EP1165247B1 - Suction pump - Google Patents

Suction pump Download PDF

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Publication number
EP1165247B1
EP1165247B1 EP00911014A EP00911014A EP1165247B1 EP 1165247 B1 EP1165247 B1 EP 1165247B1 EP 00911014 A EP00911014 A EP 00911014A EP 00911014 A EP00911014 A EP 00911014A EP 1165247 B1 EP1165247 B1 EP 1165247B1
Authority
EP
European Patent Office
Prior art keywords
piston
tube
chamber
pump
orifice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00911014A
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German (de)
French (fr)
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EP1165247A1 (en
Inventor
Jean-Louis Bougamont
Christophe Roy
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
Rexam Dispensing Systems SAS
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Publication date
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Publication of EP1165247A1 publication Critical patent/EP1165247A1/en
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Publication of EP1165247B1 publication Critical patent/EP1165247B1/en
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    • 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
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1097—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke
    • 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
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem

Definitions

  • the present invention relates to a pump and more particularly a pump for liquid cosmetic products from type creams.
  • Traditional pumps include a body cylindroconical delimiting a metering chamber closed at its part lower by an inlet valve and at its upper part by a movable piston cooperating with elastic return means by being carried coaxially by a spray tube, the upper end of which protrusion outside the pump body and the lower end of which is provided with at least one exhaust port.
  • These pumps are intended to equip tanks such as bottles and the whole thus forms a packaging system and distribution.
  • Such pumps are described in particular in the EP 0 888 824 and EP 0 757 004 where the piston is also mounted sliding on the one hand around the spray tube between a position closing the exhaust port and a full position opening of said orifice and, on the other hand, in sealed peripheral contact with the internal wall of said chamber between a high stop and a lower end stop; the coefficient of friction between the piston and tube being less than the coefficient of friction between said piston and the inner wall of the body.
  • the object of the present invention is to solve this problem technique satisfactorily.
  • the stroke of the piston over the spray tube is determined so that it produces, at the ascent of the tube, re-aspiration into the chamber of a volume of product corresponding to the residue contained in said tube.
  • the elastic return means act on the lower end of the spray tube which extends to inside the dosing chamber.
  • the upper stop of the piston is formed from the inner bottom edge of a flange covering the upper part of the body and ensuring the retention of the spray tube.
  • the position closing the exhaust port corresponds to the contact of the piston with the protruding annular rim of a fitting, at at least partially, the lower end of said tube below the level of said orifice and receiving the support of the return means.
  • the protruding rim has an interior profile frustoconical cooperating with the bevelled lower edge of the piston to ensure tight sealing of the exhaust port.
  • the pump of the invention allows the nozzle tube to be released from any product, automatically after each distribution.
  • the pump of the invention therefore ensures tight confinement and protective of the product, which preserves its quality and properties intrinsic.
  • the pump shown in the figures comprises a cylindrical-conical body 1 internally delimiting a metering chamber 10.
  • the chamber 10 is closed at its lower part by a ball admission valve 11 and is extended downwards by a dip tube 12.
  • the pump body is intended to be introduced, at least partially, inside a container such as a bottle (not shown) where the tube 12 is immersed in the liquid product to be dispensed.
  • Chamber 10 is closed at its upper part by a piston mobile 2 housed inside the chamber and cooperating with means elastic return. These return means consist here of a helical spring 3 mounted inside the chamber 10.
  • the piston 2 is carried by the lower part of a spray tube 4 whose end upper protrudes outside the body 1 while topped with a push button (not shown).
  • the lower end of the nozzle tube 4 is provided with a valve. exhaust comprising in particular one or more orifices 40 opening laterally.
  • Spring 3 is arranged between the end bottom of the spray tube 4 and the bottom of the chamber 10 above the ball 11.
  • a collar S for retaining the nozzle tube 4 covers the part upper part of body 1 and jointly assembles the pump on the container.
  • the piston 2 is slidably mounted, on the one hand, around the tube nozzle 4 and, on the other hand, in sealed peripheral contact with the wall internal chamber 10.
  • the piston 2 consists of a central sleeve 20 surrounding the tube 4 and extending radially outwards by a ring peripheral 22, via a connecting spacer 21.
  • the inner wall of the sleeve 20 has an upper neck delimiting an annular bottom 20a intended to cooperate with a shoulder formed of a boss 42 integral with the side wall of the tube 4 and the lower periphery 42a has a profile complementary to the bottom 20a.
  • the piston 2 is capable of moving relative to the tube nozzle 4 enters a position where it closes the exhaust valve in closing the orifice 40 and a fully open position of said valve where it releases said orifice.
  • the stroke of the piston 2 on the tube 4 is limited upwards by the abutment of the bottom 20a of the necking of the sleeve 20 against the lower periphery 42a of the boss 42, and towards the bottom, by pressing the beveled lower edge of said sleeve against the face internal of the projecting annular rim 60 of a nozzle 6 which, at at least partially, the lower end of the tube 4, below the level of the orifice 40.
  • the internal face of the rim 60 has a profile frustoconical which cooperates tightly with the lower edge beveled sleeve 20.
  • the protruding edge 60 also offers a face external support and wedging of the upper end turn of the spring 3.
  • the tube 4 is, for its part, retained in the body of the pump at the by means of an annular shoulder 41 capable of abutting towards the top against a circular lip 51 of the collar 5.
  • piston 2 may also move axially in the chamber 10 relative to the pump body in compressing the product.
  • the nozzle tube 4 can rise automatically under the action of spring 3. This ascent takes place first through the sleeve 20 of the piston 2 which remains fixed in position low in chamber 10 due to the resistance to displacement of the ring 22 in friction contact with the wall of the chamber.
  • This upward stroke of the tube 4 is accompanied by a aspiration into chamber 10 of the product residue contained in the tube via the orifice 40, as shown in FIG. 4.
  • the piston 2 has an upper groove 23 made in the spacer 21 and intended to receive the lower edge internal 52 of the collar 5 which deviates at this level from the wall of the body 1.
  • the lower periphery 42a of the boss 42 is frustoconical.

