U.S. patent application number 14/536331 was filed with the patent office on 2015-05-07 for mixing and dispensing device.
The applicant listed for this patent is Mouse Trap Design, LLC. Invention is credited to Paul J. Mulhauser, Melanie R. Werner.
Application Number | 20150122837 14/536331 |
Document ID | / |
Family ID | 52014351 |
Filed Date | 2015-05-07 |
United States Patent
Application |
20150122837 |
Kind Code |
A1 |
Werner; Melanie R. ; et
al. |
May 7, 2015 |
MIXING AND DISPENSING DEVICE
Abstract
A device for mixing and dispensing fluids has first and second
walls that form a chamber connected to a nozzle. Inlets each
configured to receive one fluid are arranged in the first wall.
Proximate edges of the inlets are an equal distance from a central
point on the first wall. A seal having top and bottom surfaces and
a center through hole is secured in the chamber. The center hole is
substantially aligned with the central point. A surface area of the
top surface is greater than a sum of the sectional areas of the
inlets. A dispensing pump moves the seal between a sealed position
in which the bottom surface seals the inlets and an open position
in which the bottom surface is spaced away from the inlets to open
the inlets to draw the fluids into the chamber to form the mixture
for dispensing through the nozzle.
Inventors: |
Werner; Melanie R.;
(Carnegie, PA) ; Mulhauser; Paul J.; (New York,
NY) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Mouse Trap Design, LLC |
Carnegie |
PA |
US |
|
|
Family ID: |
52014351 |
Appl. No.: |
14/536331 |
Filed: |
November 7, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61962510 |
Nov 7, 2013 |
|
|
|
Current U.S.
Class: |
222/145.6 |
Current CPC
Class: |
B05B 11/3083 20130101;
B05B 11/3069 20130101; B29B 7/7438 20130101; B05B 11/0039 20180801;
B05B 15/20 20180201 |
Class at
Publication: |
222/145.6 |
International
Class: |
B05B 15/00 20060101
B05B015/00 |
Claims
1. A device for dispensing a mixture of at least two fluids
contained in at least two containers, comprising: a body comprising
first and second walls that form a chamber that is connected to a
nozzle; at least two spaced-apart inlets to the chamber arranged in
an array in the first wall of the body such that proximate edges of
the at least two inlets are an equal distance from a generally
central point on the first wall, each of the inlets having a
sectional area, and each of the inlets being configured to receive
the fluid from one of the at least two containers; a seal having a
top surface, a bottom surface, and a center through hole secured in
the chamber around a perimeter of the seal such that the center
through hole is substantially aligned with the central point;
wherein a surface area of the top surface is greater than a sum of
the sectional areas of the at least two inlets; wherein the seal is
moveable between a sealed position in which the bottom surface
seals the at least two inlets and an open position in which the
bottom surface is spaced away from the at least two inlets to open
the inlets to the chamber through the hole; and a dispensing pump
that is operable to move the seal between the sealed and the open
positions; wherein the nozzle is configured to dispense the mixture
upon activation.
2. The device as in claim 1, further comprising the at least two
containers, each container configured to hold one of the at least
two fluids.
3. The device as in claim 1, further comprising at least two flow
channels, each flow channel having a first end connected to one of
the containers and a second end connected to one of the inlets.
4. The device as in claim 3, wherein a sectional area of at least
one of the at least two flow channels is smaller than a sectional
area of the other of the at least two flow channels.
5. The device as in claim 1, further comprising at least two
independently actuable valves, each valve for controlling a flow of
one of the fluids into the chamber.
6. The device as in claim 1, further comprising an engaging member
positioned in the chamber proximal to the seal and having a surface
that engages the top surface of the seal.
7. The device as in claim 1, further comprising an engaging member
positioned in the chamber proximal to the seal and having a surface
comprising a rim that compressingly engages the top surface of the
seal.
8. The device as in claim 1, wherein the surface area of the top
surface is greater than a sectional area of the center through
hole.
