EP0874761A1 - Nozzle for dispensing a liquid or pasty material - Google Patents

Nozzle for dispensing a liquid or pasty material

Info

Publication number
EP0874761A1
EP0874761A1 EP97900238A EP97900238A EP0874761A1 EP 0874761 A1 EP0874761 A1 EP 0874761A1 EP 97900238 A EP97900238 A EP 97900238A EP 97900238 A EP97900238 A EP 97900238A EP 0874761 A1 EP0874761 A1 EP 0874761A1
Authority
EP
European Patent Office
Prior art keywords
piece according
sleeve
rod
end piece
plug
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
EP97900238A
Other languages
German (de)
French (fr)
Other versions
EP0874761B1 (en
Inventor
Jean-Louis Bougamont
Pascal Hennemann
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.)
Albea Le Treport SAS
Original Assignee
S O F A B SA
S O F A B SA
Sofab 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 S O F A B SA, S O F A B SA, Sofab SA filed Critical S O F A B SA
Publication of EP0874761A1 publication Critical patent/EP0874761A1/en
Application granted granted Critical
Publication of EP0874761B1 publication Critical patent/EP0874761B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/047—Deformable containers producing the flow, e.g. squeeze bottles characterised by the outlet or venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/048—Deformable containers producing the flow, e.g. squeeze bottles characterised by the container, e.g. this latter being surrounded by an enclosure, or the means for deforming it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2075—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is raised by the pressure of the contents and thereby opening the valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form

