• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Foaming Assembly, Foaming Dispenser, and Foaming Method A foaming assembly includes a porous foaming member, a liquid chamber and an air chamber. the porous foaming element having an air inlet, a liquid inlet and an outlet, and has at least two zones of different pore sizes. the liquid chamber is in fluid communication with the porous foaming member. the liquid chamber has a volume that is movable between a rest position and an activation position. the air chamber is in fluid communication with the porous foaming member. the air chamber has a volume that is movable between a rest position and an activation position. liquid and air are forced into the porous foaming element under pressure and air from the air inlet and liquid from the liquid inlet mix in the porous foaming element to form foam which exits through the outlet. a dispenser may include a foaming assembly and a liquid container.
    公开号:BR112015022382B1
    申请号:R112015022382-6
    申请日:2014-03-07
    公开日:2021-09-08
    发明作者:Stewart Banks；Christopher James Lang；Dean Philip Limbert
    申请人:Deb Ip Limited；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The description refers to foam dispensers and, in particular, foam dispensers having a porous foaming element in which air and liquid mix within the porous foaming element. FUNDAMENTALS
    [002] Foam dispensers are well known and widely used commercially. A wide variety of foam dispensers have been developed. In particular, a number of non-aerosol foam dispensers that use depressurized liquid containers have been developed. The advantage of foam dispensers over soap dispensers is that for each wash, less soap is used.
    [003] One way to reduce manufacturing costs is to reduce the number of components. Consequently, a modality that reduces the number of parts would be advantageous.
    [004] Likewise, a modality in which foam quality is improved would also be advantageous. SUMMARY
    [005] A foaming assembly includes a porous foaming element, a liquid chamber and an air chamber. The porous foaming element has an air inlet, a liquid inlet and an outlet. The porous foaming element has at least two zones of different pore sizes. The liquid chamber is in fluid communication with the porous foaming element. The liquid chamber has a volume of liquid that is movable between a rest position to an activation position. The air chamber is in fluid communication with the porous foaming element. The air chamber has an air volume that is movable between a rest position to an activation position. Liquid and air are forced into the porous foaming element under pressure and air from the air inlet and liquid from the liquid inlet mix in the porous foaming element to form foam that exits through the outlet. A dispenser can include a foaming assembly and a liquid container.
    [006] The porous foaming element may have a zone of smaller pore size or a zone of larger pore size. The zone of smaller pore size may be downstream of the zone of larger pore size. Alternatively, the zone of smaller pore size can be upstream of the zone of larger pore size. The porous foaming element can generally be bow-tie shaped in cross section.
    [007] The foaming assembly may include a foam cone, a piston and a bottle seal and wherein the piston and the bottle seal define the liquid chamber, the foam cone, the bottle seal and the piston define the air chamber and the inward movement of the foam cone into the bottle seal decreases the liquid volume of the liquid chamber and the air chamber, thereby forcing air and liquid into the forming element under pressure. of porous foam.
    [008] The porous foaming element can be positioned in the foam cone between the foam cone and the piston. The porous foaming element can be made of a compressible material and a zone of smaller pore size is where the compressible material is more compressed than in the zone of larger pore size. The shape of the foaming element can be defined by the geometry of the piston and the foam cone.
    [009] The foaming assembly may include a piston dome, a liquid and air hole and a pump main body and the piston dome, the liquid and air hole and the main body define a liquid chamber , the piston dome and the liquid and air hole define the air chamber and the inward movement of the piston dome into the main body decreases the liquid volume of the liquid chamber and the air chamber, thereby forcing under pressure air and liquid into the porous foaming element. The pump main body may include an outlet nozzle and the porous foaming element is positioned in the outlet nozzle between the liquid chamber and a Venturi-type ring. The shape of the porous foaming element can be defined by the geometry of the outlet nozzle and the venturi ring.
    [0010] The foaming assembly may include a pump head, a bottle cap, an air piston, a piston and a main body and the main body and the piston define the liquid chamber, and the pump head , the bottle cap, the air piston, the piston and the main body define the inward movement of the pump head in the main body decreases the liquid volume of the liquid chamber and the air chamber, thereby forcing air under pressure. and liquid into the porous foaming element. The shape of the foaming element can be defined by the geometry of the air piston and pump head.
