U.S. patent application number 11/776141 was filed with the patent office on 2008-01-17 for connect/disconnect coupling for a container.
Invention is credited to Thomas Anthony Braun, Gary James Harris.
Application Number | 20080011785 11/776141 |
Document ID | / |
Family ID | 38923865 |
Filed Date | 2008-01-17 |
United States Patent
Application |
20080011785 |
Kind Code |
A1 |
Braun; Thomas Anthony ; et
al. |
January 17, 2008 |
Connect/Disconnect Coupling for a Container
Abstract
A coupling assembly for removing contents of a container from an
opening in the container. The coupling assembly includes a
container insert coupled to the container opening, the container
insert including an insert passage, and an insert vent path
extending through the container insert. The coupling assembly also
includes a unit including a unit cavity, a valve assembly
positioned axially therein, and a unit vent path. When the unit is
coupled to the container insert, the insert vent path mates with
the unit vent path to create a complete vent path extending from
within the container to a vent port on the unit, and the valve
assembly opens to place the insert passage in fluid communication
with the first unit cavity.
Inventors: |
Braun; Thomas Anthony; (Eden
Prairie, MN) ; Harris; Gary James; (Maple Grove,
MN) |
Correspondence
Address: |
MERCHANT & GOULD PC
P.O. BOX 2903
MINNEAPOLIS
MN
55402-0903
US
|
Family ID: |
38923865 |
Appl. No.: |
11/776141 |
Filed: |
July 11, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60807024 |
Jul 11, 2006 |
|
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Current U.S.
Class: |
222/400.7 ;
222/1 |
Current CPC
Class: |
F17C 13/04 20130101;
B67D 7/0294 20130101 |
Class at
Publication: |
222/400.7 ;
222/1 |
International
Class: |
B65D 83/14 20060101
B65D083/14 |
Claims
1. A unit for a coupling assembly for removing contents of a
container from an opening in the container, the unit comprising: a
main unit body including first and second unit ends; a coupling
ring with threads positioned to engage insert threads of a
container insert when coupled thereto, the coupling ring being
configured to rotate about the main unit body; a first unit seal
positioned to seal with respect to the container insert; a coupling
sleeve extending to the first unit end; a valve assembly positioned
axially within the coupling sleeve, the valve assembly including a
poppet member with first and second ends, the first end including a
valve that seals against a shoulder formed in a first unit cavity
defined by the unit, and a spring member positioned in the first
unit cavity to force the valve into a closed position against the
shoulder; wherein the unit defines a unit passage through the
coupling sleeve and the first unit cavity to a unit port, and
defines a unit vent path extending through the coupling sleeve to a
vent port.
2. The unit of claim 1, wherein, when the unit is coupled to the
container insert, the coupling sleeve defines a unit keyed surface
that mates with an insert keyed surface of the container
insert.
3. The unit of claim 1, wherein, when the unit is coupled to the
container insert, the unit vent path mates with an insert vent path
of the container insert to define a complete vent path extending
from within the container to the vent port.
4. The unit of claim 1, wherein, when the unit is coupled to the
container insert, the poppet member is forced against the spring
member so that the valve unseats with respect to the shoulder to
place the first unit cavity and the unit port in fluid
communication with an insert passage defined by the container
insert.
5. The unit of claim 1, further comprising an adapter including
first and second adapter ends, the first adapter end of the adapter
being configured to mate with the unit port, and the second adapter
end being configured to mate with a connector.
6. The unit of claim 5, wherein the connector is a quick
connect/disconnect connector.
7. A coupling assembly for removing contents of a container from an
opening in the container, the coupling assembly comprising: a
container insert configured to be coupled to the opening of the
container and having first and second insert ends, the container
insert including a first seal positioned adjacent to the first
insert end to seal the container insert with respect to the
container, and defining a first insert cavity with insert threads,
a second insert cavity, a third insert cavity with an insert valve
engagement member, and a dip tube engagement surface adjacent to
the second insert end for engaging a dip tube that extends into the
container, the container insert defining an insert passage
extending from the first insert end to the second insert end and
through the first, second, and third insert cavities, and the
container insert defining an insert vent path extending through the
container insert to the first insert cavity; and a dispense unit
including a main dispense body including first and second dispense
ends, and a coupling ring with threads positioned to engage the
insert threads when coupled thereto and a first dispense seal
positioned to seal the container insert with respect to the first
insert cavity, a coupling sleeve extending to the first dispense
end, a valve assembly positioned axially within the coupling
sleeve, the valve assembly including a poppet member with first and
second ends, the first end including a valve that seals against a
shoulder formed in a first dispense cavity defined by the dispense
unit, and a spring member positioned in the first dispense cavity
to force the valve into a closed position against the shoulder, and
the dispense unit defining a dispense passage through the coupling
sleeve and the first dispense cavity to a dispense port, and
defining a dispense vent path extending through the coupling sleeve
to a vent port; wherein, when the dispense unit is coupled to the
container insert, the insert vent path mates with the dispense vent
path to define a complete vent path extending from within the
container to the vent port, and the insert valve engagement member
forces the poppet member against the spring member so that the
valve unseats with respect to the shoulder to place the insert
passage in fluid communication with the first dispense cavity and
the dispense port
8. The coupling assembly of claim 7, wherein the coupling ring is
configured to rotate about the main dispense body.