9. The device as in claim 1, wherein an interior surface of the
first wall is substantially planar.
10. The device as in claim 1, wherein an interior surface of the
first wall is contoured to protrude into the chamber.
11. The device as in claim 1, wherein at least one of the top
surface and the bottom surface of the seal is planar.
12. The device as in claim 1, wherein at least one of the top
surface and the bottom surface of the seal is contoured.
13. The device as in claim 1, wherein at least one of the top
surface and the bottom surface is tapered.
14. The device as in claim 1, wherein the top surface of the seal
comprises a rim.
15. The device as in claim 1, wherein the bottom surface of the
seal comprises a rim.
16. The device as in claim 1, wherein the dispensing pump is
operable to move the seal to the open position to draw the fluids
from the containers through the at least two inlets into the
chamber through the hole to form the mixture and to move the seal
from the open position to the sealed position.
17. A device for dispensing a mixture of at least two fluids
contained in at least two containers, comprising: a body comprising
first and second walls that form a chamber that is connected to a
nozzle; at least two spaced-apart inlets to the chamber arranged in
an array in the first wall of the body such that proximate edges of
the at least two inlets are an equal distance from a generally
central point on the first wall, each of the inlets having a
sectional area, and each of the inlets being configured to receive
the fluid from one of the at least two containers; a seal having a
top surface, a bottom surface, and a central shaft secured in the
chamber by securing the central shaft in the first wall at the
central point such that the central shaft of the seal is
substantially aligned with the central point; wherein a surface
area of the top surface is greater than a sum of the sectional
areas of the at least two inlets; wherein the seal is moveable
between a sealed position in which the bottom surface seals the at
least two inlets and an open position in which the bottom surface
is spaced away from the at least two inlets to open the inlets to
the chamber; and a dispensing pump that is operable to move the
seal between the sealed and the open positions; wherein the nozzle
is configured to dispense the mixture upon activation.
18. The device as in claim 17, further comprising the at least two
containers, each container configured to hold one of the at least
two fluids.
19. The device as in claim 17, further comprising at least two flow
channels, each flow channel having a first end connected to one of
the containers and a second end connected to one of the inlets.
20. The device as in claim 19, wherein a sectional area of at least
one of the at least two flow channels is smaller than a sectional
area of the other of the at least two flow channels.
21. The device as in claim 17, further comprising at least two
independently actuable valves, each valve for controlling a flow of
one of the fluids into the chamber.
22. The device as in claim 17, wherein the dispensing pump is
operable to move the seal to the open position to draw the fluids
from the containers through the at least two inlets into the
chamber to form the mixture and to move the seal from the open
position to the sealed position.
Description
PRIORITY
[0001] This application claims priority to U.S. Provisional
Application No. 61/962,510, entitled "Mixing and Dispensing
Device," filed on Nov. 7, 2013.
BACKGROUND
[0002] Various devices are known in the art to dispense fluids.
Typically, dispensers hold a single fluid. However, it is often
desirable for multiple fluids to be stored in separate storage
containers within a single device, and then mixed and immediately
dispensed as a mixture from the device. In various industries,
including the cosmetic industry, it is desirable to have a device
that is configured to proportionally adjust the volumetric ratio of
each fluid that makes up the mixture, in order to provide a
customized product that includes each of a plurality of fluids.
SUMMARY
[0003] In an aspect, a device for dispensing a mixture of at least
two fluids contained in at least two containers is disclosed,
comprising: a body comprising first and second walls that form a
chamber that is connected to a nozzle; at least two spaced-apart
inlets to the chamber arranged in an array in the first wall of the
body such that proximate edges of the at least two inlets are an
equal distance from a generally central point on the first wall,
each of the inlets having a sectional area, and each of the inlets
being configured to receive the fluid from one of the at least two
containers; a seal having a top surface, a bottom surface, and a
center through hole secured in the chamber around a perimeter of
the seal such that the center through hole is substantially aligned
with the central point; wherein a surface area of the top surface
is greater than a sum of the sectional areas of the at least two
inlets; wherein the seal is moveable between a sealed position in
which the bottom surface seals the at least two inlets and an open
position in which the bottom surface is spaced away from the at
least two inlets to open the inlets to the chamber through the
hole; and a dispensing pump that is operable to move the seal
between the sealed and the open positions; wherein the nozzle is
configured to dispense the mixture upon activation.
