U.S. patent application number 17/403035 was filed with the patent office on 2022-05-19 for adapter for canister filling system and method for filling a gas canister.
This patent application is currently assigned to Sodastream Industries Ltd.. The applicant listed for this patent is Sodastream Industries Ltd.. Invention is credited to Amit Avigdor, Dvir Brand, Avi Cohen, Guy Danieli, Mark Funt, Hagai Harduff, Doron Krom, Allan Ring, Eran Shaashua, Oren Shalev, Amnon Shkedi, Eyal Shmueli, Avraham Vaknin.
Application Number | 20220154887 17/403035 |
Document ID | / |
Family ID | 1000006316071 |
Filed Date | 2022-05-19 |
United States Patent
Application |
20220154887 |
Kind Code |
A1 |
Danieli; Guy ; et
al. |
May 19, 2022 |
ADAPTER FOR CANISTER FILLING SYSTEM AND METHOD FOR FILLING A GAS
CANISTER
Abstract
An adapter for a canister filling system includes a body having
an opening that is shaped to enable insertion of a valve of a gas
canister for holding a pressurized or liquefied gas, into an
interior space of the body, leaving a sealed gap between at least a
portion of a lateral aspect of the valve and an internal surface of
the body facing the interior space; and at least one channel that
is configured to conduct pressurized or liquified gas from a
canister filling system into the sealed gap in the interior space,
so as to reach one or more lateral exterior ports of the valve of
the gas canister that open laterally to a longitudinal axis of a
body of the gas canister, when the valve is inserted in the
interior space, to facilitate filling of the gas canister with the
pressurized or liquified gas through said one or more lateral
exterior ports of the gas canister.
Inventors: |
Danieli; Guy; (Jerusalem,
IL) ; Cohen; Avi; (Jerusalem, IL) ; Shalev;
Oren; (Ashdod, IL) ; Funt; Mark; (Kfar Saba,
IL) ; Ring; Allan; (Mercaz Shapira, IL) ;
Shkedi; Amnon; (Pardes Hanna-Karkur, IL) ; Brand;
Dvir; (Hod Hasharon, IL) ; Shmueli; Eyal;
(Modi'in-Maccabim-Reut, IL) ; Avigdor; Amit;
(Kibbutz Bahan, IL) ; Shaashua; Eran; (Adanim,
IL) ; Harduff; Hagai; (Binyamina, IL) ; Krom;
Doron; (Zikhron Yaacov, IL) ; Vaknin; Avraham;
(Zikhron Yaacov, IL) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Sodastream Industries Ltd. |
Kfar-Saba |
|
IL |
|
|
Assignee: |
Sodastream Industries Ltd.
Kfar-Saba
IL
|
Family ID: |
1000006316071 |
Appl. No.: |
17/403035 |
Filed: |
August 16, 2021 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
PCT/IL2020/051185 |
Nov 16, 2020 |
|
|
|
17403035 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F17C 2221/013 20130101;
F17C 2270/07 20130101; B01F 23/2361 20220101; F17C 2205/0323
20130101; F17C 13/04 20130101; F17C 6/00 20130101 |
International
Class: |
F17C 13/04 20060101
F17C013/04; F17C 6/00 20060101 F17C006/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 1, 2020 |
IL |
PCT/IL2020/050002 |
Claims
1. An adapter for a canister filling system comprising: a body
comprising: an opening that is shaped to enable insertion of a
valve of a gas canister for holding a pressurized or liquefied gas,
into an interior space of the body, leaving a sealed gap between at
least a portion of a lateral aspect of the valve and an internal
surface of the body facing the interior space; and at least one
channel that is configured to conduct pressurized or liquified gas
from a canister filling system into the sealed gap in the interior
space, so as to reach one or more lateral exterior ports of the
valve of the gas canister that open laterally to a longitudinal
axis of a body of the gas canister, when the valve is inserted in
the interior space, to facilitate filling of the gas canister with
the pressurized or liquified gas through said one or more lateral
exterior ports of the gas canister.
2. The adapter of claim 1, wherein the at least one channel
comprises at least one laterally oriented channel that is
configured to be in fluidic communication with said one or more
lateral exterior ports of the valve when the adapter is attached to
the filling system.
3. The adapter of claim 1, configured to connect to a filling head
of the filling system.
4. The adapter of claim 3, where the at least one channel comprises
a longitudinally oriented channel at a distal end that is
configured to be in fluidic communication with a filling port when
the distal end is connected to the filling head.
5. The adapter of claim 1, further comprising a gasket configured
to fluidically isolate an exterior surface of a plunger of the
valve when the valve is inserted in the interior space from said at
least a portion of the lateral aspect of the valve.
6. The adapter of claim 1, further comprising a pin actuator for
actuating a plunger of the valve, when the valve is inserted in the
interior space.
7. The adapter of claim 6, wherein the actuator pin is static.
8. The adapter of claim 7, wherein the static actuator pin extends
inwardly into the interior space.
9. The adapter of claim 6, wherein the actuator pin is dynamic.
10. The adapter of claim 9, wherein the actuator pin is positioned
and movable within a bore in the body.
11. The adapter of claim 10, wherein the bore extends form an
external surface of the body to an internal surface facing the
interior space.
12. A method for filling a gas canister with pressurized or
liquified gas from a canister filling system, the gas canister
having a valve with one or more lateral exterior ports located on
at least a portion of a lateral aspect of the valve, the method
comprising: inserting a valve of the gas canister into an interior
space of a body of an adapter, leaving a sealed gap between at
least a portion of a lateral aspect of the valve and an internal
surface of the body facing the interior space; conducting
pressurized or liquified gas from the canister filling system into
the sealed gap in the interior space, via at least one channel so
as to reach one or more lateral exterior ports of the valve of the
gas canister that open laterally to a longitudinal axis of a body
of the gas canister, when the valve is inserted in the interior
space; and filling of the gas canister with the pressurized or
liquified gas through said one or more lateral exterior ports of
the gas canister.
13. The method of claim 12, wherein the at least one channel
comprises at least one laterally oriented channel, the method
further comprises placing said at least one laterally oriented
channel in fluidic communication with said one or more lateral
exterior ports of the valve when the adapter is attached to the
filling system.
14. The method of claim 12, further comprising connecting the
adapter to a filling head of the filling system.
15. The method of claim 14, further comprising placing a
longitudinally oriented channel of the at least one channel in
fluidic communication with a filling port when the distal end is
connected to the filling head.
16. The method of claim 12, further comprising fluidically
isolating an exterior surface of a plunger of the valve when the
valve is inserted in the interior space from said at least a
portion of the lateral aspect of the valve using a gasket.
17. The method of claim 12, further comprising actuating a plunger
of the valve using an actuator pin, when the valve is inserted in
the interior space.
18. The method of claim 17, wherein the actuator pin is static.
19. The method of claim 17, wherein the actuator pin is dynamic.
Description
CROSS-REFERENCE
[0001] The present application is a U.S. Patent Continuation
Application of International Patent Application PCT/IL2020/051185,
filed Nov. 16, 2020, claiming priority from International Patent
Application PCT/IL2020/050002, filed Jan. 1, 2020, all of which are
hereby incorporated by reference.
FIELD OF THE INVENTION
[0002] The present invention relates to gas canisters, e.g., for
use in carbonation machines. More particularly, the present
invention relates to an adapter for a canister filling system and a
method for filling a gas canister.
BACKGROUND OF THE INVENTION
[0003] Carbonation machines are commonly used in homes, offices,
cafeterias, and other settings. A typical carbonation machine may
be operated to inject carbon dioxide into water or another liquid
that is in a bottle that may be attached to the machine. Other
types of carbonation machines may be configured to dispense
carbonated beverages into cups or other containers.
[0004] The carbon dioxide gas that is injected into liquid to
carbonate the liquid is typically provided in canisters of
compressed or liquefied gas. The carbonation machine includes a
user-operable mechanism for releasing gas from the cylinder and
conducting the gas to the liquid to be carbonated. Typically,
operation of the gas release mechanism causes the mechanism to open
a valve of the cylinder. When the gas canister is installed in the
carbonation machine, a valve head that includes the valve is
connected to a gas canister connector of the carbonation
machine.
[0005] When a cylinder has been emptied of gas, the empty cylinder
may be replaced with a full cylinder. This replacement is typically
performed by a user of the machine. For example, a valve head of
the cylinder may be provided with exterior male threading which may
be connected to the gas canister connector by screwing into
interior threading of a socket of the connector.
SUMMARY OF THE INVENTION
[0006] There is thus provided, in accordance with an embodiment of
the invention, an adapter for a canister filling system, The
adapter may include a body comprising: an opening that is shaped to
enable insertion of a valve of a gas canister for holding a
pressurized or liquefied gas, into an interior space of the body,
leaving a sealed gap between at least a portion of a lateral aspect
of the valve and an internal surface of the body facing the
interior space. The body may also include at least one channel that
is configured to conduct pressurized or liquified gas from a
canister filling system into the sealed gap in the interior space,
so as to reach one or more lateral exterior ports of the valve of
the gas canister that open laterally to a longitudinal axis of a
body of the gas canister, when the valve is inserted in the
interior space, to facilitate filling of the gas canister with the
pressurized or liquified gas through said one or more lateral
exterior ports of the gas canister.
[0007] According to some embodiments of the invention, the at least
one channel comprises at least one laterally oriented channel that
is configured to be in fluidic communication with said one or more
lateral exterior ports of the valve when the adapter is attached to
the filling head.
[0008] According to some embodiments of the invention, the adapter
may be configured to connect to a filling head of the filling
system.