9. The coupling assembly of claim 7, further comprising an adapter
including first and second adapter ends, the first adapter end of
the adapter being configured to mate with the dispense port, and
the second adapter end being configured to mate with a
connector.
10. The coupling assembly of claim 9, wherein the connector is a
quick connect/disconnect connector.
11. The coupling assembly of claim 7, further comprising a shipping
cap that is configured to seal the dip tube and the container
insert during shipping.
12. The coupling assembly of claim 11, wherein the shipping cap
includes cap threads formed on an outer surface thereof that are
sized to engage the insert threads formed in the first insert
cavity of the container insert, and a sealing member that seals
with respect to the first insert cavity of the container
insert.
13. The coupling assembly of claim 7, further comprising a key
coupled to an exposed surface of the container insert.
14. The coupling assembly of claim 13, wherein the key is
configured to provide a visual indicia of the contents of the
container, and wherein the visual indicia corresponds to a key ring
coupled to the dispense unit.
15. The coupling assembly of claim 7, wherein, when the dispense
unit is coupled to the container insert, the coupling sleeve
defines a dispense keyed surface that mates with an insert keyed
surface of the container insert.
16. The coupling assembly of claim 15, wherein the insert keyed
surface includes a plurality of keys that are sized and positioned
to engage key slots formed in the dispense keyed surface when the
dispense keyed surface mates with the insert keyed surface.
17. A method for dispensing contents of a container, the method
comprising: providing a container insert having first and second
insert ends, the container insert including a first seal positioned
adjacent to the first insert end to seal the container insert with
respect to the container, and defining a first insert cavity with
insert threads, a second insert cavity, a third insert cavity with
an insert valve engagement member, and a dip tube engagement
surface adjacent to the second insert end for engaging a dip tube
that extends into the container, the container insert defining an
insert passage extending from the first insert end to the second
insert end and through the first, second, and third insert
cavities, and the container insert defining an insert vent path
extending through the container insert to the first insert cavity;
providing a unit including a main unit body including first and
second unit ends, and a coupling ring with threads positioned to
engage the insert threads when coupled thereto and a first unit
seal positioned to seal the container insert with respect to the
first insert cavity, a coupling sleeve extending to the first unit
end, a valve assembly positioned axially within the coupling
sleeve, the valve assembly including a poppet member with first and
second ends, the first end including a valve that seals against a
shoulder formed in a first unit cavity defined by the unit, and a
spring member positioned in the first unit cavity to force the
valve into a closed position against the shoulder, and the unit
defining a unit passage through the coupling sleeve and the first
unit cavity to a unit port, and defining a unit vent path extending
through the coupling sleeve to a vent port; coupling the container
insert to an opening in the container; and coupling the unit to the
container insert such that the insert vent path mates with the unit
vent path to define a complete vent path extending from within the
container to the vent port, and the insert valve engagement member
forces the poppet member against the spring member so that the
valve unseats with respect to the shoulder to place the insert
passage in fluid communication with the first unit cavity and the
unit port.
Description
RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Patent
Provisional Application Ser. No. 60/807,024 filed on Jul. 11, 2006,
the entirety of which is hereby incorporated by reference.
[0002] This application is related to U.S. patent application Ser.
No. 11/095,125 filed on Mar. 30, 2005, the entirety of which is
hereby incorporated by reference.
BACKGROUND
[0003] A variety of industries use pails, drums, and larger
Intermediate Bulk Containers ("IBC's" or "Totes") for the delivery
of liquid chemical media. These containers typically have a variety
of closure sizes and styles depending on the size and type of
container. Some common closure types are threaded bung openings,
snap-in, and crimp-in closures. Some example threaded bung openings
include 2'' buttress female and 2'' NPS female (commonly used in 30
gal, 55 gal, and larger drums and IBC's), 63 mm male (commonly used
in 5 gal jerry cans), and European Mauser.
[0004] There are a billion or more rigid containers and countless
other types of semi-rigid and flexible containers produced each
year around the world. In order to extract the contents of a
container, most containers are simply tipped over so that the
contents inside are emptied through one of the openings of the
container or a simple valve inserted into the opening. Other
containers have an opening in the bottom (typically the larger
IBC's) that allow for a bottom dispense through a simple hand
valve.
[0005] A percentage of the containers are emptied of their contents
while the container remains upright using a top feed device such as
a hand operated pump or a motor driven mechanical positive
displacement pump that draws the contents out of the container via
a dip-tube. Most of these containers are intended to be low cost
"one way" containers (i.e., the containers are filled once and
never seen again by the original filler). The containers may be
refilled again by secondary fillers typically up to a maximum of
five refills before the containers are destroyed or recycled.