Definitions

  • the present invention relates to a nozzle for dispensing liquid or pasty products.
  • nozzles for dispensing liquid or pasty products.
  • the exhaust valve is located inside the pump mechanism ensuring the evacuation of the product.
  • This pump is actuated by a pusher forming the nozzle-diffuser.
  • the nozzle being mounted downstream of the exhaust valve, there remains a volume of product exposed to the air between said valve and the nozzle ejection orifice.
  • this volume of product which is not protected from the external atmosphere can be contaminated by bacterial pollution or else dry and thus obstruct the ejection duct.
  • the CH-A-178923 offers a tip comprising
  • a socket provided, on the one hand with an end for connection to the tank and, on the other hand, with an ejection orifice
  • a movable shutter housed inside said socket, consisting of a rod carrying, at its external end, a plug forming with the ejection orifice, an exhaust valve, and at its internal end, a wall transverse providing a passage for the product and cooperating with elastic return means of the movable shutter to a closed position where the plug is sealingly engaged in the ejection orifice.
  • the pressure differential which controls both the opening and the closing of the exhaust valve is small (of the order of 0.1 bar).
  • the object of the present invention is to solve this technical problem satisfactorily by improving the sealing of the endpiece with a view to using it for sterile products.
  • a socket provided, on the one hand with an end for connection to the tank and, on the other hand, with an ejection orifice
  • a movable shutter housed inside said socket, consisting of a rod carrying, at its external end, a plug forming with the ejection orifice, an exhaust valve, and at its internal end, a wall transverse providing a passage for the product and cooperating with elastic return means of the movable shutter to a closed position where the plug is sealingly engaged in the ejection orifice, characterized in that it further comprises , an intake valve consisting of a deformable peripheral lip sealingly dividing the passage for the product around the rod into an upstream compartment and a downstream compartment.
  • said lip is integral with the rod and its free end is, in the closed position of the valve, in contact with bearing against the internal wall of the sleeve.
  • said lip is carried by a crown coaxial with the rod.
  • said transverse wall is made in one piece with said crown.
  • the upstream end of the lip is integral with the rod.
  • said transverse wall is elastically deformable and is retained by its peripheral edge at the connection end of the sleeve, thereby forming an elastic return means of the shutter.
  • said rod is axial and defines, with the transverse wall, a peripheral shoulder.
  • said elastic return means comprise a helical spring surrounding the stem of the shutter in bearing, by its rear end, on the shoulder and by its front end, on the internal wall of the sleeve.
  • the front end of the spring bears on longitudinal ribs extending along the internal wall of the sleeve.
  • the front end of the spring bears in the bottom of an annular groove, formed on the internal wall of the sleeve and delimited on its internal edge by a collar for guiding the rod.
  • the plug consists, on the one hand, of a body the lateral face of which, in the closed position, is in leaktight support against the internal edge of the ejection orifice, and on the other hand, a head projecting from the outside of the socket.
  • the ejection orifice has a frustoconical profile corresponding to that of the body of the plug.
  • the inner edge of the ejection orifice is provided with an annular ring on which the lateral face of the body of the stopper comes into watertight support when it is closed.
  • the sleeve has a pointed profile and the cap head has a curvilinear profile whose curvature is determined so as to ensure continuity of appearance of the pointed profile.
  • connection end of the bushing has ribs on the internal wall forming a stop for the transverse wall.
  • said rod is made integral with the transverse wall by being engaged in a tightening sleeve carrying said wall.
  • the end piece further comprises a removable cover intended to cover the socket and the top of which abuts by its internal face against the plug to guarantee the tightness of the closure.
  • transverse wall is extended towards the reservoir by a lug engaged in a sleeve protruding inside said reservoir.
  • the nozzle of the invention has a combination of two valves allowing the control of the seal, which preserves the entire contents of the tank from any contact with the outside atmosphere and keeps thus the risks of degradation or bacterial contamination of the product.
  • This nozzle can be simply mounted on the tank from the inside or from the outside, directly or indirectly via a fitting. The product in the upstream compartment of the nozzle is protected in the same way and with the same efficiency as if it were in the tank.
  • the two valves which are mounted on the same part operate in the same direction but with displacements oriented along separate axes.
  • FIG. 1 is a view in longitudinal section of a first embodiment of the end piece of the invention, in the closed position and mounted on a reservoir,
  • FIG. 2 is a view in longitudinal section of the nozzle of FIG. 1, in the open position
  • - Figure 3 is a sectional view of the hood covering the bushing shown, in turn, in external view, and in the closed position
  • - Figure 4 is a sectional view of a second embodiment of the nozzle
  • FIGS. 5a and 5b show sectional views of a third embodiment of the tip of the invention respectively in the closed and open position.
  • the nozzle E shown in Figure 1 is intended to be mounted on a reservoir R which is here formed of a flexible bag filled with liquid or pasty product P and which is hermetically attached to a connector D.
  • the bag R is capable of being pressurized either by direct manual action, or by means of pallets T mounted sliding on an upright M secured to the connection D. In this way, the bag R is kept inside a rigid structure.
  • the end piece E comprises a socket 1 provided, on the one hand with an end 11 for connection to the connector D of the pocket R, via a ring B, and on the other hand with an orifice eject 10.
  • the end piece E further comprises a movable shutter 2, housed inside the socket 1 by providing a passage for the product P, from the connection D to the ejection orifice 10.
  • the shutter 2 consists of a rod 21 carrying at its outer end a plug 20 forming with the ejection orifice 10, an exhaust valve.
  • the internal end of the rod 21 is provided with a rigid transverse wall 22 cooperating with return means of the shutter.
  • the wall 22 is made integral with the rod 21 by being either produced in one piece with the latter, or, as shown in FIGS. 1 and 2, by being carried by a tightening sleeve 24 produced in the form of a separate part, in which the internal end of the rod 21 is engaged.
  • the rod 21 is axial and defines, with the wall 22, a peripheral shoulder 22a which extends radially towards the internal wall of the sleeve 1 by an elastically deformable peripheral lip 23 forming an intake valve. .