[0009] According to some embodiments of the invention, the at least
one channel comprises a longitudinally oriented channel at a distal
end that is configured to be in fluidic communication with a
filling port when the distal end is connected to the filling
head.
[0010] According to some embodiments of the invention, the adapter
may further include a gasket configured to fluidically isolate an
exterior surface of a plunger of the valve when the valve is
inserted in the interior space from said at least a portion of the
lateral aspect of the valve.
[0011] According to some embodiments of the invention, the adapter
may further include a pin actuator for actuating a plunger of the
valve, when the valve is inserted in the interior space.
[0012] According to some embodiments of the invention, the actuator
pin is static.
[0013] According to some embodiments of the invention, the static
actuator pin extends inwardly into the interior space.
[0014] According to some embodiments of the invention, wherein the
actuator pin is dynamic.
[0015] According to some embodiments of the invention, the actuator
pin is positioned and movable within a bore in the body.
[0016] According to some embodiments of the invention, the bore
extends form an external surface of the body to an internal surface
facing the interior space.
[0017] According to some embodiments of the invention, there is
provided a method for filling a gas canister with pressurized or
liquified gas from a canister filling system, the gas canister
having a valve with one or more lateral exterior ports located on
at least a portion of a lateral aspect of the valve.
[0018] The method may include inserting a valve of the gas canister
into an interior space of a body of an adapter, leaving a sealed
gap between at least a portion of a lateral aspect of the valve and
an internal surface of the body facing the interior space.
[0019] The method may also include conducting pressurized or
liquified gas from the canister filling system into the sealed gap
in the interior space, via at least one channel so as to reach one
or more lateral exterior ports of the valve of the gas canister
that open laterally to a longitudinal axis of a body of the gas
canister, when the valve is inserted in the interior space.
[0020] The method may also include filling of the gas canister with
the pressurized or liquified gas through said one or more lateral
exterior ports of the gas canister.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order for the present invention to be better understood
and for its practical applications to be appreciated, the following
Figures are provided and referenced hereinafter. It should be noted
that the Figures are given as examples only and in no way limit the
scope of the invention. Like components are denoted by like
reference numerals.
[0022] FIG. 1 is a schematic sectional view of an example of a gas
canister valve.
[0023] FIG. 2 is a schematic exploded view of the gas canister
valve shown in FIG. 1.
[0024] FIG. 3A is a schematic sectional view of the gas canister
valve shown in FIG. 1, when the valve is closed.
[0025] FIG. 3B is a schematic sectional view of the gas canister
valve shown in FIG. 1, when the valve is open.
[0026] FIG. 4A is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior ports, the
connector including a pair of solid gaskets.
[0027] FIG. 4B schematically illustrates a gasket of the connector
shown in FIG. 4A.
[0028] FIG. 4C is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior ports, the
connector including a pair of gaskets with U-shaped cross
sections.
[0029] FIG. 4D schematically illustrates a gasket of the connector
shown in FIG. 4C.
[0030] FIG. 5A is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior openings, the
connector including an inwardly curved gasket.
[0031] FIG. 5B schematically illustrates a gasket of the connector
shown in FIG. 5A.
[0032] FIG. 5C is a schematic cross section of a connector to a gas
canister valve with laterally oriented interior openings, the
connector including an outwardly curved gasket.
[0033] FIG. 5D schematically illustrates a gasket of the connector
shown in FIG. 5C.
[0034] FIG. 6 schematically illustrates a gas canister and gas
canister valve with a circular projecting disk.
[0035] FIG. 7A shows a schematic cross section of a snap-in
canister holder for holding the gas canister shown in FIG. 6.
[0036] FIG. 7B schematically illustrates insertion of a canister
into the snap-in canister holder shown in FIG. 7A.
[0037] FIG. 7C schematically illustrates removal of a canister from
the snap-in canister holder shown in FIG. 7A.
[0038] FIG. 8A schematically illustrates a gas canister and gas
canister valve with a noncircular lateral projection.
[0039] FIG. 8B schematically illustrates insertion of the gas
canister shown in FIG. 8A into a canister holder of a carbonation
machine.
[0040] FIG. 8C schematically illustrates a gas canister locked in
the canister holder shown in FIG. 8B.
[0041] FIG. 9A schematically illustrates an example of a
carbonation machine with canister holder having a closable cover
configured to raise the canister into position when closed.
[0042] FIG. 9B schematically illustrates details of the lifting
mechanism of the canister holder shown in FIG. 9A.
[0043] FIG. 9C is a schematic sectional view of the canister holder
shown in FIG. 9B, with the cover closed.
[0044] FIG. 10A schematically illustrates a canister holder of a
carbonation machine with a tiltable canister cradle that is
configured to raise the canister into position when closed.
[0045] FIG. 10B is a schematic sectional view of the canister
holder shown in FIG. 10A, with the canister cradle fully
inserted.
[0046] FIG. 11A schematically illustrates a canister holder that
includes a base that is configured to raise a gas canister into
position when rotated, the canister holder shown in a configuration
that enables insertion or removal of a canister.
[0047] FIG. 11B schematically illustrates a canister holder shown
in FIG. 11A when in a configuration in which a canister is locked
into an operating position.
[0048] FIG. 12A schematically illustrates an example of a
carbonation machine with a canister holder having a handle that is
raised to enable placement of a gas canister.
[0049] FIG. 12B schematically illustrates placing a canister into
the canister holder shown in FIG. 12A.
[0050] FIG. 12C is a schematic sectional view of the canister
holder shown in FIG. 12B with the canister placed inside the
holder.
[0051] FIG. 12D schematically illustrates a lifting mechanism of
the canister holder shown in 12C.
[0052] FIG. 12E schematically illustrates an example of a base of
the carbonating machine shown in 12B that is configured to tilt the
canister valve into the yoke after insertion of the canister in the
base.
[0053] FIG. 13A schematically illustrates the carbonation machine
shown in FIG. 12A with the handle lowered to insert a gas canister
into the carbonation machine.
[0054] FIG. 13B schematically illustrates a canister inserted into
the carbonation machine shown in FIG. 13A.
[0055] FIG. 13C is a schematic sectional view of the canister
inserted in the carbonation machine in FIG. 13B.
[0056] FIG. 14A schematically illustrates a filling head adapter to
enable connection of a gas canister valve with laterally oriented
exterior ports to filling head of a canister filling system.
[0057] FIG. 14B schematically illustrates a view of the canister
valve adapter shown in FIG. 14A, showing a side of the adapter into
which the canister valve is insertable.
[0058] FIG. 14C is a schematic cross sectional view of the canister
valve adapter shown in FIG. 14A.
[0059] FIG. 15A schematically illustrates a canister valve adapter
for placement on canister valve with laterally oriented exterior
ports to enable connection of the canister valve to a filling head
of a canister filling system.
[0060] FIG. 15B is a schematic cross section of the canister valve
adapter shown in FIG. 15A.
[0061] FIG. 16A schematically illustrates another filling head
adapter to enable connection of a gas canister valve with laterally
oriented exterior ports to a filling head of a canister filling
system.
[0062] FIG. 16B schematically illustrates a view of the canister
valve adapter shown in FIG. 16A, showing a side of the adapter into
which the canister valve is insertable.
[0063] FIG. 16C is a top view of the canister valve adapter shown
in FIG. 16A.
[0064] FIG. 16D is a schematic cross-sectional view of the canister
valve adapter shown in FIG. 16A.
[0065] FIG. 16E is a schematic cross sectional view of the canister
valve adapter shown in FIG. 16A with the top of a gas canister
inserted for filling and held inside the adapter.
[0066] FIG. 17 is a schematic cross sectional view of the canister
valve adapter with a static pin actuator.
[0067] FIG. 18 is a schematic cross sectional view of the canister
valve adapter with a dynamic pin actuator.
DETAILED DESCRIPTION OF THE INVENTION
[0068] In the following detailed description, numerous specific
details are set forth in order to provide a thorough understanding
of the invention. However, it will be understood by those of
ordinary skill in the art that the invention may be practiced
without these specific details. In other instances, well-known
methods, procedures, components, modules, units and/or circuits
have not been described in detail so as not to obscure the
invention.
[0069] Although embodiments of the invention are not limited in
this regard, discussions utilizing terms such as, for example,
"processing." "computing." "calculating." "determining,"
"establishing". "analyzing", "checking", or the like, may refer to
operation(s) and/or process(es) of a computer, a computing
platform, a computing system, or other electronic computing device,
that manipulates and/or transforms data represented as physical
(e.g., electronic) quantities within the computer's registers
and/or memories into other data similarly represented as physical
quantities within the computer's registers and/or memories or other
information non-transitory storage medium (e.g., a memory) that may
store instructions to perform operations and/or processes. Although
embodiments of the invention are not limited in this regard, the
terms "plurality" and "a plurality" as used herein may include, for
example, "multiple" or "two or more". The terms "plurality" or "a
plurality" may be used throughout the specification to describe two
or more components, devices, elements, units, parameters, or the
like. Unless explicitly stated, the method embodiments described
herein are not constrained to a particular order or sequence.
Additionally, some of the described method embodiments or elements
thereof can occur or be performed simultaneously, at the same point
in time, or concurrently. Unless otherwise indicated, the
conjunction "or" as used herein is to be understood as inclusive
(any or all of the stated options).