Abstract

The invention relates to a pump of the type comprising a cylindro-conical body (1) defining a metering chamber (10) closed at its bottom portion by an inlet valve (11) and at its top portion by a moving piston (2) co-operating with resilient return means (3) while being carried axially by a nozzle tube (4) having a top end that projects outside the pump body and having a bottom end that is provided with at least one delivery orifice (40), the pump being characterized in that said piston (2) is slidably mounted firstly about the tube (4) between a closure position closing the delivery orifice (40) and an open position in which said orifice is fully open, and secondly in sealed peripheral contact with the inside wall of said chamber (10) between a top end-of-stroke abutment and a bottom end-of-stroke abutment; the coefficient of friction between the piston (2) and the tube (4) being less than the coefficient of friction between said piston (2) and the inside wall of the body (1).

Description

La présente invention concerne une pompe et plus particulièrement une pompe pour produits cosmétiques liquides du type crèmes.The present invention relates to a pump and more particularly a pump for liquid cosmetic products from type creams.

Les pompes traditionnelles comprennent un corps cylindroconique délimitant une chambre de dosage obturée à sa partie inférieure par un clapet d'admission et à sa partie supérieure par un piston mobile coopérant avec des moyens de rappel élastique en étant porté coaxialement par un tube gicleur dont l'extrémité supérieure fait saillie à l'extérieur du corps de pompe et dont l'extrémité inférieure est munie d'au moins un orifice d'échappement.Traditional pumps include a body cylindroconical delimiting a metering chamber closed at its part lower by an inlet valve and at its upper part by a movable piston cooperating with elastic return means by being carried coaxially by a spray tube, the upper end of which protrusion outside the pump body and the lower end of which is provided with at least one exhaust port.

Ces pompes sont destinées à équiper des réservoirs tels que des flacons et l'ensemble forme ainsi un système de conditionnement et de distribution.These pumps are intended to equip tanks such as bottles and the whole thus forms a packaging system and distribution.

