EP1517048B1 - Accumulateur hydropneumatique - Google Patents

Accumulateur hydropneumatique Download PDF

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Publication number
EP1517048B1
EP1517048B1 EP04030566A EP04030566A EP1517048B1 EP 1517048 B1 EP1517048 B1 EP 1517048B1 EP 04030566 A EP04030566 A EP 04030566A EP 04030566 A EP04030566 A EP 04030566A EP 1517048 B1 EP1517048 B1 EP 1517048B1
Authority
EP
European Patent Office
Prior art keywords
housing
holding
longitudinal axis
membrane
housing shell
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.)
Expired - Lifetime
Application number
EP04030566A
Other languages
German (de)
English (en)
Other versions
EP1517048A2 (fr
EP1517048A3 (fr
Inventor
Herbert Baltes
Markus Lehnert
Gernot Rupp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydac Technology GmbH
Original Assignee
Hydac Technology GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP1517048A2 publication Critical patent/EP1517048A2/fr
Publication of EP1517048A3 publication Critical patent/EP1517048A3/fr
Application granted granted Critical
Publication of EP1517048B1 publication Critical patent/EP1517048B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • F15B1/125—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery characterised by the attachment means
    • 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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/106—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means characterised by the way housing components are assembled
    • 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
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/12—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means attached at their periphery
    • 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
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • 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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3151—Accumulator separating means having flexible separating means the flexible separating means being diaphragms or membranes
    • 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
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3156—Accumulator separating means having flexible separating means characterised by their attachment
    • 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
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve means
    • 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
    • F15B2201/415—Gas ports
    • 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
    • F15B2201/43—Anti-extrusion means
    • F15B2201/435—Anti-extrusion means being fixed to the separating means