[0070] In accordance with an embodiment of the present invention, a
canister holder of a carbonation machine, or of a canister filling
system for filling gas canisters for use with carbonation machines,
is configured to enable linear insertion of a valve of the gas
canister into a socket of the canister holder so as to enable flow
of gas (e.g., carbon dioxide) between the gas canister and a
machine or system that includes the canister holder. Similarly, the
holder is configured to enable linear removal of the valve from the
socket. As used herein, linear insertion refers to insertion and
connection to the socket that does not include multiple rotations
of the canister to screwing threading on the gas canister (e.g., on
the valve) into threading of the holder or socket.
[0071] For example, a carbonation machine may be operable to open a
valve of the gas canister to release the gas from the canister. The
carbonation machine includes an arrangement of one or more conduits
that are configured to cause the released gas to flow to a
carbonation head of the carbonation machine. A bottle or other
container of a liquid such as water may be attached to the
carbonation head such that the released gas enters, and may
carbonate, the liquid.
[0072] In this manner, insertion or replacement of a gas canister
may be facilitated. Facilitation of canister insertion or removal
may enable quick and simple replacement of a canister by unskilled
users, without risk of overtightening or otherwise risking damage
to a seal between the canister holder and the canister.
[0073] In one example, the canister holder may be configured to
enable manual (or mechanically assisted) snapping an end of the
canister, typically an end that includes a valve that is operable
to release gas (e.g., carbon dioxide) from the canister (or to
enable filling of the canister from a source of gas). For example,
slidable or retractable projections or teeth on the canister holder
may be configured to engage one or more corresponding projections
from the canister. In another example, insertion may include
insertion via an opening when the canister is oriented in one
orientation (e.g., with a noncircular projection on the canister
aligned with a correspondingly noncircular opening on the canister
holder) and afterward rotating the canister to another orientation
to hold the canister to the canister holder.
[0074] Alternatively or in addition, the canister holder, or a part
of a carbonation machine (or canister filling system) that is
associated with the canister holder, may include a canister
insertion mechanism that couples a canister insertion mechanism to
a mechanism for connecting a valve of the canister to the connector
of the canister holder.
[0075] For example, the canister insertion mechanism may include a
handle (e.g., in some cases functioning as a door or cover) that is
closed over the canister after placement of a projection from the
canister into a yoke. Closing the handle may lift the yoke and the
projection, thus inserting the valve into the connector. In another
example, the canister may be placed in a tiltable cradle when the
cradle is tilted outward. Tilting the cradle inward to an erect
orientation may lift the canister and insert the valve into the
connector. In another example, the canister may be placed (e.g.,
erect) on a base. Operating of a mechanism, e.g., rotation of the
base, may lift the canister so as to insert the valve into the
connector.
[0076] A gas canister valve that is configured for insertion into a
carbonation machine using an insertion motion (e.g., without
multiple rotations of the gas canister in order to screw the valve
into a canister holder of the carbonation machine) may be designed
to avoid generation of thrust that would tend to separate the
canister valve from a connector of the machine. Accordingly, the
valve may be designed, e.g., with ports for release of the gas
aimed laterally and substantially equally spaced about the
perimeter of the valve (e.g., two ports on substantially opposite
sides), to generate minimal (e.g., approximately zero) thrust in a
direction away from the connector.
[0077] When the valve is connected to a canister holder of a
carbonation machine, a mechanism of the carbonation machine may be
operated in order to release gas from the canister. The released
gas may flow to a carbonation head of the carbonation machine in
order to carbonate liquid contents of a bottle or other container
that is connected to the carbonation head, or that is otherwise
configured to enable injection of the gas into the liquid.
[0078] Similarly, the gas canister valve is configured to enable
connection of the valve to a canister holder of a filling head of a
canister filling system. When connected to the filling head, the
canister filling system may be operated to fill the canister with
pressurized or liquefied gas.
[0079] A proximal (e.g., to a connection of the gas canister valve
to the carbonation machine or filling system) end of a body of the
gas canister valve is configured to connect to the canister holder.
A longitudinal axis of the gas canister valve is considered to be
an axis that passes through the gas canister valve along a
direction of motion of an activation mechanism of the valve
(typically in the form of a slidable poppet that is configured to
slide along the longitudinal axis).
[0080] A distal end of the gas canister valve may be inserted into
and attached (e.g., by threading, welding, or otherwise) to the gas
canister. The distal end includes an interior canister port that is
insertable into, and open to, the canister.
[0081] The body of the gas canister valve also includes two or more
exterior ports that open laterally to the longitudinal axis (e.g.,
each oriented at an angle of at least 800, and typically of at
least 90.degree., from the direction of the connection to the
canister holder) of the valve, and are spaced at substantially
equal angular intervals about (e.g., two exterior ports
substantially on opposite sides of) the (longitudinal axis of) the
canister body. The exterior ports are configured to enable escape
of the gas from the canister when the valve is opened by a gas
release mechanism of the valve is activated (e.g., by causing
distal motion of a poppet within the valve). When the valve is
opened and the gas canister valve is connected to a canister holder
of a filling system, filling of the canister with pressurized or
liquefied gas via the exterior ports may be enabled.
[0082] The laterally equally spaced locations of the exterior ports
may direct any gas that escapes from the canister, whether by
intentional operation of the gas release mechanism or otherwise, in
equally spaced lateral directions. As a result, the lateral thrust
generated by release of the gas through one of the exterior ports
may be opposed by the thrust that is generated by release of the
gas via the other exterior ports.
[0083] The laterally equally spaced arrangement of the exterior
ports may be advantageous over a typical arrangement in which the
port releases the gas along the longitudinal direction. With a
longitudinally arranged port, the released gas may generate a
thrust that tends to push the canister away from its connection.
Accordingly, with such a longitudinally arranged port, a connection
that includes screwing the valve into a threaded socket may be
required. The thrust generated by release of gas via a lateral port
or ports will not generate a force that tends to separate the gas
canister from the canister holder because it is perpendicular to
the direction of insertion or removal of the gas canister for the
gas canister holder. Accordingly, a canister holder may include a
snap-in or other arrangement that does not include a threaded
socket. Therefore, connection and removal of a gas canister and
valve with a lateral port may be simpler than connection and
removal of a canister and valve with a longitudinally arranged
port.
[0084] Typically, the valve may be opened or closed by sliding a
poppet along a longitudinal axis of the valve. Typically, when the
poppet is slid distally away from the canister holder, the valve is
open, enabling fluid communication within the body of the valve
between the interior of the canister via the canister port and the
exterior ports. Conversely, when the poppet is slid proximally
toward the canister holder, the valve is closed such that fluid
communication between the exterior ports and the interior of the
canister is blocked. For example, a proximal end of the poppet may
be pressed against a sealing gasket to prevent fluid communication
between the canister port and the exterior ports. Opening the valve
enables inflow from a fluid source (e.g., of a canister filling
system) to the canister via the exterior ports or outflow of fluid
from the canister via the canister port and the exterior ports
(e.g., to a carbonation machine).
[0085] One or more types of sealing structure may be included in
the gas canister valve to prevent flow of gas around the plunger.
For example, a cross-section of a gasket that surrounds the plunger
may be U-shaped. The opening of the U-shape may be oriented toward
the interior of the canister. Thus, when the plunger is moved to
release gas from the canister, the pressurized gas may fill the
opening of the U-shaped gasket so as to push the walls of the
gasket outward, reinforcing the seal around the plunger and
preventing escape of the released gas around the plunger.
[0086] A plunger for causing the poppet of the valve to slide
distally is configured to be accessible to an activation mechanism,
e.g., of a carbonation machine or canister filling system.
Typically, the plunger includes an exterior surface that may be
contacted and operated by an actuation mechanism that is located in
a canister holder, e.g., of a carbonation machine of a canister
filling system. A proximal end of the plunger may include an
exterior surface forming a pushbutton. The proximal end of the
plunger may be located within an indentation at the proximal
surface of the gas canister valve. The indentation may prevent
accidental pressing of the plunger, e.g., by a surface that is
wider than the indentation.
[0087] When a pushing force is applied to the proximal end of the
plunger, the plunger may be moved distally, e.g., along an axis
that is collinear with the longitudinal axis of the poppet. A
distal end of the plunger may be configured to contact and press
against a proximal end of the poppet when the plunger is pushed
distally. Therefore, pushing the pushbutton at the proximal end of
the plunger may push the poppet distally to open the gas canister
valve. For example, an activation mechanism of a carbonation
machine or filling system may include an extendible rod or other
component that may press the pushbutton at the proximal end of the
gas canister valve. When the activation mechanism applies a force
that is at least as great as a predetermined force, the poppet may
be slid sufficiently distally in order to enable the fluidic
connection between the canister port and the exterior ports.
[0088] The plunger may be produced as a separate component from the
poppet. Alternatively, the plunger may be manufactured as an
integral part of the poppet, e.g., forming a proximal end of the
poppet.
[0089] Typically, the gas canister valve also includes a restoring
structure to maintain the poppet in the (e.g., proximal) closed
position when a sufficiently large force is not applied to the
exterior surface. For example, a spring may be configured to push
the poppet proximally unless the force of the spring is overcome by
a distal pushing force that is applied to the poppet, e.g., via the
plunger.
[0090] The gas canister valve may include structure to enable or
facilitate holding of the gas canister by a canister holder, e.g.,
of a carbonation machine or of a canister filling system. For
example, the gas canister valve may include one or more projections
that may be fitted into cooperating structure, e.g., one or more
grooves or slots, of the canister holder. When the gas canister is
held by the canister holder, the canister holder may be configured
to connect the exterior ports of the gas canister valve to one or
more conduits. e.g., that are associated with the canister
holder.