  • the lip 23 is made in one piece with the wall 22 and the sleeve 24 by forming a crown. In the closed position of the valve, the lip 23 thus divides in leaktight manner, the passage for the product into an upstream compartment located on the side of the end 11 of the socket 1 capable of communicating with the reservoir R and a downstream compartment capable of communicate with the outside, through port 10.
  • the lip 23 thus forms a coaxial crown secured to the rod 21 by its upstream end while its free downstream end is, in the closed position shown in FIG. 1, in contact with contact against the internal wall of the sleeve 1.
  • the shutter 2 is, here, equipped with return means formed by a spring.
  • the return spring 3 coaxially surrounds the rod 21 and is supported by its rear end turn on the shoulder 22a, thereby recalling the movable shutter 2 in its closed position.
  • the front end turn of the spring 3 is supported on longitudinal ribs 12, extending on the internal wall of the sleeve 1 in the vicinity of the orifice 10 with a length determined according to the characteristics of the spring.
  • the plug 20 consists of a body 20a, the lateral face of which is, in the closed position, in leaktight contact against the internal edge 10a of the ejection orifice 10 thus forming the seat of the exhaust valve.
  • the sealed support contact is thus produced between two conical surfaces. It is possible to provide, in another embodiment (not shown) an annular ring, produced on the inner edge 10a of the ejection orifice 10. Contact is then ensured between the lateral face of the body 20a of the plug
  • the body 20a is extended by a head 20b which projects forwardly outside the socket 1.
  • the ejection orifice 10 has a frustoconical profile corresponding to that of the body 20a of the plug 20.
  • the socket 1 has a pointed profile, while the head 20b of the plug 20 has a curvilinear profile whose curvature is determined so as to ensure continuity of appearance of the pointed profile.
  • the shutter 2 moves forwards from its rear closed position where the plug 20 is engaged and retained in a sealed manner in ejection port 10.
  • This movement can only be carried out on the condition that the pressure exerted exceeds a threshold determined by the calibration of the helical spring 3 which compresses under the effect of the thrust.
  • the product P then elastically deforms the lip 23 and penetrates by laterally bypassing the wall 22 in the downstream compartment. Then inside the downstream compartment, the product P is directed through the turns of the spring 3, in the space between the internal wall of the sleeve 1 on the one hand and the sleeve 24 and / or the rod 21 of the shutter 2 on the other hand, towards the ejection orifice 10 by pushing and bypassing the body 20a of the plug 20 before escaping to the outside.
  • the ejection mechanism can be adjusted by providing, for example, that the spring 3 is still slightly compressed in the closed position of the shutter so as to strengthen the seal.
  • connection end 11 of the sleeve 1 or the connection D may have on its internal wall ribs 11a forming rear stops for the wall 22 when the shutter returns to the closed position.
  • the ribs 11a are formed by the edges of the connector D.
  • the end piece is provided with a removable cover 4 intended to cover the socket 1.
  • the top of the cover 4 has a hollow part 40 where the wall is thinned and which comes to bear, by its internal face, against the head 20b of the plug 20 to guarantee the tightness of the closure.
  • the cover 4 is, for example, screwed, on the outside, on the end 11 of connection of the socket 1, or on an outer ring or, as shown in FIG. 3, directly on the wall of the rigid tank R.
  • the wall of the reservoir R is provided with ribs N forming threads which cooperate with corresponding ribs 41, formed on the internal wall of the cover 4, to ensure screwing.
  • the position and the geometry of the ribs 41 and N are determined, so as to ensure the support of the hollow part 40 on the plug 20 at the end of screwing.
  • the cover is, if necessary, provided with an internal stiffening element 42 (see FIGS. 5a, 5b) bearing on the upper part of the container R.
  • the wall 22, carrying the peripheral lip 23 of the intake valve is extended towards the reservoir R by a lug 25, which is engaged in a sleeve 5, itself housed in the connection D and protruding inside the tank R.
  • the sleeve 5 is, if necessary, integral with the internal wall of the connection end 11 of the socket 1 or of the connection D (see Figures 5a, 5b).
  • the connection end 11 is, here, screwed onto the connection D and has a peripheral flange 11a.
  • the sleeve 5 has a shoulder 50 disposed opposite the rear face 24 of the wall 22.
  • the front end of the spring 3 is supported in the bottom of an annular groove 13, formed on the internal wall from the top of the sleeve 1.
  • the groove 13 is delimited on its internal edge by a collar 14 ensuring the guiding of the rod 21, during its axial movement.
  • the free internal edge 14a of the collar 14 can also serve as a stop for the sleeve 24, during its axial displacement with the rod 21.
  • the lip 23 is very long (as in the embodiment of FIGS. 5a, 5b ) its free end can engage, at least partially in the groove 13 when the shutter 2 is in the open position.
  • This space is narrow but it is adapted to the viscosity of the product P so as to slow its flow from the reservoir R towards the interior volume of the socket 1. Then, the product deforms the lip 23 and enters the downstream compartment of the socket 1.
  • the transverse wall 22 is elastically deformable and is retained at the connection end 11 of the sleeve 1, thereby forming an elastic return means for the shutter 2.
  • the wall 22 and the lip 23 are joined by a central collar 26 which is tightened on a constriction 21a of the rod 21.
  • the wall 22 is perforated so as to provide passages for the product P between the reservoir R and the upstream compartment of the sleeve.

Abstract

PCT No. PCT/FR97/00021 Sec. 371 Date Jul. 8, 1998 Sec. 102(e) Date Jul. 8, 1998 PCT Filed Jan. 7, 1997 PCT Pub. No. WO97/25253 PCT Pub. Date Jul. 17, 1997A nozzle for dispensing a liquid or semi-liquid substance (P) and designed to be mounted on a tank (R) suitable for being put under pressure. The nozzle is of the type comprising a thimble (1) and moving shutter (2) housed inside the thimble. The thimble (1) is provided with a coupling end (11) for coupling to the tank (R) and an ejection orifice (10). The shutter (21) is constituted by a rod (21) carrying a plug (20) at an outer end thereof. The plug (20) cooperates with the ejection orifice (10) to form a delivery valve. The rod (21) also carries a transverse wall (22) at an inner end thereof. The wall (22) leaves a passage for the substance (P) and cooperates with a resilient return means (3) for returning the moving shutter (2) towards a closed position in which the plug (20) is engaged in sealed manner in the ejection orifice (10). The nozzle further comprises an admission valve constituted by a deformable peripheral lip (23) around the rod (21) which subdivides the passage for the substance (P) in sealed manner into an upstream compartment and a downstream compartment.

