EP0997647B1 - Betätigungsglied mit elastischem Mittel, das ein Kolbenaggregat zurück in die Nulllage bringt - Google Patents

Betätigungsglied mit elastischem Mittel, das ein Kolbenaggregat zurück in die Nulllage bringt Download PDF

Info

Publication number
EP0997647B1
EP0997647B1 EP99402644A EP99402644A EP0997647B1 EP 0997647 B1 EP0997647 B1 EP 0997647B1 EP 99402644 A EP99402644 A EP 99402644A EP 99402644 A EP99402644 A EP 99402644A EP 0997647 B1 EP0997647 B1 EP 0997647B1
Authority
EP
European Patent Office
Prior art keywords
working
chamber
auxiliary
piston
pistons
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
EP99402644A
Other languages
English (en)
French (fr)
Other versions
EP0997647A1 (de
Inventor
Ludovic Assumel-Lurdin
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.)
ARO SA
Original Assignee
ARO SA
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 ARO SA filed Critical ARO SA
Publication of EP0997647A1 publication Critical patent/EP0997647A1/de
Application granted granted Critical
Publication of EP0997647B1 publication Critical patent/EP0997647B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
    • F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • F15B2211/7056—Tandem cylinders

Definitions

  • the present invention relates to a device cylinder elastic return of a working piston assembly in neutral position, this working piston assembly being fixed on a working rod and mounted sliding in minus a working chamber, between a rest position and a working position, said neutral position possibly being intermediate between the previous two or confused with the rest position.
  • a cylinder of this kind is known for example of document FR-A-2 721 359.
  • This cylinder can be hydraulic or pneumatic depending on the applications and the importance of work efforts to get.
  • the working rod can be connected to any kind of tools, for example pliers with articulated arms or jaws in X or C and provided with spot welding electrodes.
  • the parts to be welded can be fixed relative to the ground, the welding clamp being transported by the manipulator.
  • a welding gun of this type is described by example in French patent application n ° 98.08752 au name of the plaintiff and to whom we can refer for more details.
  • the tightening of the electrodes on the parts to be welded, corresponding to the working position mentioned above, takes place in principle after a tool approach precourse consisting of a large opening for the first assembly to be carried out (large opening which can be considered as corresponding to the rest position mentioned above) and a positioning in neutral position, for example a position intermediate for subsequent assemblies.
  • the constraints related to the welding range require work with a three-position cylinder allowing a large opening (so-called “rest” position) of the jaw especially when engaging and removing the arms of the tool relative to the parts to be welded, of a closure towards a neutral or intermediate point when approaching arms towards the welding point, and a closure with large effort during the welding cycle (position called “de work ").
  • the neutral or intermediate position must be able be used as a small opening avoiding reopening complete of the clamp.
  • Such a mechanical recall design has disadvantage of relating the welding effort to the number of pistons installed, with their sections and with the coefficient of spring return in neutral or intermediate position. The higher the recall coefficients, the greater positioning speed at neutral or intermediate point, but the lower the clamping force, and the less great is the opening speed and vice versa.
  • control elements and their logic associated are all the more multiplied and complex as there has chambers to pressurize or to exhaust, hence a multiplication of control cables, complexity of the control logic and weighting of the clamp, which removes the portable nature of this tool.
  • a cylinder according to the present invention is characterized in that the elastic device of recall of said working piston assembly in position neutral or intermediate is pneumatic and operates an auxiliary piston assembly of relatively small section, with respect to the section of the pistons constituting said set of working pistons slidably mounted in an auxiliary chamber with pneumatic supply independent of that which operates said working piston assembly.
  • said elastic device comprises at least one auxiliary piston assembly connected to said working piston assembly and slidably mounted in a auxiliary chamber, this auxiliary piston assembly being suitable for being moved, in said auxiliary chamber, in one way or the other by said piston assembly of work when it moves between its position of rest and its working position or vice versa, and at elastically compressing a gas in said chamber auxiliary, so as to be able to resiliently recall said working piston assembly in said neutral position or intermediate.
  • the invention can be implement with a "working piston assembly” consisting of one or more working pistons, depending of the desired work effort when tightening.