Definitions

  • the invention relates to a hydropneumatic pressure accumulator with a housing formed from at least two interconnected housing shells, which separates the interior of the memory from the outside environment, with a longitudinal axis defining a cross-section and the interior of the housing in two spaces, in particular a gas space and a liquid space , dividing partition in the form of a gas-tight membrane, which is clamped with its peripheral edge region to form a seal to the inner wall of the housing by means of a holding device which has the edge region of the membrane between receiving retaining surfaces and at least one force generating element generating a clamping force between edge region and retaining surfaces, wherein at least one of the retaining surfaces is formed by a wall portion of one of the housing shells, wherein the retaining surfaces extend over their entire surface area to each other equidistant between them a Ringspa lt being formed, which has a constant clear gap width over its axial extent, and wherein the holding surface located on one of the housing shells, with respect to the longitudinal axi
  • Comparable accumulators are known for example from DE 25 34 361 B2. Due to the very tight tolerances, as they are to be observed in the cooperating wall parts at the connecting portion of the housing shells and for the edge region of the membrane contacting surfaces, the installation of the membrane and the assembly of the housing shells designed relatively difficult. Because of the exact fit smallest misalignment or tilt error relative to the longitudinal axis when moving the parts to disturbances of the assembly process or even damage due to misalignment or tilting.
  • a generic hydropneumatic pressure accumulator wherein a separate attachment ring is provided as a holding device for the partition or separation membrane, which clamped between two housing shells makes the determination.
  • the mounting ring as a holding device presses over a flange-like metal ring an end-side membrane bead in the associated receptacle of the lower housing shell of the memory.
  • the housing shells are cylindrical at their mutually facing guide surfaces and thus in abutment with each other.
  • the mounting ring and the lower housing shell extend over a predeterminable area below the Festlegewulstes with mutually parallel retaining surfaces which define an equidistant gap with each other and hold the partition over such a predetermined distance. If the housing shells are brought together during assembly of the known memory, even if the guide and retaining surfaces are precisely machined, a misalignment can occur, which impairs the clamping of the diaphragm and its subsequent fixing in the memory and can make the assembly considerably more difficult.
  • the invention has the object to provide a pressure accumulator of the type mentioned, which is characterized by a particularly simple assembly-enabling design and does not have the disadvantages described in the prior art.
  • This object is achieved by a hydropneumatic accumulator with the features of claim 1 in its entirety.
  • the other housing shell for the collapse with the one housing shell on the inside a funnel-shaped narrowing further guide surface, wherein in the contracted state of the two housing shells, the two guide surfaces in abutment with each other and / or maintain an equidistant distance from one another.
  • the outer holding surface extends in extension and thus the same inclination to its associated guide surface.
  • the inner support surface is parallel to the outer support surface extending arranged offset by one step inwardly to the longitudinal axis of the memory. Due to the pertinent arrangement, the holding surfaces can be formed in meaningful continuation of the guide surfaces, which significantly reduces the production costs.
  • the holding device can be formed directly from the two housing shells and an additional mounting ring can be completely dispensed with. While retaining the advantages of the invention, it is also possible to implement the pertinent arrangement in another embodiment by using a fastening ring, which, however, then increases the number of parts and, consequently, the production costs.
  • each guide surface is dimensioned shorter than the length of each associated holding surface.
  • the preferred range for the angle at which the outer holding surface widens outwardly in a funnel-like manner with respect to the longitudinal axis is 4 ° to 10 °, preferably 5 ° to 6 °.
  • The, relative to the longitudinal axis, inner support surface may be formed, for example, on a plug-in in a housing shell approach the other housing shell. If, in this case, the projection is formed integrally with the other housing shell, then at least one elastic sealing element arranged between at least one holding surface and the edge region of the membrane can be provided as the clamping force between the edge region of the membrane and retaining surfaces.
  • a pressure accumulator designated as a whole by 1 in FIG. 1 has two housing shells 3 and 5 which form the storage housing and which are approximately hemispherical in shape and connected to one another at an interface 7.
  • the housing shells 3 and 5 are gas-tightly connected to each other at the seam 7 by electron beam welding or laser welding.
  • the housing shells 3 and 5 each have an opening 9 or 11, each of which is provided for the attachment of a connection fitting, which is not shown, which connects to a Gasein- andnach Stahl also not shown or hydraulic system manufactures.
