EP1249278A1 - Pumpenspender - Google Patents

Pumpenspender Download PDF

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Publication number
EP1249278A1
EP1249278A1 EP20010830249 EP01830249A EP1249278A1 EP 1249278 A1 EP1249278 A1 EP 1249278A1 EP 20010830249 EP20010830249 EP 20010830249 EP 01830249 A EP01830249 A EP 01830249A EP 1249278 A1 EP1249278 A1 EP 1249278A1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
rim
suction
belonging
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.)
Withdrawn
Application number
EP20010830249
Other languages
English (en)
French (fr)
Inventor
Stefano Santagiuliana
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.)
Taplast SRL
Original Assignee
Taplast SRL
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 Taplast SRL filed Critical Taplast SRL
Priority to EP20010830249 priority Critical patent/EP1249278A1/de
Priority to AU2002253430A priority patent/AU2002253430A1/en
Priority to EP02722545A priority patent/EP1379336B1/de
Priority to ES02722545T priority patent/ES2235032T3/es
Priority to PCT/IB2002/001134 priority patent/WO2002083318A2/en
Priority to DE60202359T priority patent/DE60202359T2/de
Publication of EP1249278A1 publication Critical patent/EP1249278A1/de
Withdrawn legal-status Critical Current

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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
    • B05B11/01—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
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1077—Springs characterised by a particular shape or material