De telles pompes sont décrites notamment dans les EP 0 888 824 et EP 0 757 004 où le piston est, en outre, monté coulissant d'une part autour du tube gicleur entre une position d'obturation de l'orifice d'échappement et une position de pleine ouverture dudit orifice et, d'autre part, en contact périphérique étanche avec la paroi interne de ladite chambre entre une butée haute et une butée basse de fin de course ; le coefficient de frottement entre le piston et le tube étant inférieur au coefficient de frottement entre ledit piston et la paroi interne du corps.Such pumps are described in particular in the EP 0 888 824 and EP 0 757 004 where the piston is also mounted sliding on the one hand around the spray tube between a position closing the exhaust port and a full position opening of said orifice and, on the other hand, in sealed peripheral contact with the internal wall of said chamber between a high stop and a lower end stop; the coefficient of friction between the piston and tube being less than the coefficient of friction between said piston and the inner wall of the body.

Cependant, certains produits cosmétiques ont une tendance naturelle à la dessiccation en présence d'air. Par suite, le reliquat de produit non expulsé se trouvant dans le tube gicleur entre deux utilisations, est susceptible de créer un bouchon artificiel qui va entraver ou interdire la distribution ultérieure du produit.However, some cosmetic products have a tendency natural to desiccation in the presence of air. As a result, the remainder of non-expelled product in the nozzle tube between two uses, is likely to create an artificial plug which will obstruct or prohibit further distribution of the product.

La présente invention a pour but de résoudre ce problème technique de manière satisfaisante.The object of the present invention is to solve this problem technique satisfactorily.

Ce but est atteint conformément à l'invention, au moyen d'une pompe du type précédent caractérisé en ce que la butée basse de fin de course du piston dans la chambre est formée de nervures s'étendant le long de la paroi de ladite chambre parallèlement aux génératrices dudit corps et en ce que ledit piston est constitué d'un manchon central entourant le tube gicleur et dont la paroi interne possède un rétreint supérieur délimitant un fond annulaire et se prolongeant radialement vers l'extérieur par une bague périphérique via une entretoise de liaison, la course du piston sur le tube étant limitée vers le haut par la mise en butée du fond dudit rétreint contre le pourtour inférieur d'un bossage de profil complémentaire solidaire dudit tube.This object is achieved in accordance with the invention, by means of a pump of the previous type characterized in that the lower end stop of piston stroke in the chamber is formed by ribs extending the along the wall of said chamber parallel to the generatrices of said body and in that said piston consists of a central sleeve surrounding the nozzle tube and the inner wall of which has a constriction upper delimiting an annular bottom and extending radially outwards by a peripheral ring via a spacer connection, the stroke of the piston on the tube being limited upwards by the abutment of the bottom of said constricted against the lower periphery of a boss of complementary profile integral with said tube.

Selon une caractéristique avantageuse, la course du piston sur le tube gicleur est déterminée de façon à ce qu'elle produise, à la remontée du tube, une réaspiration dans la chambre d'un volume de produit correspondant au reliquat contenu dans ledit tube.According to an advantageous characteristic, the stroke of the piston over the spray tube is determined so that it produces, at the ascent of the tube, re-aspiration into the chamber of a volume of product corresponding to the residue contained in said tube.

Selon une autre caractéristique avantageuse, les moyens de rappel élastique agissent sur l'extrémité inférieure du tube gicleur qui s'étend à l'intérieur de la chambre de dosage.According to another advantageous characteristic, the elastic return means act on the lower end of the spray tube which extends to inside the dosing chamber.

Selon encore une autre caractéristique avantageuse, la butée haute du piston est formée du bord inférieur interne d'une collerette coiffant la partie supérieure du corps et assurant la retenue du tube gicleur.According to yet another advantageous characteristic, the upper stop of the piston is formed from the inner bottom edge of a flange covering the upper part of the body and ensuring the retention of the spray tube.

Selon encore une attre caractéristique avantageuse la position d'obturation de l'orifice d'échappement correspond au contact du piston avec le rebord annulaire saillant d'un embout garnissant, au moins partiellement, l'extrémité inférieure dudit tube sous le niveau dudit orifice et recevant l'appui des moyens de rappel.According to yet another advantageous characteristic, the position closing the exhaust port corresponds to the contact of the piston with the protruding annular rim of a fitting, at at least partially, the lower end of said tube below the level of said orifice and receiving the support of the return means.

