EP0149386B1 - Notentlüftungseinrichtung für pneumatische Zylinderkolben - Google Patents

Notentlüftungseinrichtung für pneumatische Zylinderkolben Download PDF

Info

Publication number
EP0149386B1
EP0149386B1 EP84402581A EP84402581A EP0149386B1 EP 0149386 B1 EP0149386 B1 EP 0149386B1 EP 84402581 A EP84402581 A EP 84402581A EP 84402581 A EP84402581 A EP 84402581A EP 0149386 B1 EP0149386 B1 EP 0149386B1
Authority
EP
European Patent Office
Prior art keywords
pneumatic
fluid
bolt
orifice
drain device
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
Application number
EP84402581A
Other languages
English (en)
French (fr)
Other versions
EP0149386A1 (de
Inventor
Daniel Bouteille
Michel Nicolas
Daniel Guillin
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique 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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of EP0149386A1 publication Critical patent/EP0149386A1/de
Application granted granted Critical
Publication of EP0149386B1 publication Critical patent/EP0149386B1/de
Expired 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • 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
    • F15B15/1433—End caps
    • 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
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/004—Fluid pressure supply failure
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration

Definitions

  • Such devices can be used in all pneumatic installations, either to stop the displacement of the rods of jacks, for example when a danger appears, or to make possible manual actuation of the rod of this jack, in order execute a verification or adjustment operation.
  • a cylinder can only be stopped and placed in an indifferent state if the pressures exerted on the two faces of its piston disappear after having decreased simultaneously.
  • a 3/2 modular pneumatic disconnector can be used to operate the venting of a pressure supply line serving a multiplicity of distributors, each associated with a respective jack; such a disconnector, which simultaneously operates the interruption of the arrival of the pressurized fluid from the source in the general line and connects the latter to the atmosphere, is always placed at the head of this line, so that one must take into account the purge time from the line lengths, distributors and flow limiters mentioned above.
  • the invention therefore proposes to provide an inexpensive and space-saving simple purge device for an actuator which is capable of rapidly evacuating the air which it contains when, exceptionally, a signal of opening, controlling the interruption of the supply of compressed air is applied to an installation, and in particular when this opening signal which switches a pneumatic switch capable of connecting the general distribution line to an exhaust after having disconnected it of the compressed air source, is represented by the disappearance of a pressure.
  • this device has fixing means which are screwed directly onto the body of the jack and comprises an internal channel connected to the supply inlet, to the fluid outlet and to an orifice communicating with an exhaust, this orifice being closed by a valve placed opposite when a closing force is exerted on it created by the pressure of the fluid on the control input and this orifice being opened by the fluid escaping from the chamber when the control pressure and the supply pressure disappear simultaneously.
  • Rapid purge devices have already been used between the cylinders and the distributors to accelerate the movement of a cylinder when the circuit which supplies it does not have a sufficient size to ensure rapid displacement of the fluid, or when the distributor is located away from the jack; such a device which is located near the cylinder, connects the chamber of the cylinder, discharging its fluid, directly to the exhaust as soon as the distributor operates its switching; these devices use a valve which is placed opposite an orifice communicating with the atmosphere, and which is either applied against the latter when the cylinder is supplied with pressure, or lifted by the fluid of the cylinder when the latter is being evacuated. Such a rapid purge device therefore operates continuously.
  • the compressed air source 2 of pressure “P is connected by the pipe 3 to a general pneumatic disconnector 4 which is represented here in its on state, where it allows the fluid to circulate towards a general distribution pipeline 5.
  • the general distribution line is connected at certain points to distributors such as 8 and 9 which are also connected to an exhaust manifold 10.
  • the first 8 of these distributors supplies for example a first cylinder 11, without one or more speed adjustment devices being placed on one of the supply lines 12 or 13 so that the speed of movement of the piston of this cylinder is essentially determined by the characteristics of the load 14 that it displaces, and by the pressure P.
  • the second distributor 9 is connected to a second jack 17 by lines 15 and 16 which have speed regulators 18 respectively 19 on their path. These each comprise at least one throttle of adjustable value, such as 21, which is frequently placed in parallel on a one-way valve such as 20.
  • a purge device according to the invention 24, 24 'whose internal constitution is described below. below and whose function is to connect the chamber 23, respectively 22, either to the speed regulator 18 respectively 19 in its active state, or to a vent 25 respectively 25 'opening to the atmosphere in its passive state.
  • the pipe portion 15 'shown in FIG. 1a between the chamber 23 and the purge device is therefore as short as the material embodiment allows.
  • the active state of the purge device 24 represented in FIG. 1a is obtained by the application to an input 26 of a pressure control signal "P •, which is conveyed by the same line 27 as that leading to the input 6 of the general disconnector.
  • the displacement speed of the piston belonging to the jack 17 is determined not only by the nature of the load 28 but also by the speed regulators 18 and 19 which impose restrictions on the passage of fluids from the chambers and going to the exhaust manifold 10.