[0004] In another aspect, a device for dispensing a mixture of at
least two fluids contained in at least two containers, comprising:
a body comprising first and second walls that form a chamber that
is connected to a nozzle; at least two spaced-apart inlets to the
chamber arranged in an array in the first wall of the body such
that proximate edges of the at least two inlets are an equal
distance from a generally central point on the first wall, each of
the inlets having a sectional area, and each of the inlets being
configured to receive the fluid from one of the at least two
containers; a seal having a top surface, a bottom surface, and a
central shaft secured in the chamber by securing the central shaft
in the first wall at the central point such that the central shaft
of the seal is substantially aligned with the central point;
wherein a surface area of the top surface is greater than a sum of
the sectional areas of the at least two inlets; wherein the seal is
moveable between a sealed position in which the bottom surface
seals the at least two inlets and an open position in which the
bottom surface is spaced away from the at least two inlets to open
the inlets to the chamber; and a dispensing pump that is operable
to move the seal between the sealed and the open positions; wherein
the nozzle is configured to dispense the mixture upon
activation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] FIGS. 1A-1B are cross-sectional front views of an aspect of
the mixing and dispensing device taken through the body and the
flow channels and showing a planar seal and a planar first wall
(FIG. 1A) as a partial assembly and (FIG. 1B) in the assembled
state;
[0006] FIGS. 2A-2B are cross-sectional front views of an aspect of
the mixing and dispensing device taken through the body and the
flow channels and showing a contoured seal and a planar first wall
(FIG. 2A) as a partial assembly and (FIG. 2B) in the assembled
state;
[0007] FIG. 3 is a cross-sectional front view of an aspect of the
mixing and dispensing device taken through the body and the flow
channels and showing a seal having a shaft as a partial
assembly;
[0008] FIGS. 4A-4C are orthographic front views of an aspect of the
device (with the body, the seal, and the flow channels shown in
cross-section for clarity) (FIG. 4A) in a resting mode, (FIG. 4B)
in a dispensing mode, and (FIG. 4C) in a rebound mode;
[0009] FIG. 5 is an orthographic front view of an aspect of the
device (with the body, the seal, and the flow channels shown in
cross-section for clarity);
[0010] FIGS. 6A-6C are aspects of the device, showing (FIG. 6A) an
exploded view of the device, (FIG. 6B) an exploded view of a
container, and (FIG. 6C) a container having a bladder;
[0011] FIGS. 7A-7B are exploded isometric views showing the device
having inlets and flow channels (FIG. 7A) each having an equal
sectional area and (FIG. 7B) each having different sectional
areas.
DETAILED DESCRIPTION
[0012] As shown generally in the Figures, aspects of a device 100
for dispensing a mixture of fluids are disclosed. As described
above, the device 100 comprises a body 105 comprising first and
second walls 111, 115 that faun a chamber 120 that is connected to
a nozzle 160. At least two spaced-apart inlets 130 to the chamber
120 are arranged in an array in the first wall 111, each of the
inlets 130 being configured to receive the fluid from one of the at
least two containers 105. A seal 140 for sealing the inlets 130 is
positioned in the chamber 120. A dispensing pump 150 is operable to
move the seal 140 from a sealed position (FIGS. 4A, 4B) to an open
position (FIG. 4C) and to draw the fluids from the containers 105
through the at least two inlets 130 into the chamber 120 to foam
the mixture. The nozzle 160 is configured to dispense the mixture
upon activation.