[0091] For example, a lateral projection in the form of a disk may
extend laterally outward, e.g., at or near a connection of the gas
canister valve to the gas canister. The disk may be configured for
insertion into a corresponding yoke of the canister holder. The
disk may be inserted as a washer between the gas canister valve and
the canister or may be manufactured as an integral part of the gas
canister valve or canister.
[0092] For example, the yoke may include U-shaped groove whose
width is sufficient to accommodate the thickness of the disk. When
no gas canister is held by the canister holder such that the yoke
is vacant, the disk of the gas canister may slide into the groove
of the yoke. When the disk is fully inserted into the yoke, a
closing mechanism of the canister holder may be operated to insert
the proximal end of the gas canister valve into a cooperating
connector associated with (e.g., integral to or adjacent to) the
canister holder. For example, the closing mechanism may include a
handle, lever, or other force-transmitting structure to lift the
proximal end of the gas canister valve into a sealed socket of a
carbonation machine or canister filling system. The operation of
the closing mechanism may include closing a handle (e.g.,
functioning as a cover, door, or shutter) e.g., that may at least
partially cover the gas cylinder when it is connected to the
connector.
[0093] Alternatively or in addition, the yoke may include two or
more teeth or arms that are extendible to grasp the disk when the
gas canister valve is inserted into the connector.
[0094] Alternatively or in addition, a disk may be asymmetric. The
asymmetry may enable insertion of the asymmetric disk through a
matching asymmetric opening in a yoke when the asymmetric disk is
aligned with the asymmetric opening. Rotation of the asymmetric
disk (e.g., by 90.degree.) to an orientation where the asymmetric
disk is no longer aligned with the asymmetric opening may retain
the asymmetric disk in the yoke. In this case, the closing
mechanism may be configured to, in addition to insertion of the
proximal end of the gas canister valve into a sealed connector,
rotate the gas cylinder (e.g., by 90.degree.) to retain the
asymmetric disk in the yoke of the canister holder.
[0095] A connector for enabling flow of gas between the gas
canister valve to a carbonation machine, canister-filling system,
or other device may include a socket that includes sealing
structure. The sealing structure may be configured to enable a
fluid connection between the exterior ports of the gas canister
valve and a gas conduit of the connector, while preventing leakage
of gas in other directions. For example, the sealing structure may
include two or more gaskets between which gas may be flow between a
conduit of the connector and the exterior ports of the gas canister
valve. Alternatively or in addition, a gasket of the sealing
structure may include one or more openings through which gas may
flow. The gasket may have a U-shape that may expand when filled
with pressurized gas to further enhance the sealing.
[0096] In some cases, a filling head adapter may be attached to a
filling head of a canister filling system in order to enable
filling of gas canister that is provided with a gas canister valve
with laterally oriented exterior ports. For example, the filling
head adapter may provide a fluidic path between a filling port of
the canister filling system that is coaxial with the longitudinal
axis of the gas canister and the laterally positioned exterior
ports of the gas canister valve. The fluidic path may include one
or more grooves, channels, tubes, or other structure to enable
fluidic flow of pressurized gas (or liquefied gas) from the filling
port of the canister filling system to the exterior ports of the
gas canister valve. For example, the filling head adapter may be
bolted or otherwise attached to the filling head.
[0097] In some cases, a canister valve adapter may be attachable to
a gas canister valve with laterally oriented exterior ports.
Fitting a canister valve adapter onto the gas canister valve may
enable filling of the gas canister by insertion of the canister
valve adapter into a filling head of the canister filling system
with an axial (longitudinal) filling port. The canister valve
adapter is configured to provide a fluidic path between a filling
port of the canister filling system that is coaxial with the
longitudinal axis of the gas canister and the laterally positioned
exterior ports of the gas canister valve. Typically, the fluidic
path that is provided by the canister valve adapter includes a
system of closed tubes or channels between the filling port and the
exterior ports of the gas canister valve.
[0098] FIG. 1 is a schematic sectional view of an example of a gas
canister valve. FIG. 2 is a schematic exploded view of the gas
canister valve shown in FIG. 1. FIG. 3A is a schematic sectional
view of the gas canister valve shown in FIG. 1, when the valve is
closed.
[0099] Internal components of gas canister valve 10 are enclosed
within valve body 12. Typically, valve body 12 is made of brass or
another metal. An end of valve body 12 that includes canister port
14 is configured to be inserted into a gas canister 46. An
interface between valve body 12 may be sealed by gasket 34. Gas may
flow from interior cavity 48 of gas canister 46 into central
channel 15 via canister port 14 and gas filter 36.
[0100] In order to enable controlled release of gas from gas
canister 46 in the event of overpressure, gas canister 46 is
provided with burst disk 40. Burst disk 40 is held in place between
burst disk plug 38 and valve body 12. In the event of overpressure
that is sufficient to rupture burst disk 40, gas within central
channel 15 may, after rupturing burst disk 40, flow outward through
burst disk plug 38 and escape to the ambient atmosphere via gas
escape opening 39 in burst disk plug 38.
[0101] In some cases, disk 44 may be held between valve body 12 and
gas canister 46. Disk 44 may be configured to fit into a
corresponding slot or groove of a canister holder. Alternatively or
in addition to disk 44, one or more projections that are integral
to valve body 12 may extend laterally out of valve body 12 to
engage cooperating structure of the canister holder. Alternatively
or in addition, valve body 12 may include one or more indentations
that are configured to engage one or more cooperating projections
of the canister holder.
[0102] When gas canister valve 10 is inserted into gas canister 46
and gas canister valve 10 is opened, gas from gas canister 46 may
be released via a pair of oppositely oriented exterior ports 16. In
this way, the net thrust generated by release of gas via the pair
of exterior ports 16 may be close to zero.
[0103] In some examples, a gas canister valve may include more than
two oppositely oriented exterior ports 16. For example, the
additional pairs of exterior ports 16 may be oriented to evenly
distribute exterior ports 16 about the perimeter of valve body
12.
[0104] When gas canister valve 10 is closed, as shown, valve poppet
18 is pressed by spring 20 against valve seat 24 of (e.g., in the
form of a circular ridge that extends from the surface of) insert
22. Therefore, all fluidic connection between interior cavity 48 of
gas canister 46 and exterior ports 16 is blocked.
[0105] Gas canister valve 10 may be opened by application of a
pushing force to exterior surface 26a of plunger 26. Exterior
surface 26a is exposed to, and is mechanically accessible to (e.g.,
may be pushed by), an actuator, e.g., of a carbonation machine or
of a canister filling system, to which gas canister valve 10 is
connected. Typically, the pushing force may be applied by an
activating rod that is located within, or is otherwise associated
with, the canister holder. Exterior surface 26a may be located
within an indentation 27 at an exterior end of valve body 12.
Location of exterior surface 26a within an indentation 27 may
prevent accidental or unintentional application of a pushing force
to plunger 26.
[0106] Applying a pushing force to exterior surface 26a pushes
plunger 26 toward valve poppet 18. When the pushing force that is
applied to exterior surface 26a is sufficient to overcome the
opposing force that is exerted by spring 20 and by pressure of the
gas within gas canister 46, end 26b of plunger 26 may push valve
poppet 18 away from valve seat 24.
[0107] When valve poppet 18 is no longer pressed against valve seat
24, gas may begin to flow between valve poppet 18 and insert 22.
For example, during carbonation, interior cavity 48 of gas canister
46 is assumed to be filled with pressurized or liquefied gas. When
flow is enabled between valve poppet 18 and insert 22, gas may flow
outward via grooves 23 of insert 22 around seal housing 30 to
exterior ports 16. The gas that is released via exterior ports 16
may then be directed by a connector to a carbonation head where the
gas is injected into a liquid to be carbonated. On the other hand,
when exterior ports 16 are connected to a filling system,
pressurized or liquefied gas may be injected into exterior ports
16, to flow inward around seal housing 30, via grooves 23 of insert
22, and between insert 22 and valve poppet 18 via central channel
15 to interior cavity 48 of gas canister 46.
[0108] Gas may be prevented from escaping from gas canister valve
10 around plunger 26 (e.g., as in a typical prior art canister
where the exterior port is along the longitudinal axis of gas
canister valve 10) by sealing gasket 28. In the example shown,
sealing gasket 28 has an approximately U-shaped cross section, with
the opening facing toward insert 22 and gas canister 46. Sealing
gasket 28 is held in place by seal housing 30 and insert retainer
32. Thus, pressure of gas from the direction of gas canister 46 may
tend to widen the opening of sealing gasket 28, thus enhancing the
seal preventing the escape of gas around plunger 26. Alternatively
or in addition, sealing gaskets having other types of cross
sections (e.g., V-shaped. W-shaped, or another shape that enables
the gas pressure to enhance the seal, or other shapes), or that are
held in place by other mechanisms, may be used.
[0109] FIG. 3B is a schematic sectional view of the gas canister
valve shown in FIG. 1, when the valve is open.
[0110] In the example shown, valve poppet 18 has been pushed into
gas canister valve 10 and has been separated from valve seating 24
to form gap 50 between valve poppet 18 and insert 22. Accordingly,
gas may flow through gap 50 between central channel 15 and exterior
ports 16. Gas is prevented from flowing around plunger 26, e.g.,
between plunger 26 and seal housing 30, by sealing gasket 28.
Therefore, gas is constrained to flow between central channel 15
and exterior ports 16, in either direction, via a path that
includes grooves 23 and a space between seal housing 30 and valve
housing 12.