Selon une variante, le rebord saillant a un profil intérieur tronconique coopérant avec le bord inférieur biseauté du piston pour assurer une obturation étanche de l'orifice d'échappement.Alternatively, the protruding rim has an interior profile frustoconical cooperating with the bevelled lower edge of the piston to ensure tight sealing of the exhaust port.

La pompe de l'invention permet de dégager le tube gicleur de tout produit, de façon automatique après chaque distribution.The pump of the invention allows the nozzle tube to be released from any product, automatically after each distribution.

Ainsi, tous les composants de la tête de distribution (tube gicleur; bouton-poussoir, buse...) sont-ils toujours nettoyés et le produit est intégralement contenu dans des espaces fermés et isolés de l'extérieur.Thus, all the components of the distribution head (tube nozzle; button, nozzle ...) are they always cleaned and the product is fully contained in closed spaces isolated from outside.

La pompe de l'invention assure donc un confinement étanche et protecteur du produit, ce qui préserve sa qualité et ses propriétés intrinsèques. The pump of the invention therefore ensures tight confinement and protective of the product, which preserves its quality and properties intrinsic.

La présente invention sera mieux comprise à la lecture de la description qui va suivre en référence aux dessins annexés sur lesquels :

  • la figure 1 représente une vue en coupe d'un mode de réalisation de la pompe de l'invention, en phase de repos ;
  • la figure 2 représente une vue en coupe de la pompe de la figure 1 dans la phase initiale de la distribution ;
  • la figure 3 représente une vue en coupe de la pompe de la figure 1 dans la phase finale de la distribution ;
  • la figure 4 représente une vue en coupe de la pompe de la figure 1 dans la phase de réaspiration ;
  • la figure 5 représente une vue en coupe de la pompe de la figure 1 dans la phase de remplissage de la pompe ;
  • les figures 6A et 6B représentent des vues en coupe d'une variante de réalisation de la pompe de l'invention dans des positions correspondant respectivement aux figures 1 et 4.
The present invention will be better understood on reading the description which follows with reference to the appended drawings in which:
  • Figure 1 shows a sectional view of an embodiment of the pump of the invention, in the rest phase;
  • 2 shows a sectional view of the pump of Figure 1 in the initial phase of distribution;
  • Figure 3 shows a sectional view of the pump of Figure 1 in the final phase of distribution;
  • Figure 4 shows a sectional view of the pump of Figure 1 in the re-aspiration phase;
  • 5 shows a sectional view of the pump of Figure 1 in the filling phase of the pump;
  • FIGS. 6A and 6B represent sectional views of an alternative embodiment of the pump of the invention in positions corresponding respectively to FIGS. 1 and 4.

La pompe représentée sur les figures comprend un corps cylindroconique 1 délimitant intérieurement une chambre de dosage 10. La chambre 10 est obturée à sa partie inférieure par un clapet d'admission à bille 11 et se prolonge vers le bas par un tube plongeur 12.
   le corps de la pompe est destiné à être introduit, au moins partiellement, à l'intérieur d'un récipient tel qu'un flacon (non représenté) où le tube 12 est immergé dans le produit liquide à distribuer.The pump shown in the figures comprises a cylindrical-conical body 1 internally delimiting a metering chamber 10. The chamber 10 is closed at its lower part by a ball admission valve 11 and is extended downwards by a dip tube 12.
the pump body is intended to be introduced, at least partially, inside a container such as a bottle (not shown) where the tube 12 is immersed in the liquid product to be dispensed.

La chambre 10 est obturée à sa partie supérieure par un piston mobile 2 logé à l'intérieur de la chambre et coopérant avec des moyens de rappel élastique. Ces moyens de rappel sont constitués ici d'un ressort hélicoïdal 3 monté à l'intérieur de la chambre 10. Le piston 2 est porté par la partie inférieure d'un tube gicleur 4 dont l'extrémité supérieure fait saillie à l'extérieur du corps 1 en étant coiffée d'un bouton-poussoir (non représenté).Chamber 10 is closed at its upper part by a piston mobile 2 housed inside the chamber and cooperating with means elastic return. These return means consist here of a helical spring 3 mounted inside the chamber 10. The piston 2 is carried by the lower part of a spray tube 4 whose end upper protrudes outside the body 1 while topped with a push button (not shown).