Description

EMBOUT DE DISTRIBUTION DE PRODUITS LIQUIDES OU PATEUX DISPENSING TIP FOR LIQUID OR PASTY PRODUCTS
La présente invention concerne un embout de distribution de produits liquides ou pâteux. II existe déjà des embouts de distribution destinés à être montés sur des réservoirs et susceptibles d'être mis sous pression.The present invention relates to a nozzle for dispensing liquid or pasty products. There are already distribution nozzles intended to be mounted on tanks and capable of being pressurized.
Généralement, le clapet d'échappement est situé à l'intérieur du mécanisme de la pompe assurant l'évacuation du produit. Cette pompe est actionnée par un poussoir formant l'embout-diffuseur. Cependant, l'embout étant monté en aval du clapet d'échappement, il reste un volume de produit exposé à l'air entre ledit clapet et l'orifice d'éjection de l'embout.Generally, the exhaust valve is located inside the pump mechanism ensuring the evacuation of the product. This pump is actuated by a pusher forming the nozzle-diffuser. However, the nozzle being mounted downstream of the exhaust valve, there remains a volume of product exposed to the air between said valve and the nozzle ejection orifice.
Dans certains domaines d'application et notamment en pharmacie et en cosmétique, ce volume de produit qui n'est pas protégé de l'atmosphère extérieure peut être contaminé par la pollution bactérienne ou bien sécher et obstruer ainsi le conduit d'éjection.In certain fields of application and in particular in pharmacy and in cosmetics, this volume of product which is not protected from the external atmosphere can be contaminated by bacterial pollution or else dry and thus obstruct the ejection duct.
Dans ces conditions, le produit restant dans le réservoir devient inutilisable.Under these conditions, the product remaining in the tank becomes unusable.
Pour remédier à cette difficulté, le CH-A-178923 propose un embout comprenantTo remedy this difficulty, the CH-A-178923 offers a tip comprising
- une douille pourvue, d'une part d'une extrémité de raccordement au réservoir et d'autre part, d'un orifice d'éjection,a socket provided, on the one hand with an end for connection to the tank and, on the other hand, with an ejection orifice,
- un obturateur mobile logé à l'intérieur de ladite douille, constitué d'une tige portant, à son extrémité externe, un bouchon formant avec l'orifice d'éjection, un clapet d'échappement, et à son extrémité interne, une paroi transversale ménageant un passage pour le produit et coopérant avec des moyens de rappel élastique de l'obturateur mobile vers une position de fermeture où le bouchon est engagé de manière étanche dans l'orifice d'éjection. Toutefois, l'obturateur étant actionné manuellement, le différentiel de pression qui commande tant l'ouverture que la fermeture du clapet d'échappement, est faible (de l'ordre de 0,1 bar).- a movable shutter housed inside said socket, consisting of a rod carrying, at its external end, a plug forming with the ejection orifice, an exhaust valve, and at its internal end, a wall transverse providing a passage for the product and cooperating with elastic return means of the movable shutter to a closed position where the plug is sealingly engaged in the ejection orifice. However, the shutter being actuated manually, the pressure differential which controls both the opening and the closing of the exhaust valve, is small (of the order of 0.1 bar).
Il en résulte qu'après relâchement de l'obturateur et fermeture du clapet d'échappement, l'étanchéité n'est pas suffisamment forte pour que toute reprise d'air soit évitée.As a result, after the shutter is released and the exhaust valve is closed, the seal is not strong enough for any air intake to be avoided.
Dans ces conditions, il subsiste un risque de pollution du produit. La présente invention a pour but de résoudre ce problème technique de manière satisfaisante en améliorant l'étanchéité de l'embout en vue de l'utiliser pour des produits stériles.Under these conditions, there remains a risk of product pollution. The object of the present invention is to solve this technical problem satisfactorily by improving the sealing of the endpiece with a view to using it for sterile products.
Ce but est atteint, selon l'invention, au moyen d'un embout destiné à être monté sur un réservoir, susceptible d'être mis sous pression du type comprenantThis object is achieved, according to the invention, by means of a nozzle intended to be mounted on a tank, capable of being pressurized of the type comprising
- une douille pourvue, d'une part d'une extrémité de raccordement au réservoir et d'autre part, d'un orifice d'éjection,a socket provided, on the one hand with an end for connection to the tank and, on the other hand, with an ejection orifice,
- un obturateur mobile logé à l'intérieur de ladite douille, constitué d'une tige portant, à son extrémité externe, un bouchon formant avec l'orifice d'éjection, un clapet d'échappement, et à son extrémité interne, une paroi transversale ménageant un passage pour le produit et coopérant avec des moyens de rappel élastique de l'obturateur mobile vers une position de fermeture où le bouchon est engagé de manière étanche dans l'orifice d'éjection, caractérisé en ce qu'il comprend en outre, un clapet d'admission constitué d'une lèvre périphérique deformable divisant de manière étanche le passage pour le produit autour de la tige en un compartiment amont et un compartiment aval.- a movable shutter housed inside said socket, consisting of a rod carrying, at its external end, a plug forming with the ejection orifice, an exhaust valve, and at its internal end, a wall transverse providing a passage for the product and cooperating with elastic return means of the movable shutter to a closed position where the plug is sealingly engaged in the ejection orifice, characterized in that it further comprises , an intake valve consisting of a deformable peripheral lip sealingly dividing the passage for the product around the rod into an upstream compartment and a downstream compartment.
Selon un mode de réalisation avantageux, ladite lèvre est solidaire de la tige et son extrémité libre est, en position de fermeture du clapet, en contact d'appui contre la paroi interne de la douille.According to an advantageous embodiment, said lip is integral with the rod and its free end is, in the closed position of the valve, in contact with bearing against the internal wall of the sleeve.
Selon un mode de réalisation particulier, ladite lèvre est portée par une couronne coaxiale à la tige.According to a particular embodiment, said lip is carried by a crown coaxial with the rod.
De préférence, ladite paroi transversale est réalisée d'une seule pièce avec ladite couronne.Preferably, said transverse wall is made in one piece with said crown.
Selon un autre mode de réalisation, l'extrémité amont de la lèvre est solidaire de la tige.According to another embodiment, the upstream end of the lip is integral with the rod.
Selon encore un autre mode de réalisation, ladite paroi transversale est élastiquement deformable et est retenue par son bord périphérique à l'extrémité de raccordement de la douille en formant ainsi un moyen de rappel élastique de l'obturateur.According to yet another embodiment, said transverse wall is elastically deformable and is retained by its peripheral edge at the connection end of the sleeve, thereby forming an elastic return means of the shutter.
Selon une caractéristique avantageuse, ladite tige est axiale et définit, avec la paroi transversale, un épaulement périphérique.According to an advantageous characteristic, said rod is axial and defines, with the transverse wall, a peripheral shoulder.
Selon une variante de réalisation, lesdits moyens de rappel élastique comprennent un ressort hélicoïdal entourant la tige de l'obturateur en prenant appui, par son extrémité arrière, sur l'épaulement et par son extrémité avant, sur la paroi interne de la douille.According to an alternative embodiment, said elastic return means comprise a helical spring surrounding the stem of the shutter in bearing, by its rear end, on the shoulder and by its front end, on the internal wall of the sleeve.
Selon une caractéristique particulière de cette variante, l'extrémité avant du ressort prend appui sur des nervures longitudinales s'étendant le long de la paroi interne de la douille.According to a particular characteristic of this variant, the front end of the spring bears on longitudinal ribs extending along the internal wall of the sleeve.