  • the "piston assembly auxiliary “of the elastic device may include one or several auxiliary pistons, located between the two pistons of work and able to bring these in a neutral position or small opening intermediate between wide opening position and clamping position welding tongs.
  • the jack for example pneumatic, shown in Figures 1 and 2, comprises a working rod in two sections 1 a - 1 b , fixed by any suitable means, for example by screwing at the end, on a working piston 2 equipped with an O-ring seal 3 and suitable for sliding in a cylinder 4 passing through compressed air supply passages 5 and 7, and exhaust 6.
  • the ends of the cylinder are closed by two screw caps: a plug 8 provided with a vent hole 9, and a stopper 10 having a central bore is provided with an O-ring 11 for the sealed passage of the section 1a of the working rod, which protrudes outside for actuation of any tool.
  • the working piston 2 thus divides the working chamber of the cylinder 4 into two compartments: a compartment 12 in connection with the passage 5 and formed between the piston 2 and a fixed mount 14 of the cylinder, and a compartment 13 (FIG. 1 ) in connection with the exhaust passage 6 and formed between the piston 2 and a stop circlip 15.
  • This cylinder further comprises an auxiliary piston 16 fixed at the end, by a stud 17, on the section 1b of the working rod and mounted to slide in a chamber 18 of the frame 14, the latter comprising a lateral passage 19 allowing it to be placed in permanent communication with the aforementioned passage 7 of the cylinder 4 cylinder.
  • the mount 14 is equipped with O-rings 20 and 21 for sealing respectively at the inner wall of the cylinder 4 and at the section 1b of the rod working, as the auxiliary piston 16 is equipped with O-rings 22 and 23 to achieve the seal respectively at the inner wall of the chamber 18 and at the section 1b of the working rod.
  • a circlip 24 serves to limit the movement to the left of the auxiliary piston 16 in the chamber 18.
  • the pressure in the chamber 18 causes the piston 16, the working rod 1 a -1 b and therefore the working piston 2 to be returned to the left until in the rest position of Figure 1.
  • the permanent air pressure in the chamber 18 therefore constitutes for the working piston 2 a pneumatic return spring.
  • the pneumatic cylinder shown in FIGS. 3 to 5 comprises two working pistons 26 and 27 secured to each other by a working rod 28 profiled for this purpose, and mounted sliding in the ends 29 and 30 of a body of cylindrical cylinder 31, the seal being provided by annular lip seals, respectively 26 a and 27 a , 27 b .
  • These ends 29 and 30 of the body 31 are closed by a plug 32 with an exhaust hole 33 and by a plug 34 crossed by the rod 28.
  • a bore or chamber 35 in the central part 36 of the cylinder body and on the rod 28 are slidably mounted two return pistons 37 and 38 of smaller section than the previous ones, which can bear respectively on the central part of the pistons 26 and 27.
  • the chamber 39 located at right of the piston 27 can be connected to a source of pressurized air or to atmospheric air by a pipe 40, and with the chamber 41 located to the right of the piston 26 by an axial passage 42 of the rod 28, passage opening laterally into these chambers 39 and 41, at its ends.
  • the chamber 43 separated from the chamber 39 by the piston 27 can likewise be connected to a source of pressurized air or to atmospheric air by an elbow passage 44 passing through the central part 36 of the body 31 of the jack.
  • the chamber 45 separated from the chamber 41 by the piston 26 is brought to atmospheric pressure through the hole 33, and the chamber formed by the bore 35 between the pistons 37. And 38 can be placed in permanent communication with a source pressurized air through a pipe opening into this chamber through an orifice 46.
  • the chamber 43 is then exhausted by the passage 44, and the overpressure in the chamber 35 brings the piston 37 in its initial position, as well as the pistons 26 and 27 and the rod 28 in their initial position intermediate, corresponding to the small opening of the welding tongs (figure 3).
  • Chamber 43 remains in the open air, the air under pressure is then brought through line 40 into the chamber 39 and by the axial passage 42 in the chamber 41, which causes the pistons 26 and 27 and the rod to move 28 to the left, to a working position corresponding to the tightening of the welding electrodes on the piece with the desired effort.
  • the invention makes it possible to obtain this result with a independence of the compressed air sources that are connected on the pipe 40 and the bent passage 44 on the one hand, and on the orifice 46 on the other hand, the chamber 35 to be subjected at permanent pressure, which is not the case for rooms 39, 41 and 43.
  • the control logic can therefore be simplified.
  • the pneumatic return device does not has a low inertia, in a cylinder allowing however to obtain a very significant clamping force while being of reduced length and weight compared to a three-position cylinder which would allow effort equivalent clamping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Mechanical Control Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (9)