L'extrémité inférieure du tube gicleur 4 est munie d'un clapet d'échappement comportant notamment un ou plusieurs orifices 40 débouchant latéralement. Le ressort 3 est disposé entre l'extrémité inférieure du tube gicleur 4 et le fond de la chambre 10 au-dessus de la bille 11. The lower end of the nozzle tube 4 is provided with a valve. exhaust comprising in particular one or more orifices 40 opening laterally. Spring 3 is arranged between the end bottom of the spray tube 4 and the bottom of the chamber 10 above the ball 11.

Une collerette S de retenue du tube gicleur 4 coiffe la partie supérieure du corps 1 et assure conjointement le montage de la pompe sur le récipient.A collar S for retaining the nozzle tube 4 covers the part upper part of body 1 and jointly assembles the pump on the container.

Le piston 2 est monté coulissant, d'une part, autour du tube gicleur 4 et, d'autre part, en contact périphérique étanche avec la paroi interne de la chambre 10.The piston 2 is slidably mounted, on the one hand, around the tube nozzle 4 and, on the other hand, in sealed peripheral contact with the wall internal chamber 10.

Le piston 2 est constitué d'un manchon central 20 entourant le tube 4 et se prolongeant radialement vers l'extérieur par une bague périphérique 22, via une entretoise de liaison 21.The piston 2 consists of a central sleeve 20 surrounding the tube 4 and extending radially outwards by a ring peripheral 22, via a connecting spacer 21.

La paroi interne du manchon 20 possède un rétreint supérieur délimitant un fond annulaire 20a destiné à coopérer avec un épaulement formé d'un bossage 42 solidaire de la paroi latérale du tube 4 et dont le pourtour inférieur 42a a un profil complémentaire du fond 20a.The inner wall of the sleeve 20 has an upper neck delimiting an annular bottom 20a intended to cooperate with a shoulder formed of a boss 42 integral with the side wall of the tube 4 and the lower periphery 42a has a profile complementary to the bottom 20a.

Le piston 2 est susceptible de se déplacer relativement au tube gicleur 4 entre une position où il ferme le clapet d'échappement en obturant l'orifice 40 et une position de pleine ouverture dudit clapet où il libère ledit orifice.The piston 2 is capable of moving relative to the tube nozzle 4 enters a position where it closes the exhaust valve in closing the orifice 40 and a fully open position of said valve where it releases said orifice.

De manière générale, la course du piston 2 sur le tube 4 est limitée vers le haut par la mise en butée du fond 20a du rétreint du manchon 20 contre le pourtour inférieur 42a du bossage 42, et vers le bas, par l'appui du bord inférieur biseauté dudit manchon contre la face interne du rebord annulaire saillant 60 d'un embout 6 qui garnit, au moins partiellement, l'extrémité inférieure du tube 4, sous le niveau de l'orifice 40. A cet effet, la face interne du rebord 60 a un profil tronconique qui coopère de façon étanche avec le bord inférieur biseauté du manchon 20. Le rebord saillant 60 offre aussi une face externe d'appui et de calage de la spire d'extrémité supérieure du ressort 3.Generally, the stroke of the piston 2 on the tube 4 is limited upwards by the abutment of the bottom 20a of the necking of the sleeve 20 against the lower periphery 42a of the boss 42, and towards the bottom, by pressing the beveled lower edge of said sleeve against the face internal of the projecting annular rim 60 of a nozzle 6 which, at at least partially, the lower end of the tube 4, below the level of the orifice 40. For this purpose, the internal face of the rim 60 has a profile frustoconical which cooperates tightly with the lower edge beveled sleeve 20. The protruding edge 60 also offers a face external support and wedging of the upper end turn of the spring 3.

Le tube 4 est, quant à lui, retenu dans le corps de la pompe au moyen d'un épaulement annulaire 41 susceptible de venir en butée vers le haut contre une lèvre circulaire 51 de la collerette 5.The tube 4 is, for its part, retained in the body of the pump at the by means of an annular shoulder 41 capable of abutting towards the top against a circular lip 51 of the collar 5.

Par ailleurs, le piston 2 est susceptible de se déplacer aussi axialement dans la chambre 10 relativement au corps de la pompe en comprimant le produit.Furthermore, the piston 2 may also move axially in the chamber 10 relative to the pump body in compressing the product.