  • the interior of the housing is divided by a partition wall in the form of a gas-tight membrane 13 in a gas space 15 located at the top in FIG. 1 and a lower liquid space 17 adjoining the opening 11.
  • the membrane 13 may be formed of an elastomeric material or preferably of a plastic material. It may be a monolayer membrane which consists of a polyamide, for example PA6, or a polyamide blend, such as polyamide polyolefin, or of polyethylene terephthalate, polyethylene naphthalate or polyvinylidene chloride.
  • the above-mentioned plastics as Be provided blocking layer on which a cover layer or multiple cover layers is or are located.
  • the membrane 13 is shown in Fig. 1 in not fully stretched state.
  • a glued to the membrane 13 or molded reinforcement 19 acting in the manner of a valve disk would come to lie over the inner edge of the opening 11 and not at the opening 11 only act sealing, but also prevent depression of the membrane 13 in the opening 11 by the pressure prevailing in the gas space 15 pressure.
  • the reinforcement 19 may also be formed from a material thickening of the membrane 13 itself.
  • Fig. 2 shows the designated in Fig. 1 with II area on a larger scale, so that the details of the design of the edge portion 21 of the membrane 13 and the holding means for the clamping of the diaphragm 13 can be removed.
  • the edge region 21 of the membrane 13 has a bead-like thickening 23 which is received between two retaining surfaces, of which the housing shell 5 associated holding surface with 25 and the housing shell 3 associated holding surface 27 is designated ,
  • the holding surfaces 25 and 27 extend over the entire circumference of the pressure accumulator housing to each other equidistant, so that they form between them an annular gap for receiving the edge region 21 of the membrane 13, which has a constant clearance width D over its axial extent (Fig.
  • Fig. 1 the axis defined by the approximately spherical shape of the housing shells 3 and 5 longitudinal axis of the pressure accumulator 1 is denoted by 29.
  • the defined by this longitudinal axis 29 longitudinal direction of the pressure accumulator is illustrated in Fig. 2 by an auxiliary line 31 which is parallel to the longitudinal axis 29.
  • the holding surface 25 lying outside on the longitudinal axis 29 is inclined at a very acute angle ⁇ to the longitudinal direction indicated by the auxiliary line 31, ie, relative to the longitudinal axis 29.
  • the outer holding surface 25 is therefore part of the lateral surface of a cone whose tip is located on the longitudinal axis 29 of the pressure accumulator.
  • the outer holding surface 25 at the small angle ⁇ which is preferably about 4 ° to 10 °, relative to the longitudinal axis 29 inclined so that the support surface 25 at its upper end in Fig. 2, that is, at its the housing shell 3 facing the end, the largest radial distance from the longitudinal axis 29 has.
  • the housing shell 3 facing the end of the housing shell 5 located in Fig. 1 and 2 below is therefore slightly widened at the edge funnel-like. The inserted into the slightly extended open end of the housing shell 5 end portion of the top in Figs.
  • the one housing shell 5 is provided to its outer end with a slightly funnel-like outwardly extended guide surface 34 for the collapse of the two housing shells 3.5.
  • the other housing shell 3 is also funnel-shaped narrowing provided with a further guide surface 36 for moving together with a housing shell 5 inside, wherein in the contracted state of the two housing shells 3.5, the two guide surfaces 34,36 in abutment with each other.
  • the outer holding surface 25 in extension and thus the same inclination to the associated guide surface 34 is arranged to extend.
  • the inner support surface 27 is in turn arranged offset parallel to the outer support surface 25 by a step 38 inwardly to the longitudinal axis 29 out and the length of each guide surface 34,36 is shorter than the length of each associated support surface 25,27.
  • the one guide surface 34 of the housing shell 5 connects to the free end 32 thereof.
  • the holding device in question for the membrane partition wall can be formed directly from the two housing parts 3,5 or at least partially from an independent mounting ring (not shown), which is in one of the two housing shells 3,5, in particular in the lower housing shell 5, can be used ,
  • the projection 33 is formed integrally with the housing shell 3 located at the top in the figure.
  • the projection 33 forms a rigid connection with the housing shell 5.
  • elastic sealing element 41 is provided in order to generate a clamping force for the clamping and the sealing of the edge region 21 of the membrane 13, as an energy storage element at the end edge 39 of the thickening 23 fitting.
  • elastic sealing element 41 is provided in order to generate a clamping force for the clamping and the sealing of the edge region 21 of the membrane 13, as an energy storage element at the end edge 39 of the thickening 23 fitting.
  • elastic sealing element 41 is provided in the manner of an O-ring between the holding surfaces 25 and 27 and exerts on the end edge 39 of the thickening 23 an axially acting clamping force between a transverse to the support surface 27 extending support surface 43 and the support surface 25 transversely extending support surface 37 acts.
  • the sealing member 41 seals both against the support surface 25 and against the support surface 27 from.
  • the sealing element 41 is glued or molded on the end edge 39 of the thick