[0111] Gas canister valve 10 may be configured for insertion into
one or more types of connectors that do not include threading for
holding gas canister valve 10 and gas canister 46 to a canister
holder. In addition, a connector for connecting to gas canister
valve 10 may be configured to conduct gas to or from laterally
oriented exterior ports 16. Accordingly, the connector may be
configured to enable lateral flow of gas between exterior ports 16
and a gas conduit (e.g., to the carbonation head of a carbonation
machine, or from a gas source of a canister filling system), while
preventing the escape of gas in other directions.
[0112] The connector may be configured to exert a sufficiently low
friction force on gas canister valve 10 to enable insertion of gas
canister valve 10 into the connector, and removal of gas canister
valve 10 from the connector. On the other hand, the connector is
configured, when gas canister valve 10 is inserted into the
connector, to enable gas flow between a conduit (e.g., of a
carbonation machine or canister filling system) and exterior ports
16.
[0113] FIG. 4A is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior ports, the
connector including a pair of solid gaskets. FIG. 4B schematically
illustrates a gasket of the connector shown in FIG. 4A.
[0114] Canister connector 52 is configured to enable insertion of
gas canister valve 10. Canister connector 52 is further configured
to enable a fluid connection between exterior ports 16 of gas
canister valve 10 and gas conduit 54 of canister connector 52. For
example, in a canister connector 52 of a carbonation machine, gas
conduit 54 may connect canister connector 52 to a carbonation head
of the carbonation machine. In a canister connector 52 of a
canister filling system, gas conduit 54 may connect canister
connector 52 to a gas source of the canister filling system.
Although a single gas conduit 54 is shown, other examples of a
canister connector may include two or more gas conduits 54.
[0115] Canister connector 52 includes a socket 51 that includes
sealing structure in the form of a pair of solid gaskets 56 with a
gap 58 between the two solid gaskets 56. In the example shown, each
solid gasket 56 is in the form of an O-ring with flattened annular
faces 56a that border gap 58. In other examples, each gasket may be
hollow, or include a full or partial annular bore, or may have an
exterior shape that is rectangular or that otherwise differs from
that of the example shown.
[0116] In the example shown, gas may flow between exterior ports 16
of gas canister valve 10 and gas conduit 54 of canister connector
52 via gap 58 between solid gaskets 56.
[0117] FIG. 4C is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior ports, the
connector including a pair of gaskets with U-shaped cross sections.
FIG. 4D schematically illustrates a gasket of the connector shown
in FIG. 4C.
[0118] Canister connector 53 is configured to enable insertion of
gas canister valve 10 and to enable a fluid connection between
exterior ports 16 of gas canister valve 10 and gas conduit 54 of
canister connector 53.
[0119] Canister connector 53 includes a socket 51 that includes
sealing structure in the form of a pair of U-shaped gaskets 60.
Each U-shaped gasket 60 has a U-shaped cross section that surrounds
an opening 60a. In the example shown, one of U-shaped gaskets 60 is
inverted relative to the other such that openings 60a of U-shaped
gaskets 60 are oriented to face one another. U-shaped gaskets 60
are separated by gap 58.
[0120] In the example shown, gas may flow between exterior ports 16
of gas canister valve 10 and gas conduit 54 via gap 58 between
U-shaped gaskets 60. The gas may fill openings 60a. Therefore, the
pressure of the gas may tend to expand U-shaped gaskets 60 and open
openings 60a, thus pressing U-shaped gaskets 60 against surrounding
structure to further prevent leakage of the gas.
[0121] FIG. 5A is a schematic cross section of a connector to a gas
canister valve with laterally oriented exterior openings, the
connector including an inwardly curved gasket. FIG. 5B
schematically illustrates a gasket of the connector shown in FIG.
5A.
[0122] Canister connector 61 is configured to enable insertion of
gas canister valve 10 and to enable a fluid connection between
exterior ports 16 of gas canister valve 10 and gas conduit 54 of
canister connector 61.
[0123] Canister connector 61 includes a socket 51 that includes
sealing structure in the form of a single U-shaped (or C-shaped)
gasket 62. U-shaped gasket 62 has a U-shaped cross section that
surrounds an opening 62a. Opening 62a of U-shaped gasket 62 opens
inward, toward the axis of symmetry of U-shaped gasket 62. The
outward facing convex surface of U-shaped gasket 62 is perforated
by exterior opening holes 64. In the example shown. U-shaped gasket
62 includes four evenly spaced exterior opening holes 64. In other
examples, a U-shaped gasket 62 may include less than or more than
four exterior opening holes 64.
[0124] In the example shown, gas may flow between exterior ports 16
of gas canister valve 10 and gas conduit 54 of canister connector
61 via exterior opening holes 64 in U-shaped gasket 62. The gas may
fill opening 62a. Therefore, the pressure of the gas may tend to
expand U-shaped gasket 62 to further open opening 62a, pressing
U-shaped gasket 62 against surrounding structure to further prevent
leakage of the gas.
[0125] FIG. 5C is a schematic cross section of a connector to a gas
canister valve with laterally oriented interior openings, the
connector including an outwardly curved gasket. FIG. 5D
schematically illustrates a gasket of the connector shown in FIG.
5C.
[0126] Canister connector 65 is configured to enable insertion of
gas canister valve 10 and to enable a fluid connection between
exterior ports 16 of gas canister valve 10 and gas conduit 54 of
canister connector 65.
[0127] Canister connector 65 includes a socket 51 that includes
scaling structure in the form of a single U-shaped (or C-shaped)
gasket 66. U-shaped gasket 66 has a U-shaped cross section that
surrounds an opening 66a. Opening 66a of U-shaped gasket 66 opens
outward, away from the axis of symmetry of U-shaped gasket 66. The
inward facing convex surface of U-shaped gasket 66 is perforated by
interior opening holes 68. In the example shown, U-shaped gasket 66
includes four evenly spaced interior opening holes 68. In other
examples, a U-shaped gasket 66 may include less than or more than
four interior opening holes 68.
[0128] In the example shown, gas may flow between exterior ports 16
of gas canister valve 10 and gas conduit 54 of canister connector
65 via interior opening holes 68 in U-shaped gasket 66. The gas may
fill opening 66a. Therefore, the pressure of the gas may tend to
expand U-shaped gasket 66 to further open opening 66a, pressing
U-shaped gasket 66 against surrounding structure to further prevent
leakage of the gas.
[0129] A canister holder may be provided with structure to hold an
inserted gas canister 46. In particular, the structure may be
configured to engage structure that projects outward from gas
canister 46, gas canister valve 10, or both. The outwardly
projecting structure may include a circular or otherwise shaped
disk 44. In some cases, disk 44 may be constructed in the form of a
washer that is held between gas canister valve 10 and gas canister
46 when gas canister valve 10 is attached to, typically screwed
into, gas canister 46.
[0130] FIG. 6 schematically illustrates a gas canister and gas
canister valve with a circular projecting disk.
[0131] In the example shown, disk 44 is circular and held between
gas canister 46 and gas canister valve 10.
[0132] FIG. 7A shows a schematic cross section of a snap-in
canister holder for holding the gas canister shown in FIG. 6.
[0133] In the example shown, canister holder 70 is configured to
enable insertion of a gas canister by pressing an exterior end of
gas canister valve 10 (an end distal to gas canister 46) upward
toward and into canister connector 76. Although in FIG. 7 canister
connector 76 is shown having a form similar to canister connector
61 (with a U-shaped gasket 62), canister connector 76 may have a
form similar to any of the canister connectors described above, or
another type of canister connector.
[0134] Canister holder 70 includes at least two slidable teeth 71.
A resilient spring or other element (not shown) is configured to
push each slidable tooth 71 inward, toward one another. Each
slidable tooth 71 has a sloped surface 71a that faces outward from
canister holder 70. Therefore, when a gas canister 46 with a disk
44 is pushed into (upward in FIG. 7) canister holder 70, disk 44
may push against sloped surface 71a and cause each slidable tooth
71 to slide outward. The outward sliding of slidable teeth 71 may
enable insertion of gas canister valve 10 into canister connector
76. Once disk 44 has been inserted past slidable teeth 71, the
resilient element may push slidable teeth 71 inward. The inward
position of slidable teeth 71 may prevent outward movement of disk
44, thus holding gas canister 46 to canister holder 70. The
position of slidable teeth 71 may be selected such that, when
slidable teeth 71 slide inward after passage of disk 44, gas
canister valve 10 may be fully inserted into canister connector 76.
A circular shape of disk 44 may enable insertion of gas canister 46
without having to hold gas canister 46 in a particular orientation
(about its longitudinal axis).
[0135] FIG. 7B schematically illustrates insertion of a canister
into the snap-in canister holder shown in FIG. 7A.
[0136] In the example shown, gas canister valve 10 of gas canister
46 may be inserted into canister connector 76 by moving gas
canister valve 10 toward canister connector 76 with upward motion
67a. As gas canister valve 10 is inserted into canister connector
76, slidable teeth 71 may be pushed outward by disk 44. When gas
canister valve 10 is fully inserted into canister connector 76,
slidable teeth 71 may snap inward below disk 44 to secure disk 44,
and thus gas canister 46, within canister holder 70.
[0137] In the example shown, canister holder base 73 (e.g., of a
carbonation machine or of a canister filling system) includes an
opening 75. Thus, gas canister 46 may be inserted so that the
longitudinal axis of gas canister 46 and of gas canister valve 10
is aligned with upward motion 67a, with a lower end of gas canister
46 extending downward through opening 75. Accordingly, gas canister
46 need only be translated parallel to upward motion 67a (e.g.,
without rotation of gas canister 46) in order to insert gas
canister valve 10 into canister connector 76.