A partir de la position de repos de la figure 1, un appui manuel sur l'extrémité supérieure du tube gicleur 4 ou sur un bouton-poussoir (non représenté) coiffant ledit tube provoque le coulissement du tube 4 au travers du manchon 20 jusqu'à la position basse représentée sur la figure 2. Dans cette position, le bossage 42 est alors engagé dans le rétreint du manchon 20. En effet, le coefficient de frottement entre la paroi latérale externe du tube 4 et la paroi interne du manchon 20 est choisi inférieur au coefficient de frottement entre la paroi latérale de la bague 22 et la paroi interne de la chambre 10. Ce différentiel entre les coefficients de frottement du piston respectivement vis-à-vis de la paroi de la chambre 10 et du tube 4 est obtenu, par exemple, en modifiant l'état de surface ou en ajustant préférentiellement les surfaces en contact.From the rest position in Figure 1, manual support on the upper end of the nozzle tube 4 or on a push button (not shown) covering said tube causes the tube 4 to slide through the sleeve 20 to the low position shown on the Figure 2. In this position, the boss 42 is then engaged in the shrunk from the sleeve 20. In fact, the coefficient of friction between the external side wall of the tube 4 and the internal wall of the sleeve 20 is chosen lower than the coefficient of friction between the side wall of the ring 22 and the internal wall of the chamber 10. This differential between the friction coefficients of the piston respectively with respect to the wall of the chamber 10 and of the tube 4 is obtained, for example, by modifying the surface condition or preferentially adjusting the surfaces in touch.

La descente du tube 4 dans la chambre 10 s'accompagne de la compression du ressort 3 et libère l'orifice 40, ce qui conduit, malgré la faible section du tube, à un léger échappement de produit vers le conduit interne du tube.The descent of the tube 4 into the chamber 10 is accompanied by the compression of the spring 3 and releases the orifice 40, which leads, despite the small section of the tube, with a slight product escape towards the inner tube duct.

La poursuite de l'appui manuel entraíne, à partir de cette position de precompression, une descente du piston 2 dans la chambre 10 jusqu'à ce qu'il atteigne la butée basse de fin de course constituée ici de nervures 13 s'étendant le long de la paroi de la chambre 10, parallèlement aux génératrices du corps 1. Cette deuxième phase représentée sur la figure 3 finalise la distribution dosée du produit et conduit à la vidange de la chambre 10.The continuation of manual support leads, from this precompression position, a descent of the piston 2 in the chamber 10 until it reaches the lower end-of-travel stop set up here ribs 13 extending along the wall of the chamber 10, parallel to the generatrices of the body 1. This second phase represented in FIG. 3 finalizes the metered distribution of the product and leads to the emptying of chamber 10.

A partir de cette position, le tube gicleur 4 peut remonter automatiquement sous l'action du ressort 3. Cette remontée s'effectue d'abord au travers du manchon 20 du piston 2 qui reste fixe en position basse dans la chambre 10 du fait de la résistance au déplacement de la bague 22 en contact de friction avec la paroi de la chambre.From this position, the nozzle tube 4 can rise automatically under the action of spring 3. This ascent takes place first through the sleeve 20 of the piston 2 which remains fixed in position low in chamber 10 due to the resistance to displacement of the ring 22 in friction contact with the wall of the chamber.

Cette course ascendante du tube 4 s'accompagne d'une aspiration dans la chambre 10 du reliquat de produit contenu dans le tube via l'orifice 40, comme représenté sur la figure 4.This upward stroke of the tube 4 is accompanied by a aspiration into chamber 10 of the product residue contained in the tube via the orifice 40, as shown in FIG. 4.

Lorsque le rebord saillant 60 de l'embout 6 arrive au contact du bord inférieur du manchon 20, l'orifice 40 est obturé et le tube 4 entraíne alors dans sa course le piston 2 vers le haut jusqu'à ce qu'il vienne en butée contre le bord inférieur interne 52 de la collerette 5 formant butée haute comme représenté sur la figure 5. Lors de cette phase le produit P est soutiré du récipient via le tube 12 et le clapet d'admission 11 et vient remplir la chambre 10.When the protruding edge 60 of the end piece 6 comes into contact with the lower edge of the sleeve 20, the orifice 40 is closed and the tube 4 then drives the piston 2 upwards until it comes into abutment against the internal lower edge 52 of the collar 5 forming upper stop as shown in Figure 5. During this phase the product P is withdrawn from the container via the tube 12 and the valve 11 and comes to fill room 10.

