EP1808605A1 - Procédé de fabrication d'accumulateurs de pistons - Google Patents

Procédé de fabrication d'accumulateurs de pistons Download PDF

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Publication number
EP1808605A1
EP1808605A1 EP07007946A EP07007946A EP1808605A1 EP 1808605 A1 EP1808605 A1 EP 1808605A1 EP 07007946 A EP07007946 A EP 07007946A EP 07007946 A EP07007946 A EP 07007946A EP 1808605 A1 EP1808605 A1 EP 1808605A1
Authority
EP
European Patent Office
Prior art keywords
cover part
longitudinal edge
storage housing
storage
housing
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
Application number
EP07007946A
Other languages
German (de)
English (en)
Other versions
EP1808605B1 (fr
Inventor
Herbert Baltes
Walter Dorr
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 EP1808605A1 publication Critical patent/EP1808605A1/fr
Application granted granted Critical
Publication of EP1808605B1 publication Critical patent/EP1808605B1/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
    • F15B1/24—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
    • F15B2201/20—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
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • 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
    • F15B2201/4155—Gas 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
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/605—Assembling or methods for making housings therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49394—Accumulator making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y10T29/49917—Overedge assembling of seated part by necking in cup or tube wall
    • Y10T29/49918—At cup or tube end

Definitions

  • the invention relates to a method for producing piston accumulators according to the feature configuration of the preamble of claim 1.
  • Piston accumulator as exemplified in the DE 2 238 211 A are shown in the broadest sense belong to the so-called hydraulic accumulators, which serve, inter alia, to hold certain volumes of pressurized fluid (hydraulic medium) of a hydraulic system and return them to the system if necessary. Since the hydraulic medium is under pressure, the hydraulic accumulators are treated like pressure vessels and must be designed for the maximum operating pressure, taking into account the acceptance standards of various installation countries. In most hydro plants today hydropneumatic (gas-loaded) memory are used with separating element, wherein the piston accumulators as a separating element serves a piston which separates a liquid space as a working space of a gas space as another working space within the storage housing of the piston accumulator. Nitrogen is regularly used as working gas and the gas-tight piston largely allows a decoupling of gas space to liquid space.
  • piston accumulator receives liquid and the gas is compressed. With decreasing pressure, the compressed gas expands, displacing the stored pressure fluid back into the hydraulic circuit.
  • the essential components of a piston accumulator are therefore as an accumulator housing an outer cylinder tube, the piston as a separating element with its sealing system and the front-side cap, which at the same time include a liquid and gas connection as cover parts.
  • the memory housing regularly two functions, namely once to stockpile the internal pressure and to ensure the other hand, the leadership of the piston within the storage enclosure.
  • the front side of the interior of the storage enclosure relative to the environment final lid parts are provided on the outer peripheral side with an external thread in a corresponding internal thread along the free longitudinal edge of the storage enclosure via a specifiable distance can be screwed.
  • the preparation of the pertinent threaded connection is time consuming, which increases the cost of manufacturing the piston accumulator accordingly.
  • safety measures must be taken to secure the inserted cover part in its position in the storage housing.
  • the invention has the object to further improve the known production method for piston accumulator to the effect that with little manufacturing effort a functionally reliable and secure connection of a cover part in the storage enclosure a piston accumulator is guaranteed and that damage to the cover part can be avoided.
  • This object is achieved by a method having the features of claim 1 in its entirety.
  • the longitudinal edge is reduced compared to the other memory housing in the wall thickness, that the transition point between these different wall thickness forms the stop for the cover part within the storage enclosure, and that the free longitudinal edge along its free end flush or is guided with a supernatant on the overhead second side of the lid part, a kind of clamping seat is achieved at the respectively associated free end of the storage enclosure for the cover part, wherein the Dekkelteil is clamped at least over the free longitudinal edge of the storage housing after its feed movement to the lid part, said it is sufficient if a part of the free longitudinal edge of the pertinent press fit.
  • the stop provided on the inside of the storage housing makes it possible for the delivery movement of the free longitudinal edge of the storage housing to fix the cover part against this stop. Additionally or alternatively, however, it is also possible to simply insert the cover part at the free end of the storage housing and then trigger the Zustellterrorism for the free longitudinal edge of the storage enclosure, which in dergestalt with the known solutions, for example, after DE 42 05 199 C2 not possible.
  • the Zustellterrorism can take place against the top cover, if the cover part is held in a pertinent position; but it would also be conceivable to carry out a free feed movement for the longitudinal edge, and then then in the ready state, the cover part on the guided in the storage chamber piston against the free To proceed along the longitudinal edge, which then makes such a clamp here.
  • the lid part is inserted with its one lower side against the stop inside the storage housing or that the stop for the lid part is provided with a slope against which the lid part is based in a stepped paragraph.
  • a forming tool is provided which provided with Zustellschrägen the longitudinal edge of the storage housing on the cover part such that this is determined in the manner of said clamping fit in the storage enclosure.
  • the method according to the invention take in a common feed movement to the storage housing two forming tools on opposite sides before the fixing process for the respective end cover part by acting on the respective free longitudinal edge of the storage enclosure. It has proven to be very advantageous for the generation of high locking forces to deliver both free ends of the cylindrical storage enclosure alike, said acting at one end of the storage enclosure forming tool can safely support the forces from the other side during the forming process with the other forming tool be introduced into the storage enclosure.
  • the prior art piston accumulator shown in Fig. 1 has as an accumulator housing 10 an outer cylinder tube in which Separating a piston 12 with its outer peripheral sealing system 14 is guided longitudinally movable.
  • the piston 12 separates within the storage housing 10, two working spaces 16,18 from each other, wherein the one working chamber 16 receiving a working gas, in particular in the form of nitrogen, and the other second working space 18 forms the so-called. Liquid space for the piston accumulator.