[0006] An example life cycle of a container includes the following.
Initially, pre-cleaned or in-housed cleaned containers are
received. Next, the containers are clean room chemical filled and
certified, and fitted with dust caps. Subsequently, the containers
are shipped as dedicated containers to the user. Next, a dust cap
is torn away and the user certifies the contents by checking
extractables and/or particles levels, and the dispense head is
installed. Next, the container contents are extracted, the dispense
head is removed, and new dust caps are installed for the return
trip. Subsequently, the empty container is shipped to a supplier.
Finally, the clean container is returned for filling or for
cleaning.
[0007] The basic system requirements for a dispense system for a
container are defined by the following four factors: closed or open
systems, reusable or disposable systems, industrial (low-purity)
grade or high grade (ultra-pure) chemical systems, and Department
of Transportation (DOT) or United Nations (UN) approved or
unapproved systems.
[0008] Closed systems are designed to prevent exposure of a user to
the contents of the container at any phase of the connection cycle
(disconnected phase, connecting/disconnecting phase, and connected
dispensing phase). Open systems have at least the following two
design possibilities: 1) a system that allows the user to be
exposed to the container contents (either liquid or vapors) when
the connect/disconnect system is being connected or disconnected
and/or when the system is in the connected/dispense phase, and 2) a
system that allows air to enter the container when product is
withdrawn or allows vapors to escape when the system is in the
connected/dispensing phase.
[0009] Reusable systems typically include a dip tube that is
intended to be used for many (100+) connection cycles. A reusable
system may have to be removed several times from the container
during its life to allow for cleaning. Disposable systems typically
include a dip tube that is intended to be used less than five
connection cycles and then thrown away. Disposable systems may be
inserted into the container once with the intent of being disposed
of along with the container.
[0010] Industrial (low-purity) grade (IPG) chemical systems make up
about 80% of all chemicals supplied. Chemicals that fall under this
category include those chemicals wherein the purity of the chemical
is suitable for common chemical applications such as industrial
cleaners, soaps, surfactants, clean-in-place (CIP) chemicals for
dairy and food, dry cleaning and laundry, and agricultural
pesticides and herbicides, as well as other general use
applications. IPG containers must be delivered in a reasonably
clean system but do not require the stringent clean requirements
needed for handling Ultra Pure chemicals such as metallic
extractability, total organic carbon (TOC), and particle
contaminants. High grade (ultra-pure) chemical systems (HPG)
applications make up about 20% of all chemicals supplied. Chemicals
that fall under this category include chemicals wherein the purity
of the chemical must meet criteria for which ultra filtration down
to the parts per million (PPM), parts per billion (PPB), or even
parts per trillion (PPT) of particles and/or metals. This
classification typically involves such specialized applications as
microelectronics, laboratory, and biopharmaceutical industries.
[0011] The specific product requirements that differentiate an IPG
from an HPG system are primarily related to the materials of
construction, handling procedures, and whether the system is
"closed" or "open", as described above. As to materials of
construction, metals are typically not allowed or desired to come
in contact with the container contents. Plastic resins must be very
clean and free from metallic contaminants, colorants, etc. These
same standards apply for seals that may come into contact with the
container contents.
[0012] As to handling procedures, the materials must be handled in
a way that minimizes the transfer of contaminants to the piece
parts or finished goods during production or shipping (e.g., mold
release agents are not allowed), regrind plastic resin should not
be used in components that have direct contact with the container
contents, and lubricants are typically not permitted.
[0013] Whether the system is "closed" or "open" is relevant to the
extent that Ultra-Pure chemicals often require minimum contact with
oxygen. Typically, an inert gas "blanket" is maintained within the
container above the container contents versus allowing air, which
has a higher O.sub.2 content, to enter the container and make up
for the container contents that are removed. Typically this blanket
gas will be nitrogen, CO.sub.2, or other inert gas.
[0014] Whether or not a dispense system is DOT and/or UN approved
relates to standards for shipping a combined container and closure
system. This combination of container and closure system must be
approved and certified by the DOT and/or the UN before being
transported. Container with closure systems that are used "in
house" therefore are required to meet different safety and other
standards as opposed to container with closure systems that must be
shipped over-the-road.
SUMMARY
[0015] One aspect of the present disclosure relates to a coupling
assembly for removing contents of a container from an opening in
the container. The coupling assembly includes a container insert
coupled to the container opening and having first and second insert
ends, the container insert including a first seal positioned
adjacent to the first insert end to seal the container insert with
respect to the container, and defining a first insert cavity with
insert threads, a second insert cavity, a third insert cavity with
an insert valve engagement member, and a dip tube engagement
surface adjacent to the second insert end for engaging a dip tube
that extends into the container, the container insert defining an
insert passage extending from the first insert end to the second
insert end and through the first, second, and third insert
cavities, and the container insert defining an insert vent path
extending through the container insert to the first insert cavity.