  • the state of rapid purging of the jack does not impose slow circulation on the air contained in the chambers 22 and 23 through the speed regulator (s) 20, 21 when the piston rod 29 must be actuated by hand, for example to carry out an adjustment or a verification of the positions that this rod can take, because on the one hand, the aspiration towards a chamber takes place in the direction of passage of the non-return valve , and on the other hand, the backflow coming from the other chamber escapes directly to the atmosphere.
  • a purge device in accordance with a first embodiment such as 24, is in particular visible in FIG. 2 where, to reduce as much as possible the length of pipe 15 'mentioned above, a controlled valve 30 for setting The exhaust has been combined with a known type swivel fitting 31 which is fixed directly to the wall of the cylinder 32 of a jack 17.
  • the swivel fitting essentially comprises a body 33 having a first through bore 34 of axis XX 'and a second bore 35 of perpendicular axis YY' which communicates internally with the first and which presents externally association means 36 with a pipe such that 15, or such as 15 ", if a speed regulating device (not shown) is placed between it and the distributor 9.
  • the bore 34 is traversed by a hollow bolt 37 which cooperates with the bore in leaktight manner thanks to seals 38, 39 and one end 40 of which has a thread 41 capable of cooperating in leaktight manner with a corresponding thread 42 of the wall 32, for example by means of a seal 45 or a conical thread, while an opposite end 43 has a clamping head 44, for example polygonal.
  • the bolt has an axial through channel XX '46 connected by openings 47 to an annular space 48 placed between it and the bore 34.
  • the region of this channel 46 opposite the thread 41 opens out through an orifice 49 in a cylindrical housing 50a, 50b which is hollowed out in the head 44 and which receives a part of revolution 51.
  • the latter has an internal housing 52 which is placed opposite the orifice 49 and which receives a valve 30 capable of closing the latter by axial sliding XX ' in the housing 52.
  • the external surface 53 of this part 51 circulates parallel to the housing 50a and has radial extensions 54 which are centered in the housing 50b to make the axis of the part 51 coaxial with XX ', see FIG. 3.
  • a first annular space 55 existing between the bottom of the housing 50a and the part 51 as well as a second annular space 56 existing between the housing 50a and the part 51 make it possible to connect the orifice 49 to the atmosphere 63 through radial spaces 57 placed between the radial extensions, see Figure 3.
  • the region of the part 51 opposite the housing 52 has a second housing 58 which is connected to the latter and which receives a small orientable connector 60 materializing the inlet 26 visible in FIG. 1a; this connector 60 is therefore connected to an external pipe 27 taking, for example, the form of a flexible plastic tube.
  • the operation of the rapid purge device results from the chosen arrangement, the presence or absence of pressures in the lines 27 and 15, 15 "respectively in the chamber 23 of the jack 17 and the ratio of the diameters of the orifice 49 and housing 52.
  • the purge device 70 comprises a body 72 and a fixing bolt 73, on which a bent connection 71 can appear, containing, for example, a one-way flow regulator 100 , 101.
  • the body 72 has, in a tab 72 ', a bore 74 of axis XX' which passes right through it, and in a lateral extension 72 ", a bore 110 of axis YY ', perpendicular to XX', which opens out on the one hand, in the first bore and, on the other hand, through an orifice 76, towards a concentric housing 77 communicating with the outside.
  • this housing is fixed a cylindrical part 79, for example by means of radial projections 89, which are applied to the internal surface 77 of the housing, and which leave between them and the external surface 80 of this part passages 81, 91.
  • This part has an internal end 85, which is located at a certain distance from the bottom 78 of the housing, and which has a cylindrical housing 83 in which is housed in a sliding and sealed manner, a valve 84 made of elastomer.
  • An internal channel 82 of the part 79 communicates with the housing 83 and with a quick pneumatic connector 86, which is fitted at the opposite end 90 to receive a pipe 27, for example flexible.
  • the bore 74 is crossed by a hollow fixing bolt 73 which has an internal channel 111 concentric with XX '.
  • This channel which communicates by lateral openings 95 with an annular space 96 situated between the bore 74 and the external surface of the bolt placed opposite, has a thread 92 at a first upper end.
  • the bolt has an upper head 94, for example provided with hexagonal flaps 93 for a tightening tool, and an end 99 carrying a thread 98.
  • the bolt can be tightly tightened in an opening 42 in the wall 32 of a jack 17.
  • the bores 110 and 111 respectively represent portions 75 ′ and 75 "of an internal channel 75 of the purge device.
  • the points mentioned in 15 ", 15 'and 26 correspond to those of FIG. 1a, and correspond respectively to the pressure inlet, the pressure outlet and the control inlet.
  • a conventional elbow fitting 71 itself having a hollow connecting bolt 71 ′ can be screwed and tightly fixed by the latter in the thread 92 of the bolt 73.
  • a pipe 112 is connected to this connection at a point 15, which corresponds to that mentioned in FIG. 1a, and which is therefore supplied by a pneumatic distributor such as 9.
  • a filter 62 ′ can be placed between the passages 81, 91 and the exhaust 89; alternatively, the exhaust 89 can be protected, as in the previous mode, by a flexible annular part 88, similar to 62.
  • the operation of the second embodiment is identical to the previous one, namely that, when a control signal pressure is applied to point 26, the valve 84 closes the orifice 76 due to the fact that the diameter of the housing 83 has been chosen large enough compared to that of the orifice, to resist the force applied to it on the surface of the orifice.
  • a pressure applied at 15 therefore flows through the unidirectional valve 100 and passes through points 15 "and 15 'to supply the jack; when to obtain a reverse movement of the piston of the jack, point 15 is connected to the exhaust, the chamber 113 of the cylinder is emptied by 15 'and 15 "through the speed regulator 101.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)