  1. Betätigungselement mit elastischen Mitteln zur Zurückführung einer Arbeitskolbenanordnung (2) in eine Neutrallage, wobei die Arbeitskolbenanordnung (2) auf einer Arbeitsstange (1a,1b) befestigt ist und in wenigstens eine Arbeitskammer (12,13) zwischen einer Ruhelage (Figur 1) und einer Arbeitslage (Figur 2) verschiebbar ist, wobei die Neutrallage in einer Zwischenlage zwischen den beiden vorgenannten Lagen sein kann,
    dadurch gekennzeichnet, dass die elastischen Rückführmittel der Arbeitskolbenanordnung (2) in die Neutral- oder Zwischenlage pneumatisch sind und eine Hilfskolbenanordnung (16,37,38) mit einem relativ kleinen Querschnitt im Verhältnis zum Querschnitt der Kolben verwenden, die die Arbeitskolbenanordnung bilden, wobei die Hilfskolbenanordnung verschiebbar in einer Hilfskammer (18,35) mit einer Pneumatikzuführung angeordnet ist, welche unabhängig von derjenigen ist, die die Arbeitskolbenanordnung betätigt.
  2. Betätigungselement nach Anspruch 1,
    dadurch gekennzeichnet, dass die elastischen Mittel wenigstens eine Hilfskolbenanordnung (16) aufweisen, die mit der Arbeitskolbenanordnung (2) verbunden ist und in einer Hilfskammer (18) verschiebbar angeordnet ist, wobei die Hilfskolbenanordnung (16) geeignet ist, in der Hilfskammer (18) in der einen oder anderen Richtung durch die Arbeitskolbenanordnung (2) verschoben zu werden, wenn sich diese zwischen ihrer Ruhelage (Figur 1) und ihrer Arbeitslage (Figur 2) oder umgekehrt verschiebt, und geeignet ist, elastisch ein Gas in der Hilfskammer (18) zu komprimieren, derart, um elastisch die Arbeitskolbenanordnung (2) in die Neutrallage ausgehend von der Ruhelage oder der Zwischenlage zurückzuführen.
  3. Betätigungselement nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Arbeitskolbenanordnung zwei Arbeitskolben (26,27) aufweist, welche auf einer gemeinsamen Arbeitsstange (28) angeordnet sind, und dass es zwischen den beiden Arbeitskolben eine Hilfskolbenanordnung (37,38) aufweist, die einerseits auf der Arbeitsstange (28) und andererseits in einer Hilfskammer (35) eines zentralen Bereiches (36) eines Zylinders des Betätigungsgliedes verschiebbar angeordnet ist, wobei die Hilfskammer (35) permanent mit einem pneumatischen Druck beaufschlagt wird.
  4. Betätigungselement nach Anspruch 3,
    dadurch gekennzeichnet, dass die Hilfskolbenanordnung zwei Hilfskolben (37,38) aufweist, die geeignet sind, gegenüber entgegengesetzten Enden einer Hilfskammer (35) vorzuspringen, und die teilweise in dem zentralen Bereich (36) des Zylinders des Betätigungselementes hindurchragen, um sich jeweils auf dem einen oder dem anderen der beiden Arbeitskolben (26,27) abzustützen, wenn diese die Neutral- oder Zwischenlage einnehmen.
  5. Betätigungselement nach Anspruch 3 oder 4,
    dadurch gekennzeichnet, dass die Verschiebungen der Hilfszylinder (37,38) gegen die jeweiligen Enden der Hilfskammer (35) durch jeweilige Anschläge (b2,b1) begrenzt sind.
  6. Betätigungselement nach irgendeinem der Ansprüche 3 bis 5,
    dadurch gekennzeichnet, dass der zentrale Bereich (36) des Zylinders des Betätigungselementes von einer Durchtrittsöffnung (44) durchdrungen ist, die geeignet ist, mit einer Druckmittelquelle in Verbindung zu stehen oder einen Abfluss für eine erste Arbeitskammer (43) zu bilden, welche durch einen Arbeitskolben (27) begrenzt ist, wobei die gegenüberliegende Arbeitskammer (39), welche durch denselben Arbeitskolben (27) begrenzt ist, gleichermaßen in Verbindung mit einer Druckfluidquelle gesetzt oder mit dem Abfluss durch eine andere Leitung (40) verbunden werden kann.