The coupling assembly also includes a unit including first and
second unit ends, and a coupling ring with threads positioned to
engage the insert threads when coupled thereto and a first unit
seal positioned to seal the container insert with respect to the
first insert cavity, a coupling sleeve extending to the first unit
end, a valve assembly positioned axially within the coupling
sleeve, the valve assembly including a poppet member with first and
second ends, the first end including a valve that seals against a
shoulder formed in a first unit cavity defined by the unit, and a
spring member positioned in the first unit cavity to force the
valve into the closed position against the shoulder, and the unit
defining a unit passage through the coupling sleeve and the first
unit cavity to a unit port, and defining a unit vent path extending
through the coupling sleeve to a vent port. When the unit is
coupled to the container insert, the insert vent path mates with
the unit vent path to define a complete vent path extending from
within the container to the vent port, and the insert valve
engagement member forces the poppet member against the spring
member so that the valve unseats with respect to the shoulder to
place the insert passage in fluid communication with the first unit
cavity and the unit port.
[0016] The above summary is not intended to describe each disclosed
embodiment or every implementation. Figures in the detailed
description that follow more particularly exemplify embodiments.
While certain embodiments will be illustrated and describing
embodiments of the invention, the present disclosure is not limited
to use in such embodiments.
DESCRIPTION OF THE DRAWINGS
[0017] Referring now to the drawings in which like reference
numbers represent corresponding parts throughout:
[0018] FIG. 1 is a perspective view of an example coupling assembly
with adapters, a connector, and a dip tube exploded therefrom;
[0019] FIG. 2 is a perspective view of the coupling assembly of
FIG. 1 in exploded form;
[0020] FIG. 3 is a top view of an example container insert of the
coupling assembly of FIG. 1;
[0021] FIG. 4 is a cross-sectional view of the container insert of
FIG. 3 taken along line 4-4;
[0022] FIG. 5 is a cross-sectional view of the container insert of
FIG. 4 taken along line 5-5;
[0023] FIG. 6 is a bottom view of an example dispense unit of the
coupling assembly of FIG. 1;
[0024] FIG. 7 is a cross-sectional view of the dispense unit of
FIG. 6 taken along line 7-7;
[0025] FIG. 8 is a cross-sectional view of the coupling assembly of
FIG. 1 coupled to an example container; and
[0026] FIG. 9 is an enlarged view of a portion of the coupling
assembly of FIG. 8.
DETAILED DESCRIPTION
[0027] In the following description of the illustrated embodiments,
reference is made to the accompanying drawings that form a part
hereof, and in which is shown by way of illustration of
embodiments. It is to be understood that other embodiments may be
utilized as structural changes may be made without departing from
the spirit and scope of the present disclosure.
[0028] An example coupling assembly 10 is shown and described with
reference to FIGS. 1-9. Coupling assembly 10 includes a container
insert 12, a dispense unit 14, and a dip tube 16. In example
embodiments, container insert 12 and dispense unit 14 are
configured for a quick connect/disconnect function relative to each
other.
[0029] For example, as shown in FIG. 1, dispense unit 14 includes a
port 127 that is configured to accept an adapter 57 that is
threaded therein. An opposite end of adapter 57 includes a
connector structure 58 that is configured for connection with a
connector 59. In example embodiments, connector 59 is a quick
connect/disconnect connector such as that disclosed in U.S. Pat.
No. 6,231,089 filed on Mar. 10, 1999, the entirety of which is
hereby incorporated by reference.
[0030] In addition, dispense unit 14 includes a vent port 79 that
is configured to accept an adapter 49 that can be threaded therein.
An opposite end of adapter 49 includes a barbed surface 47 for
connection with a hose (not shown) that is, in turn, connected to a
source of gas such as air.
[0031] In example embodiments, coupling assembly 10 provides a
semi-closed system for dispensing and storing contents in a
container. In the embodiment shown, coupling assembly 10 is not a
closed system, in that dip tube 16 and container insert 12 do not
have a shut-off valve. Coupling system 10 includes a shipping cap
13 that seals dip tube 16 and container insert 12 during shipping.
Because there is no separate valve in dip tube 16 and container
insert 12, the contents of the container to which container insert
12 is coupled can be exposed to a user outside of the container
during the typically brief time when shipping cap 13 is removed and
dispense unit 14 is not yet connected to container insert 12.