Definitions

  • the present invention relates to a delivery pump to be coupled to the neck of a container, particularly adapted to deliver fluids such as food, liquid detergents, creams or perfumes.
  • the known delivery pumps generally comprise a hollow body defining a suction and compression chamber for the fluid to be delivered, communicating with the inner room of the container through a suction duct.
  • a first tight piston is slidingly coupled to the hollow body and is also slidingly and coaxially coupled to one end of a second piston internally provided with a tubular chamber.
  • first piston slides inside a seat made at the end of the second piston, moving from a top dead center to a bottom dead center defined by an annular boss preventing the mutual decoupling of both pistons.
  • the tubular chamber communicates with outside through a delivery duct and with the suction and compression chamber through one or more holes made on the second piston at said seat.
  • Said holes are intercepted by a first annular rim belonging to the first piston and coupled to a corresponding second annular rim belonging to the second piston.
  • each annular rim consists of a couple of frustum conical annular surfaces which define a single annular sealing zone allowing to open or close the delivery duct according to the mutual position of the two pistons.
  • Valve means generally consisting of metal balls arranged between the suction and compression chamber and the inner room of the container, regulate inflow and outflow of fluid in said chamber.
  • elastic means generally consisting of helical springs arranged between the hollow body and the pistons, ensure return of said piston to the rest position at the end of a delivery operation.
  • the user acting on the piston loads the elastic means and compresses the liquid contained in the suction and compression chamber at the same time moving the first piston to its top dead center so as to push away the annular rims allowing outflow of the liquid to the delivery duct.
  • the elastic return of the piston generates a depression inside the chamber opening the liquid suction ducts and returning the first piston to its bottom dead center so as to close the delivery duct and allowing inflow of liquid inside the chamber thus preparing the pump for the subsequent delivery.
  • Efficiency of suction and therefore proper operation of the pump in the subsequent delivery phase is determined by the seal effected by the couple of annular rims and the characteristics of the material used for their manufacture.
  • a first limit of the above mentioned devices consists in that said pumps have a limited suction efficiency for the liquid from the container.
  • some known devices are provided with an annular boss which is not made on the second piston but on a plug that is being applied after coupling of the pistons.
  • Object of the present invention is to overcome the above mentioned limits and drawbacks.
  • More particularly a first object is to provide a delivery pump having a greater suction efficiency relative to the known pumps.
  • Another object is to provide a pump keeping the suction efficiency substantially constant with time.
  • a further object is to provide a pump which is tolerant to thermal stress which undergoes during the transportation and stockage stages.
  • Another object is to provide a pump that at the end of its use can be immediately and fully recycled without any previous disassembling operation to separate materials which are different and incompatible to one another.
  • a further object is to provide a pump which is particularly easy and reliable in use.
  • a last but not least object is to provide a pump which is particularly cheap, easy to be produced and assembled being suitable for mass production.
  • a delivery pump for containers of fluids to be delivered that according to the main claim comprises:
  • the delivery pump of the present invention is shown in Fig. 1 where it is indicated generally with reference numeral 1, and is provided with means 2 for the movable coupling to the neck O of a container C for the fluid F to be delivered.
  • Said pump comprises a hollow body 3 defining a suction and compression chamber 4 for the fluid F to be delivered, communicating with the inner room of container C through a suction duct 4a.
  • a first tight piston 5 is slidingly coupled to the hollow body 3 and is slidingly and coaxially coupled to an end 6 of a second piston 7, internally provided with a tubular chamber 8.
  • first piston 5 moves relative to the second piston 7, as shown in detail in the enlargements of Figs. 2 and 3, from a bottom dead center 10 to a top dead center 11, the movement being guided by the sliding edge 9.
  • the tubular chamber 8 communicates with outside through a delivery duct 12 and with the suction and compression chamber 4 through a hole 13 made at the seat 9 in the second piston 7.
  • Passage of fluid F through the hole 13 is intercepted through a first shaped annular rim 14 that can be seen in detail in Fig. 3, belonging to the first piston 5 and sealingly coupled according to the mutual position of the two pistons 5, 7, with a corresponding second shaped rim 15 belonging to the second piston 7.
  • Elastic means generally indicated with numeral 16 in Fig. 1 and in this embodiment consisting of a bellows spring 40 totally made of plastic material and provided with a perimetral spiral rib 41, are arranged between the two pistons 5,7 and the hollow body 3 so as to cause the movement of said pistons 5,7 inside the chamber 4 elastically yielding.
  • Valve means generally indicated with numeral 17, in this embodiment consisting of a ball 42 made of plastic material and arranged in a corresponding seat made on the edge of the suction and compression chamber 4, are arranged between the suction and compression chamber 4 and the inner room of container C. These valve means regulate inflow of fluid F from the inner room of container C to the chamber 4 and outflow to the delivery duct 12.
  • the invention provides that between the first shaped rim 14 and the second shaped rim 15 there are at least two discreet annular sealing zones 18, 19 shown in Figs. 2 and 3.
  • first shaped rim 14 consists of a first projecting rim while the second shaped rim 15 consists of a concave annular seat receiving said projecting rim.
  • Each annular zone 18, 19 has a couple of surfaces 18a, 18b, 19a, 19b shown in detail in Fig. 3, each belonging to a corresponding shaped annular rim 14, 15, in this embodiment consisting of plain surfaces belonging to a mixtilinear contour.
  • surfaces 18a, 18b, 19a, 19b are in mutual contact along at least one line, so as to allow tightness and consequent cut off of the hole 13.
  • a first constructional modification shown in detail in Figs. 4 and 5 is different from the preceding embodiment because the sealing surfaces have a curved contour. More particularly in Fig. 4 each surface 20a, 20b and 21a, 21b consists of a stretch of parabole.
  • Fig. 5 provides that surfaces 22a, 22b and 23a, 23b belong to a portion of sphere.
  • the two surfaces may indifferently have the one a curved shape and the other a rectilinear shape has shown in Figs. 6 and 7.
  • a further constructional variation shown in detail in Fig. 8 is different from the preceding ones because the sealing surfaces 24a, 24b, 25a, 25b, 26a, 26b and 27a, 27b define four different annular sealing zones instead of two zones as in the preceding embodiments.
  • the delivery pump 1 is fully made of plastic material, so that it can be immediately and totally recycled.
  • the plastic material used to make the first piston 5 has special mechanical features allowing to obtain an optimal seal.
  • the first piston 5 moves then to its top dead center 11 as shown in Fig. 9, so as to move away the annular rims 14, 15 and allow outflow of fluid F to the delivery duct 12 along the path indicated with numeral 50.

Landscapes

  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
EP20010830249 2001-04-10 2001-04-10 Pumpenspender Withdrawn EP1249278A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20010830249 EP1249278A1 (de) 2001-04-10 2001-04-10 Pumpenspender
AU2002253430A AU2002253430A1 (en) 2001-04-10 2002-04-09 Dispensing pump
EP02722545A EP1379336B1 (de) 2001-04-10 2002-04-09 Spenderpumpe
ES02722545T ES2235032T3 (es) 2001-04-10 2002-04-09 Bomba dosificadora.
PCT/IB2002/001134 WO2002083318A2 (en) 2001-04-10 2002-04-09 Dispensing pump
DE60202359T DE60202359T2 (de) 2001-04-10 2002-04-09 Spenderpumpe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010830249 EP1249278A1 (de) 2001-04-10 2001-04-10 Pumpenspender