  • the displacement position of the piston 12 and consequently the volume proportions of gas and fluid in the work spaces 16 and 18 vary.
  • a cover part 20, 22 is arranged with a gas connection 24 for replenishing the nitrogen working gas and with a fluid port 26 for connecting the piston accumulator to a not-shown hydro overall system.
  • the two cover parts 20,22 are each provided with an external thread 28 which is engageable with an internal thread 30 which is arranged to extend along the free longitudinal edge 32 and opens outwards into the open.
  • the respective cover part 20, 22 is provided with a seal 34 for sealing the interior of the storage housing 10 from the surroundings.
  • the attachment of the threaded sections 28,30 is associated with a certain manufacturing effort, which can be costly and expensive to manufacture the known piston accumulator.
  • an anti-twist device for the respective cover part 20, 22 is necessary in order to ensure its positional fixation within the storage housing 10.
  • a possible anti-rotation for the respective Dekkelteil 20,22 may consist in that along the threads 28,30 provides a conventional adhesive assurance or the cover part is held with a conventional retaining hole (with and without thread) in position.
  • the method according to the invention is characterized, inter alia, by the fact that a cover part, here the cover part 20, is inserted with its one lower side 36 against a stop 38 in the form of an annular surface in the interior of the storage housing 10, wherein on the opposite side 40 of the cover part 20 this is set over the free longitudinal edge 32 of the storage enclosure 10, for which purpose the longitudinal edge 32 undergoes a feed movement to the cover part 20, which will be explained in more detail below.
  • a forming tool 42 which is provided with at least one feed bevel 44, which sets the longitudinal edge 32 on the lid member 20 that this in the manner of a clamping fit in the storage housing 10 between the stop 38 and the Longitudinal edge 32 is fixed.
  • the upper side 40 of the cover part 20 is provided with a contact surface 46, which is arranged conically to the longitudinal axis 48 of the storage housing 10 extending.
  • the inclination of the pertinent contact surface 46 corresponds to the inclination of the feed bevel 44 of the forming tool 42; but there are also other obvious tendencies or
  • the feed direction for the forming tool 42 is the longitudinal axis 48 of the storage housing 10 or of the entire piston accumulator.
  • the separating element in the form of the piston 12 has been omitted in FIG. 2, just like the gas connection 24 shown in FIG. 1, which is also an integral part of the upper cover part 20 here.
  • the upper free end of the storage housing with its upper longitudinal edge 32 has a contour according to one of the representations according to Figures 3 to 6.
  • the longitudinal edge 32 is preferably provided on its side facing the cover part 20 and outwardly oriented with a conical insertion bevel 50.
  • the pertinent insertion bevel 50 facilitates the insertion of the cover part 20 in the free upper end of the storage housing 10, which will be explained in more detail below.
  • the free longitudinal edge 32 which in particular the illustration of Figures 4 and 5 shows the outside circumference and the free end of the storage enclosure 10 oriented towards be provided with a sliding bevel 52, which facilitates the longitudinal edge 32, according to its cylindrical shape the views according to Figures 3 to 6 in an zuplanned inclined position, wherein the sliding bevel 52 then slides along the feed slope 44 of the forming tool 42, provided that it is increasingly placed on the storage housing 10 in the feed direction. If the feed movement is completed with the forming tool 42, the longitudinal edge 32 is on the cover part 20 along its contact surface 46 in the manner of a Festgeschräge formed inclined and holds the lid member 20 against the stop 38 in the interior of the storage enclosure 10 fixed.
  • the free longitudinal edge 32 along its free end with a supernatant over the overhead second side 40 of the cover part 20 is guided.
  • the forming tool 42 is moved away from the storage housing 10 again and then takes, for example, its upper position shown in Figure 2 a.
  • the forming process for the respective longitudinal edge 32 of the storage housing 10 is cold; but it is also a hot forming conceivable with appropriate heating of the storage housing material and preferably the forming tool 42 itself.
  • a material for the storage housing 10 with its longitudinal edge 32 is a conventional, good moldable steel material used.
  • the height of the cover part 20 is adapted in each case to the predetermined by the operation of the storage conditions.
  • the cover part 20 is at least twice as large as the length of the longitudinal edge 32 between its free end and a deflection point 54, from which the longitudinal edge 32 is placed on the lid top.
  • a particularly preferred embodiment (not shown) of the method according to the invention is in a common feed movement two forming tools 42 on opposite sides of the storage housing 10 of the fixing process for the respective end-side cover part 20,22 made simultaneously and together with substantially the same forming forces by acting on the respective free longitudinal edge 32 of the storage enclosure 10.
  • the respective opposite forming tool can simultaneously absorb the forces of the other forming tool during forming, as they occur during the forming process.
  • the pertinent embodiment can be saved on elaborate supporting devices on the respective opposite sides, where the forming tool 42 does not act. Also, such a harmonic introduction of force into the storage housing 10 occurs without the occurrence of damaging force peaks.
  • the Aufsetzwerkmaschine 56 has a receiving space 60, in which the upper end of the storage enclosure 10 is receivable, so that the Zu manufacturedschräge 58 flush with the upper edge of the longitudinal edge 32 and the rest continuously in the receiving area 62 for the actual cover part 20th , 22 in the memory housing 10 passes.
  • the storage housing 10 along its upper longitudinal edge 32 on the inner peripheral side and outwardly expanding with the insertion 50, which results in a kind of shortened slip edge over which the respective cover part 20,22 in the same way introduce and then set later.
  • the pertinent variant can be chosen if the lid seal 34 proves to be robust and should not be too vulnerable to damage.
  • the same reference numerals are used for the same components and procedural described the modified embodiment only in so far as it differs significantly from the above-indicated method.
  • the upper lid part 20 has been held by the free longitudinal edge 32 of the storage housing 10 such that the free longitudinal edge 32 is flush along its free end with the upper second side 40 of the lid part 20.
  • the stop 38 for the cover part 20 is provided in the embodiment according to FIG. 7 with a bevel, against which the cover part 20 bears in a stepped shoulder.
  • the ring seal 34 is again received on the outer peripheral side, wherein due to the indicated gradation of storage housing 10 and cover part 20, the possibility exists to edit the storage housing 10 for a clean contact with the sealing ring 34 at this point according to very fine and the inside the memory housing 10 to leave essentially unprocessed, provided that the delivery area for the free longitudinal edges 32 of the storage enclosure 10 is addressed.