De préférence, le piston 2 comporte une gorge supérieure 23 réalisée dans l'entretoise 21 et destinée à recevoir le bord inférieur interne 52 de la collerette 5 qui s'écarte à ce niveau de la paroi du corps 1.Preferably, the piston 2 has an upper groove 23 made in the spacer 21 and intended to receive the lower edge internal 52 of the collar 5 which deviates at this level from the wall of the body 1.

Dans la variante représentée sur les figures 6A et 6B, la course du piston 2 relativement au tube 4 est restreinte, ce qui conduit à une phase de réaspiration de volume minimal (figure 6B).In the variant shown in FIGS. 6A and 6B, the stroke of the piston 2 relative to the tube 4 is restricted, which leads to a aspiration phase of minimum volume (Figure 6B).

En outre, dans cette variante, le pourtour inférieur 42a du bossage 42 est tronconique.Furthermore, in this variant, the lower periphery 42a of the boss 42 is frustoconical.

Claims (6)

  1. A pump of the type comprising a cylindro-conical body (1) defining a metering chamber (10) closed at its bottom portion by an inlet valve (11) and at its top portion by a moving piston (2) co-operating with resilient return means (3) while being carried axially by a nozzle tube (4) having a top end that projects outside the pump body and having a bottom end that is provided with at least one delivery orifice (40), said piston (2) being slidably mounted firstly about the tube (4) between a closure position closing the delivery orifice (40) and an open position in which said orifice is fully open, and secondly in sealed peripheral contact with the inside wall of said chamber (10) between a top end-of-stroke abutment and a bottom end-of-stroke abutment; the coefficient of friction between the piston (2) and the tube (4) being less than the coefficient of friction between said piston (2) and the inside wall of the body (1),
       the pump being characterized in that the bottom end-of-stroke abutment of the piston (2) in the chamber (10) is formed by ribs (13) that extend along the wall of said chamber (10) parallel to the generator lines of said body, and in that said piston (2) is constituted by a central sleeve (20) that surrounds the nozzle tube (4), having an inside wall that has a top recess defining an annular bottom (20a), and that is extended radially outwards by a peripheral ring (22) via a connecting spacer (21), the stroke of the piston (2) over the tube (4) being upwardly limited by abutment of the bottom (20a) of said recess against the bottom circumference (42a) of a projection (42) of complementary profile secured to said tube (4).
  2. A pump according to claim 1, characterized in that the stroke of the piston (2) over the nozzle tube (4) is determined in such a manner that, when the tube rises, a volume of substance corresponding to the residue contained in said tube is sucked back into the chamber.
  3. A pump according to claim 1 or 2, characterized in that the resilient return means act on the bottom end of the nozzle tube (4) which extends inside the metering chamber (10).
  4. A pump according to any preceding claim, characterized in that the top abutment of the piston (2) is formed by the bottom inside edge (52) of a collar (5) covering the top portion of the body (1) and ensuring that the nozzle tube (4) is held.
  5. A pump according to any preceding claim, characterized in that the closure position of the delivery orifice (40) corresponds to the piston (2) being in contact with the projecting annular rim (60) of a tip (6) fitted over at least of the bottom end of said tube beneath the level of said orifice and receiving thrust from the return means (3).
  6. A pump according to claim 5, characterized in that said projecting rim (60) has a tapering inside profile co-operating with the beveled bottom edge of the piston (2) so as to ensure that the delivery orifice (40) is closed in sealed manner.
EP00911014A 1999-03-22 2000-03-21 Suction pump Expired - Lifetime EP1165247B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9903511A FR2791400B1 (en) 1999-03-22 1999-03-22 RESPIRATION PUMP
FR9903511 1999-03-22
PCT/FR2000/000700 WO2000056465A1 (en) 1999-03-22 2000-03-21 Suction pump