[0032] When in the connected state, the following three general
configurations exist for managing the vapors and potential user
contact with the container contents: [0033] a fully open vent that
provides air intake into the drum while vapors are allowed to
escape through the same opening that the incoming air travels
through; [0034] a checked un-ported vent that is typically an air
checking device control that is incorporated into the container
insert or the dispense unit, allowing venting air into the
container but not allow vapors or the container contents out
through the vent opening; or [0035] a ported vent that involves
incorporation of an isolated and sealed air vent flow path through
the container insert into the dispense unit, which would have an
external port. For example, a barb flared (MPT) can be used and
would allow the user to have potentially three options for managing
the pressure conditions inside the drum as follows: (1) simply vent
the vapors to atmosphere, (2) install a one-way check valve into
the port that allows air into the drum, but not allow vapors out of
the same port (this would provide for a sealed container in the
event of a tip over condition), or (3) plumb the vapor flow path to
a controlled location such as an air scrubber or filter (this
option may provide a method for the end user to apply an inert
layer of "blanket gas" to the container contents to prevent
oxidation (e.g., nitrogen)). Of these several options, a fully open
vent does not provide a sealed container, although the option can
be inexpensive. A ported vent option provides the most flexibility,
although it can involve a compromise between flow capacity and
expense. A checked unported vent is a solution between the fully
opened vent and the ported vent options.
[0036] Coupling assembly 10 can include any of these venting
options. In the examples described and shown herein, coupling
assembly 10 includes the ported vent option.
[0037] Coupling assembly 10 can be suited for industrial pure grade
(IPG) applications, although the use of certain materials can make
coupling assembly 10 available for use with high purity grade (HPG)
chemical systems as well. In example embodiments, coupling assembly
10 is also designed to be capable of being Department of
Transportation (DOT) or United Nations (UN) Certified with a
variety of different container sizes.
[0038] In example embodiments, it is desirable that the container
is compatible with a plurality of chemicals and other container
contents while minimizing the number of container insert
configurations so as to minimize potential inventory while
maximizing build lots. Two factors that influence this objective is
the material selection for the container insert 12 and related
seals (not shown), and the number of container interfaces. Both
polyethylene and polypropylene can be used for the container insert
material because of the very broad chemical compatibility and
relatively low cost of these materials. Other materials for
construction include high-density polyethylene (HDPE) or Teflon
materials such as PTFE or PFA for applications related to high
purity grade (HPG) chemical systems.
[0039] One consideration when choosing materials for container
insert 12 is the DOT/UN Certification requirement that requires
testing at 0.degree. F., a temperature at which polypropylene
materials often do not perform well. The materials may also be
"Fluorinated," which is a process that exposes the finished
polyethylene part to a Fluorine gas resulting in a part that has
typically better chemical resistance than standard polyethylene
materials.
[0040] In example embodiments, container insert 12, dip tube 16,
and associated sealing member positioned between container insert
12 and the container are designed so that the combined cost of
these features is such that it is cost effective to dispose of
these components, for example, when the container is disposed of or
after a limited number of uses.
[0041] In example embodiments, container insert 12 is a disposable
part that has a life of about, for example, five to ten cycles.
Container insert 12 can be designed to be a relatively low cost
product. Alternatively, in other embodiments, container insert 12
can be constructed in a way so that it has a greater life
cycle.
[0042] Dip tube 16 can be made from materials different from those
used by container insert 12 or dispense unit 14. For example, in
industrial pure grade (IPG) applications, the dip tube can include
a "rigid" polytube such as polypropylene, polyethylene, or a soft
flexible TYGON type material. In example embodiments, dip tube 16
is about 3/8 to about 3/4 inches in outer diameter. For high pure
grade (HPG) applications, tubing can be made of a rigid type
material such as FEP or PFA having dimensions of about 1/2 to about
1 inch in outer diameter with a wall thickness of about 0.06 to
0.07 inches.
[0043] In example embodiments, all of the components of coupling
assembly 10 are made from a polymer material due to the relatively
low cost and high resistance to wear and corrosion of these
materials as compared to metals and other materials. This can
include springs or other mechanisms that may be required in
coupling assembly 10. In some embodiments, coated metal materials
or metal materials can be used at locations that are not exposed to
the container contents. Some example materials for use in the
springs include Hastelloy C, 316SS, PPS, PEEK, and PTFE/FEP
encapsulated 316SS.
[0044] In the examples shown, coupling assembly 10 can be used for
container applications that involve a "pump sucking" of the
container contents from the container, so that coupling assembly 10
can be exposed to a slight vacuum pressure (e.g., of about -5 psi
maximum). Typically, drum pressure ratings are about 15 psig for
plastic materials and 36 psig for metal materials. In example
embodiments, coupling assembly 10 is designed for use within a
temperature range of about -32.degree. to 140.degree. F.
[0045] Coupling assembly 10 can be configured with features that
reduce fluid spillage upon disconnect of the container insert 12
and the dispense unit 14. In one embodiment, the fluid spillage at
disconnect is minimized to levels less than 0.1 cc/disconnect range
if possible.
[0046] Coupling assembly 10 can also configured to minimize the
turbulence in the flow path through the coupling assembly.
Agitation of the pump contents is minimized in order to avoid
aeration of the pumped material and the generation of particles and
degradation of flow performance. Coupling assembly 10 is also
functional without the use of lubricant.
