FR2510228A1 - SYSTEM FOR CONNECTING AUTOMATIC PIPE CONNECTIONS TO LIQUID OR GASEOUS FLUID DELIVERY DEVICES - Google Patents

SYSTEM FOR CONNECTING AUTOMATIC PIPE CONNECTIONS TO LIQUID OR GASEOUS FLUID DELIVERY DEVICES Download PDF

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Publication number
FR2510228A1
FR2510228A1 FR8211822A FR8211822A FR2510228A1 FR 2510228 A1 FR2510228 A1 FR 2510228A1 FR 8211822 A FR8211822 A FR 8211822A FR 8211822 A FR8211822 A FR 8211822A FR 2510228 A1 FR2510228 A1 FR 2510228A1
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France
Prior art keywords
connector
fitting
devices
ring
screwing
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Granted
Application number
FR8211822A
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French (fr)
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FR2510228B1 (en
Inventor
Adriano Albertini
Vincenzo Masserdotti
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Metal Work SpA
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Metal Work SpA
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Publication of FR2510228A1 publication Critical patent/FR2510228A1/en
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Publication of FR2510228B1 publication Critical patent/FR2510228B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
    • F16L37/0915—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers with a separate member for releasing the coupling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The invention relates to a connecting arrangement for the automatic production of the connection between the connecting pieces, which run for example in a straight line, in an L-shape or a T-shape, of lines to the body of devices for releasing, controlling and using fluid or gaseous media, there being allocated to each of the corresponding branches or paths a quick-release connecting device which, for example, contains at least one ring having locking projections pointing towards the axis and inclined with respect thereto, as well as at least one unlocking bush, which lifts axially in the direction of the locking effect, and at least one seal. It is provided that, in order to attach each connecting piece to the body, an intermediate connecting tubular piece (8) is provided which has a threaded connecting piece (9) on the one side, used for screwing to the body, and a peg (11) on the opposite side, which can be coupled in the axial direction, without screwing, to one of the quick-release connecting devices of the arrangement, the intermediate connecting tubular piece (8) having a groove (12) which runs all the way round along the circumference and is intended to engage with the locking projections (4) on the ring (3) of the quick-release connecting device.

Description

La présente invention concerne, en général les raccords automatiques pour tuyaux de type flexible en polyethylèfle, po lypropylène et autres matières plastiques, et plus partiçulié- rement un système de connexion rapide de ces raccords automatiques aux moyens ou dispositifs destines a la distribution, le contrôle et l'utilisation de fluides liquides ou gazeux. The present invention relates, in general to automatic fittings for flexible type pipes made of polyethylene, polypropylene and other plastics, and more particularly to a system for rapid connection of these automatic fittings to means or devices intended for distribution, control. and the use of liquid or gaseous fluids.

En matière d'installations hydrauliques et pneumatiques utilisant des tuyaux flexibles, on connatt déjà diverses réalisations de raccords automatiques, fixes ou orientables, présentant différentes formes linéaires, en L, en T, etc..., et servant a connecter rapidement les tuyaux entre eux ou aux moyens de distribution, de contrôle et d'utilisation du fluide. In terms of hydraulic and pneumatic installations using flexible hoses, there are already known various embodiments of automatic fittings, fixed or adjustable, having different linear shapes, L, T, etc ..., and used to quickly connect the pipes between them or to the means of distribution, control and use of the fluid.