Landscapes

  • 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)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)
EP07007946A 2003-02-01 2004-01-15 Procédé de fabrication d'accumulateurs de pistons Expired - Lifetime EP1808605B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10303988A DE10303988A1 (de) 2003-02-01 2003-02-01 Verfahren zum Herstellen von Kolbenspeichern
EP04702305A EP1588056B1 (fr) 2003-02-01 2004-01-15 Procede de realisation d'accumulateurs hydrauliques

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04702305A Division EP1588056B1 (fr) 2003-02-01 2004-01-15 Procede de realisation d'accumulateurs hydrauliques

Publications (2)

Publication Number Publication Date
EP1808605A1 true EP1808605A1 (fr) 2007-07-18
EP1808605B1 EP1808605B1 (fr) 2009-04-15

Family

ID=32730673

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04702305A Expired - Lifetime EP1588056B1 (fr) 2003-02-01 2004-01-15 Procede de realisation d'accumulateurs hydrauliques
EP07007946A Expired - Lifetime EP1808605B1 (fr) 2003-02-01 2004-01-15 Procédé de fabrication d'accumulateurs de pistons

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04702305A Expired - Lifetime EP1588056B1 (fr) 2003-02-01 2004-01-15 Procede de realisation d'accumulateurs hydrauliques

Country Status (6)