[0047] Referring now to FIGS. 1-5, container insert 12 includes
first and second ends 24, 26, an open passage 23 that defines a
flow path, a dip tube engagement surface 30, and a valve engagement
member 32.
[0048] Dip tube engagement surface 30 include ribs, channels or
features on an internal or external surface of container insert 12
at first end 24 for connection of dip tube 16. Valve engagement
member 32 is positioned within a wall 33 forming a cavity 31 within
passage 23 of container insert 12. Valve engagement member 32
includes a wall structure 40 with an end 42 and a slot 46 formed
therein. Slot 46 can be useful for facilitating draining of any
fluids collected around a wall structure 40, thereby preventing
fluids from puddling within container insert 12 and reducing the
chance for exposure by the user to the container contents.
[0049] Second end 26 includes a wall 63 forming an open cavity 64
and includes a plurality of threads 66 formed thereon, a container
engagement member 70, and a sealing member 72.
[0050] Container engagement member 70 can have any number of
different sizes and features for connecting to a particular
container opening. For example, member 70 can be in the form of a
bung, cap, or pail cover, such as, for example, a two inch buttress
bung, S56X4 buttress bung, S70X6 buttress bung, a two inch NPS or
BSP bung, a DIN 61, an S63 cap, or a flex spout or other removable
pail cover. In the example shown, container engagement member 70
includes a bung style male threaded portion having a plurality of
threads 71 sized to fit within a common threaded opening of a
container.
[0051] Seal member 72 provides a sealing function between container
insert 12 and the container.
[0052] Shipping cap 13 is used to seal the container when dispense
unit 14 is not coupled to the container insert 12. Shipping cap 13
includes threads 19 formed on an outer surface thereof that are
sized to engage internal threads 66 of second end 26 of container
insert 12. Shipping cap 13 also includes a sealing member 17, such
as an O-ring or similar structure, that is capable of forming a
seal between an outer circumference surface of sealing member 17
and an inner surface of second end 26 of container insert 12.
[0053] Shipping cap 13 also includes an actuator seat 15 that is
configured for engagement by an off-the-shelf tool such as, for
example, a #4 Phillips or a 3/8'' flat standard screwdriver, or a
standard square, hexagon, or torque type driving tool structure.
Although it is possible to form actuator seat 15 with features that
would require a specialized installation tool for installing and
removing the container insert, or applying a specific amount of
torque in doing so, the actuator seat 15 in the example shown is
configured to provide a relatively reliable seal that can be
established with a relatively low amount of torque using a
relatively conventional tool available to most users. Thus,
shipping cap 13 provides additional convenience for a user while
minimizing the chances of damaging cap 13 or container insert 12
from the user over tightening shipping cap 13, which may more
frequently occur when using specialized tools.
[0054] In example embodiments, a keying scheme is used to assist
the user in determining which dispense unit should be connected to
a container insert of a container. In one example, no keying is
provided. In another example, visual keys are provided on the
dispense unit and container insert. In another example, visual
and/or mechanical keys are provided. Example keying schemes are
described below.
[0055] In example embodiments, a key member 65 (see FIG. 2) is
positioned within a cavity 28 of passage 23 of container insert 12.
Key member 65 includes a plurality of key slots 67 formed therein
that correspond to keys formed in a mating portion of dispense unit
14, as described below. In the example embodiment shown, key member
65 is a separate member that is snap fit (see detent 89 of
container insert 12 shown in FIG. 9 that engages key member 65) or
otherwise coupled within cavity 28. In alternative embodiments, key
member 65 can be integrally formed within cavity 28 of container
insert 12. In example embodiments, key member 65 forms an
interference fit with the walls of cavity 28 so that key member 65
can be rotated within cavity 28. In this manner, key member 65 and
dispense unit 14 attached thereto can be spun after dispense unit
14 is coupled to container insert 12 to, for example, change the
direction of lines extending from dispense unit 14 (e.g., connector
59).
[0056] Container insert 12 also includes a key 29 coupled to an
exposed surface of insert 12 (see, e.g., port 27 in FIG. 8). Key 29
can include text, color, or other indicia that indicates the
contents of the container to which container insert 12 is coupled.
In addition, dispense unit 14 includes a key ring 39 coupled
thereto. See FIGS. 2 and 7. Key ring 39 can include text, color, or
other indicia that indicates the container to which dispense unit
should be connected. For example, in one embodiment, key 29 and key
ring 39 are both colored the same color so that visual confirmation
that dispense unit 14 can be coupled to container insert 12 is
provided. Such a configuration can be used in conjunction with the
keying structures identified above and/or the smart technology
described below to assure that the dispensing unit is connected to
the proper container insert.
[0057] Container insert 12 includes a vent passage 77 defined
adjacent to second end 26. See FIGS. 2 and 8. Vent passage 77
extends from between threads 71 of container engagement member 70
through wall 63 of container insert 12 and threads 66 to cavity 64.