[0138] FIG. 7C schematically illustrates removal of a canister from
the snap-in canister holder shown in FIG. 7A.
[0139] In the example shown, disk 44 is secured to canister holder
70 by slidable teeth 71. In order to enable removal of gas canister
46 from canister holder 70, release mechanism 69 may be operated to
cause outward retraction of slidable teeth 71 to enable downward
movement of disk 44 past slidable teeth 71. For example, release
mechanism 69 may include a pushbutton, lever, or other user
operable component that, when operated, causes slidable teeth 71 to
be retracted outward. When slidable teeth 71 are retracted, gas
canister 46 may be removed from canister holder 70 by moving gas
canister valve 10 away from canister connector 76 with downward
motion 67b.
[0140] Canister holder 70 may include a retraction mechanism that
is operable by a user, e.g., by pressing a button or lever, to
retract slidable teeth 71 to enable removal of gas canister 46 from
canister holder 70.
[0141] Alternatively or in addition, a mechanism for holding a gas
canister 46 in a canister holder may be configured to cooperate
with a noncircular asymmetric disk that is elongated along one
axis.
[0142] FIG. 8A schematically illustrates a gas canister and gas
canister valve with a noncircular lateral projection.
[0143] In the example shown, noncircular lateral projection 72 is
held between gas canister 46 and gas canister valve 10. In the
example shown, noncircular lateral projection 72 has the form of
doubly truncated circle. In other examples, a noncircular lateral
projection may have another noncircular shape.
[0144] FIG. 8B schematically illustrates insertion of the gas
canister shown in FIG. 8A into a canister holder of a carbonation
machine.
[0145] In the example shown, noncircular lateral projection 72 is
in the form of a doubly truncated circle. In other examples,
noncircular lateral projection 72 may have any form that is not
circularly symmetric. For example, noncircular lateral projection
72 may have a polygonal, oval, or other noncircular shape.
[0146] In the example shown, carbonation machine 63 includes a
carbonation head 81 and canister holder 74. Canister holder 74
includes a yoke 78 with an elongated opening 77. When the long
dimension of noncircular lateral projection 72 on gas canister 46
is aligned with elongated opening 77 of yoke 78, gas canister 46
may be moved with linear motion 79a until gas canister valve 10 is
inserted into canister connector 76.
[0147] When gas canister valve 10 has been inserted into canister
connector 76, gas canister 46 may be rotated about its axis with
rotation motion 79b (or with an opposite rotation). Rotation of gas
canister 46 may rotate noncircular lateral projection 72 by a
sufficient angle such that noncircular lateral projection 72 is no
longer aligned with elongated opening 77. When so rotated, yoke 78
may prevent outward motion (e.g., in the direction opposite to
linear motion 79a) of noncircular lateral projection 72. Thus, gas
canister 46 and gas canister valve 10 may be locked within canister
holder 74 and canister connector 76.
[0148] In other examples, e.g., where a noncircular lateral
projection has another shape, an opening of the yoke may be shaped
to match the shape of the noncircular lateral projection. Thus,
when the noncircular lateral projection is aligned with the
opening, the noncircular lateral projection may be inserted into
the opening. After insertion, gas canister 46 and the noncircular
lateral projection may be rotated such that the opening and the
noncircular lateral projection are no longer aligned. Therefore,
after such rotation, the noncircular lateral projection and the
attached gas canister 46 cannot be removed from the yoke.
[0149] FIG. 8C schematically illustrates a gas canister locked in
the canister holder shown in FIG. 8B.
[0150] As shown in FIG. 8C, noncircular lateral projection 72 has
been rotated with rotation motion 79b (or its opposite) by
approximately 90.degree. such that the long dimension of
noncircular lateral projection 72 is approximately perpendicular to
that of elongated opening 77. Thereby, gas canister 46 is locked
within canister holder 74. In order to enable removal of gas
canister 46 from canister holder 74, gas canister 46 may be rotated
until the long dimension of noncircular lateral projection 72 is
aligned with that of elongated opening 77. When so aligned, gas
canister 46 may be removed from canister holder 74 by pulling gas
canister 46 in a direction opposite to that of linear motion
79a.
[0151] In some examples, a canister holder may be configured to
lift gas canister 46 when gas canister 46 is closed into the
canister holder. The closing mechanism may include, for example, a
handle (e.g., functioning as a door or other cover) that, in some
examples, may at least partially cover a cavity into which gas
canister 46 is insertable, a tiltable cradle into which gas
canister 46 is insertable, or a base on which gas canister 46 may
stand.
[0152] FIG. 9A schematically illustrates a carbonation machine with
a canister holder having a closable cover configured to raise the
canister into position when closed. FIG. 9B schematically
illustrates details of the lifting mechanism of the canister holder
shown in FIG. 9A.
[0153] When gas canister 46 with disk 44 (which may be circular, or
may have a rectangular or other polygonal shape, an oval shape, or
another shape) is inserted into canister holder 90 of carbonation
machine 63, disk 44 may fit above, and may be held by, yoke 94.
Canister cover 92 is connected to yoke 94 by hinged lever mechanism
96 (or by another mechanism, e.g., that includes one or more
hinges, levers, gears, pulleys, or other mechanical components,
that links motion of yoke 94 to that of canister cover 92). Thus,
when canister cover 92 is rotated downward and inward (e.g., toward
gas canister 46) to cover gas canister 46, yoke 94 is lifted toward
canister connector 76. When canister cover 92 is fully closed, gas
canister valve 10 may be fully inserted into canister connector 76.
When fully inserted, a user operating gas release control 97 (e.g.,
a pushbutton as in the example shown, or another user-operable
control) to cause an activation mechanism to operate gas canister
valve 10 to release gas from gas canister 46.
[0154] FIG. 9C is a schematic sectional view of the canister holder
shown in FIG. 9B, with the cover closed.
[0155] With canister cover 92 fully closed, gas canister valve 10
is fully inserted into canister connector 76. In the example shown,
activation rod 98 is positioned adjacent to plunger 26 of gas
canister valve 10. In the example shown, when gas release control
97 is pressed, an activation mechanism pushes activation rod 98
against plunger 26. Continued pushing on activation rod 98 and
plunger 26 may open gas canister valve 10 to release gas from gas
canister 46 via exterior ports into gas conduit of canister
connector 76.
[0156] FIG. 10A schematically illustrates a canister holder of a
carbonation machine with a tiltable canister cradle that is
configured to raise the canister into position when closed.
[0157] A gas canister 46 with disk 44 (which may be circular, or
may have a rectangular or other polygonal shape, an oval shape, or
another shape) may inserted into, or removed from, canister cradle
102 of canister holder 100 of carbonation machine 63 when canister
cradle 102 is tilted outward, as shown. Disk 44 of an inserted gas
canister 46 may fit over yoke 94. It may be noted that, in the
example shown, the function of disk 44 and yoke 94 may be to guide
gas canister 46 to a correct position on canister cradle 102. In
other examples, canister cradle 102, gas canister 46, or both may
have other structure for guiding placement of gas canister 46 in
canister cradle 102.
[0158] Canister cradle 102 is connected to stationary structure of
canister holder 100 by hinged lever mechanism 104 (or by another
mechanism, e.g., that includes one or more hinges, levers, gears,
pulleys, or other mechanical components). Therefore, when a gas
canister 46 is inserted into canister cradle 102 and canister
cradle 102 is rotated inward (so as to tilt gas canister 46 upward
until it is erect), canister cradle 102 and gas canister 46 are
lifted toward canister connector 76.
[0159] FIG. 10B is a schematic sectional view of the canister
holder shown in FIG. 10A, with the canister cradle fully
inserted.
[0160] As shown, canister cradle 102 and gas canister 46 have been
tilted inward and are erect. Gas canister valve 10 is fully
inserted into canister connector 76 to enable operation of gas
canister valve 10 by operation of gas release control 97,
activation mechanism 99, and activation rod 98.
[0161] FIG. 11A schematically illustrates a canister holder that
includes a base that is configured to raise a gas canister into
position when rotated, the canister holder shown in a configuration
that enables insertion or removal of a canister.
[0162] Base 118 of canister holder 110 (e.g., of a carbonation
machine or of a canister filling system) includes canister support
platform 112. When in the configuration shown, canister support
platform 112 is sufficiently low such that a gas canister 46 with
its gas canister valve 10 may fit between canister support platform
112 and canister connector 76. In this configuration, gas canister
46 may be inserted into canister holder 110 or removed from
canister holder 110.
[0163] Canister support platform 112 may be rotated in order to
lift gas canister 46 such that gas canister valve 10 is inserted
into canister connector 76. In the example shown, canister support
platform 112 may be rotated such that tab 114 on canister support
platform 112 climbs incline 116 on base 118. Therefore, rotating
canister support platform 112 such that tab 114 is rotated toward
the uppermost part of incline 116 may lift gas canister 46 and gas
canister valve 10 such that gas canister valve 10 is inserted into
canister connector 76.
[0164] FIG. 11B schematically illustrates a canister holder shown
in FIG. 11A when in a configuration in which a canister is locked
into an operating position.
[0165] When, as in the example shown, gas canister valve 10 is
inserted into canister connector 76, the space between canister
support platform 112 and canister holder 110 has been decreased
such that gas canister 46 cannot be removed from canister holder
110. Rotation of gas canister 46 such that tab 114 is rotated back
toward the lowermost part of incline 116 may lower canister support
platform 112 such that the space between canister support platform
112 and canister connector 76 is sufficiently large to enable
removal of gas canister 46 and gas canister valve 10 from canister
connector 76. In some cases, base 118 may include structure to
prevent accidental or unintentional lowering of canister support
platform 112. For example, base 118 may include a latch or other
structure that is configured to hold tab 114 at the uppermost part
of incline 116 until a release (e.g., an unlatching) mechanism is
operated.