Lorsqu'ils sont employés simplement pour connecter des tuyaux entre eux, ces racc-ords automatiques, déjà bien connus, ne présentent aucun inconvénient particulier. Par contre, le problème est différent quand il s'agit de fixer lesdits raccords sur des corps, par exemple, de soupapes, de cylindres, de distributeurs et, en général, de moyens pour 1 'uti- lisation d'un fluide, afin de connecter sur ces corps des tuyaux de circulation dudit fluide.Dans ce cas, en effet, l'emploi de raccords automatiques montés selon la technique appliquée jusqu'a présent comporte des limitations et des inconvénients non négligea bl es
Les différents types de raccords, fixes ou orientables, sont actuellement montés par vissage et doivent donc, pour cela, posséder un tronçon fileté destiné a etre vissé dans l'orifice correspondant du corps concerné. La fixation des raccords par vissage est une opération lente et laborieuse, a exécuter avec des clés dont l'utilisation n'est pas toujours facile, en particulier, lorsque plusieurs raccords se trouvent placés l'un a coté de l'autre sur le même corps, llespa- ce entre ces raccords étant alors très restreint.When they are used simply to connect pipes to one another, these automatic couplings, already well known, have no particular disadvantage. On the other hand, the problem is different when it is a question of fixing said fittings on bodies, for example, of valves, cylinders, distributors and, in general, means for the use of a fluid, in order to connect to these bodies pipes for circulating said fluid. In this case, in fact, the use of automatic fittings mounted according to the technique applied until now has considerable limitations and drawbacks.
The different types of fittings, fixed or orientable, are currently mounted by screwing and must therefore, for this, have a threaded section intended to be screwed into the corresponding orifice of the body concerned. The fixing of the connections by screwing is a slow and laborious operation, to execute with keys whose use is not always easy, in particular, when several connections are placed one beside the other on the same body, the space between these connections then being very limited.

Aussi difficile et laborieux est le devissage- du troncon fileté pour retirer le raccord du corps quand il faut le remplacer. Also difficult and laborious is the unscrewing of the threaded section to remove the fitting from the body when it needs to be replaced.

Un autre inconvénient reside -dans le fait que pour satis faire les besoins très divers d'installation et d'interchangeabilié des raccords, il faut disposer toujours d'une vaste gamme de raccords de plusieurs dimensions, tous munis de douille le ou de tronçon fileté de fixation,--ce qui alourdit sensiblement les courts d'approvisionnement et de ma#gasinage. Another drawback resides in the fact that to meet the very diverse needs of installation and interchangeability of fittings, it is always necessary to have a wide range of fittings of several dimensions, all provided with socket or threaded section fixing, - which significantly increases the short supply and my # gasinage.

La présente invention a donc pour but de proposer un système de connexion des raccords automatiques aux moyens ou dispositifs de distributi-on, de contrôle et d'utilis-ation de fluides, permettant d'un coté d'eliminer-les inconvénients et les désavantages ci-dessus mentionnés et, de l'autre, d'assurer essentiellement - le montage facile et rapide, sans vissage, des raccords gr.â- ce a leur mode de construction et leurs caractéristiques d' autoblocage ; - l'interchangeabilité facile et rapide des raccords par simple deconnexion dans le sens axial, sans rotation et sans aucune action de dévissage - la réduction du rombre. de dimensions de raccord nécessaires, sans pour autant entraver la satisfaction des divers besoins des installations. The object of the present invention is therefore to propose a system for connecting automatic couplings to the means or devices for distributing, controlling and using fluids, making it possible, on the one hand, to eliminate the disadvantages and disadvantages. above mentioned and, on the other hand, to ensure essentially - the easy and fast assembly, without screwing, of the fittings thanks to their mode of construction and their self-locking characteristics; - quick and easy interchangeability of fittings by simple disconnection in the axial direction, without rotation and without any unscrewing action - reduction of the size. necessary connection dimensions, without hampering the satisfaction of the various needs of the installations.