Vent passage 77 facilitates venting of gas into and out of the
container to which container insert 12 is attached, as described
further below.
[0058] Referring now to FIGS. 1, 6, and 7, dispense unit 14
includes a coupling ring 80, a coupling sleeve 82, a spring 84, an
adapter member 86, and a valve assembly 88.
[0059] Coupling ring 80 includes a drum insert engagement surface
96 having a plurality of threads 97, and coupling ring 80 engages a
seal 83 positioned between coupling ring 80 and coupling sleeve
82.
[0060] Drum engagement surface 96 and associated threads 97 are
configured to engage the plurality of threads 71 of container
engagement member 70. Actuator surface 98 (e.g., projections) is
used by a user to rotate engagement surface 96 once threads 97 are
in position for engagement with threads 71 of the container insert
12. A seal 131, such as an O-ring, is positioned adjacent on drum
engagement surface 96 to form a seal between dispense unit 14 and
wall 63 forming cavity 64 of container insert 12.
[0061] A vent passage 78 extends through dispense unit 14 to vent
port 79. See FIGS. 2 and 8. Specifically, vent passage 78 extends
through coupling ring 80, along a passage formed between a portion
of ring 80 and coupling sleeve 82, and to vent port 79. Vent
passage 78, in conjunction with vent passage 77 of container insert
12, provides a vent path between the inside of the container to
which coupling 10 is attached and the environment outside of the
container (i.e., a line attached to vent port 78).
[0062] Coupling sleeve 82 includes first and second ends 100, 102,
a sealing member 104, a key member 106, and a poppet sealing
surface 114. Sealing member 104, such as an O-ring, is positioned
at first end 102 and is configured to provide a fluid seal between
first end 102 of the coupling sleeve 82 and the walls forming open
cavity 28 of container insert 12.
[0063] Key member 106 can be integrally formed into coupling sleeve
82, or can be a separate member (as shown in FIGS. 2 and 7) that is
snap fit or otherwise coupled to the coupling sleeve 82 at a
predetermined position (see detent 87 of key member 106 shown in
FIG. 9 that engages coupling sleeve 82). Key member 106 includes a
plurality of keys 108 that are sized and positioned to engage key
slots 67 formed on key member 65 of container insert 12. See FIGS.
6, 8, and 9. If keys 108 are not aligned with key slots 67, key
member 106 cannot be inserted into key member 65, thereby not
allowing dispense unit 14 to be coupled to container insert 12.
Keying can be provided to, for example, stop the coupling of a
dispense unit 14 to an improper container insert 12.
[0064] Poppet sealing surface 114 extends within an interior
diameter of the coupling sleeve 82 and provides a fluid seal
between valve assembly 88 and coupling sleeve 82. In some
embodiments, poppet sealing surface 114 can be located at other
positions along the length of coupling sleeve 82 depending on, for
example, the size, shape, and position of various valve assembly
members and the desired sealing surface defined by the valve
assembly members.
[0065] Spring 84 is positioned within a bore 120 of adapter member
86 and provides a spring force against valve assembly 88, thereby
maintaining a seal between valve assembly 88 and coupling sleeve 82
when dispense unit 14 is in a closed or rest state. Valve assembly
88 is shown in an open state in FIG. 7. Spring 84 can be made from
any material suitable for the coupling assembly 10 application, and
can include, for example, polymer materials, metal materials, or
embedded metal materials.
[0066] Adapter member 86 includes an adapter portion 128 with a
port 127 with threads 129, and a coupler sleeve connection member
130. Adapter portion 128 is sized to connect to a dispense line
(not shown) via adapter 57 and connector 59. See FIG. 1. The
adapter portion 128 can include structures on an external surface
thereof that assist in providing a sealed connection with a
dispense line, such as threads 129. Connection member 130 can have
any desired configuration for securing adapter member 86 to the
coupling sleeve 82 with a releasable or a permanent connection.
[0067] Valve assembly 88 includes poppet 132 with a passage 133,
first and second ends 138, 140, and a sealing member 134 such as an
O-ring. Poppet 132 is shaped to form a seal with poppet seat
surface 114 of coupling sleeve 82. Poppet 132 can seal with
coupling sleeve 82 at various positions on poppet 132 such as, for
example, on a slanted surface or on a surface extending parallel to
an axis of dispense unit 14. Sealing member 134 provides additional
sealing function between valve assembly 88 and coupling sleeve
82.
[0068] First end 138 of poppet 132 extends axially from valve
assembly 88 of poppet 132 to first end 102 of coupling sleeve 82.
Second end 140 can include a plurality of openings adjacent to
poppet 132 to promote flow of the container contents through valve
assembly 88. First end 138 of valve poppet 132 is configured to
contact valve engagement member 32 of container insert 12. In use,
first end 138 of poppet 132 contacts valve engagement member 32 and
moves poppet against the axial forces applied by spring 84 to open
and close the valve assembly 88. In the open position, passage 133
is in fluid communication with bore 120 and port 127.