  7. Betätigungselement nach Anspruch 6,
    dadurch gekennzeichnet, dass die gegenüberliegende Arbeitskammer (39) mit einer anderen Arbeitskammer (41), welche durch einen anderen Arbeitskolben (26) begrenzt wird, aufgrund einer axialen Durchtrittsöffnung (42) der Arbeitsstange (28) kommuniziert, wobei die Kammer (45), die entgegengesetzt zur vorangehenden im Verhältnis zum anderen Arbeitskolben (26) ist, den äußeren Druck aufweist.
  8. Betätigungselement nach den Ansprüchen 3 bis 7,
    dadurch gekennzeichnet, dass sie zur Betätigung einer Schweißzange verwendet wird, die eine Neutrallage oder eine Lage mit kleiner Öffnung, eine Zwischenlage zwischen einer Lage mit großer Öffnung und eine Verriegelungslage an den zu verschweißenden Stücken einnehmen soll.
  9. Betätigungselement nach Anspruch 8
    gekennzeichnet durch folgende Funktionsphasen:
    Unterdrucksetzen der ersten Arbeitskammer (43) für die Verschiebung der Arbeitskolben (26,27) und der Arbeitstange (28) aus der Neutrallage oder Zwischenlage mit kleiner Öffnung (Figur 3) in die Lage mit großer Öffnung (Figur 4) der Zange, wobei das unter Druck stehende Gas in der Zwischenkammer (35) dann durch einen ersten Hilfskolben (37) komprimiert wird, solange wie der zweite Hilfskolben (38) in Anlage an dem Anschlag (b1) verbleibt;
    Öffnen des Abflusses der ersten Arbeitskammer (43) und Umkehr der Arbeitskolben (26,27) und der Arbeitsstange (28) aus der Lage mit großer Öffnung (Figur 4) in die Neutral- oder Zwischenlage mit kleiner Öffnung (Figur 3) unter Einwirkung des ersten Hilfskolbens (37), der selbst unter der Wirkung des Druckes in der Hilfskammer (35) steht, wobei der erste Hilfskolben (27) in Abstützung auf dem anderen Arbeitskolben (26) bis zum Erreichen des Haltes auf einem Anschlag (b2) verbleibt;
    Unterdrucksetzen der gegenüberliegenden Arbeitskammer (39) und der anderen Arbeitskammer (41) zur Verschiebung der Arbeitskolben (26,27) und der Arbeitsstange (28) aus der Neutral oder Zwischenlage (Figur 3) in die Verriegelungslage der Zange (Figur 5), wobei das unter Druck stehende Gas in der Zwischenkammer (35) dann durch den zweiten Hilfskolben (38) komprimiert wird, solange wie der erste Hilfskolben (27) in Abstützung auf dem Anschlag (b2) verbleibt;
    Öffnen des Abflusses der gegenüberliegenden Arbeitskammer (39) und der anderen Arbeitskammer (41) und Rückkehr der Arbeitskolben (26,27) und der Arbeitsstange (28) aus der Verriegelungslage (Figur 5) der Zange in die Neutral- oder Zwischenlage mit kleiner Öffnung (Figur 3) unter Einwirkung des zweiten Hilfskolbens (38), der selbst unter der Wirkung des Druckes in der Hilfskammer (35) steht, wobei der zweite Hilfskolben (38) in Abstützung auf dem Arbeitskolben (27) bis zum Erreichen des Haltes auf dem Anschlag (b1) verbleibt.
EP99402644A 1998-10-28 1999-10-25 Betätigungsglied mit elastischem Mittel, das ein Kolbenaggregat zurück in die Nulllage bringt Expired - Lifetime EP0997647B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9813509A FR2785338B1 (fr) 1998-10-28 1998-10-28 Verin a dispositif elastique de rappel d'un ensemble de piston de travail en position neutre
FR9813509 1998-10-28