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • External Artificial Organs (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (8)

  1. Accumulateur hydropneumatique (1) comportant un boîtier qui est formé d'au moins deux coques de boîtier (3, 5) susceptibles d'être reliées l'une à l'autre et qui sépare de l'environnement extérieur l'intérieur de l'accumulateur, comportant une section transversale qui définit un axe longitudinal (29) ainsi qu'une paroi séparatrice qui divise l'espace intérieur du boîtier en deux chambres, en particulier une chambre à gaz (15) et une chambre à liquide (17), sous forme d'une membrane (13) étanche au gaz dont la zone de bord (21) périphérique est tendue en formant un joint par rapport à la paroi intérieure du boîtier à l'aide d'un dispositif de retenue muni de surfaces de retenue (25, 27) qui reçoivent entre elles la zone de bord (21) de la membrane (13) et d'au moins un élément accumulateur de force (41) qui produit une force de serrage entre la zone de bord (21) et les surfaces de retenue (25, 27), dans cet accumulateur au moins une (25) des surfaces de retenue (25, 27) est formée par une partie de paroi d'une des coques de boîtier (3, 5), les surfaces de retenue (25, 27) sont équidistantes l'une de l'autre sur toute la zone de leur surface pour former entre elles un interstice annulaire dont la largeur intérieure (D) d'interstice est constante sur toute son étendue axiale, et la surface de retenue (25), celle à l'extérieur si on se réfère à l'axe longitudinal (29), qui se trouve sur l'une des (5) coques de boîtier (3, 5) fait partie de la surface latérale d'un cône dont le sommet est placé sur l'axe longitudinal (29) de telle manière que, à son extrémité orientée vers l'autre coque de boîtier (3), cette surface de retenue (25) a l'écart radial maximal par rapport à l'axe longitudinal (29),
    caractérisé en ce que, entre son extrémité libre (32) et l'élément d'étanchéité (41) respectif, au moins la zone d'extrémité (30) de l'une des coques de boîtier (5) a une surface de guidage (34) en entonnoir qui s'élargit vers l'extérieur et qui sert à assembler les deux coques de boîtier (3, 5),
    qu'au moins un élément d'étanchéité (41) élastique est prévu sur au moins une surface de retenue (25, 27) pour produire une force de serrage qui agit sur la zone de bord (21) de la membrane (13),
    que la zone de bord (21) de la membrane (13) comporte un épaississement (23) en bourrelet reçu entre les surfaces de retenue (25, 27)
    et que l'élément d'étanchéité prévu est une bague d'étanchéité (41) élastique qui est en contact avec le bord d'extrémité (39) de l'épaississement (23) ou y est injectée et qui produit une force de serrage entre l'épaississement (23) en bourrelet et des surfaces d'appui (37, 43) formées sur l'une et l'autre des coques de boîtier (5 ou 3) et transversales aux surfaces de retenue (25, 27).
  2. Accumulateur selon la revendication 1, caractérisé en ce que pour assembler la coque de boîtier (5) l'autre coque de boîtier (3) comporte une autre surface de guidage (36) en entonnoir qui se rétrécit vers l'intérieur et que, quand les deux coques de boîtier (3, 5) sont à l'état assemblé, les deux surfaces de guidage (34, 36) sont en contact l'une avec l'autre et/ou sont équidistantes l'une de l'autre.
  3. Accumulateur selon la revendication 1 ou 2, caractérisé en ce que la surface de retenue (25) extérieure prolonge la surface de guidage (34) qui lui est associée et a donc la même inclinaison qu'elle.
  4. Accumulateur selon la revendication 3, caractérisé en ce que la surface de retenue (27) intérieure qui est parallèle à la surface de retenue (25) extérieure est décalée d'un palier (38) vers l'intérieur par rapport à l'axe longitudinal (29) de l'accumulateur (1).
  5. Accumulateur selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de retenue est directement formé à partir des deux coques de boîtier (3, 5) ou au moins en partie à partir d'une bague de fixation qui peut être introduite dans une des deux coques de boîtier (3, 5).
  6. Accumulateur selon la revendication 4 ou 5, caractérisé en ce que la longueur de chacune des surfaces de guidage (34, 36) est moindre que la longueur de chacune des surfaces de retenue (25, 27) associées.
  7. Accumulateur selon l'une des revendications 1 à 6, caractérisé en ce que l'angle (α) du cône qui définit la surface de retenue (25) formée sur l'une des coques de boîtier (5) fait de 4° à 10° par rapport à l'axe longitudinal (29).
  8. Accumulateur selon l'une des revendications 1 à 7, caractérisé en ce que la surface de retenue (27), celle à l'intérieur si on se réfère à l'axe longitudinal (29), est formée sur un épaulement (33, 45) - qui peut être enfoncé dans l'une des coques de boîtier (5) - de l'autre coque de boîtier (3).
EP04030566A 2001-03-31 2002-03-09 Accumulateur hydropneumatique Expired - Lifetime EP1517048B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10116235 2001-03-31
DE10116235A DE10116235A1 (de) 2001-03-31 2001-03-31 Hydropneumatischer Druckspeicher
EP02722196A EP1373736B1 (fr) 2001-03-31 2002-03-09 Accumulateur de pression hydropneumatique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02722196.9 Division 2002-03-09
EP02722196A Division EP1373736B1 (fr) 2001-03-31 2002-03-09 Accumulateur de pression hydropneumatique

Publications (3)

Publication Number Publication Date
EP1517048A2 EP1517048A2 (fr) 2005-03-23
EP1517048A3 EP1517048A3 (fr) 2005-11-09
EP1517048B1 true EP1517048B1 (fr) 2007-05-09

Family

ID=7680001

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04030566A Expired - Lifetime EP1517048B1 (fr) 2001-03-31 2002-03-09 Accumulateur hydropneumatique
EP02722196A Expired - Lifetime EP1373736B1 (fr) 2001-03-31 2002-03-09 Accumulateur de pression hydropneumatique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02722196A Expired - Lifetime EP1373736B1 (fr) 2001-03-31 2002-03-09 Accumulateur de pression hydropneumatique

Country Status (5)

Country Link
US (1) US6857450B2 (fr)
EP (2) EP1517048B1 (fr)
JP (1) JP4188697B2 (fr)
DE (3) DE10116235A1 (fr)
WO (1) WO2002079653A1 (fr)

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US6857450B2 (en) 2005-02-22
EP1373736B1 (fr) 2005-11-09
DE10116235A1 (de) 2002-10-17
EP1373736A1 (fr) 2004-01-02
JP2004523710A (ja) 2004-08-05
DE50204867D1 (de) 2005-12-15
JP4188697B2 (ja) 2008-11-26
EP1517048A2 (fr) 2005-03-23
US20040045615A1 (en) 2004-03-11
EP1517048A3 (fr) 2005-11-09
WO2002079653A1 (fr) 2002-10-10
DE50210143D1 (de) 2007-06-21

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