[0013] The device 100 is configured for use with at least two
containers 105 positioned in an array. In certain aspects, the
containers 105 may be positioned in a linear array (FIG. 6A) or a
non-linear array (not shown). Each container 105 is configured to
hold a fluid. In various aspects, the fluid may be a fragrance oil,
a solvent, a pigment, an ink, a dye, a medication, a cream, a
lotion, a dietary supplement, a flavoring, a spirit, a cleaning
substance, or any other such substance available in a liquid form.
Various optional features of the container 105 are shown in FIGS.
6A-6C and are described in detail below.
[0014] Referring to FIGS. 1-3, a body 110 has first and second
walls 111, 115 that form a chamber 120. The first wall 111 has an
interior surface 117 and a central point 112 thereon. As described
in greater detail below, the inlets 130 are positioned in the first
wall 111 relative to the central point 112. The interior surface
117 of the first wall 111 may be substantially, or in some cases,
completely, flat (FIGS. 2, 4, 5, 7) or may vary in, for example,
contours, tapers or other features (FIG. 1) to vary sealing
characteristics of the seal. For example, the interior surface 117
of the first wall 111 may have a protrusion into the chamber 120,
such as a convex or conical interior surface.
[0015] As shown generally in the Figures, at least two inlets 130
to the chamber 120 are configured to receive the fluid from the at
least two containers 105. Each inlet 130 has a sectional area and
at least one edge 131. The sectional area of each of the inlets 130
may be equal (FIG. 7A), or the sectional area of at least one of
the inlets may be smaller than a sectional area of other of the at
least two inlets (FIG. 7B). As shown generally in the Figures, at
least two inlets 130 are spaced-apart and arranged in a linear or
non-linear array in the first wall 111 of the body 110 relative to
the central point 112. As illustrated in FIGS. 1 and 2, proximate
edges 131 of the inlets 130 may be an equal distance from the
central point 112 on the interior surface 117 of the first wall
111.
[0016] Each inlet 130 is configured to receive fluid from one of
the containers 105. In an aspect, the device 100 comprises at least
two flow channels 170 each configured to carry fluid from one of
the containers 105 to the chamber 120 through a corresponding inlet
130. See, e.g., FIGS. 4A-4C. As illustrated in FIG. 6, each flow
channel 170 is connected at a first end 171 to a corresponding one
of the containers 105 and at a second end 172 to a corresponding
inlet 130 into the chamber 120. Each flow channel 170 has a
sectional area. The flow channels 170 may be compressible or
pliable, such as an elastomeric material made of, for example,
extruded PVC, silicone, etc., or the flow channels may be made of a
semi-rigid or rigid material. The sectional area of each flow
channel 170 may be equal (FIGS. 6A, 7A), and a volumetric ratio of
each fluid comprising the mixture may be adjusted by an adjustable
valve 180 (FIG. 6A) that independently adjusts the mass flow rate
of each one of the fluids that is drawn from a container 105
through the corresponding flow channel 170 during operation of the
device 100. Alternatively, the sectional area of at least one of
the flow channels 170 may be smaller than a sectional area of other
flow channels 170 (FIG. 7B) such that the volumetric ratio of each
fluid comprising the mixture may be directly proportional to the
sectional area of each flow channel 170, which may determine the
mass flow rate of the fluid therethrough during operation of the
device 100.
[0017] As illustrated generally in the Figures, a seal 140 having a
top surface 147 having a surface area, a bottom surface 148, and a
center through hole 143 is secured in the chamber 120 around a
perimeter of the seal 140. The surface area of the top surface 147
of the seal 140 is greater than a sum of the sectional areas of the
at least two inlets 130 and of a sectional area of the central
through hole 143. As shown in FIGS. 1 and 2, the center through
hole 143 is substantially aligned with the central point 112 on the
interior surface 117 of the first wall 111. The seal 140 may be
resilient, such as a material made of silicone or a
solvent-resistant thermoplastic elastomer, semi-rigid, or
rigid.