    [0011] A foam dispenser includes a liquid container and a porous foaming element. The foam dispenser may additionally include a housing having an actuator wherein activation of the actuator causes the air chamber and liquid chamber to move between the rest position and the activation position. The housing may additionally include at least one sensor and the actuator is activated in response to the sensor sensing the presence of a user.
    [0012] In another aspect there is provided a method for making foam including the steps of forcing air and liquid under pressure into a porous foaming element having at least two zones of different pore sizes in which they mix to form foam that comes out through the outlet.
    [0013] Additional features will be described or will become apparent in the course of the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
    [0014] The modalities will be described by way of example, with reference to the attached drawings, in which:
    [0015] Fig. 1 is a perspective view of a foam dispenser including a foaming assembly with a porous foaming element;
    [0016] Fig. 2 is an exploded perspective view of the foaming assembly of the foam dispenser of Fig. 1;
    [0017] Fig. 3 is a sectional view of the foaming assembly of fig. two;
    [0018] Fig. 4 is a sectional view of an alternative embodiment of the foaming assembly of fig. two;
    [0019] Fig. 5 is a sectional view of a further alternative embodiment of the foaming assembly of fig. two;
    [0020] Fig. 6 is an exploded perspective view of a prior art foaming assembly;
    [0021] Fig. 7 is an exploded perspective view of an alternative embodiment of the foaming assembly;
    [0022] Fig. 8 is a sectional view of a foam dispenser including the foaming assembly of fig. 7;
    [0023] Fig. 9 is an enlarged sectional view of a nozzle portion of the foaming assembly shown in Figures 7 and 8;
    [0024] Fig. 10 is a sectional view of a partially assembled dispenser shown in Fig. 8, but showing the porous foaming element and Venturi-type ring disassembled;
    [0025] Fig. 11 is an exploded perspective view of a further alternative embodiment of the foaming assembly;
    [0026] Fig. 12 is a sectional view of the foaming assembly of fig. 11;
    [0027] Fig. 13 is a perspective view of the soap dispenser of figure 1 and showing a ruptured outer housing; and
    [0028] Fig. 14 is a side view of Fig. 13. DETAILED DESCRIPTION
    [0029] Referring to Figures 1 to 3, a depressurized non-aerosol foam dispenser is shown generally at 10. Dispenser 10 includes a foaming assembly 12 connected to a liquid container 13. The liquid container 13 is a container of depressurized liquid.
    [0030] The foaming assembly 12 includes a foam cone 14, a piston 16 and a bottle seal 18. The piston 16 and the bottle seal 18 define a liquid chamber 20. The foam cone 14, a bottle seal 18 and piston 16 define an air chamber 22. Liquid chamber 20 is a central liquid chamber and air chamber 22 is an annular air chamber. Foam cone 16 moves relative to bottle seal 18. Piston 16 is operatively connected to foam cone 14 with a snap fit. An O-ring 24 slides between piston 16 and bottle seal 18 and provides a liquid seal between them.
    [0031] The liquid container 13 is in fluid communication with the liquid chamber 20. A bottle sealing valve 28 controls the inlet 30 of the liquid chamber 20. A top-end sealing valve 32 controls the output 34 of the liquid chamber. liquid 20.
    [0032] A mixing chamber 37 is located between the piston 16 and the foam cone 14. The mixing chamber 37 defines an interior volume that is filled with a porous foaming element 36. The mixing chamber extends from an upstream end to a downstream end and the upstream end is spaced from the downstream end. The porous material extends from the upstream end to the downstream end of the porous foaming element. The mixing chamber 37 has an air inlet 38, a liquid inlet 40 and an outlet 41. The air inlet 38, the liquid inlet 40 and the outlet 40 are in fluid communication with the porous foaming element 36 so that air and liquid mix in mixing chamber 37 and mix within the porous foaming element. Air inlet 38 and liquid inlet 40 are spaced apart. The porous foaming element 36 has zones of different porosity. By way of example, only the porous foaming element 36 has a smaller pore size zone 44 and a larger pore size zone 46. The porous foaming element 36 can be a compressible material or it can be fabricated so the pore size varies as prescribed. By way of example, only the compressible material may be a sponge material. Generally, as pore size decreases, foam quality changes. It has been observed that as the pore size decreases, the resulting foam appears softer or richer and, therefore, would be considered a higher quality foam. As air and liquid are forced under pressure through the porous foaming element 36, the quality of the foam increases.