Country Link
US (1) US8387253B2 (fr)
EP (2) EP1588056B1 (fr)
JP (1) JP2006516706A (fr)
AT (2) ATE365870T1 (fr)
DE (3) DE10303988A1 (fr)
WO (1) WO2004067968A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043352A1 (de) * 2004-09-08 2006-03-23 Hydac Technology Gmbh Hydrospeicher
GB2420380A (en) * 2004-11-18 2006-05-24 Parker Hannifin Plc Twin piston gas filled hydraulic actuator
DE102009021463A1 (de) * 2009-05-15 2010-11-18 Hydac Technology Gmbh Hydrospeicher
DE102015014797A1 (de) * 2015-11-14 2017-05-18 Hydac Technology Gmbh Sicherheitsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238211A1 (de) 1972-08-03 1974-02-14 Haenchen Kg Herbert Mit druckmittel beaufschlagbarer zylindrischer behaelter
JPH0392679A (ja) 1989-09-05 1991-04-17 Showa Mfg Co Ltd 圧力容器の製造方法
DE4205199A1 (de) 1991-02-20 1992-09-10 Showa Seisakusho Gyoda Kk Befestigungsanordnung fuer ein verschlussstueck eines druckspeichers
JPH11230102A (ja) 1998-02-12 1999-08-27 Kayaba Ind Co Ltd アキュムレータ
EP1128073A1 (fr) * 2000-02-28 2001-08-29 Serta Procédé de fermeture de l'extrémité formant le fond ou le guide de tige du fût d'un cylindre de travail
US20020104433A1 (en) * 2000-07-05 2002-08-08 Antonio Colombo Fluid-actuated cylinder and method for manufacturing it

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734531A (en) * 1956-02-14 Hydraulic accumulators
US2748801A (en) * 1953-10-22 1956-06-05 Tommy J Mccuistion Accumulators
US3408731A (en) * 1966-04-25 1968-11-05 Mercier Jean Method of retaining cover member on pressure vessel
US3541833A (en) * 1966-04-25 1970-11-24 Jean Mercier Apparatus for forming pressure vessel ends
DE3411592C2 (de) * 1984-03-29 1994-06-30 Hydac Technology Gmbh Hydropneumatischer Speicher
US4848448A (en) * 1987-12-28 1989-07-18 Mccord Heat Transfer Corporation Heat exchange assembly
JPH03101U (fr) * 1989-05-23 1991-01-07
US5115663A (en) * 1989-11-25 1992-05-26 Honda Giken Kogyo Kabushiki Kaisha Method for forming a crankshaft
JP2531945Y2 (ja) * 1991-02-20 1997-04-09 株式会社ショーワ アキュームレータ構造
JPH08159102A (ja) * 1994-12-05 1996-06-18 Nok Corp アキュムレータ
JP2000071134A (ja) * 1998-08-27 2000-03-07 Nissan Diesel Motor Co Ltd エンジン組立作業におけるピストン挿入装置
JP4342091B2 (ja) * 2000-08-03 2009-10-14 本田技研工業株式会社 ピストン挿入治具
US6460571B1 (en) * 2001-03-13 2002-10-08 Parker-Hannifin Corporation Crimped piston/membrane accumulator
DE10139192A1 (de) * 2001-08-16 2003-03-06 Hydac Technology Gmbh Kolbenspeicher
DE10313241A1 (de) 2003-03-25 2004-10-21 Hydac Technology Gmbh Kolbenspeicher

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2238211A1 (de) 1972-08-03 1974-02-14 Haenchen Kg Herbert Mit druckmittel beaufschlagbarer zylindrischer behaelter
JPH0392679A (ja) 1989-09-05 1991-04-17 Showa Mfg Co Ltd 圧力容器の製造方法
DE4205199A1 (de) 1991-02-20 1992-09-10 Showa Seisakusho Gyoda Kk Befestigungsanordnung fuer ein verschlussstueck eines druckspeichers
JPH11230102A (ja) 1998-02-12 1999-08-27 Kayaba Ind Co Ltd アキュムレータ
EP1128073A1 (fr) * 2000-02-28 2001-08-29 Serta Procédé de fermeture de l'extrémité formant le fond ou le guide de tige du fût d'un cylindre de travail
US20020104433A1 (en) * 2000-07-05 2002-08-08 Antonio Colombo Fluid-actuated cylinder and method for manufacturing it

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30) *

Also Published As

Publication number Publication date
DE10303988A1 (de) 2004-08-19
EP1588056B1 (fr) 2007-06-27
EP1808605B1 (fr) 2009-04-15
US20060016074A1 (en) 2006-01-26
ATE428861T1 (de) 2009-05-15
DE502004004183D1 (de) 2007-08-09
ATE365870T1 (de) 2007-07-15
DE502004009375D1 (de) 2009-05-28
JP2006516706A (ja) 2006-07-06
WO2004067968A1 (fr) 2004-08-12
US8387253B2 (en) 2013-03-05
EP1588056A1 (fr) 2005-10-26

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