[0018] The 140 seal may be a planar member (FIGS. 1, 7) or may vary
in, for example, shape, size, and/or thickness, and may include
contours, tapers or other features (FIG. 2) to vary sealing and
opening characteristics of the inlets 130. As illustrated in FIGS.
2 and 5, the seal 140 may be secured about a peripheral edge and
may include retention or sealing features such as a rim 145 or
indenting sealing features. The seal 140 also may have a rim 145
around a peripheral edge and/or a perimeter of the hole (not
shown).
[0019] As described above, the seal 140 may be secured around its
perimeter in the chamber 120. As illustrated in FIGS. 1, 2, and 4,
in an aspect, a bottom surface 157 of the pump body 151 wall may
engage the top surface 147 of the seal 140. As illustrated in FIG.
5, in an aspect, there may be an engaging member 190 in the chamber
120 proximal to the seal 140. The engaging member 190 has a surface
197 that engages the top surface 147 of the seal 140. The surface
197 of the engaging member 190 may comprise a rigid rim 195 that
compressingly engages the top surface 147 of the seal 140 to secure
the seal 140 in the chamber 120. In an aspect (not shown) the seal
140 may be secured to one of the walls 111, 112 of the body 110,
such as a rim 145 around the outer perimeter of the seal 140 that
may engage a complementary groove (not shown) in the second wall
112 of the body 110 to secure the seal 140 in the chamber 120.
[0020] The seal 140 is moveable between a sealed position (FIGS.
1B, 2B, 4A, 4B) and an open position (FIG. 4C). The seal position
is controlled by operation of the dispensing pump 150, as described
in greater detail below. As illustrated in FIGS. 1B, 2B, 4A, and
4B, in the sealed position, the bottom surface 148 of the seal 140
seals the at least two inlets 130 in order to substantially, or in
some cases completely, prevent the anterograde flow of fluid into
the chamber 120 or cross-flow between inlets 130. As illustrated in
FIG. 4C, in the open position, the bottom surface 148 of the seal
140 is spaced away from the at least two inlets 130 to open the
inlets 130 to the chamber 120 to draw fluids from the containers
105 through the inlets 130 into the chamber 120 through the hole
143 to form the mixture.
[0021] As illustrated in FIGS. 4 and 6, a dispensing pump 150 is
positioned downstream from the chamber 120 and is configured to
communicate with a downstream nozzle 160. The dispensing pump 150
may be any appropriate pump known to those skilled in the art. The
dispensing pump 150 may be manually actuated or electronically
actuated with a manually actuated button that electronically
operates the dispensing pump assembly 150 by means of a motor
drive, for example.
[0022] The nozzle 160 may be configured for communication with the
dispensing pump 150 and may be configured to dispense the mixture
when the device 100 is in operation. The nozzle 160 may be any of a
variety of types of nozzle that is configured to dispense a spray,
mist, drop, stream, etc. of a mixture of fluids. The dispensing
pump may be any appropriate such pump used, for example, for
fragrances, creams, and the like and comprising injection molded
components, such as for example, a nozzle, a piston-type pump in a
dispensing chamber, a return spring, and having a check valve
between the piston and the nozzle.
[0023] As described above, and as illustrated in FIG. 6A, the
device 100 is configured for connection to at least two containers
105 each configured to contain a fluid. In an aspect, each
container 105 may be removable and refillable or replaceable. In
another aspect, each container 105 may be permanently affixed to
the device 100. The containers 105 may be of differing or the same
volume capacity, length, or diameter. In aspects, the containers
105 may be made from, by way of example, glass, plastic, metallic
materials, collapsible or pliable materials such as a bladder, or
materials that are resistant to degradation by the fluids contained
or to be contained therein. In an aspect, the containers 105 may be
clear to render the fluid contents visible. Optionally, a window
(not shown) is positioned in a wall of an opaque container 105 to
show the fluid contents thereof.