    [0033] It will be appreciated by those skilled in the art that with a compressible porous foaming element, zones of different porosity are defined by the geometry of the piston 16 and the foam cone 14. Compression of the porous foaming element 36 is achieved during assembly. As shown in Figures 3 to 5, a variety of different configurations can be constructed so that the porous foaming element 35 has a compressed zone 44 having smaller pores and an expanded zone 46 having larger pores. The mixing chamber 37 filled with the porous foaming element 36 may have a generally bow-tie shape, as shown in Figure 3, wherein the larger pore size zone 46 is around the outside and the zone. of smaller pore size 44 is in the center. The mixing chamber 37 filled with the porous foaming element 36 can be shaped as half of a bow tie at the bottom, as shown in Figure 4, wherein the small pore size zone 44 is downstream of the size zone. of larger pore 46. The mixing chamber 37 filled with the porous foaming element 36 can be shaped as half of a bow tie on top, as shown in Figure 5, wherein the small pore size zone 44 is at the top. downstream of the larger pore size zone 46. Note that where the porous foaming element is made of compressible material, there may be a gradual transition of pore size between the large pore size zone 46 to the large pore size zone. small pore 44.
    [0034] In use, when the dispenser 10 is activated, the foam cone 14 moves inwardly relative to the bottle seal 18, thereby moving between a rest position to an activation position decreasing the liquid volume of the liquid chamber 20 and air chamber 22 thereby pressurizing liquid and air therein and forcing liquid and air under pressure into mixing chamber 37 filled with porous foaming element 36. modality is similar to that shown in US patent 8,104,650 filed by Lang et al. on January 31, 2012.
    [0035] An advantage of the mixing chamber 37 filled with the porous foaming element 36 is that it acts both as a foaming element and an anti-drip element. In this way, in the modality described above, a number of elements can be reduced. Comparing a prior art foaming component 49 shown in Figure 6 to the embodiment described above, most of the components are the same except that it does not include the porous foaming element 36. Instead, it includes a gauze tube upstream 50 having large gauze pores, downstream gauze tube 52 having smaller gauze pores and a Venturi-type ring 54 are all not required in the embodiments herein. Foam cone 14, valve 32, piston 16, O-ring 24, bottle seal valve 28, and bottle seal 18 are similar to those described above with respect to foaming assembly 12.
    [0036] It will be appreciated by those skilled in the art that the porous foaming element described above can also be used in other types of pumps, for example, dispenser 60 shown in Figure 10 and described in detail in filed US 13/458,318 on April 27, 2012 on behalf of Banks et al. Referring to Figures 7 to 10, the dispenser 60 includes a pump or foaming assembly 62 and a liquid container 64. The pump 62 includes a piston dome 66, a liquid and air bore 68, and a main pump body 70. Main pump body 70 includes an outlet nozzle 72. A mixing chamber 73 is defined by the outlet nozzle and a Venturi-type ring 76. A porous foaming element 74 is positioned in the outlet chamber. mixture 73 from the outlet nozzle 72. A Venturi-type ring 76 is downstream of the porous foaming element 74. A valve is positioned on the outlet nozzle 72 to selectively open and close the liquid outlet 82 from the liquid chamber 80. The liquid and air bore 68 and main body 70 define a liquid chamber 80. The piston dome 66 and the liquid and air bore 68 define the air chamber 84. Inward movement of the piston dome 66 in the main body 70 decreases the liquid volume of the liquid chamber 80 and the chamber of air 84, thereby forcing under pressure air and liquid through the liquid outlet 82 and the air outlet 83 into the porous foaming element 74. Air and liquid mixed together and then foaming into the porous element 74.
    [0037] The porous foaming element 74 is positioned in the outlet nozzle between the liquid chamber 80 and the Venturi-type ring 76 fills the area between them. In one embodiment, the porous foaming element 74 is made of a compressible material and a smaller pore size zone 86 is where the compressible material is more compressed than in the larger pore size zone 88. Element geometry The porous foaming element 74 is defined by the geometry of the outlet nozzle 72 and the Venturi-type ring 76. In the assembly process, the porous foaming element 74 is positioned on the nozzle 72 and then, the Venturi-type ring 76 is inserted. on the mouthpiece 72. The geometry of the Venturi ring 76 is configured to create a compressed area such that there is a smaller pore size zone 86 and a larger pore size zone 88, as best seen in Figure 9. In another embodiment, the porous foaming element is manufactured to have different pore sizes and to fill the area between the liquid chamber 80 and the Venturi-type ring 76.