[0166] Canister holder 110 may include one or more other structures
to secure an inserted gas canister 46. For example, when gas
canister 46 includes a disk 44, canister holder 110 may include
slidable teeth 71 or other structure to hold disk 44 in place. When
gas canister 46 includes a noncircular lateral projection 72,
canister holder 110 may include a yoke 78 with an elongated opening
77. A canister holder 110 may include other types of securing
structure.
[0167] FIG. 12A schematically illustrates an example of a
carbonation machine with a canister holder having a handle that is
raised to enable insertion of a gas canister.
[0168] Handle 122 of carbonation machine 120 may be raised or
lowered by rotation about axis 127. In carbonation machine 120,
yoke 94 is coupled to handle 122 by a lifting mechanism (visible in
FIG. 12D). When handle 122 is raised, as in the example shown, yoke
94 is lowered away from canister connector 76. The space between
yoke 94 and canister connector 76 is sufficient to enable placement
of a gas canister valve 10 between yoke 94 and canister connector
76.
[0169] FIG. 12B schematically illustrates placing a canister into
the canister holder shown in FIG. 12A.
[0170] As shown, opening 124 in base 128 of carbonation machine 120
enables placement of a bottom end of gas canister 46 (e.g., an end
of gas canister 46 that is opposite the end to which gas canister
valve 10 is attached) into opening 124. Rotation of gas canister
valve 10 toward yoke 94 (as indicated by arrow 123) may place disk
44 (or other lateral projection from gas canister 46) above yoke
94.
[0171] Opening 124 may be configured to align a gas canister 46
that is placed into opening 124 with canister connector 76. For
example, the alignment may include orienting an axis of gas
canister 46 to be parallel with an axis of canister connector 76,
and laterally aligning the axes such that gas canister 46 is
coaxial with canister connector 76.
[0172] FIG. 12C is a schematic sectional view of the canister
holder shown in FIG. 12B with the canister placed inside.
[0173] In the example shown, a partially raised floor region 124a
of opening 124 is designed to present an uneven floor surface 129
so as to cause gas canister 46 to independently tilt towards the
yoke, and lean on the internal radius of the yoke, thereby aligning
with the socket of the canister connector 76.
[0174] Raised floor region 124a covers part of (e.g., an arced
segment of) the space of opening 124. The remainder of opening 124
may include a lower region 124b. In the example shown, opening 124
has no floor in lower region 124b. In other examples, raised floor
region 124a may be raised above a floor of lower region 124b.
[0175] The area of raised floor region 124a is shaped and sized
such that the center of gravity of gas canister 46 (typically along
or near canister cylinder axis 131) is over lower region 124b. As a
result, when gas canister 46 is placed in opening 124, gravity may
rotate gas canister 46 to lean against the internal radius of the
yoke and align with (e.g., a socket of) canister connector 76.
[0176] It may be noted that, although an opening 124 with raised
floor region 124a is shown and described in connection with
carbonation machine 120, a raised floor region 124a may be
incorporated into other examples (e.g., the examples shown in FIGS.
8, 9, and 11).
[0177] FIG. 12D schematically illustrates a lifting mechanism of
the canister holder shown in 12C. FIG. 12E schematically
illustrates an example of a base of the carbonating machine shown
in 12B that is configured to tilt the cylinder valve into the yoke
after insertion of the cylinder in the base.
[0178] As shown, disk 44 of gas canister 46 is resting on yoke 94.
Pin 125 is attached to handle 122 and is inserted into slot 121 on
yoke 94. Lowering of handle 122 by rotation about axis 127 rotates
pin 125 outward from carbonation machine 120. Slot 121 is curved
(as in the example shown) or slanted or is otherwise non-horizontal
and non-vertical such that an outer end of slot 121 is lower than
an inner end of slot 121. Accordingly, the outward rotation of pin
125 due to lowering of handle 122 exerts an upward force on slot
121 and yoke 94. Therefore, lowering of handle 122 may raise yoke
94, and a gas canister 46 that is placed on yoke 94, toward
canister connector 76.
[0179] FIG. 13A schematically illustrates the carbonation machine
shown in FIG. 12A with the handle lowered to insert a gas canister
into the carbonation machine.
[0180] As shown, handle 122 has been fully lowered. Therefore, yoke
94 is fully raised toward canister connector 76.
[0181] FIG. 13B schematically illustrates a canister inserted into
the carbonation machine shown in FIG. 13A. FIG. 13C is a schematic
sectional view of the canister inserted in the carbonation machine
in FIG. 13B.
[0182] As shown, handle 122 has been lowered over gas canister 46.
In some cases, when handle 122 is fully lowered, handle 122 may
provide further shielding or protection to the connection between
gas canister valve 10 and canister connector 76.
[0183] As a result of the lowering of handle 122, hinged lever
mechanism 96 lifts gas canister valve 10 into canister connector
76. Therefore, operation of gas release control 97 and activation
mechanism 99 may operate gas canister valve 10 to release gas from
gas canister 46 to flow to a carbonation head of carbonation
machine 120.
[0184] After insertion of gas canister 46 into carbonation machine
120, canister cover 126 may be inserted into base 128 and
closed.
[0185] FIG. 14A schematically illustrates a filling head adapter to
enable connection of a gas canister valve with laterally oriented
exterior ports to filling head of a canister filling system. FIG.
14B schematically illustrates a view of the canister valve adapter
shown in FIG. 14A, showing a side of the adapter into which the
canister valve is insertable. FIG. 14C is a schematic cross
sectional view of the canister valve adapter shown in FIG. 14A.
[0186] Filling head adapter 150 comprises a body 101, formed in a
predetermined shape, e.g., a cylinder, or other form, and may be
mounted on a filling head of a canister filling system. For
example, the filling head, prior to mounting of filling head
adapter 150, may be designed to enable insertion of a canister
valve in which the exterior port of the valve is oriented along, or
parallel to, the longitudinal axis of the canister. Mounting of
filling head adapter 150 on the filling head provides a fluidic
path between a longitudinally oriented filling port of the filling
head and the laterally oriented exterior ports 16 of the canister
valve.
[0187] For example, filling head adapter 150 may include mounting
structure 156 (e.g., holes as in the example shown, threading, or
one or more brackets, projections, or other structure), to enable
or facilitate mounting of filling head adapter 150 onto the filling
head. In the example shown, mounting filling head adapter 150 onto
the filling head may include inserting bolts, screws, rivets,
clips, or other mounting elements through mounting structure 156
and into the filling head. Sealing structure (e.g., an O-ring,
sealing disk, or other sealing structure) may be mounted, e.g.,
within sealer groove 154, between filling head adapter 150 and the
filling head.
[0188] When filling head adapter 150 is mounted on the filling
head, a fluidic path may be formed between a filling port of the
filling head and exterior ports 16 of a canister valve that is
inserted into interior space 160 of filling head adapter 150, which
is accessible via opening 103 located at a side of the adapter
designed to receive the canister (e.g., at the bottom). When the
canister valve is inserted into interior space 160, valve seal 166
(e.g., an O-ring as shown, or a sealing disk or other sealing
structure) may prevent leakage of gas to a space within interior
space 160 that is in fluidic contact with plunger 26 of the
canister valve. Canister limiting structure 161 may facilitate
proper positioning of gas canister 46 and the canister valve within
interior space 160. In some cases, canister seal 168 (e.g., an
O-ring or other type of seal) may prevent or inhibit leakage of gas
to the outside of interior space 160 between gas canister 46 and
filling head adapter 150.
[0189] When the canister valve is inserted into interior space 160
of filling head adapter 150, pressurized gas (e.g., in gaseous or
liquefied form) may be released from the canister filling system
via a longitudinally oriented filling port. The lateral channel 152
of filling head adapter 150 may be located so as to be in fluidic
connection with the filling port. A seal between lateral channel
152 and the filling head, e.g., within sealer groove 154, may
prevent or impede leakage or any other flow of the gas other than
along lateral channel 152. The released pressurized gas may flow
laterally from the filling port along lateral channel 152 to one or
more longitudinal channels 162, e.g., at one or more ends of
lateral channel 152. The pressurized gas may flow into filling head
adapter 150 via each longitudinal channel 162 to a radial channel
164, each of which is oriented radially or otherwise laterally
within filling head adapter 150. The pressurized gas may flow
laterally inward within each radial channel 164 to exterior ports
16 of the canister valve. Valve seal 166 and canister seal 168 may
facilitate the flow of pressurized gas from radial channels 164
into exterior ports 16.
[0190] Indentations 158 may facilitate holding of filling head
adapter 150, e.g., when mounting to the filling head. Bores 159 in
indentations 158 may also facilitate drilling, machining, or
otherwise forming radial channels 164.
[0191] In some examples, a tube may form a fluidic connection
between the filling port of the filling head to a bore 159 of
filling head adapter 150.
[0192] Canister filling machine 180 may be a component of a
canister filling system. Canister filling machine 180 is configured
to fill a gas canister 46 whose gas canister valve 10 is inserted
into filling head adapter 150 with compressed (e.g., liquefied) gas
from a gas source (not shown). For example, canister filling
machine 180 may be controllable by an automatic (e.g.,
computerized) control system or a manually. The gas may flow in a
controlled manner to filling head adapter 150 via filling head 184.
For example, filling head 184 may include various regulation and
control units, such as electrically controllable valves (e.g.,
solenoid valves), pressure transducers, or other control units.