[0069] Referring now to FIGS. 8 and 9, dispense unit 14 is shown
coupled to container insert 12 to form coupling assembly 10.
[0070] As dispense unit 14 is inserted into container insert 12,
keys 108 of key member 106 of dispense unit 14 are inserted into
key slots 67 of key member 65 of container insert 12. If keys 108
do not align with key slots 67, the coupling of dispense unit 14
with container insert 12 is prevented. Otherwise, if keys 108 do
align with key slots 67, dispense unit 14 can be coupled to
container insert 12.
[0071] As dispense unit 14 is inserted, threads 97 of drum insert
engagement surface 96 of coupling ring 80 engage threads 66 of wall
63 within cavity 64 of container insert 12. Coupling ring 80 is
rotated to thread dispense unit 14 onto container insert 12. Seal
131 of drum engagement surface 96 forms a seal between dispense
unit 14 and wall 63 forming cavity 64 of container insert 12 as
dispense unit 14 is threaded onto container insert 12.
[0072] In example embodiments, coupling ring 80 can rotate freely
relative to the coupling sleeve 82, thereby making it possible for
key features 67, 108 to remain in engagement with each other and
continue to move axially relative to each other while the threads
97 rotate relative to the threads 66.
[0073] As dispense unit 14 is threaded onto container insert 12,
dispense unit 14 moves axially such that first end 102 of coupling
sleeve 82 is inserted into dispense unit 14 until seal 104 engages
the wall forming cavity 31. As coupling sleeve 82 is inserted,
second end 138 of poppet 132 contacts end 42 of wall structure 40
of engagement member 32. Wall structure 40 forces poppet 132
axially against spring 84 so that sealing member 134 is unseated
from poppet seat surface 114 of coupling sleeve 82.
[0074] In the coupled state as shown in FIG. 8, container insert 12
is coupled to an example container 300, and container insert 12 and
dispense unit 14 together form a fluid path 111 from second end 24
of container insert 12 to port 127 of dispense unit 14. In this
manner, fluid can flow to/from container 300 coupled to container
insert 12 to/from equipment coupled to port 127 of dispense unit
14.
[0075] In addition, a vent path 113 is formed by vent passage 77 of
container insert 12 and vent passage 78 of dispense unit 14. In
this manner, vent path 113 extends from within the container to
which container insert 12 is coupled, through passages 77, 78, and
to vent port 79 of dispense unit 14.
[0076] In example embodiments, when a vacuum pressure condition
exists within the container when, for example, fluid is being
extracted, vent path 113 allows airflow from outside the container,
through port 79, passages 77, 78, and into the internal volume of
the container. In one embodiment, a hose from an air compressor can
be connected to port 79 to force air through vent path 113 to
assist in the extraction of fluid from the container.
[0077] The sequence of connecting and valving functions for the
coupling assembly 10 enables: 1.) proper keying of the container
insert 12 and dispense unit 14 features, 2.) a positive connection
between the container insert 12 and dispense units 14, and 3.)
opening of the valve for dispensing of the contents of the
container.
[0078] As described above, in alternative embodiments, coupling
assembly 10 includes a "smart reader" system for identifying
information related to the container and the container contents to
which container insert 12 and dispense unit 14 are coupled. For
example, container insert 12 can include a radio frequency
identification tag, and dispense unit 14 can include a radio
frequency identification reader. The reader can read information
from the tag related to the container, such as the size and
certification, and information related to the container insert such
as, for example, certification ratings, number of uses, the
contents of the container, the dates when the container was filled
or emptied, and the length of time of connection between container
insert 12 and dispense unit 14. This information can be
communicated to a remote location. Additional details regarding
such a system can be found in U.S. patent application Ser. No.
11/095,125 filed on Mar. 30, 2005. Additional details regarding
radio frequency devices incorporated into connectors is found in
U.S. Pat. No. 6,649,829 filed on May 21, 2002, the entirety of
which is hereby incorporated by reference.
[0079] In the examples shown, it can be advantageous in some
embodiments to use a separate key member 106 that is coupled to
coupling sleeve 82 of dispense unit 14. A separate key member 106
can be produced for many different key configurations related to,
for example, different container contents, industries, etc. Thus,
the majority of dispense unit 14 components can be produced with a
single design while only key member 106 is changed and separately
coupled to coupling sleeve 82 for different keying configurations
and applications. In other embodiments, the features of key member
106 can be integrally formed into the coupling sleeve 82, which
option may be well suited for high production of a single key
configuration.
[0080] In example embodiments herein, the unit 14 is described as a
"dispense" unit. However, in alternative embodiments, the unit and
container insert can be used to fill or otherwise insert material
into the container, as opposed to dispensing material from the
container.
[0081] The above specification provides a complete description of
the manufacture and use of the disclosed embodiments. Since many
alternative embodiments can be made without departing from the
spirit and scope of the present disclosure, the invention resides
in the claims hereinafter appended.
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