Par conséquent, étant donné que chaque raccord automatique comprend au moins, sur les parties opposées, deux dispositifs de fixation rapide analogues -déjà bien connus- le système objet de l'invention se caractérise par le fait qu'il prévoit l'application et la fixation du raccord sur un corps a l'aide d'un moyen connecteur interposé présentant d'un côte une fixation filetée destinée a être vissée sur ledit corps et, du coté opposé, une queue ou tige prévue pour s accoupler, dans le sens axial et sans vissage ou rotation, a un des dispositifs de fixation rapide du raccord, les tuyaux pouvant être branchés sur l'autre ou les autres dispositifs de fixation dont le raccord est muni.  Consequently, since each automatic coupling comprises at least, on opposite parts, two similar quick-fixing devices - already well known - the system which is the subject of the invention is characterized in that it provides for the application and the fixing the connector to a body using an interposed connector means having on one side a threaded fixing intended to be screwed onto said body and, on the opposite side, a tail or rod provided for coupling, in the axial direction and without screwing or rotation, has one of the quick fixing devices for the fitting, the pipes being able to be connected to the other or the other fixing devices with which the fitting is provided.

L'invention va maintenant être décrite avec plus de détails en se référant a des modes de réalisation particulier, donnés a titre d'exemple seulement, et représentes aux dessins annexés sur lesquels
La figure 1 représente un exemple de corps de soupape ou de distributeur avec quelques raccords fixés et d'autres raccords soit en cours de montage, soit séparés ;
la figure 2 est une vue en coupe montrant l'application d'un raccord en L de corps de soupape a laide d'un mcyen connecteur ;
la figure 3 est une vue en coupe analogue d'un raccord automatique en T, c'est à dire à trois voies
la figure 4 est une vue en coupe, agrandie, d'un détail de l'accouplement du raccord au moyen connecteur.The invention will now be described in more detail with reference to particular embodiments, given by way of example only, and shown in the accompanying drawings in which
Figure 1 shows an example of a valve body or distributor with some fittings attached and other fittings either being assembled or separate;
Figure 2 is a sectional view showing the application of an L-shaped valve body fitting using a mcyen connector;
Figure 3 is a similar sectional view of an automatic T-connector, ie three-way
Figure 4 is an enlarged sectional view of a detail of the coupling of the connector to the connector means.

Dans ces dessins, le repère 1 désigne d'une manière géné- rale le corps du raccord, qui pt être rectiligne, en L, en
T, etc..., et qui comprend, pour chacune des branches ou voies 2, un dispositif de fixation rapide, lequel peut être un quelconque des dis-positifs connus.Par exemple, ce dispositif de fixation, comme le montre le dessin, comprend : au moine une bague de blocage 3 avec des ailettes d'arrêt 4 tournées vers le centre et inclinées par rapport a l'axe de la branche ou voie du raccord en direction opposée a celle de la déconnexion du moyen accouplé ; au moins une douille 5 guidée et pouvant se déplacer axialement vers les ailettes 4 de ladite bague pour annuler leur effet de blocage ; et au moins un joint 6 d'étan chéité sur e moyen accouplé.In these drawings, the reference 1 generally designates the body of the fitting, which can be straight, in L, in
T, etc ..., and which comprises, for each of the branches or tracks 2, a quick fixing device, which can be any of the known devices. For example, this fixing device, as shown in the drawing, comprises: at the monk a locking ring 3 with stop fins 4 turned towards the center and inclined relative to the axis of the branch or path of the connector in the direction opposite to that of the disconnection of the coupled means; at least one bush 5 guided and able to move axially towards the fins 4 of said ring to cancel their blocking effect; and at least one seal 6 for sealing on the coupled means.

Ledit raccord est destiné a être fixé au corps 7 des moyens normaux de distribution, de contrôle ou d'utilisation d'un fluide pour brancher sur ce corps un ou plusieurs tuyaux 7' de circulation de ce fluide, ces moyens étant, par-exempl#e, des soupapes, des distributeurs, des moteurs pneumatiques ou hydrauliques, des cylindres, etc... Said connector is intended to be fixed to the body 7 normal means for distributing, controlling or using a fluid to connect to this body one or more pipes 7 'for circulation of this fluid, these means being, for example #e, valves, distributors, pneumatic or hydraulic motors, cylinders, etc ...