Claims (6)

1. Notentlüftungseinrichtung (24, 70) für einen Zylinderkolben (17), die diesen anhalten soll und einen Eingang (15") für die Zufuhr von Fluid unter Druck besitzt, welcher an einen pneumatischen Verteiler (9) angeschlossen ist, einen Fluidausgang (15'), der an eine Kammer (23) des Zylinders (17) angeschlossen ist und einen Steuereingang (26), in den ein Fluid eingeführt wird, welches auf ein inneres pneumatisches Organ (30, 84) einwirkt, welches den Fluidausgang (15') mit der Atmosphäre verbinden kann oder nicht, dadurch gekennzeichnet, dass diese Entlüftungseinrichtung (24, 70) Befestigungsmittel (37, 73) besitzt, die direkt auf den Zylinder (17) Körper (32) geschraubt werden und einen inneren Kanal (46, 75), der an den Versorgungseingang (15"), den Fluidausgang (15') und an eine Öffnung (49, 76) angeschlossen ist, die mit einem Auslass (25) in Verbindung steht, wobei besagte Öffnung von einer ihr gegenüberliegenden Klappe (30, 84) geschlossen wird, wenn auf diese eine, vom Fluiddruck auf den Steuereingang (26) ausgeübte Schliesskraft wirkt, während besagte Öffnung (49, 76) vom Fluid geöffnet wird, das aus der Kammer (23) tritt, wenn der Steuerdruck nicht mehr vorhanden ist.
2. Entlüftungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Befestigungsmittel von einem hohlen Bolzen (37, 73) gebildet werden, welcher durch die Bohrung (34, 74) eines Körpers (33, 72) verläuft, die senkrecht zur Achse XX' des Bolzens verläuft und einen Spannkopf (44, 93) besitzt, der einerseits diesen Körper hermetisch auf den Zylinder (17) Körper (32) anlegen kann und andererseits einen pneumatischen Anschluss (60, 71) aufnehmen kann.
3. Entlüftungseinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass besagter pneumatischer Anschluss (60) das Steuersignal an seinem Eingang (26) erhält, während der Bolzen (37) eine Klappe (30) aufweist, welche beweglich ist zwischen einer Öffnung (49) an einem Ende eines in diesem Bolzen verlaufenden Kanals (46) und einem aufgesetzten Teil (51), wobei letzteres konzentrisch zur Achse XX' des Bolzens so angebracht ist, dass ein ringförmiger Zwischenraum (55, 56, 57) freibleibt, der zum Auslass (25) führt und der Versorgungseingang (15") in einem Körper (33) angeordnet ist, der mit dem Kanal (46) in Verbindung steht.
4. Entlüftungseinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der pneumatische Anschluss (71) den Versorgungseingang (15") aufnimmt, der im Kopf (93) eines Bolzens (73) angeordnet ist, der axial und durchgehend von einem Kanal (111) durchquert wird, während die Klappe (84) beweglich ist zwischen einer Öffnung (76) in Körper (72), der mit besagtem Kanal in Verbindung steht, und einem Teil (79), das in besagten Körper so eingesetzt ist, dass ein ringförmiger Raum (91) freibleibt, welcher zum Auslass (89) führt, wobei dieses Teil einen Anschluss (86) trägt, der den Eingang (26) des Steuersignals aufnimmt.
5. Entlüftungseinrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Ausgänge der ringförmigen Zwischenräume ((63, 89), die zum Auslass (25) führen entweder durch einen Filter (61) mit sehr geringem Druckverlust geschützt werden, oder durch einen Verschlussdeckel (62, 88), der sich entfernt oder elastisch verformt wird, wenn das Entlüftungsmittel zirkuliert.
6. Pneumatische Einrichtung unter Verwendung der Entlüftungseinrichtung (24, 70) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Steuereingang (26) dieser Entlüftungseinrichtung zur gleichen Zeit aktiviert wird, wie der Steuereingang (6) eines allgemeinen pneumatischen Unterbrechers (4), der eine allgemeine Versorgungsleitung (5) dieser Einrichtung entweder mit einer Quelle für ein Fluid unter Druck (2) oder mit der Aussenatmosphäre (A) verbinden kann.
EP84402581A 1984-01-17 1984-12-13 Notentlüftungseinrichtung für pneumatische Zylinderkolben Expired EP0149386B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400652 1984-01-17
FR8400652A FR2558216B1 (fr) 1984-01-17 1984-01-17 Dispositif de purge d'urgence pour verin pneumatique

