EP1268083B1 - Dispensing member with outlet valve formed by a differential piston - Google Patents

Dispensing member with outlet valve formed by a differential piston Download PDF

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Publication number
EP1268083B1
EP1268083B1 EP20010907797 EP01907797A EP1268083B1 EP 1268083 B1 EP1268083 B1 EP 1268083B1 EP 20010907797 EP20010907797 EP 20010907797 EP 01907797 A EP01907797 A EP 01907797A EP 1268083 B1 EP1268083 B1 EP 1268083B1
Authority
EP
European Patent Office
Prior art keywords
piston
dispensing
differential piston
chamber
outlet valve
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 - Fee Related
Application number
EP20010907797
Other languages
German (de)
French (fr)
Other versions
EP1268083A1 (en
Inventor
Firmin Garcia
stéphane Beranger
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.)
Aptar France SAS
Original Assignee
Aptar France SAS
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
Priority to FR0003533 priority Critical
Priority to FR0003533A priority patent/FR2806330B1/en
Application filed by Aptar France SAS filed Critical Aptar France SAS
Priority to PCT/FR2001/000437 priority patent/WO2001070412A1/en
Publication of EP1268083A1 publication Critical patent/EP1268083A1/en
Application granted granted Critical
Publication of EP1268083B1 publication Critical patent/EP1268083B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3038Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/304Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3001Piston pumps
    • B05B11/3015Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3001Piston pumps
    • B05B11/3021Piston pumps having an outlet valve which is a gate valve
    • B05B11/3022Piston pumps having an outlet valve which is a gate valve actuated by pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus
    • B05B11/30Single-unit, i.e. unitary, hand-held apparatus comprising a container and a discharge nozzle attached thereto, in which flow of liquid or other fluent material is produced by the muscular energy of the operator at the moment of use or by an equivalent manipulator independent from the apparatus the flow being effected by a pump
    • B05B11/3042Components or details
    • B05B11/3073Springs
    • B05B11/3074Springs located outside pump chambers

Abstract

The invention concerns a fluid dispensing member comprising: a body (2) defining a chamber (43); an actuating rod (5) provided with a push element (51); a piston (4) mounted on the actuating rod (5) and sliding sealed in the chamber; an inlet valve, and an outlet valve (7). The invention is characterised in that the outlet valve comprises a differential piston (7) mobile under the action of pressure exerted on the fluid product by the piston (4) countering the action of a spring (52) supported on the differential piston and on the push-button.