Selon la présente invention, et comme il a été indiqué ci-dessus, le raccord 1 n'est pas directement fixé au corps 7 concerné, cette fixation étant assurée par un connecteur tubulaire 8 interpose. A cet effet, ce connecteur 8 présente un tronçon fileté 9 destiné a être visse dans# un orifice fileté 10 pratiqué dans le corps 7, et une queue ou tige 11 présentant une gorges périphérique intermédiaire 12 dans laquelle s'engagent les ailettes 4 de la bague de blocage du dispositif de fixation du raccord. According to the present invention, and as indicated above, the connector 1 is not directly fixed to the body 7 concerned, this fixing being ensured by a tubular connector 8 interposed. To this end, this connector 8 has a threaded section 9 intended to be screwed into # a threaded orifice 10 formed in the body 7, and a tail or rod 11 having an intermediate peripheral groove 12 in which the fins 4 of the locking ring of the fitting fixing device.

Dans la pratique, le connecteur tubulaire 8 est facilement et rap ement applicable, par vissage, au corps J, en n' importe quelle condition et egalement lorsque l'espace autour du connecteur est limité par la présence d'autres raccords ou elements similaires. In practice, the tubular connector 8 is easily and quickly applicable, by screwing, to the body J, in any condition and also when the space around the connector is limited by the presence of other fittings or similar elements.

Le vissage du connecteur 8 peut être réalisé, en effet, avec un clé tubulaire dont la manoeuvre n'exige pas- des espaces importants. The screwing of the connector 8 can be carried out, in fact, with a tubular key whose operation does not require large spaces.

Une fois le connecteur 8 fixé sur l-e corps 7, on peut monter que la queue ou tige 11 de-ce connecteur, par simple accouplement dans le sens axial et sans rotation, un raccord automatique de n'importe quelle forme, qui peut être éventuellement complété avec un tuyau ou des tuyaux. Le blocage du rac- cord sur la queue ou tige ll est assuré parles ailettes 4 de la bague 3 du dispositif de fixation du raccord, ces ailettes s'engageant dans la gorge périphérique 12 de- ladite-queue ou tige, comme le montre, en particulier, la figure 4. Once the connector 8 is fixed on the body 7, it can be mounted that the tail or rod 11 of this connector, by simple coupling in the axial direction and without rotation, an automatic connector of any shape, which can be optionally completed with hose or hoses. The locking of the connection on the tail or rod 11 is ensured by the fins 4 of the ring 3 of the attachment fixing device, these fins engaging in the peripheral groove 12 of said tail or rod, as shown, in particular, Figure 4.

Grâce à l'action exercée par les ailettes 4 de-la bague de blocage dans la gorge 12 de la queue ou tige 11-, le raccord se trouve fixé de fanon stable et étanche au connecteur 8 et, à travers celdi-ci, au corps 7 avec possibilité d'orientation autour de l'axe du connecteur. Thanks to the action exerted by the fins 4 of the locking ring in the groove 12 of the tail or rod 11, the connector is fixed with a stable and waterproof baleen to the connector 8 and, through the latter, to the body 7 with possibility of orientation around the axis of the connector.

Le blocage est donc facilement réversible puisqu'il suffit d'agir sur la douille de déblocage 5 pour annuler l'action des ailettes 4 de la bague 3 et obtenir la séparation du rac- cord. The locking is therefore easily reversible since it suffices to act on the unlocking sleeve 5 to cancel the action of the fins 4 of the ring 3 and obtain separation of the connection.

De-cette manière, le raccord 1 est non seulement facile à appliquer au corps 7, mais peut être facilement et rapidement séparé de ce corps pour assurer son interchangeabilite avec d'autres raccords, afin qu'on puisse associer au corps 7 des raccords et des tuyaux diversement orientés sans avoir jamais besoin de démonter, une fois vissé audit corps, le connecteur. In this way, the fitting 1 is not only easy to apply to the body 7, but can be easily and quickly separated from this body to ensure its interchangeability with other fittings, so that the body 7 can be associated with fittings and variously oriented pipes without ever having to disassemble, once screwed to said body, the connector.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits et représentés. On pourra y apporter de nombreuses modifications de détails sans sortir pour cela du cadre de l'invention.  Of course, the invention is not limited to the embodiments which have just been described and shown. Many modifications of details can be made without departing from the scope of the invention.