Publications (2)

Publication Number Publication Date
EP0149386A1 EP0149386A1 (de) 1985-07-24
EP0149386B1 true EP0149386B1 (de) 1987-03-04

Family

ID=9300187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402581A Expired EP0149386B1 (de) 1984-01-17 1984-12-13 Notentlüftungseinrichtung für pneumatische Zylinderkolben

Country Status (5)

Country Link
US (1) US4690035A (de)
EP (1) EP0149386B1 (de)
JP (1) JPS60234102A (de)
DE (1) DE3462542D1 (de)
FR (1) FR2558216B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2575526B1 (fr) * 1984-12-28 1987-02-13 Telemecanique Electrique Ensemble de raccords fonctionnels pour verin pneumatique a montage combine pour assurer deux fonctions au moins
JP2613150B2 (ja) * 1992-03-19 1997-05-21 エスエムシー株式会社 空気圧アクチュエータの緩衝装置
US6715403B2 (en) 2001-10-12 2004-04-06 Caterpillar Inc Independent and regenerative mode fluid control system
US6701822B2 (en) 2001-10-12 2004-03-09 Caterpillar Inc Independent and regenerative mode fluid control system
EP1369633B1 (de) * 2002-06-07 2006-07-12 FESTO AG & Co Anschlussvorrichtung für Fluidleitungen
CN105351262A (zh) * 2015-11-20 2016-02-24 李晓勤 一种砚台模具制压气动机构
RU194506U1 (ru) * 2019-06-04 2019-12-12 Общество с ограниченной ответственностью "Камоцци Пневматика" Пневматический привод с цилиндром двухстороннего действия
CN113339566B (zh) * 2021-05-19 2022-09-30 合肥金星智控科技股份有限公司 取样设备断电断气保护装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506012A (en) * 1921-10-13 1924-08-26 Westinghouse Air Brake Co Quick-release valve
US1726102A (en) * 1927-09-24 1929-08-27 Nat Pneumatic Co Quick-release valve
US2888909A (en) * 1953-12-24 1959-06-02 Gratzmuller Jean Louis Liquid dumping valve arrangement for a hydraulic jack
US3099136A (en) * 1960-05-19 1963-07-30 Honeywell Regulator Co Fluid actuator
US3187637A (en) * 1962-06-05 1965-06-08 Westinghouse Air Brake Co Multi-position cylinder apparatus and control therefor
FR1400535A (fr) * 1964-04-15 1965-05-28 Renault Dispositif de contrôle pour appareil pneumatique
US3960059A (en) * 1974-12-09 1976-06-01 Caterpillar Tractor Co. Fast exhaust circuit for hydraulic jacks
FR2352188A1 (fr) * 1976-05-18 1977-12-16 Bouteille Daniel Dispositif de purge rapide d'une chambre d'un verin pneumatique
JPS6037443Y2 (ja) * 1976-10-08 1985-11-08 焼結金属工業株式会社 急速排気弁付シリンダ
JPS5526616U (de) * 1978-08-01 1980-02-21
FR2455231A1 (fr) * 1979-04-27 1980-11-21 Telemecanique Electrique Dispositif de blocage pour verin
JPS58134205A (ja) * 1982-02-05 1983-08-10 Ckd Corp 残圧排出装置
US4475442A (en) * 1982-02-08 1984-10-09 Vickers, Incorporated Power transmission