Description

  • The present invention relates to a fluid dispenser member for mounting on the neck of a container. In a conventional manner, this dispensing member comprises a body defining a chamber, an actuating rod provided with a pusher, a piston mounted on the actuating rod and sliding in a sealed manner in the chamber, an inlet valve and an outlet valve. Pressing the pusher moves the piston which reduces the volume of the pump chamber and thus puts the fluid it contains under pressure. The inlet valve closes and the outlet valve opens to expel the fluid product from the chamber to the outside.
  • Numerous dispensing members such as pumps already exist in the prior art, in which the outlet valve is located inside the pump chamber and slidably mounted on the actuating rod. In this case, the piston is formed by a sleeve defining on its outer periphery a sealing lip for sealingly sliding against the inner wall of the body. In addition, the sleeve slides on the actuating rod so as to selectively mask and unmask one or more outlets communicating with an inner conduit formed within the actuating rod. Of course, in this type of dispensing member, the outlet orifice is located on the pusher so that it is movable with the latter. This type of distribution member is described in particular in WO 95/29016. The piston is biased by a spring which bears on the one hand on the piston sleeve, and on the other hand against a stop collar formed by an actuating rod.
  • This kind of pump, however, has the disadvantage that the outlet valve is directly connected to the piston. It is therefore not possible to create or benefit from a gear that would either harden or soften the operation of the pump, including the opening of its outlet valve.
  • To do this, the present invention provides a fluid dispenser member comprising:
    • a body defining a room,
    • an actuating rod provided with a pusher,
    • a piston mounted on the actuating rod and sliding in a sealed manner in the chamber,
    • an inlet flap, and
    • a check valve,
    the outlet valve comprising a differential piston displaceable under the action of the pressure exerted on the fluid by the piston against the action of a spring which bears on the one hand on the differential piston and on the other hand on the button. The piston and the differential piston are thus completely dissociated, so that they each have their own displacement. In this case, they can have different races and diameters. For example, the differential piston may have a larger diameter than the piston which slides in the chamber.
  • According to one characteristic of the invention, said differential piston slides in the body. Advantageously, the body defines a cylindrical section in which the differential piston slides, said cylindrical section being provided with a passage hole selectively closable by said differential piston. In this case, the dispensing member will be fixed spray, that is to say provided with a dispensing orifice that does not move with the rod and the pusher.
  • According to a practical embodiment, a ferrule is engaged in the body to define the rest position of the piston, said differential piston being biased by the spring against said ferrule. Advantageously, the differential piston slides sealingly on a cylindrical sleeve formed by the ferrule. The shell here fulfills a dual function, namely that of stop for the piston in the rest position and that of stop for the differential piston also in the rest position. In addition, the cylindrical sleeve of the ferrule also serves as guide means for the actuating rod to keep it in line.
  • According to one embodiment, the differential piston is disposed between the pusher and the ferrule. In addition, the spring is located outside the chamber. On the other hand, the differential piston is located outside the chamber.
  • The invention will now be more fully described with reference to the accompanying drawings giving by way of non-limiting example an embodiment of the invention.
  • On the drawings:
    • FIG. 1 is a view in vertical cross section through a dispensing member mounted on a container neck, said member being in the rest position,
    • Figures 22a, 2b and 2c are cross-sectional views for illustrating the operation of the dispensing member of Figure 1.
  • Referring first to Figure 1 to describe the structure of a dispensing member according to a preferred form of the invention. The fluid dispenser member which is here a precompression pump is shown mounted on a neck of a container. For fixing, using a fixing ring 3 which cooperates with the inner wall of the neck 10, for example by snapping. The fixing ring 3 can also form a housing in which a nozzle 8 is engaged. The pump will then be of the fixed spray type.
  • To hide the fixing ring 3, as the collar 10, there is provided a trim ring 9 for example metal.
  • The pump also comprises a body 2 engaged inside the fixing ring 3.
  • A piston 4 is slidably mounted inside a barrel 20 defined by the body 2. The piston 4 is mounted at the end of an actuating rod 5 which terminates at its upper end by a pusher 51 on which is pressed to actuate the pump. The piston 4 and the body 2 together define a pump chamber 43 which communicates with the container through an inlet 230. On the other hand, the pump chamber is connected to the nozzle 8 by a discharge channel 23 which is formed between the body 2 and the fixing ring 3.
  • A ferrule 6 is further engaged in the pump body 2: this ferrule 6 comprises a sleeve 61 which forms at its lower end an abutment surface for the piston 4 in the rest position. On the other hand, the sleeve 6 forms a sleeve 62 through which the actuating rod 5 extends. This sleeve 62 consequently constitutes guiding means for keeping the actuating rod 5 in the axis. The ferrule also defines its bearing surface 64.
  • According to the invention, a differential piston 7 is provided to serve as a movable outlet valve member. The differential piston 7 is biased by a spring 52 against the bearing surface 64 of the shell 6. The spring 52 is supported on the one hand against the differential piston 7 and on the other hand against the underside of the pusher 51. differential piston is formed with a central sleeve 71 for sealingly sliding on the sleeve 62 formed by the collar 6. On the other hand, the differential piston is formed with an outer sealing lip 72 in sealing contact with the 2. More precisely, the body 2 forms at its upper end a cylindrical section 26 in which the differential piston 7 slides. This cylindrical section 26 is pierced with a through hole 25 which communicates with an outlet duct 35 formed by the 3. From there, the product can flow through the nozzle 8, advantageously passing through channels and a swirling chamber. Since the sealing lip 72 of the differential piston 7 slides against the inner wall of the cylindrical section 26, it selectively masks and unmasks the through hole 25. Therefore, the fluid product from the pump chamber 43 through the discharge channel 23 can flow through the through hole 25 when the differential piston 7 unmasks the hole 25. In other words, the product at the outlet of the discharge channel 23 enters a valve chamber of outlet 74 which increases in volume when the pressure inside the pump chamber 43 is sufficient to raise the differential piston 7 on the sleeve 62 of the ferrule 6 against the spring 52. It should therefore also be noted that the spring 52 serves as both a return piston and precompression.
  • According to the invention, the internal diameter of the cylindrical section 26 is different from that of the barrel 20 of the body 2 in which the piston 4 slides. In the exemplary embodiment shown, the diameter of the cylindrical section 26 is greater than that of the so that a reduction effect is created, since the differential piston 7 has a shorter stroke than that of the piston 4. Indeed, it suffices for the differential piston 7 to move less than a millimeter to unmask the piston. through hole 25, while the piston moves about a centimeter.
  • It should also be noted that the single return spring and precompression 52 is located outside the chamber 43, that is to say out of contact with the fluid to be dispensed.
  • It should also be noted that the ferrule 6 fills in this pump several functions at the same time, namely that of high dead point for the piston 4, that of stop for the differential piston 7, that of sliding wall with its sealing sleeve 62 for the differential piston 7, that of guiding means with its sleeve 62 for the actuating rod 5. In addition, the ferrule 6 performs an additional function of locking with its sleeve 61 by blocking the snap of the fixing ring 3 to the interior of the neck 10 of the container 1. Such a ferrule 6 may for example be implemented with a differential piston having other characteristics.
  • Reference will now be made to FIGS. 2a, 2b and 2c to explain a complete operating cycle of such a pump. In the position shown in FIG. 2a, the piston 4 is in its high position in abutment against the shell 6. No pressure is exerted on the pusher 51 and the spring 52 is in its most relaxed state with the differential piston 7 biased against the shell 6. The through hole 25 is then closed by the outer peripheral lip 72 of the differential piston 7. By exerting pressure on the pusher 51, the piston 4 descends into the pump chamber 43 and the fluid product stored inside is discharged through the discharge channel 23 into the outlet valve chamber 74. The pressurized product has the effect of displacing the piston differential against the spring 52 until its outer peripheral lip 72 unmasks the through hole 25, as shown in Figure 2b. The fluid product can then escape through the passage 25 and the nozzle. The outlet valve remains open as long as the pressure is sufficient to hold the lip 72 above the through hole 25. When the pusher 51 is fully depressed, as shown in FIG. 3, there is practically no product left. inside the chamber 43 and the pressure is completely dropped so that the spring 52 can return the differential piston 7 in its rest position in abutment against the ferrule 6. The passage hole 25 is then again masked by the lip 72. By releasing the pressure on the pusher 51, the piston rises under the return action of the spring 52 while the differential piston remains completely immobile, plated on the shell 6. The rise of the piston 4 has the effect of sucking of the product inside the chamber from the container. The operating cycle is then completed.