[0024] As illustrated in FIGS. 6A, 6B, each container 105 has a
closure device 101, such as a cap, seal, or the like that
substantially closes the container 105 so that the fluid contained
therein does not leak out. The closure device 101 may be either
integral with the container 105 or assembled. A port (not shown)
may be positioned in or integral with the closure device 101 to
provide communication between the container 105 and the
corresponding flow channel 170 when the port is in the opened
position. The port may be configured to receive a first end 171 of
the corresponding flow channel 170 or a coupling (not shown), such
as a spike, needle, nipple, zerk, or other such connector, that
connects or couples the distal end of the corresponding flow
channel 170 to the container 105. In an aspect, the port may be a
pierceable septum.
[0025] The container may be attached to a receptacle 102 by any
means known to those skilled in the art. In an aspect illustrated
in FIG. 6A, the receptacle 102 may be configured to receive a neck
of the container 105. The neck and the receptacle 102 may
threadably engage or the container 105 may snap-fit into the
receptacle 102.
[0026] As illustrated in FIG. 6B, each container 105 has a vent 103
that is configured for entry of atmospheric air into the container
105 as fluid is drawn out by operation of the dispensing pump 105.
The vent 103 substantially eliminates the buildup of vacuum in the
container 105 and is configured to substantially prevent leakage of
the fluid from the container 105. In aspects, the vent 103 may be
positioned within or is integral with the closure device 101 or the
port. By way of example, the vent 103 may be an elastomeric
duck-bill valve, a flapper valve, an umbrella valve, a diaphragm,
etc. In another example, the vent 103 may be a spring-loaded
assembly such as a ball or ball plunger that engages a sealing
aperture.
[0027] Optionally, as illustrated in FIG. 6B, a conduit 104, such
as a sipper tube, may be included in each container configured to
draw fluid from the interior of the container 105 and to
communicate with the distal end of the corresponding flow channel
170.
[0028] In certain aspects and as illustrated in FIG. 6C, a bladder
106 configured to hold the fluid may be positioned in the interior
of the container 105. The port may be in communication with the
interior of the bladder 106. In aspects, the bladder 106 may be at
least one of flexible, removable, replaceable, and refillable.
[0029] In aspects, the containers 105 and the body 110 may be
enclosed in a housing (not shown). In aspects, the housing may be
comprised of a single component or multiple components. In an
aspect, a portion of the housing may be removable or may be
configured to open or close to provide or restrict access,
respectively, to the containers 105, for example, as useful to
remove and replace a container 105. The housing may be made of
plastic, such as injection molded polycarbonates, polystyrenes,
etc.
[0030] Device 100 is shown in a resting mode in FIG. 4A. At rest,
seal 140 is in the sealed position. A sealing force against the
inlets is achieved by a preload stress upon the perimeter of the
top surface of the seal which passes through the seal to the bottom
surface of the seal positioned over the at least two inlets to seal
the inlets. A contoured bottom surface of the seal positioned
against a planar interior first wall contributes to the preload
stress by deforming the seal. The bottom surface of the seal forms
a contact with the interior of the first wall so that the seal is
substantially, or in some cases completely, sealed against the at
least two inlets. In another aspect (see, e.g., FIG. 1B), contoured
forms such as a conical or domed form, protruding from the interior
of the first wall of the chamber, contribute to the preload stress
by deforming the seal. The bottom surface of the seal forms a
contact with the interior of the first wall so that the seal is
substantially, or in some cases completely, sealed against the at
least two inlets.
[0031] Device 100 is shown in a dispensing mode in FIG. 4B. In the
dispensing mode, seal 140 is in the sealed position. The sealing
force between the bottom surface 148 of the seal 140 and the edges
of the inlets 130 seals fluid flow through the inlets 130. The
sealing force is increased by the increasing fluid pressure within
the chamber 120 which results from the movement of the piston into
the chamber 120 which decreases the volume of the fluid within
chamber 120 as the fluid is dispensed through the nozzle 160.