    [0038] Referring to Figures 11 and 12, another example of a porous foaming assembly 90 is similar to that shown in US patent 5,443,569 filed by Uehira et al. on August 22, 1995, but modified to include a porous foaming element 106.
    [0039] The porous foaming assembly 90 includes a pump head 92, a bottle cap 94, an air piston 96, a piston 98 and a main body 100. The main body 100 and piston 98 define the chamber of liquid 102 and pump head 92, bottle cap 94, air piston 96, piston 98 and main body 100 define air chamber 104. Inward movement of pump head 92 in main body 100 decreases the volume of liquid from the liquid chamber 102 and the air chamber 104, thereby forcing air and liquid under pressure into a porous foaming element 106.
    [0040] The porous foaming assembly 90 includes a valve stem 108 and an air valve 110, a valve step 112, a liquid valve 114 and a main body seal 116. A spring 118 urges the head of pump 92 to a rest position. Moving the pump head 92 in the main body 100 and into an activation position decreases the air volume of the air chamber 104 and a liquid chamber 102. A mixing chamber 101 is filled with a porous foaming element and the shape of the porous foaming element 106 is defined by the geometry of the air piston 96 and the pump head 92 defining a smaller pore size zone 120 and a larger pore size zone 122.
    [0041] Referring to Figures 13 and 14, the dispenser 10 may additionally include a housing 124. The housing 124 has an actuator 126 that engages the foam cone 14 such that moving the actuator 126 moves the foam cone 14. Housing 124 may include a sensor 128 that activates the sensor's response to the sensor by sensing the presence of a user.
    [0042] It will be appreciated by those skilled in the art that by combining the mixing chamber and the porous medium into one element, the overall space package size can be reduced when compared to using a separate mixing chamber and a porous medium.
    [0043] Various modalities and aspects of the description will be described with reference to the details discussed below. The following description and drawings are illustrative of the description and are not to be construed as limiting the description. Several specific details are described to provide a thorough understanding of various embodiments of the present description. However, in certain examples, well-known or conventional details are described to provide a concise discussion of the embodiments of the present description.
    [0044] As used herein, the terms "comprises" and "comprising" are to be interpreted as being inclusive and open-ended, not exclusive. Specifically, when used in the specification and claims, the terms "comprises" and "comprising" and variations thereof mean that specific features, steps or components are included. These terms should not be interpreted to exclude the presence of other features, steps or components.
    [0045] As used herein, the term "exemplary" means "serving as an example, example or illustration", and is not to be interpreted as preferred or advantageous over the other configurations described herein.
    [0046] As used herein, the terms "about" and "approximately" should cover variations that may exist in the upper and lower limits of value ranges, such as variations in properties, parameters, and dimensions. In a non-limiting example, the terms "about" and "approximately" mean plus or minus 10 percent or less.
    [0047] As used herein, the term "substantially" refers to the complete or nearly complete range or degree of an action, feature, property, state, structure, item or result. For example, an object that is "substantially" attached should mean that the object is either fully attached or almost fully attached. The exact allowable degree of deviation from full plenitude may, in some cases, depend on the specific context. However, generally speaking, the proximity of realization will be such as to have the same result if the general and absolute conclusions were obtained. The use of "substantially" is equally applicable when used in a negative connotation to refer to the lack of action, characteristic, property, state, structure, item, or complete or near-complete result.
    权利要求:
    Claims (11)
    [0001]
    1. Foaming assembly (12, 62, 90), characterized in that it comprises: a porous foaming element (36, 74, 106) filled with porous material and having an air inlet (38), a liquid inlet (40) spaced apart and separate from the air inlet, and an outlet (41) at a downstream end, the porous foaming element having an upstream end spaced from the downstream end, wherein the porous material fills the porous foaming element from the upstream end to the downstream end, and has at least two zones of different pore sizes (44, 46, 86, 88) between the upstream and downstream ends of the forming element. porous foam; a liquid chamber (20, 80, 102) in fluid communication with the porous foaming element, the liquid chamber having a volume that is movable between a rest position to an activation position; an air chamber (22, 84, 104) in fluid communication with the porous foaming element, the air chamber having a volume which is movable between a rest position to an activation position; and whereby liquid and air are forced into the porous foaming element under pressure and air from the air inlet and liquid from the liquid inlet mix in the porous foaming element to form foam which exits through the exit.
