
WO2016173697A1 (en) | 2016-11-03 |
JP2018514719A (en) | 2018-06-07 |
JP6820276B2 (en) | 2021-01-27 |
DE102015005395A1 (en) | 2016-11-03 |
US20180112681A1 (en) | 2018-04-26 |
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