[0032] Device 100 is shown in a rebound mode in FIG. 4C. In the
rebound mode, seal 140 is moved to the open position. The piston
rises within the chamber 120 creating a negative pressure which
acts upon the top surface 147 of the seal 140 to draw the bottom
surface 148 of the seal 140 away from the interior surface 117 of
the first wall 111, which draws fluid from the container 105 into
the flow channels 170 and through the inlets 130 and the hole 143
into the chamber 120 to refill the chamber 120.
[0033] Another aspect of a device for dispensing a mixture of at
least two fluids is illustrated in FIG. 3. As described above, the
component parts and surfaces of the device designated as 100 were
referred to with corresponding reference numbers in the 100 series.
The component parts of the device shown in FIG. 3 are referred to
with reference numbers in the 200 series. For example, the body of
device 100 is designated 110, while the body of the device shown in
FIG. 3 is designated 210. The body 210, inlets 230, dispensing pump
250, nozzle, and each of their respective component parts and
surfaces of the device shown in FIG. 3 are the same as the
corresponding parts and surfaces of device 100 and therefore the
description of these parts is not repeated herein with respect to
the device 200 shown in FIG. 3.
[0034] As discussed above with respect to device 100, the device
shown in FIG. 3 comprises a body 210 comprising first and second
walls 211, 215 that form a chamber 220 that is connected to a
nozzle 260. There are at least two spaced-apart inlets 230 to the
chamber 220 arranged in the first wall 211 of the body 210 such
that proximate edges of the at least two inlets 230 are an equal
distance from a generally central point 212 on the first wall 211,
each of the inlets 230 having a sectional area, and each of the
inlets 230 configured to receive the fluid from one of the at least
two containers 205.
[0035] As illustrated in FIG. 3, a seal 240 having a top surface
247, a bottom surface 248, and a central shaft 246 is secured in
the chamber 220 by securing the central shaft 246 in the first wall
211 at the central point 212 such that the central shaft 246 of the
seal 240 is substantially aligned with the central point 212, of
the interior of the first wall 217.
[0036] The surface area of the top surface 247 of the seal 240 is
greater than a sum of the sectional areas of the at least two
inlets 230. The seal may be of low compliance force so as to be
drawn easily open by the dispensing pump to draw fluid through the
at least two inlets 230. The seal 240 may be resilient, such as a
material made of silicone or a solvent-resistant thermoplastic
elastomer, semi-rigid, or rigid.
[0037] The seal 240 is moveable between a sealed position and an
open position. The sealed position is controlled by operation of
the dispensing pump 250. In the sealed position, the bottom surface
248 of the seal 240 seals the at least two inlets 230 in order to
substantially, or in some cases completely, prevent the anterograde
flow of fluid into the chamber 220 or cross-flow between the at
least two inlets 230, each independently associated with fluid flow
from one of the at least two containers. In the open position, the
bottom surface 248 of the seal 240 is spaced away from the at least
two inlets 230 to open the inlets 230 to the chamber 220 to draw
fluids from the containers (not shown) through the inlets 230 into
the chamber 220 to form the mixture.
[0038] Referring still to FIG. 3, as described above with respect
to device 100, a dispensing pump 250 is operable to move the seal
240 from the sealed position to the open position to draw the
fluids from the containers 205 through the at least two inlets 230
into the chamber 220 to form the mixture. The nozzle (not shown) is
configured to dispense the mixture upon activation.
[0039] While the foregoing has been set forth in considerable
detail, it is to be understood that the drawings and detailed
aspects are presented for elucidation and not limitation. Design
variations, especially in matters of shape, size and arrangements
of parts may be made but are within the principles described
herein. Those skilled in the art will realize that such changes or
modifications of the invention or combinations of elements,
variations, equivalents or improvements therein are still within
the scope of the system and device as defined in the appended
claims.
* * * * *