Publications (1)

Publication Number Publication Date
EP1249278A1 true EP1249278A1 (de) 2002-10-16

Family

ID=8184487

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20010830249 Withdrawn EP1249278A1 (de) 2001-04-10 2001-04-10 Pumpenspender
EP02722545A Expired - Lifetime EP1379336B1 (de) 2001-04-10 2002-04-09 Spenderpumpe

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02722545A Expired - Lifetime EP1379336B1 (de) 2001-04-10 2002-04-09 Spenderpumpe

Country Status (5)

Country Link
EP (2) EP1249278A1 (de)
AU (1) AU2002253430A1 (de)
DE (1) DE60202359T2 (de)
ES (1) ES2235032T3 (de)
WO (1) WO2002083318A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008597A1 (en) * 2004-07-09 2006-01-26 Taplast S.P.A. Unit for dispensing fluids or mixtures and dispensing device
CN101068728B (zh) * 2004-11-30 2011-02-16 雷克斯姆分配系统股份公司 用于分配液体产品的非排气泵及相关的分配器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20130129A1 (it) 2013-05-08 2014-11-09 Taplast Srl Dispositivo per l'erogazione di fluidi.
ITVI20130130A1 (it) 2013-05-08 2014-11-09 Taplast Srl Dispositivo per l'erogazione di fluidi.
CN106812963A (zh) * 2017-02-07 2017-06-09 安徽嘉伟新材料科技有限责任公司 一种复合新型排气阀
KR102113970B1 (ko) * 2020-03-06 2020-05-21 주식회사 동기피엔아이 논메탈 타입 화장품 용기의 펌프 어셈블리
WO2023110890A1 (en) * 2021-12-13 2023-06-22 Rieke Packaging Systems Limited Single-polymer dispenser for viscous fluids and oils

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547439A1 (de) * 1991-12-16 1993-06-23 SAR S.p.A. Spender für flüssige, sahnige oder pastöse Substanzen
US5511698A (en) * 1991-06-26 1996-04-30 Etablissements Valois (Societe Anonyme) Device for spraying a predetermined dose of a fluid, and a method of filling the device
DE29908586U1 (de) * 1999-05-14 1999-08-05 Seaquist Perfect Dispensing Handbetätigte Pumpe
FR2776633A1 (fr) * 1998-03-26 1999-10-01 Valois Sa Dispositif de distribution airless
FR2792553A1 (fr) * 1999-04-22 2000-10-27 Valois Sa Dispositif de distribution biphasique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT211917Z2 (it) * 1987-07-30 1989-05-25 Elettro Plastica Srl Pompa di erogazione applicabile a contenitori di fluidi.
CA2440737C (en) * 1995-01-27 2010-08-24 Yoshino Kogyosho Co., Ltd. Liquid jet pump
FR2764005B1 (fr) * 1997-05-29 2004-12-10 Sofab Pompe a piston articule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5511698A (en) * 1991-06-26 1996-04-30 Etablissements Valois (Societe Anonyme) Device for spraying a predetermined dose of a fluid, and a method of filling the device
EP0547439A1 (de) * 1991-12-16 1993-06-23 SAR S.p.A. Spender für flüssige, sahnige oder pastöse Substanzen
FR2776633A1 (fr) * 1998-03-26 1999-10-01 Valois Sa Dispositif de distribution airless
FR2792553A1 (fr) * 1999-04-22 2000-10-27 Valois Sa Dispositif de distribution biphasique
DE29908586U1 (de) * 1999-05-14 1999-08-05 Seaquist Perfect Dispensing Handbetätigte Pumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008597A1 (en) * 2004-07-09 2006-01-26 Taplast S.P.A. Unit for dispensing fluids or mixtures and dispensing device
CN101068728B (zh) * 2004-11-30 2011-02-16 雷克斯姆分配系统股份公司 用于分配液体产品的非排气泵及相关的分配器

Also Published As

Publication number Publication date
WO2002083318A3 (en) 2002-12-12
AU2002253430A1 (en) 2002-10-28
EP1379336B1 (de) 2004-12-22
ES2235032T3 (es) 2005-07-01
DE60202359D1 (de) 2005-01-27
DE60202359T2 (de) 2006-01-19
WO2002083318A2 (en) 2002-10-24
EP1379336A2 (de) 2004-01-14

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