    [0002]
    2. Foaming assembly (12, 62, 90) according to claim 1, characterized in that the porous foaming element (36, 74, 106) has a zone of smaller pore size (44, 86) and a larger pore size zone (46, 88).
    [0003]
    3. Foaming assembly (12, 62, 90) according to claim 2, characterized in that the zone of smaller pore size (44, 86) is downstream of the zone of larger pore size (46, 88).
    [0004]
    4. Foaming assembly (12, 62, 90) according to claim 2, characterized in that the zone of smaller pore size (44, 86) is upstream of the zone of larger pore size (46 , 88).
    [0005]
    5. Foaming assembly according to claim 1, characterized in that the porous foaming element is generally bow-tie shaped in cross section.
    [0006]
    6. Foaming assembly according to claim 1, characterized in that the foaming assembly additionally includes a foam cone (14), a piston (16) and a bottle seal (18) and in that the piston and bottle seal define the liquid chamber (20), the foam cone, the bottle seal and the piston define the air chamber (22) and movement into the foam cone into the seal bottle volume decreases the volume of the liquid chamber and the air chamber, thereby forcing air and liquid under pressure into the porous foaming element (36).
    [0007]
    7. Foaming assembly (12, 62, 90) according to claim 6, characterized in that the foaming element (36) is positioned in the foam cone (14) between the foam cone and the piston (16).
    [0008]
    8. Foaming assembly (12, 62, 90) according to claim 7, characterized in that the porous foaming element is made of a compressible material and a zone of smaller pore size is where the compressible material is more compressed than in a larger pore size zone.
    [0009]
    9. Foaming assembly (12, 62, 90) according to claim 8, characterized in that the shape of the foaming element (36) is defined by the geometry of the piston (16) and the cone of foam (14).
    [0010]
    10. Foam dispenser (10, 60), characterized in that it comprises: a liquid container (13, 64); a porous foaming element filled with porous material and having an air inlet, a liquid inlet spaced apart from the air inlet, and an outlet at a downstream end, the porous foaming element having an adjoining end. upstream spaced from the downstream end, wherein the porous material fills the foaming element from the upstream end to the downstream end, and has at least two zones of different pore sizes between the upstream and downstream ends of the element. porous foaming; a liquid chamber in fluid communication with the porous foaming element, the liquid chamber having a volume which is movable between a rest position and an activation position, an air chamber in fluid communication with the foaming element. porous foam, the air chamber having a volume that is movable between a rest position and an activation position; and whereby liquid and air are forced into the porous foaming element under pressure and air from the air inlet and liquid from the liquid inlet mix in the porous foaming element to form foam, that goes out through the exit.
    [0011]
    11. A method for making foam, characterized in that it includes the steps of forcing air under pressure into a porous foaming element (36, 74, 106) filled with porous material and forcing the liquid under pressure through a liquid inlet spaced apart from the air inlet into the porous foaming element filled with porous material (36, 74, 106), the porous foaming element having an upstream end spaced from a downstream end , wherein the porous material fills the porous foaming element from the upstream end to the downstream end, and has at least two zones of different pore sizes (44, 46, 86, 88) between the upstream and downstream of the porous foaming element, wherein air and liquid mix in the porous foaming element to form foam which exits through an outlet (41) at the downstream end.
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    同族专利:
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    US8820585B1|2014-09-02|
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    法律状态:
    2017-09-26| B25A| Requested transfer of rights approved|Owner name: DEB IP LIMITED (GB) |
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-04-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-07-20| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-09-08| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/03/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/842,281|US8820585B1|2013-03-15|2013-03-15|Foam dispenser with a porous foaming element|
    US13/842,281|2013-03-15|
    PCT/CA2014/050191|WO2014138958A1|2013-03-15|2014-03-07|Foam dispenser with a porous foaming element|
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