Publications (2)

Publication Number Publication Date
EP1165247A1 EP1165247A1 (en) 2002-01-02
EP1165247B1 true EP1165247B1 (en) 2003-05-28

Family

ID=9543464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00911014A Expired - Lifetime EP1165247B1 (en) 1999-03-22 2000-03-21 Suction pump

Country Status (15)

Country Link
US (1) US6634872B1 (en)
EP (1) EP1165247B1 (en)
JP (1) JP2002540332A (en)
CN (1) CN1128684C (en)
AT (1) ATE241431T1 (en)
AU (1) AU3302000A (en)
BR (1) BR0010461A (en)
CA (1) CA2368572A1 (en)
DE (1) DE60003012T2 (en)
DK (1) DK1165247T3 (en)
ES (1) ES2199789T3 (en)
FR (1) FR2791400B1 (en)
HK (1) HK1044731B (en)
PT (1) PT1165247E (en)
WO (1) WO2000056465A1 (en)

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ITMI20020249A1 (en) * 2002-02-11 2003-08-11 Microspray Delta Spa PERFECTLY SEALED DISPENSING PUMP APPLICABLE ON LIQUID CONTAINERS
FR2838784B1 (en) * 2002-04-17 2004-07-09 Valois Sa FLUID PRODUCT DISPENSING PUMP
US7255248B2 (en) * 2002-08-29 2007-08-14 Emsar, Inc. Plug style pump
ITMI20041249A1 (en) * 2004-06-22 2004-09-22 Lumson Spa MANUALLY OPERATED PUMP FOR DISPENSING CREAMY SUBSTANCES
JP5034705B2 (en) * 2007-06-18 2012-09-26 株式会社アドヴィックス Piston pump
US7712633B2 (en) * 2007-07-02 2010-05-11 The Clorox Company Through-pump liquid drain-back system for a dispensing package
JP4953992B2 (en) * 2007-08-30 2012-06-13 株式会社吉野工業所 Spout head
US20090057345A1 (en) * 2007-08-31 2009-03-05 Dukes Stephen A Fluid dispenser
ES2877229T3 (en) * 2008-01-17 2021-11-16 Becton Dickinson Co Device containing drug
CN101945604B (en) * 2008-02-18 2013-08-14 Sca卫生用品公司 Disposable pump with suck-back mechanism
PL2262404T3 (en) * 2008-02-18 2018-01-31 Essity Hygiene & Health Ab A disposable pump, a dispensing system comprising a pump and a method for dispensing liquid
JP5331547B2 (en) * 2009-04-08 2013-10-30 Ｃｋｄ株式会社 Liquid discharge pump unit
KR101099489B1 (en) 2009-10-30 2011-12-28 경남과학기술대학교 산학협력단 Pumping system for disposing pollutant
CN103452821B (en) * 2013-09-04 2015-11-25 易鲁川 Anti-jetting oil pump
USD717666S1 (en) 2014-03-14 2014-11-18 The Clorox Company Fluid dispenser
US10166563B2 (en) * 2016-01-08 2019-01-01 Silgan Dispensing Systems Corporation Pump systems, pump engines, and methods of making the same
WO2020222631A1 (en) * 2019-04-29 2020-11-05 Gonzalez Calleja Humberto Manual siphon pump for transferring liquids

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Also Published As

Publication number Publication date
DE60003012D1 (en) 2003-07-03
CN1128684C (en) 2003-11-26
US6634872B1 (en) 2003-10-21
AU3302000A (en) 2000-10-09
DK1165247T3 (en) 2003-09-01
ATE241431T1 (en) 2003-06-15
HK1044731A1 (en) 2002-11-01
BR0010461A (en) 2002-01-08
WO2000056465A1 (en) 2000-09-28
FR2791400B1 (en) 2002-04-26
CA2368572A1 (en) 2000-09-28
FR2791400A1 (en) 2000-09-29
JP2002540332A (en) 2002-11-26
EP1165247A1 (en) 2002-01-02
ES2199789T3 (en) 2004-03-01
HK1044731B (en) 2004-10-21
PT1165247E (en) 2003-10-31
CN1344183A (en) 2002-04-10
DE60003012T2 (en) 2004-02-26

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