Selon une autre caractéristique de cette variante l'extrémité avant du ressort prend appui dans le fond d'une gorge annulaire, ménagée sur la paroi interne de la douille et délimitée sur son bord interne par un collet de guidage de la tige. Selon un autre mode de réalisation, le bouchon est constitué, d'une part, d'un corps dont la face latérale, en position de fermeture, est en appui étanche contre le bord intérieur de l'orifice d'éjection, et d'autre part, d'une tête faisant saillie à l'extérieur de la douille.According to another characteristic of this variant, the front end of the spring bears in the bottom of an annular groove, formed on the internal wall of the sleeve and delimited on its internal edge by a collar for guiding the rod. According to another embodiment, the plug consists, on the one hand, of a body the lateral face of which, in the closed position, is in leaktight support against the internal edge of the ejection orifice, and on the other hand, a head projecting from the outside of the socket.
Selon une variante spécifique, l'orifice d'éjection a un profil tronconique correspondant à celui du corps du bouchon. Le cas échéant, le bord intérieur de l'orifice d'éjection est pourvu d'un jonc annulaire sur lequel la face latérale du corps du bouchon vient en appui étanche lors de sa fermeture.According to a specific variant, the ejection orifice has a frustoconical profile corresponding to that of the body of the plug. Where appropriate, the inner edge of the ejection orifice is provided with an annular ring on which the lateral face of the body of the stopper comes into watertight support when it is closed.
Selon encore un autre mode de réalisation, la douille a un profil en ogive et la tête du bouchon a un profil curviligne dont la courbure est déterminée de façon à assurer une continuité d'aspect du profil en ogive.According to yet another embodiment, the sleeve has a pointed profile and the cap head has a curvilinear profile whose curvature is determined so as to ensure continuity of appearance of the pointed profile.
Selon encore d'autres caractéristiques, l'extrémité de raccordement de la douille comporte sur la paroi interne des nervures formant butée pour la paroi transversale. Selon encore une autre caractéristique, ladite tige est rendue solidaire de la paroi transversale en étant engagée dans un manchon serrant portant ladite paroi.According to yet other characteristics, the connection end of the bushing has ribs on the internal wall forming a stop for the transverse wall. According to yet another characteristic, said rod is made integral with the transverse wall by being engaged in a tightening sleeve carrying said wall.
De préférence, l'embout comprend en outre, un capot amovible destiné à coiffer la douille et dont le sommet vient en appui par sa face interne contre le bouchon pour garantir l'étanchéité de la fermeture.Preferably, the end piece further comprises a removable cover intended to cover the socket and the top of which abuts by its internal face against the plug to guarantee the tightness of the closure.
Il est aussi possible de prévoir que ladite paroi transversale se prolonge vers le réservoir par un ergot engagé dans un manchon faisant saillie à l'intérieur dudit réservoir.It is also possible to provide that said transverse wall is extended towards the reservoir by a lug engaged in a sleeve protruding inside said reservoir.
L'embout de l'invention possède une combinaison de deux clapets permettant la maîtrise de l'étanchéité, ce qui préserve l'intégralité du contenu du réservoir de tout contact avec l'atmosphère extérieure et écarte ainsi les risques de dégradation ou de contamination bactérienne du produit. Cet embout peut être monté de façon simple sur le réservoir par l'intérieur ou par l'extérieur, directement ou indirectement par l'intermédiaire d'un raccord. Le produit qui se trouve dans le compartiment amont de l'embout est protégé de la même façon et avec la même efficacité que s'il était dans le réservoir.The nozzle of the invention has a combination of two valves allowing the control of the seal, which preserves the entire contents of the tank from any contact with the outside atmosphere and keeps thus the risks of degradation or bacterial contamination of the product. This nozzle can be simply mounted on the tank from the inside or from the outside, directly or indirectly via a fitting. The product in the upstream compartment of the nozzle is protected in the same way and with the same efficiency as if it were in the tank.
Les deux clapets qui sont montés sur la même pièce fonctionnent dans le même sens mais avec des déplacements orientés selon des axes distincts.The two valves which are mounted on the same part operate in the same direction but with displacements oriented along separate axes.
La génération d'une pression, au-delà d'un certain seuil, au sein du produit, et à l'intérieur du réservoir, provoque le déplacement de l'obturateur et l'éjection du produit. En deçà de ce seuil, l'obturateur est en position de fermeture étanche sur l'embout par action des moyens de rappel. En outre, la structure de l'embout interdit toute sortie et toute fuite accidentelle du produit vers l'extérieur. Le capot coiffant la douille et appuyant sur le bouchon de l'obturateur maintient celui-ci en position de fermeture étanche contre le siège du clapet. Cette disposition garantit l'étanchéité de l'embout même si une pression est générée de manière accidentelle au sein du produit dans le réservoir.The generation of a pressure, beyond a certain threshold, within the product, and inside the tank, causes the displacement of the shutter and the ejection of the product. Below this threshold, the shutter is in the sealed closure position on the end piece by the action of the return means. In addition, the structure of the nozzle prevents any accidental release and any leakage of the product to the outside. The cover covering the socket and pressing the plug of the shutter keeps the latter in the sealed closure position against the valve seat. This arrangement guarantees the tightness of the nozzle even if pressure is accidentally generated within the product in the tank.
L'invention sera mieux comprise à la lecture de la description qui va suivre accompagnée des dessins sur lesquels :The invention will be better understood on reading the description which follows, accompanied by the drawings in which:
- la figure 1 est une vue en coupe longitudinale d'un premier mode de réalisation de l'embout de l'invention, en position de fermeture et monté sur un réservoir,FIG. 1 is a view in longitudinal section of a first embodiment of the end piece of the invention, in the closed position and mounted on a reservoir,
- la figure 2 est une vue en coupe longitudinale de l'embout de la figure 1 , en position d'ouverture,FIG. 2 is a view in longitudinal section of the nozzle of FIG. 1, in the open position,
- la figure 3 est une vue en coupe du capot coiffant la douille représentée, quant à elle, en vue extérieure, et en position de fermeture, - la figure 4 est une vue en coupe d'un second mode de réalisation de l'embout,- Figure 3 is a sectional view of the hood covering the bushing shown, in turn, in external view, and in the closed position, - Figure 4 is a sectional view of a second embodiment of the nozzle ,
- les figures 5a et 5b représentent des vues en coupe d'un troisième mode de réalisation de l'embout de l'invention respectivement en position de fermeture et d'ouverture. L'embout E représenté sur la figure 1 est destiné à être monté sur un réservoir R qui est ici formé d'une poche souple remplie de produit liquide ou pâteux P et qui est fixée hermétiquement à un raccord D.- Figures 5a and 5b show sectional views of a third embodiment of the tip of the invention respectively in the closed and open position. The nozzle E shown in Figure 1 is intended to be mounted on a reservoir R which is here formed of a flexible bag filled with liquid or pasty product P and which is hermetically attached to a connector D.
La poche R est susceptible d'être mise sous pression soit par action manuelle directe, soit par le biais de palettes T montées coulissantes sur un montant M solidaire au raccord D. De cette façon, la poche R est maintenue à l'intérieur d'une structure rigide.The bag R is capable of being pressurized either by direct manual action, or by means of pallets T mounted sliding on an upright M secured to the connection D. In this way, the bag R is kept inside a rigid structure.