Claims (1)

R E V E N D I C A T I O N SO 10 - Système de connexion des raccurds automatiques pour tuyaux aux moyens ou dispositifs de distribution, de contrôle et d'utilisation de fluides liquides ou gazeux, ces raccords pouvant avoir n'importe quelle forme linéaire, en L, en T; etc. ei; etcomportant, de façon déjà connue, dans chacune des branches ou voies correspondantes, un dispositif de fixation rapide comprenant par exemple : au moins'une bague (3) avec ailet tes- (4) de blocage tournées vers l'axe et inclinées par rapport a celui-ci ; au moins une douille de déblocage (5) pouvant se déplacer axialement vers les ailettes de ladite bague pour annuler l'action de blocage ; et au moins un joint d'étan chiite ; caractérisé par le fait qu'il prévoit l'application et la fixation de chaque raccord a un corps a l'aide d'un moye-n connecteur tubulaire (8) présentant d'un côte un tron çon fileté (9) destine à être vissé sur ledit corps et, du coté oppose, une queue ou tige (11) prévue pour s2'accoupler, dans le sens axial, sans vissage, à un des dispositifs de fixation rapide du raccord, ledit moyen connecteur présentant une gorge (12) périphérique destinée à recevoir les ailettes d'une bague de blocage dudit dispositif de fixation.R E V E N D I C A T I O N SO 10 - System for connecting automatic couplings for pipes to means or devices for the distribution, control and use of liquid or gaseous fluids, these couplings can have any linear shape, in L, in T; etc. ei; andcomprising, in a manner already known, in each of the branches or corresponding tracks, a quick fixing device comprising for example: at least one ring (3) with tes- (4) blocking fin turned towards the axis and inclined relative to to this one; at least one unlocking sleeve (5) which can move axially towards the fins of said ring to cancel the locking action; and at least one seal of Shiite seal; characterized by the fact that it provides for the application and fixing of each fitting to a body using a hub-n tubular connector (8) having on one side a threaded section (9) intended to be screwed onto said body and, on the opposite side, a tail or rod (11) designed to couple, in the axial direction, without screwing, to one of the quick fixing devices of the connector, said connector means having a groove (12) device intended to receive the fins of a locking ring of said fixing device. 20 - Système de connexion, selon la revendication 1, dans lequel le raccord, ou chaque raccord, est accouplé, dans le sens axial, sans vissage ou rotation, à une queue ou tige (11) préalablement fixée au corps concerné, ledit raccord pouvant être séparé, toujours dans le sens axial et sans dévissage ou rotation de ladite queue ou tige, alors que celle-ci reste fixée audit corps. 20 - Connection system according to claim 1, wherein the fitting, or each fitting, is coupled, in the axial direction, without screwing or rotation, to a tail or rod (11) previously fixed to the body concerned, said fitting being able be separated, still in the axial direction and without unscrewing or rotating said tail or rod, while the latter remains fixed to said body. 30 - Système de connexion, selon les revendications l et 2, dans lequel le raccord, ou-chaque raccord, est fixe indirectement au corps concerné à l'aide d'un connecteur interposé assurant le branchement et le débranchement d'un des dispositifs de fixation rapide dont ledit raccord est muni.  30 - Connection system according to claims 1 and 2, wherein the fitting, or-each fitting, is fixed indirectly to the body concerned using an interposed connector ensuring the connection and disconnection of one of the devices quick fixing with which said connector is provided.
FR8211822A 1981-07-24 1982-07-06 SYSTEM FOR CONNECTING AUTOMATIC PIPE CONNECTIONS TO LIQUID OR GASEOUS FLUID DELIVERY DEVICES Expired FR2510228B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT05194/81A IT1168408B (en) 1981-07-24 1981-07-24 CONNECTION SYSTEM OF AUTOMATIC FITTINGS FOR PIPES TO DEVICES FOR DISPENSING, CONTROL AND USE OF LIQUID OR GASEOUS FLUIDS