Publications (2)

Publication Number Publication Date
EP0997647A1 EP0997647A1 (de) 2000-05-03
EP0997647B1 true EP0997647B1 (de) 2004-03-03

Family

ID=9532084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99402644A Expired - Lifetime EP0997647B1 (de) 1998-10-28 1999-10-25 Betätigungsglied mit elastischem Mittel, das ein Kolbenaggregat zurück in die Nulllage bringt

Country Status (7)

Country Link
US (1) US6283011B1 (de)
EP (1) EP0997647B1 (de)
JP (1) JP2000130584A (de)
AT (1) ATE261067T1 (de)
DE (1) DE69915208T2 (de)
ES (1) ES2217707T3 (de)
FR (1) FR2785338B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1162046A3 (de) * 2000-06-09 2003-03-26 Max Co., Ltd. Schneidmaschine zum Schneiden entlang der X und Y Achsen
PT1163979E (pt) * 2000-06-14 2007-01-31 Oetiker Hans Maschinen Pinça de precisão pneumática
JP2004353134A (ja) 2003-05-30 2004-12-16 Murata Mach Ltd 幅広ヤーンによるブレイディング組成基材及びその製造方法
US9003953B2 (en) * 2011-09-14 2015-04-14 Schlumberger Technology Corporation Lockable hydraulic actuator
JP5757976B2 (ja) * 2013-06-12 2015-08-05 株式会社コガネイ 流体圧シリンダ
US9803660B1 (en) * 2014-02-04 2017-10-31 Danfoss Power Solutions Inc. Low friction compact servo piston assembly
WO2021113556A1 (en) * 2019-12-05 2021-06-10 Dadco, Inc. Pneumatic cylinder
EP4259941A2 (de) * 2020-12-08 2023-10-18 V.S.E. Vehicle Systems Engineering B.V. Zylinder und betriebsverfahren dafür

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US380375A (en) * 1888-04-03 willans
US1786474A (en) * 1928-08-15 1930-12-30 New York Air Brake Co Pump-regulating valve
US2092580A (en) * 1935-11-16 1937-09-07 Yellow Truck And Coach Mfg Com Gear shift damper
FR2112065B1 (de) 1970-09-08 1974-04-26 Gournelle Paul
US3672402A (en) * 1970-09-14 1972-06-27 Eaton Yale & Towne Automatic precharge adjuster
US3752161A (en) * 1971-08-02 1973-08-14 Minnesota Mining & Mfg Fluid operated surgical tool
US4226167A (en) * 1978-05-17 1980-10-07 Lew Yon S Air-spring return air cylinder
US5125326A (en) * 1991-01-29 1992-06-30 Rockwell International Corporation Three position actuator having a neutral normal position for shifting a two speed transfer case
DE4108220C2 (de) * 1991-03-14 2003-04-17 Festo Ag & Co Kolben-Zylinder-Anordnung
FR2721359B1 (fr) * 1994-06-15 1996-09-13 Libervit Procédé et dispositif de commande et d'alimentation de vérin de manÓoeuvre d'outils hydrauliques.
DE19511929C1 (de) 1995-03-31 1996-05-23 Weidtmann Wilhelm Kg Dreh- und/oder Kipp-Beschlag für Fenster, Türen od. dgl. mit einem zwischen dem Flügel und dem Rahmen angeordneten Flügelheber
FR2756863B1 (fr) 1996-12-06 1999-01-22 Ferco Int Usine Ferrures Dispositif de securite de type antifausse manoeuvre pour une ferrure de verrouillage d'un vantail
JP3959565B2 (ja) * 1997-12-16 2007-08-15 Ｓｍｃ株式会社 電磁パイロット式３位置切換弁