Also Published As

Publication number Publication date
JPH0423128B2 (de) 1992-04-21
FR2558216B1 (fr) 1988-05-20
JPS60234102A (ja) 1985-11-20
FR2558216A1 (fr) 1985-07-19
DE3462542D1 (en) 1987-04-09
US4690035A (en) 1987-09-01
EP0149386A1 (de) 1985-07-24

Similar Documents

Publication Publication Date Title
FR2657138A1 (fr) Partie de raccord rapide a organe de reduction de pression.
EP0149386B1 (de) Notentlüftungseinrichtung für pneumatische Zylinderkolben
EP0272176A1 (de) Hydraulischer Drehflügelantrieb, insbesondere für einen Flugzeugruderantrieb
FR2557253A1 (fr) Vanne dont l'ouverture fonctionne a la depression
EP0504032B1 (de) Redundant Schlussventil
FR2693248A1 (fr) Vanne du type à bille ou à boisseau équipé d'un insert.
FR2509831A1 (fr) Commande de remise en position pour soutenement a etancons hydrauliques, ainsi qu'une vanne de non-retour a commande hydraulique
FR2705753A1 (fr) Vanne à commande magnétique.
EP3599408B1 (de) Schnellkupplung für die lösbare verbindung von zwei rohren, durch die eine flüssigkeit unter druck fliesst
FR2834016A1 (fr) Pompe a jet
FR2748298A1 (fr) Dispositif de verin pneumatique
EP0330575A1 (de) Hydraulischer Kreislauf mit zugehörigem Sicherheitsventil für hydraulische Verbraucher
FR2629557A1 (fr) Clapet de non retour asservissable
EP0328472B1 (de) Anlasser-Verbindungsstück für die stufenlose Druckzufuhr in pneumatischen Anlagen
FR2658578A1 (fr) Dispositif a soupape d'arret evitant les fuites.
FR2658580A1 (fr) Soupape de coupure de pression pilotee, et soupape de pilotage.
WO2002057672A1 (fr) Vanne a pointeau a commande pneumatique
FR2591706A1 (fr) Soupape de surete a pilotage integre
EP0116500B1 (de) Fluidverteilern
FR2660726A1 (fr) Raccord - distributeur pour la commande d'actionneurs pneumatiques.
FR2524580A1 (fr) Perfectionnements aux installations pneumatiques et dispositif economiseur d'air comprime destine a etre monte sur de telles installations
FR2666634A1 (fr) Valve pneumatique.
FR2561798A1 (fr) Detendeur a mise sous pression progressive
EP0833013B1 (de) Vorrichtung zur hydraulischen Kontrolle eines Hebezylinders eines Ladearms eines landwirtschaftlichen Fahrzeugs
FR2915786A1 (fr) Raccord de type bloqueur a clapet et purge

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

17P Request for examination filed

Effective date: 19841214

AK Designated contracting states

Designated state(s): CH DE GB IT LI SE

17Q First examination report despatched

Effective date: 19860527

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE GB IT LI SE

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3462542

Country of ref document: DE

Date of ref document: 19870409

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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84402581.7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19991119

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991207

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19991217

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19991218

Year of fee payment: 16

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

Ref country code: GB

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

Effective date: 20001213

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 NON-PAYMENT OF DUE FEES

Effective date: 20001214

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

Ref country code: LI

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

Effective date: 20001231

Ref country code: CH

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

Effective date: 20001231

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

Effective date: 20001213

EUG Se: european patent has lapsed

Ref document number: 84402581.7

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: DE

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

Effective date: 20011002