Publications (2)

Publication Number Publication Date
FR2510228A1 true FR2510228A1 (en) 1983-01-28
FR2510228B1 FR2510228B1 (en) 1985-07-12

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DE (1) DE3221518C2 (en)
FR (1) FR2510228B1 (en)
IT (1) IT1168408B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187608A2 (en) * 1985-01-03 1986-07-16 SOCIETE DES FLEXIBLES ANOFLEX Société Anonyme dite Coupling of the quick-acting type for pressurized-fluid systems whereby the pressure can reach one hundred and fifty bar
FR2659415A1 (en) * 1990-03-09 1991-09-13 Sausse Daniel Quick connector
EP0459713A2 (en) * 1990-05-24 1991-12-04 Shigeru Suzuki Pipe connector

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512311A1 (en) * 1985-04-04 1986-10-16 Paul 8901 Stadtbergen Kienle Rapid-connector cartridge for flexible lines
DE3823870C2 (en) * 1988-07-14 1997-06-05 Behr Gmbh & Co Pipe connection, in particular for the refrigerant circuit of air conditioning systems in motor vehicles
GB2458989A (en) * 2008-04-08 2009-10-14 Mao-Chang Lin A joint for one of a water inlet or water outlet of a filter cylinder or a filter casing

Citations (2)

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Publication number Priority date Publication date Assignee Title
FR1474023A (en) * 1966-01-21 1967-03-24 Pneumelec S A Pipe connection device
DE2734117A1 (en) * 1977-05-23 1978-11-30 Uniflex Spa QUICK HOSE COUPLING

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Publication number Priority date Publication date Assignee Title
GB1139435A (en) * 1966-08-01 1969-01-08 Edward Barber & Company Ltd Improvements in and relating to taps or valves for liquid or gas flow control
SE372607B (en) * 1972-02-04 1974-12-23 O Normark
FR2232731B1 (en) * 1973-06-05 1976-09-17 Legris France Sa
FR2283381A1 (en) * 1974-03-15 1976-03-26 Sogemo Automatisation IMPROVEMENTS IN CONNECTION SYSTEMS FOR DUCTS, ESPECIALLY FOR SEMI-RIGID PLASTIC TUBES
FR2389306A7 (en) * 1977-04-30 1978-11-24 Sueddeutsche Kuehler Behr HEAT EXCHANGER PROVIDED IN A CONTAINER CONTAINING A COOLING FLUID, IN PARTICULAR OIL COOLER

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1474023A (en) * 1966-01-21 1967-03-24 Pneumelec S A Pipe connection device
DE2734117A1 (en) * 1977-05-23 1978-11-30 Uniflex Spa QUICK HOSE COUPLING

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0187608A2 (en) * 1985-01-03 1986-07-16 SOCIETE DES FLEXIBLES ANOFLEX Société Anonyme dite Coupling of the quick-acting type for pressurized-fluid systems whereby the pressure can reach one hundred and fifty bar
EP0187608A3 (en) * 1985-01-03 1987-05-13 Anoflex Flexibles Coupling of the quick-acting type for pressurized-fluid systems whereby the pressure can reach one hundred and fifty bar
FR2659415A1 (en) * 1990-03-09 1991-09-13 Sausse Daniel Quick connector
EP0459713A2 (en) * 1990-05-24 1991-12-04 Shigeru Suzuki Pipe connector
EP0459713A3 (en) * 1990-05-24 1992-05-27 Fujine Sangyo Company Limited Pipe connector

Also Published As

Publication number Publication date
IT8105194A0 (en) 1981-07-24
DE3221518A1 (en) 1983-02-10
DE3221518C2 (en) 1985-07-04
FR2510228B1 (en) 1985-07-12
IT1168408B (en) 1987-05-20

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