Also Published As

Publication number Publication date
FR2785338B1 (fr) 2001-08-10
FR2785338A1 (fr) 2000-05-05
ATE261067T1 (de) 2004-03-15
EP0997647A1 (de) 2000-05-03
JP2000130584A (ja) 2000-05-12
DE69915208T2 (de) 2005-02-17
DE69915208D1 (de) 2004-04-08
US6283011B1 (en) 2001-09-04
ES2217707T3 (es) 2004-11-01

Similar Documents

Publication Publication Date Title
EP0997647B1 (de) Betätigungsglied mit elastischem Mittel, das ein Kolbenaggregat zurück in die Nulllage bringt
JP4881490B2 (ja) 自動車工業のボディ製造において使用される、ダブルピストン機構を備えた圧力空気駆動式の装置
FR2504841A1 (fr) Dispositif perfectionne pour transmettre par fluide une force motrice d'une base a un organe d'execution d'un manipulateur
US5762325A (en) Power actuated gripper
RU2664991C9 (ru) Сварочный пистолет
FR2781016A1 (fr) Verin a precourse d'approche et course de travail, pour la manoeuvre d'un outil
EP0424190B1 (de) Arbeitsgerät mit einer zwei gelenkig gelagerte Arme aufweisenden Zange mit System zum Hintergreifen
FR2748298A1 (fr) Dispositif de verin pneumatique
WO2001058800A1 (en) Pneumatic crimping and capping handheld tool
EP0490746A1 (de) Verfahren und Vorrichtung zum Formen und Halten dünner Werkstücke grosser Abmessungen an einem vorbestimmten theoretischen Profil
EP0174410B1 (de) Gerät für die automatische, aufeinanderfolgende Steuerung von mindestens zwei Prozessen oder Handlungen
FR2573491A1 (fr) Actionneur autobloquant a circulation de fluide, pour la manoeuvre d'outils dans des installations automatisees
EP2202122B1 (de) Schienenfahrzeugbremszylinder
EP0019537A1 (de) Wegziehbarer Greifer
EP0222662A1 (de) Hand oder Greifeinrichtung für Roboter
FR2480873A1 (fr) Systeme hydro-pneumatique pour l'entrainement d'un dispositif de manoeuvre hydraulique
EP0144337B1 (de) Druckluftspareinrichtung
FR2542225A1 (fr) Outil de pose d'ecrous filetes de rivets borgnes
FR2786423A1 (fr) Outil emporte-piece hydraulique
FR2558216A1 (fr) Dispositif de purge d'urgence pour verin pneumatique
EP1122031A1 (de) Spann-Wekzeug und insbesondere Krimp-Wekzeug
FR2538745A1 (fr) Pince de prehension pour manipulateur et procede de mise en oeuvre d'une telle pince
US4091694A (en) Repair clamp application tool
FR2749363A1 (fr) Compresseur de ressort a fluide sous pression
EP1375046B1 (de) Tragbare Punktschweisszange

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000527

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040303

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040303

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040303

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040303

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

REF Corresponds to:

Ref document number: 69915208

Country of ref document: DE

Date of ref document: 20040408

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040603

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040603

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040603

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040602

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041025

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2217707

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20041206

BERE Be: lapsed

Owner name: *ARO

Effective date: 20041031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050503

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20041025

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051025

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20041026

BERE Be: lapsed

Owner name: *ARO

Effective date: 20041031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040803