Claims (10)

  1. A fluid-dispensing member comprising:
    a body (2) defining a chamber (43) ;
    an actuating rod (5) provided with a pusher (51);
    a piston (4) mounted on the actuating rod (5) to slide in leaktight manner in the chamber;
    an inlet valve; and
    an outlet valve (7);
       said fluid-dispensing member being characterized in that the outlet valve comprises a differential piston (7) that can be moved under the action of the pressure exerted on the fluid by the piston (4) against the action of a spring (52) which abuts at one end against the differential piston, and at its other end against the pusher.
  2. A dispensing member according to claim 1, in which said differential piston (7) is mounted to slide in the body (2).
  3. A dispensing member according to claim 2, in which the body (2) defines a cylindrical section (26) in which the differential piston is slidably received, said cylindrical section being provided with a through hole (25) that can be closed off selectively by said differential piston.
  4. A dispensing member according to any preceding claim, in which a ferrule (6) is engaged in the body (2) to define the rest position of the piston (4), said differential piston (7) being urged against said ferrule (6) by the spring (52).
  5. A dispensing member according to claim 4, in which the differential piston (7) is mounted to slide in leaktight manner on cylindrical sleeving (62) formed by a ferrule (6).
  6. A dispensing member according to claim 4, 5, or 6, in which the differential piston (7) is disposed between the pusher (51) and the ferrule (6).
  7. A dispensing member according to any preceding claim, in which the spring is situated outside the chamber.
  8. A dispensing member according to any preceding claim, in which the differential piston (7) is situated outside the chamber (43).
  9. A dispensing member according to any one of claims 3 to 8, in which the cylindrical section (26) has an inside diameter different from the inside diameter of the chamber (43) in which the piston is mounted to slide.
  10. A dispensing member according to claim 9, in which the inside diameter of the cylindrical section is greater than the inside diameter of the chamber.
EP20010907797 2000-03-20 2001-02-14 Dispensing member with outlet valve formed by a differential piston Expired - Fee Related EP1268083B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0003533 2000-03-20
FR0003533A FR2806330B1 (en) 2000-03-20 2000-03-20 Valve dispensing device formed by a differential piston
PCT/FR2001/000437 WO2001070412A1 (en) 2000-03-20 2001-02-14 Dispensing member with outlet valve formed by a differential piston

Publications (2)

Publication Number Publication Date
EP1268083A1 EP1268083A1 (en) 2003-01-02
EP1268083B1 true EP1268083B1 (en) 2005-09-21

Family

ID=8848287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010907797 Expired - Fee Related EP1268083B1 (en) 2000-03-20 2001-02-14 Dispensing member with outlet valve formed by a differential piston

Country Status (9)

Country Link
US (1) US6371337B2 (en)
EP (1) EP1268083B1 (en)
JP (1) JP2004511324A (en)
CN (1) CN1171686C (en)
BR (1) BR0109431A (en)
DE (1) DE60113516T2 (en)
ES (1) ES2250357T3 (en)
FR (1) FR2806330B1 (en)
WO (1) WO2001070412A1 (en)