Selon l'invention, l'embout E comporte une douille 1 pourvue, d'une part d'une extrémité 11 de raccordement au raccord D de la poche R, via une bague B, et d'autre part d'un orifice d'éjection 10.According to the invention, the end piece E comprises a socket 1 provided, on the one hand with an end 11 for connection to the connector D of the pocket R, via a ring B, and on the other hand with an orifice eject 10.
L'embout E comporte en outre, un obturateur mobile 2, logé à l'intérieur de la douille 1 en ménageant un passage pour le produit P, depuis le raccord D jusqu'à l'orifice d'éjection 10.The end piece E further comprises a movable shutter 2, housed inside the socket 1 by providing a passage for the product P, from the connection D to the ejection orifice 10.
L'obturateur 2 est constitué d'une tige 21 portant à son extrémité externe un bouchon 20 formant avec l'orifice d'éjection 10, un clapet d'échappement.The shutter 2 consists of a rod 21 carrying at its outer end a plug 20 forming with the ejection orifice 10, an exhaust valve.
L'extrémité interne de la tige 21 est pourvue d'une paroi transversale rigide 22 coopérant avec des moyens de rappel de l'obturateur. La paroi 22 est rendue solidaire de la tige 21 en étant, soit réalisée d'une seule pièce avec celle-ci, soit, comme représenté sur les figures 1 et 2, en étant portée par un manchon serrant 24 réalisé sous forme d'une pièce séparée, dans lequel est engagée l'extrémité interne de la tige 21.The internal end of the rod 21 is provided with a rigid transverse wall 22 cooperating with return means of the shutter. The wall 22 is made integral with the rod 21 by being either produced in one piece with the latter, or, as shown in FIGS. 1 and 2, by being carried by a tightening sleeve 24 produced in the form of a separate part, in which the internal end of the rod 21 is engaged.
Dans le mode de réalisation représenté, la tige 21 est axiale et définit avec, la paroi 22, un épaulement périphérique 22a qui se prolonge radialement en direction de la paroi interne de la douille 1 par une lèvre périphérique 23 élastiquement deformable formant clapet d'admission. La lèvre 23 est réalisée d'une seule pièce avec la paroi 22 et le manchon 24 en formant une couronne. En position de fermeture du clapet, la lèvre 23 divise ainsi de manière étanche, le passage pour le produit en un compartiment amont situé du côté de l'extrémité 11 de la douille 1 susceptible de communiquer avec le réservoir R et un compartiment aval susceptible de communiquer avec l'extérieur, par l'orifice 10.In the embodiment shown, the rod 21 is axial and defines, with the wall 22, a peripheral shoulder 22a which extends radially towards the internal wall of the sleeve 1 by an elastically deformable peripheral lip 23 forming an intake valve. . The lip 23 is made in one piece with the wall 22 and the sleeve 24 by forming a crown. In the closed position of the valve, the lip 23 thus divides in leaktight manner, the passage for the product into an upstream compartment located on the side of the end 11 of the socket 1 capable of communicating with the reservoir R and a downstream compartment capable of communicate with the outside, through port 10.
La lèvre 23 forme ainsi une couronne coaxiale solidaire de la tige 21 par son extrémité amont tandis que son extrémité libre aval est, dans la position de fermeture représentée figure 1 , en contact d'appui contre la paroi interne de la douille 1. L'obturateur 2 est, ici, équipé de moyens de rappel formés d'un ressort.The lip 23 thus forms a coaxial crown secured to the rod 21 by its upstream end while its free downstream end is, in the closed position shown in FIG. 1, in contact with contact against the internal wall of the sleeve 1. The shutter 2 is, here, equipped with return means formed by a spring.
Le ressort de rappel 3 entoure coaxialement la tige 21 et prend appui par sa spire d'extrémité arrière sur l'épaulement 22a, en rappelant, ainsi, l'obturateur mobile 2 dans sa position de fermeture. La spire d'extrémité avant du ressort 3 prend appui sur des nervures longitudinales 12, s'étendant sur la paroi interne de la douille 1 au voisinage de l'orifice 10 avec une longueur déterminée en fonction des caractéristiques du ressort.The return spring 3 coaxially surrounds the rod 21 and is supported by its rear end turn on the shoulder 22a, thereby recalling the movable shutter 2 in its closed position. The front end turn of the spring 3 is supported on longitudinal ribs 12, extending on the internal wall of the sleeve 1 in the vicinity of the orifice 10 with a length determined according to the characteristics of the spring.
Le bouchon 20 est constitué d'un corps 20a dont la face latérale est, en position de fermeture, en appui étanche contre le bord intérieur 10a de l'orifice d'éjection 10 formant ainsi le siège du clapet d'échappement. Le contact d'appui étanche est ainsi réalisé entre deux surfaces coniques. Il est possible de prévoir, dans un autre mode de réalisation (non représenté) un jonc annulaire, réalisé sur le bord intérieur 10a de l'orifice d'éjection 10. Le contact est alors assuré entre la face latérale du corps 20a du bouchonThe plug 20 consists of a body 20a, the lateral face of which is, in the closed position, in leaktight contact against the internal edge 10a of the ejection orifice 10 thus forming the seat of the exhaust valve. The sealed support contact is thus produced between two conical surfaces. It is possible to provide, in another embodiment (not shown) an annular ring, produced on the inner edge 10a of the ejection orifice 10. Contact is then ensured between the lateral face of the body 20a of the plug
20 et ce jonc, et se réduit ainsi à une ligne circulaire, ce qui renforce l'appui étanche. Le corps 20a se prolonge par une tête 20b qui fait saillie vers l'avant à l'extérieur de la douille 1.20 and this rod, and is thus reduced to a circular line, which reinforces the sealed support. The body 20a is extended by a head 20b which projects forwardly outside the socket 1.
De préférence, l'orifice d'éjection 10 a un profil tronconique correspondant à celui du corps 20a du bouchon 20.Preferably, the ejection orifice 10 has a frustoconical profile corresponding to that of the body 20a of the plug 20.
La douille 1 a un profil en ogive, tandis que la tête 20b du bouchon 20 possède un profil curviligne dont la courbure est déterminée de façon à assurer une continuité d'aspect du profil en ogive.The socket 1 has a pointed profile, while the head 20b of the plug 20 has a curvilinear profile whose curvature is determined so as to ensure continuity of appearance of the pointed profile.
Lorsque la pression du produit P s'exerce sur la face latérale du corps 20a du bouchon 20, l'obturateur 2 se déplace vers l'avant à partir de sa position arrière de fermeture où le bouchon 20 est engagé et retenu de manière étanche dans l'orifice d'éjection 10.When the pressure of the product P is exerted on the lateral face of the body 20a of the plug 20, the shutter 2 moves forwards from its rear closed position where the plug 20 is engaged and retained in a sealed manner in ejection port 10.
Ce déplacement ne peut s'effectuer qu'à la condition que la pression exercée dépasse un seuil déterminé par le tarage du ressort hélicoïdal 3 qui se comprime sous l'effet de la poussée. Le produit P déforme alors élastiquement la lèvre 23 et pénètre en contournant latéralement la paroi 22 dans le compartiment aval. Puis à l'intérieur du compartiment aval, le produit P se dirige au travers des spires du ressort 3, dans l'espace compris entre la paroi interne de la douille 1 d'une part et le manchon 24 et/ou la tige 21 de l'obturateur 2 d'autre part, vers l'orifice d'éjection 10 en poussant et en contournant le corps 20a du bouchon 20 avant de s'échapper à l'extérieur.This movement can only be carried out on the condition that the pressure exerted exceeds a threshold determined by the calibration of the helical spring 3 which compresses under the effect of the thrust. The product P then elastically deforms the lip 23 and penetrates by laterally bypassing the wall 22 in the downstream compartment. Then inside the downstream compartment, the product P is directed through the turns of the spring 3, in the space between the internal wall of the sleeve 1 on the one hand and the sleeve 24 and / or the rod 21 of the shutter 2 on the other hand, towards the ejection orifice 10 by pushing and bypassing the body 20a of the plug 20 before escaping to the outside.