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US6554160B2 (en) * 2001-03-22 2003-04-29 Valois S.A. Dispenser member such as a pump or a valve
US6592010B2 (en) * 2001-03-22 2003-07-15 Valois S.A. Fluid dispenser
US7055721B2 (en) 2001-03-23 2006-06-06 Chong Woo Co., Ltd. Finger-operated spray pump ejaculating fluid in fixed quantity
KR100755809B1 (en) * 2001-03-23 2007-09-05 주식회사 종우실업 finger-operated spray pump ejaculating fluid in fixed quantity
FR2828821B1 (en) * 2001-08-23 2004-01-23 Valois Sa Dispensing head for a fluid product dispenser
AU2003229068A1 (en) * 2002-05-23 2003-12-12 Cohen, Ben, Z. Medically accurate pump system
FR2840890B1 (en) * 2002-06-14 2004-10-15 Valois Sa Fixing member and fluid product dispenser comprising such a fixing member
US7255248B2 (en) * 2002-08-29 2007-08-14 Emsar, Inc. Plug style pump
FR2845355B1 (en) * 2002-10-07 2005-09-09 Valois Sas Fluid product dispenser
US20040069812A1 (en) * 2002-10-07 2004-04-15 Valois S.A.S. Fluid dispenser
AT322344T (en) * 2002-11-25 2006-04-15 Saint Gobain Calmar Sa Pressure pump with reduced height
FR2864042A1 (en) * 2003-06-20 2005-06-24 Oreal Cosmetic product e.g. perfume, conditioning and distributing device, has spring with mounting part for fixation on fixed part, and protruding part extending along length greater than that of push button
US7740154B2 (en) * 2007-01-12 2010-06-22 The Clorox Company Bottle Fitment
DE102007036999A1 (en) * 2007-08-06 2009-02-19 Nord-Micro Ag & Co. Ohg Outflow valve for an aircraft
CN102883990B (en) * 2009-09-21 2015-01-21 诺信公司 Pneumatically actuated liquid dispensing valve
CA2815247A1 (en) * 2010-10-20 2012-04-26 Meadwestvaco Calmar, Inc. Precompression pump mechanisms
CN103303557B (en) * 2013-05-13 2016-06-08 中山市联昌喷雾泵有限公司 One is sealed into gas port type leakproof liquid emulsion pump
USD717666S1 (en) 2014-03-14 2014-11-18 The Clorox Company Fluid dispenser
CN104150081B (en) * 2014-08-18 2016-02-24 中山市联昌喷雾泵有限公司 A kind of variable displacement type emulsion pumps
FR3032436B1 (en) * 2015-02-10 2019-08-30 Louis Vuitton Malletier Packaging device for a product to be distributed

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US4227628A (en) * 1979-02-23 1980-10-14 Parsons Frederick L Fluid dispensing pump having axially deformable valve
JPS61905Y2 (en) * 1979-06-28 1986-01-13
US5217148A (en) * 1991-02-11 1993-06-08 Spruhventile Gmbh Pharmaceutical pump dispenser
FR2686377B1 (en) * 1992-01-20 1994-03-25 Valois Improved precompression pump.
FR2719242B1 (en) 1994-04-27 1996-07-12 Valois Sa Advanced precompression pump.
FR2726045B1 (en) * 1994-10-19 1997-01-10 Sofab Miniature prepressure pump
FR2742812B1 (en) * 1995-12-22 1998-02-20 Valois Prepressure pump formed in push button
FR2748406B1 (en) * 1996-05-07 1998-08-28 Valois Fixed spray dispensing device
FR2764005B1 (en) * 1997-05-29 2004-12-10 Sofab Articulated piston pump
US6209759B1 (en) * 1997-07-04 2001-04-03 Valois S.A. Hand-operated pump with a free floating sleeve piston
IT1294275B1 (en) * 1997-07-24 1999-03-24 Giovanni Albini Button for dispensing fluids through a mobile nozzle on the same button
FR2777209B1 (en) * 1998-04-14 2000-06-30 Sofab Device for prepositioning a covering collar on a push button
US6170713B1 (en) * 1998-10-28 2001-01-09 Emson, Inc. Double spring precompression pump with priming feature
GB2344857B (en) * 1998-12-15 2001-03-14 Bespak Plc Improvements in or relating to dispensing apparatus

Also Published As

Publication number Publication date
WO2001070412A1 (en) 2001-09-27
US20010022309A1 (en) 2001-09-20
US6371337B2 (en) 2002-04-16
DE60113516D1 (en) 2005-10-27
FR2806330B1 (en) 2002-10-25
FR2806330A1 (en) 2001-09-21
JP2004511324A (en) 2004-04-15
CN1171686C (en) 2004-10-20
CN1424943A (en) 2003-06-18
ES2250357T3 (en) 2006-04-16
DE60113516T2 (en) 2006-06-14
EP1268083A1 (en) 2003-01-02
BR0109431A (en) 2002-12-10

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