On peut régler le mécanisme d'éjection en prévoyant, par exemple, que le ressort 3 soit encore légèrement comprimé en position de fermeture de l'obturateur de façon à renforcer l'étanchéité.The ejection mechanism can be adjusted by providing, for example, that the spring 3 is still slightly compressed in the closed position of the shutter so as to strengthen the seal.
Dans ce cas, c'est l'appui forcé de la face latérale du corps 20a du bouchon 20 contre le bord intérieur 10a de l'orifice d'éjection 10 qui retient l'obturateur vers l'avant en position de fermeture.In this case, it is the forced support of the lateral face of the body 20a of the plug 20 against the inner edge 10a of the ejection orifice 10 which retains the shutter forwards in the closed position.
Selon une variante, on peut prévoir que l'extrémité de raccordement 11 de la douille 1 ou le raccord D, comporte sur sa paroi interne des nervures 11a formant des butées arrières pour la paroi 22 lors du retour de l'obturateur en position de fermeture.Alternatively, provision may be made for the connection end 11 of the sleeve 1 or the connection D to have on its internal wall ribs 11a forming rear stops for the wall 22 when the shutter returns to the closed position. .
Dans la variante représentée, les nervures 11a sont formées par les bords du raccord D. Sur la figure 3, l'embout est pourvu d'un capot amovible 4 destiné à coiffer la douille 1.In the variant shown, the ribs 11a are formed by the edges of the connector D. In FIG. 3, the end piece is provided with a removable cover 4 intended to cover the socket 1.
Le sommet du capot 4 comporte une partie en creux 40 où la paroi est amincie et qui vient en appui, par sa face interne, contre la tête 20b du bouchon 20 pour garantir l'étanchéité de la fermeture. Le capot 4 est, par exemple, vissé, à l'extérieur, sur l'extrémité 11 de raccordement de la douille 1 , ou sur une bague extérieure ou, comme représenté sur la figure 3, directement sur la paroi du réservoir rigide R.The top of the cover 4 has a hollow part 40 where the wall is thinned and which comes to bear, by its internal face, against the head 20b of the plug 20 to guarantee the tightness of the closure. The cover 4 is, for example, screwed, on the outside, on the end 11 of connection of the socket 1, or on an outer ring or, as shown in FIG. 3, directly on the wall of the rigid tank R.
A cet effet, la paroi du réservoir R est pourvue de nervures N formant des filets qui coopèrent avec des nervures 41 correspondantes, ménagées sur la paroi interne du capot 4, pour assurer le vissage.To this end, the wall of the reservoir R is provided with ribs N forming threads which cooperate with corresponding ribs 41, formed on the internal wall of the cover 4, to ensure screwing.
La position et la géométrie des nervures 41 et N sont déterminées, de façon à assurer l'appui de la partie en creux 40 sur le bouchon 20 en fin de vissage.The position and the geometry of the ribs 41 and N are determined, so as to ensure the support of the hollow part 40 on the plug 20 at the end of screwing.
Le capot est, le cas échéant, pourvu d'un élément raidisseur interne 42 (voir figures 5a, 5b) prenant appui sur la partie supérieure du récipient R.The cover is, if necessary, provided with an internal stiffening element 42 (see FIGS. 5a, 5b) bearing on the upper part of the container R.
Dans le mode de réalisation de la figure 4, la paroi 22, portant la lèvre périphérique 23 du clapet d'admission, se prolonge vers le réservoir R par un ergot 25, qui est engagé dans un manchon 5, lui-même logé dans le raccord D et faisant saillie à l'intérieur du réservoir R. Le manchon 5 est, le cas échéant, solidaire de la paroi interne de l'extrémité de raccordement 11 de la douille 1 ou du raccord D (voir figures 5a, 5b). L'extrémité de raccordement 11 est, ici, vissée sur le raccord D et possède une collerette périphérique 11a.In the embodiment of FIG. 4, the wall 22, carrying the peripheral lip 23 of the intake valve, is extended towards the reservoir R by a lug 25, which is engaged in a sleeve 5, itself housed in the connection D and protruding inside the tank R. The sleeve 5 is, if necessary, integral with the internal wall of the connection end 11 of the socket 1 or of the connection D (see Figures 5a, 5b). The connection end 11 is, here, screwed onto the connection D and has a peripheral flange 11a.
Le manchon 5 comporte un épaulement 50 disposé en regard de la face arrière 24 de la paroi 22. Dans ce mode de réalisation, l'extrémité avant du ressort 3 prend appui dans le fond d'une gorge annulaire 13, ménagée sur la paroi interne du sommet de la douille 1. La gorge 13 est délimitée sur son bord interne par un collet 14 assurant le guidage de la tige 21 , lors de son mouvement axial. Le bord interne libre 14a du collet 14 peut aussi servir de butée pour le manchon 24, lors de son déplacement axial avec la tige 21. Dans le cas où la lèvre 23 est très longue (comme dans le mode de réalisation des figures 5a, 5b) son extrémité libre peut s'engager, au moins partiellement dans la gorge 13 lorsque l'obturateur 2 est en position ouverte.The sleeve 5 has a shoulder 50 disposed opposite the rear face 24 of the wall 22. In this embodiment, the front end of the spring 3 is supported in the bottom of an annular groove 13, formed on the internal wall from the top of the sleeve 1. The groove 13 is delimited on its internal edge by a collar 14 ensuring the guiding of the rod 21, during its axial movement. The free internal edge 14a of the collar 14 can also serve as a stop for the sleeve 24, during its axial displacement with the rod 21. In the case where the lip 23 is very long (as in the embodiment of FIGS. 5a, 5b ) its free end can engage, at least partially in the groove 13 when the shutter 2 is in the open position.
Lorsque la pression augmente dans le réservoir R, le produit P passe par l'espace libre annulaire délimité par le manchon 5, d'une part, et l'ergot 25, d'autre part, pour atteindre le compartiment amont de la douille 1.When the pressure increases in the reservoir R, the product P passes through the annular free space delimited by the sleeve 5, on the one hand, and the lug 25, on the other hand, to reach the upstream compartment of the sleeve 1 .
Cet espace est étroit mais il est adapté à la viscosité du produit P de façon à freiner son écoulement depuis le réservoir R vers le volume intérieur de la douille 1. Puis, le produit déforme la lèvre 23 et pénètre dans le compartiment aval de la douille 1.This space is narrow but it is adapted to the viscosity of the product P so as to slow its flow from the reservoir R towards the interior volume of the socket 1. Then, the product deforms the lip 23 and enters the downstream compartment of the socket 1.
Il exerce ensuite une poussée sur le bouchon 20, qui se déplace axialement vers l'extérieur de l'orifice 10. Ce mouvement comprime le ressort 3 et libère ainsi un passage pour le produit P vers l'extérieur entre la tige 21 et le collet 14.It then exerts a push on the plug 20, which moves axially towards the outside of the orifice 10. This movement compresses the spring 3 and thus frees a passage for the product P towards the outside between the rod 21 and the collar 14.
Dans le mode de réalisation représenté sur les figures 5a et 5b, la paroi transversale 22 est élastiquement deformable et est retenue à l'extrémité de raccordement 11 de la douille 1 en formant ainsi un moyen de rappel élastique de l'obturateur 2. La paroi 22 et la lèvre 23 sont réunies par un collier central 26 qui est serré sur un étranglement 21 a de la tige 21.In the embodiment shown in FIGS. 5a and 5b, the transverse wall 22 is elastically deformable and is retained at the connection end 11 of the sleeve 1, thereby forming an elastic return means for the shutter 2. The wall 22 and the lip 23 are joined by a central collar 26 which is tightened on a constriction 21a of the rod 21.
La paroi 22 est ajourée de façon à ménager des passages pour le produit P entre le réservoir R et le compartiment amont de la douille. The wall 22 is perforated so as to provide passages for the product P between the reservoir R and the upstream compartment of the sleeve.

Claims

REVENDICATIONS
1. Embout de distribution d'un produit (P) liquide ou pâteux destiné à être monté sur un réservoir (R) susceptible d'être mis sous pression du type comprenant,1. nozzle for dispensing a liquid or pasty product (P) intended to be mounted on a tank (R) capable of being pressurized of the type comprising,
- une douille (1) pourvue, d'une part d'une extrémité de raccordement (11) au réservoir (R) et d'autre part, d'un orifice d'éjection (10), - un obturateur mobile (2) logé à l'intérieur de ladite douille (1), constitué d'une tige (21) portant, à son extrémité externe, un bouchon (20) formant avec l'orifice d'éjection (10), un clapet d'échappement, et à son extrémité interne, une paroi transversale (22) ménageant un passage pour le produit (P)et coopérant avec des moyens de rappel élastique (3) de l'obturateur mobile (2) vers une position de fermeture où le bouchon (20) est engagé de manière étanche dans l'orifice d'éjection (10), caractérisé en ce qu'il comprend en outre, un clapet d'admission constitué d'une lèvre périphérique (23) deformable divisant de manière étanche le passage pour le produit autour de la tige (21) en un compartiment amont et un compartiment aval.- a socket (1) provided, on the one hand with a connection end (11) to the reservoir (R) and on the other hand, with an ejection orifice (10), - a movable shutter (2) housed inside said socket (1), consisting of a rod (21) carrying, at its outer end, a plug (20) forming, with the ejection orifice (10), an exhaust valve, and at its internal end, a transverse wall (22) providing a passage for the product (P) and cooperating with elastic return means (3) of the movable shutter (2) towards a closed position where the plug (20 ) is sealingly engaged in the ejection orifice (10), characterized in that it further comprises, an intake valve consisting of a deformable peripheral lip (23) dividing the passage for sealingly product around the rod (21) in an upstream compartment and a downstream compartment.
2. Embout selon la revendication 1 , caractérisé en ce que ladite lèvre (23) est solidaire de la tige (21) et son extrémité libre est, en position de fermeture du clapet, en contact d'appui contre la paroi interne de la douille (1). 2. End piece according to claim 1, characterized in that said lip (23) is integral with the rod (21) and its free end is, in the closed position of the valve, in contact with bearing against the internal wall of the sleeve (1).
3. Embout selon la revendication 1 ou 2, caractérisé en ce que ladite lèvre (23) est portée par une couronne coaxiale à la tige (21).3. End piece according to claim 1 or 2, characterized in that said lip (23) is carried by a crown coaxial with the rod (21).
4. Embout selon la revendication 3, caractérisé en ce que ladite paroi transversale (22) est réalisée d'une seule pièce avec ladite couronne.4. End piece according to claim 3, characterized in that said transverse wall (22) is made in one piece with said crown.
5. Embout selon l'une des revendications précédentes, caractérisé en ce que l'extrémité amont de la lèvre (23) est solidaire de la tige (21).5. End piece according to one of the preceding claims, characterized in that the upstream end of the lip (23) is integral with the rod (21).
6. Embout selon l'une des revendications précédentes, caractérisé en ce que ladite paroi transversale (22) est élastiquement deformable et est retenue par son bord périphérique à extrémité de raccordement (11) de la douille (1) en formant ainsi un moyen de rappel élastique de l'obturateur (2). 6. End piece according to one of the preceding claims, characterized in that said transverse wall (22) is elastically deformable and is retained by its peripheral edge at the connection end (11) of the sleeve (1) thereby forming a means of elastic return of the shutter (2).
7. Embout selon la revendication 1 , caractérisé en ce que ladite tige (21) est axiale et définit avec la paroi transversale (22), un épaulement périphérique (22a).7. End piece according to claim 1, characterized in that said rod (21) is axial and defines with the transverse wall (22), a peripheral shoulder (22a).
8. Embout selon la revendication 7, caractérisé en ce que lesdits moyens de rappel élastique (3) comprennent un ressort hélicoïdal entourant la tige (21) de l'obturateur (2) en prenant appui, par son extrémité arrière, sur l'épaulement (22a), et par son extrémité avant, sur la paroi interne de la douille (1).8. End piece according to claim 7, characterized in that said elastic return means (3) comprise a helical spring surrounding the rod (21) of the shutter (2) bearing, by its rear end, on the shoulder (22a), and by its front end, on the internal wall of the sleeve (1).
9. Embout selon la revendication 8, caractérisé en ce que l'extrémité avant du ressort (3) prend appui sur des nervures longitudinales (12) s'étendant le long de la paroi interne de la douille (1).9. End piece according to claim 8, characterized in that the front end of the spring (3) bears on longitudinal ribs (12) extending along the internal wall of the sleeve (1).
10. Embout selon la revendication 8, caractérisé en ce que l'extrémité avant du ressort (3), prend appui dans le fond d'une gorge annulaire (13) ménagée sur la paroi interne de la douille (1) et délimitée sur son bord interne par un collet (14) de guidage de la tige (21).10. End piece according to claim 8, characterized in that the front end of the spring (3) bears on the bottom of an annular groove (13) formed on the internal wall of the sleeve (1) and delimited on its internal edge by a collar (14) for guiding the rod (21).
11. Embout selon l'une des revendications précédentes, caractérisé en ce que ledit bouchon (20) est constitué, d'une part, d'un corps (20a) dont la face latérale est, en position de fermeture, en appui étanche contre le bord intérieur (10a) de l'orifice d'éjection (10) et, d'autre part, d'une tête (20b) faisant saillie à l'extérieur de la douille (1 ).11. End piece according to one of the preceding claims, characterized in that said plug (20) consists, on the one hand, of a body (20a) whose lateral face is, in the closed position, in sealed contact against the inner edge (10a) of the ejection orifice (10) and, on the other hand, a head (20b) projecting from the outside of the sleeve (1).
12. Embout selon la revendication 11, caractérisé en ce que l'orifice d'éjection (10) a un profil tronconique correspondant à celui du corps (20a) du bouchon (20).12. A nozzle according to claim 11, characterized in that the ejection orifice (10) has a frustoconical profile corresponding to that of the body (20a) of the plug (20).
13. Embout selon l'une des revendications 11 ou 12, caractérisé en ce que le bord intérieur (10a) de l'orifice d'éjection (10) est pourvu d'un jonc annulaire sur lequel la face latérale du corps du bouchon (20) vient en appui étanche tors de sa fermeture.13. End piece according to one of claims 11 or 12, characterized in that the inner edge (10a) of the ejection orifice (10) is provided with an annular ring on which the lateral face of the body of the plug ( 20) comes into tight torsional support from its closure.
14. Embout selon l'une des revendications 11 à 13, caractérisé en ce que la douille (1) a un profil en ogive et la tête (20b) du bouchon (20) a un profil curviligne dont la courbure est déterminée de façon à assurer une continuité d'aspect du profil en ogive.14. End piece according to one of claims 11 to 13, characterized in that the sleeve (1) has a pointed profile and the head (20b) of the plug (20) has a curvilinear profile whose curvature is determined so as to ensure continuity of appearance of the warped profile.
15. Embout selon l'une des revendications précédentes, caractérisé en ce que l'extrémité de raccordement (11 ) de la douille (1 ) comporte sur la paroi interne, des nervures (11a) formant butée pour la paroi transversale (22). 15. End piece according to one of the preceding claims, characterized in that the connection end (11) of the sleeve (1) has on the internal wall, ribs (11a) forming a stop for the transverse wall (22).
16. Embout selon l'une des revendications précédentes, caractérisé en ce que ladite tige (21) est rendue solidaire de la paroi transversale (22) en étant engagée dans un manchon serrant (24) portant ladite face.16. End piece according to one of the preceding claims, characterized in that said rod (21) is made integral with the transverse wall (22) by being engaged in a tightening sleeve (24) carrying said face.
17. Embout selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, en outre, un capot amovible (4) destiné à coiffer la douille (1) et dont le sommet vient en appui, par sa face interne, contre le bouchon (20) pour garantir l'étanchéité de la fermeture.17. End piece according to one of the preceding claims, characterized in that it further comprises a removable cover (4) intended to cover the sleeve (1) and the top of which abuts, by its internal face, against the plug (20) to guarantee the tightness of the closure.
18. Embout selon l'une des revendications précédentes, caractérisé en ce que ladite paroi transversale (22) se prolonge vers le réservoir (R) par un ergot (25) engagé dans un manchon (5) faisant saillie à l'intérieur dudit réservoir. 18. End piece according to one of the preceding claims, characterized in that said transverse wall (22) extends towards the reservoir (R) by a lug (25) engaged in a sleeve (5) projecting inside said reservoir .
EP97900238A 1996-01-08 1997-01-07 Nozzle for dispensing a liquid or pasty material Expired - Lifetime EP0874761B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9600120A FR2743353B1 (en) 1996-01-08 1996-01-08 DISPENSING TIP FOR LIQUID OR PASTY PRODUCTS
FR9600120 1996-01-08
PCT/FR1997/000021 WO1997025253A1 (en) 1996-01-08 1997-01-07 Nozzle for dispensing a liquid or pasty material

Publications (2)

Publication Number Publication Date
EP0874761A1 true EP0874761A1 (en) 1998-11-04
EP0874761B1 EP0874761B1 (en) 1999-10-20

Family

ID=9487941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97900238A Expired - Lifetime EP0874761B1 (en) 1996-01-08 1997-01-07 Nozzle for dispensing a liquid or pasty material

Country Status (9)

Country Link
US (1) US5992764A (en)
EP (1) EP0874761B1 (en)
JP (2) JP3834061B2 (en)
AT (1) ATE185759T1 (en)
DE (1) DE69700650T2 (en)
ES (1) ES2139434T3 (en)
FR (1) FR2743353B1 (en)
PT (1) PT874761E (en)
WO (1) WO1997025253A1 (en)

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US6698629B2 (en) 2001-05-10 2004-03-02 Shurflo Pump Manufacturing Co., Inc. Comestible fluid dispensing tap and method
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Also Published As

Publication number Publication date
DE69700650D1 (en) 1999-11-25
JP3834061B2 (en) 2006-10-18
JP2000502978A (en) 2000-03-14
PT874761E (en) 2000-04-28
WO1997025253A1 (en) 1997-07-17
US5992764A (en) 1999-11-30
ATE185759T1 (en) 1999-11-15
JP2006096420A (en) 2006-04-13
FR2743353B1 (en) 1998-03-27
ES2139434T3 (en) 2000-02-01
EP0874761B1 (en) 1999-10-20
FR2743353A1 (en) 1997-07-11
DE69700650T2 (en) 2000-07-06

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