Canister filling machine 180 may include monitoring and control
components 186, e.g., including a shutoff valve and a mass flow
meter.
[0193] Canister filling machine 180 may include canister-loading
assembly 182. In the example shown, canister-loading assembly 182
includes a linear conveyor 188 that is configured to convey an
upright (e.g., substantially vertical with gas canister valve 10
oriented upward) gas canister 46 to along a linear track to a
position below filling head adapter 150 and filling head. When gas
canister 46 is positioned below filling head adapter 150, linear
piston 190 may lift gas canister 46 so that gas canister valve 10
is inserted into filling head adapter 150. In other examples, the
orientations of at least some components of the canister filling
machine and the canister-loading assembly may be inverted. In this
case, the loading assembly may be configured to lower an inverted
gas canister 46 to insert gas canister valve 10 into a filling head
adapter 150 below the gas canister 46. In other examples, gas
canister valve may be pushed horizontally or in another orientation
into filling head adapter 150.
[0194] FIG. 15A schematically illustrates a canister valve adapter
for placement on canister valve with laterally oriented exterior
ports to enable connection of the canister valve to a filling head
of a canister filling system. FIG. 15B is a schematic cross section
of the canister valve adapter shown in FIG. 15A.
[0195] Canister valve adapter 170 is configured for placement over
and attachment to a canister valve that includes laterally oriented
exterior ports 16. Canister valve adapter 170 may then enable
filling of a gas canister 46 to which the canister valve is
attached by a filling head whose filling port is oriented
longitudinally.
[0196] In the example shown, canister valve adapter 170 includes
body 171 and is assembled from two components, canister valve
fitting 151 and filling head fitting 172. In the example shown,
canister valve fitting 151 and filling head fitting 172 are
attached to one another by threading 176. Sealing between
longitudinal channel 174 of filling head fitting 172 and lateral
channel 152 of canister valve fitting 151 may be provided by a seal
(e.g., O-ring, gasket, or other sealing structure) that is placed
within sealer groove 154. In other examples, filling head fitting
172 may be attached to canister valve fitting 151 by welding or
soldering, or by using one or more bolts, screws, pins, clips,
adhesives, or other attachment structure. Indentations 178 may
facilitate assembly or handling during use.
[0197] Filling head fitting 172 is shaped to enable canister valve
adapter 170 to fit into a filling head of a canister filling
system. For example, at least a distal (to gas canister 46) end of
filling head fitting 172 may be shaped similarly to a distal end of
a canister valve with a longitudinal exterior port at its distal
end. When canister valve adapter 170 is placed on a canister valve,
the distal end of the canister valve may fit within interior space
160 within canister valve fitting 151, after insertion via opening
173. Valve seal 166 (e.g., an O-ring as shown, a sealing disk, or
other sealing structure) may prevent leakage of pressurized gas to
a space within interior space 160 that is in fluidic contact with
plunger 26 of the canister valve. Canister seal 168 may prevent
leakage of pressurized gas at the interface between
[0198] Canister valve fitting 151 is constructed similarly to
filling head adapter 150, as described above. When canister valve
adapter 170 is inserted into the filling head of a canister filling
system, longitudinal channel 174 within filling head fitting 172
may be in fluidic connection with the filling port of the filling
head. Pressurized gas may therefore flow from the filling port, via
longitudinal channel 174, to lateral channel 152 of canister valve
fitting 151. The pressurized gas may flow within canister valve
fitting 151 via each longitudinal channel 162 to a radial channel
164, each of which is oriented radially or otherwise laterally
within canister valve fitting 151. The pressurized gas may flow
laterally inward within each radial channel 164 to the laterally
oriented exterior ports 16 of the canister valve. Valve seal 166
and canister seal 168 may facilitate the flow of pressurized gas
form radial channels 164 into exterior ports 16.
[0199] FIG. 16A schematically illustrates another filling head
adapter to enable connection of a gas canister valve with laterally
oriented exterior ports to a filling head of a canister filling
system.
[0200] FIG. 16B schematically illustrates a view of the canister
valve adapter shown in FIG. 16A, showing a side of the adapter into
which the canister valve is insertable.
[0201] FIG. 16C is a top view of the canister valve adapter shown
in FIG. 16A.
[0202] FIG. 16D is a schematic cross sectional view of the canister
valve adapter shown in FIG. 16A.
[0203] FIG. 16E is a schematic cross sectional view of the canister
valve adapter shown in FIG. 16A with the top of a gas canister
inserted for filling and held inside the adapter.
[0204] Filling head adapter 200 may include body 201, having a
cylindrical form or other form, and be mounted on a filling head of
a canister filling system. For example, the filling head, prior to
mounting of filling head adapter 200, may be designed to enable
insertion of a canister valve via opening 203 in body 201, which
may be located, for example, at the bottom of body 201. When
inserting the canister valve into adapter 200 the exterior port of
the valve may be oriented along, or parallel to, the longitudinal
axis of the canister. Mounting of filling head adapter 200 on the
filling head provides a fluidic path between a longitudinally
oriented filling port of the filling head and the laterally
oriented exterior ports 16 of the canister valve.
[0205] For example, filling head adapter 200 may include mounting
structure 256 (e.g., holes as in the example shown, threading, or
one or more brackets, projections, or other structure), to enable
or facilitate mounting of filling head adapter 200 onto the filling
head. In the example shown, mounting filling head adapter 200 onto
the filling head may include inserting bolts, screws, rivets,
clips, or other mounting elements through mounting structure 256
and into the filling head. Sealing structure (e.g., an O-ring,
sealing disk, or other sealing structure) may be mounted, e.g.,
within sealer groove 254, between filling head adapter 200 and the
filling head.
[0206] When filling head adapter 200 is mounted on the filling
head, a fluidic path may be formed between a filling port of the
filling head and exterior ports 16 of a canister valve that is
inserted into void 260 of filling head adapter 200, and plunged
into internal space 262. When the canister valve is inserted into
internal space 262 (in this figure only the valve body 12 of the
canister is shown for brevity), valve seal 266 (e.g., an O-ring as
shown, or a sealing disk or other sealing structure) seals interior
space 262 at an opening through which the top of the canister valve
is inserted, preventing leakage of gas from that space to ambient
air. Canister limiting structure 261 may facilitate proper
positioning of gas canister 46 and the canister valve within
interior space 262 and void 260.
[0207] When the canister valve is inserted into internal space 262
of filling head adapter 200 (in this figure and the following
figures only the valve body 12 of the canister is shown for
brevity), pressurized gas (e.g., in gaseous or liquefied form) may
be released from the canister filling system via a longitudinally
oriented filling port. The bore 274 of filling head adapter 200 may
be located so as to be in fluidic connection with the filling port.
A seal may surround bore 274 and the filling head, e.g., within
sealer groove 254, to prevent or impede leakage or any other flow
of the gas other than along bore 274 into sealed void 260. The
released pressurized gas may flow into sealed interior space 262
and fill it, surrounding the canister valve, e.g., within the space
defined between the canister valve and internal space 262, filling
groove 263, surrounding the canister valve at the location of the
inlet of and filling the canister through the laterally oriented
external ports 16.
[0208] FIG. 17 is a schematic cross sectional view of the canister
valve adapter with a static pin actuator. Adapter 300 may include
body 301 (e.g., cylindrical body, bot an adapter body of other
forms may also be used). Adapter 300 is essentially very similar to
the adaptor shown in FIGS. 14A-14C, but is further provided with
static actuator pin 280 extending inwardly into interior space 160,
protruding from an internal surface facing the interior space 160
and located opposite the anticipated position of plunger 26 of the
canister valve, when the canister is inserted into the adapter (via
opening 303), so that when properly placed inside the adapter and
held in position, static actuator pin 280 presses plunger 26 into
the valve body, depressing valve poppet 18 and thus facilitating
flow of gas into the canister.
[0209] FIG. 18 is a schematic cross sectional view of the canister
valve adapter with a dynamic pin actuator. Adapter 400 may include
body 401 that may be provided in cylindrical form or other forms.
Adapter 400 is essentially very similar to the adaptor shown in
FIG. 17, but in the embodiment shown in this figure the actuator
pin 290 is a dynamic actuator pin. Dynamic actuator pin 290 is
positioned within a bore 294 extending from an external surface
adapted to be face and cooperate with the filling head of the
filling machine and an internal surface facing the interior space
160. The dynamic actuator pin 290 may be movable within the bore,
and may be longer than the length of the bore so that the opposite
ends of the dynamic actuator opposite ends protrude from opposite
sides of bore 294. Seal 292 (e.g., an O-ring as shown, or a sealing
disk or other sealing structure) may be used to ensure that
interior space 160 is properly sealed. When adapter 400 is attached
to the filling head, the filling head (e.g., an outside surface or
protrusion) is configured to depress dynamic actuator pin 290 so
that when the canister valve is inserted (via opening 403) and
properly placed inside the adapter, dynamic actuator pin 290
actuates plunger 26 to aid the flow of gas into the canister.
[0210] The use of an actuator pin (e.g., as shown in FIG. 17 and in
FIG. 18) eliminates the need for the filling pressure to overcome
the opposing force of the spring 20 that energizes poppet 18
allowing lower filling pressures then filling pressures that would
be required to move the poppet 18.
[0211] According to some embodiments of the invention filling
methods for filling a gas canister, e.g., a CO2 canister for use in
a carbonation machine, are provided.
[0212] According to some embodiments of the invention, a filling
head adapter may be removably coupled to a filling head of a
canister filling system, and/or be an integral part of the canister
filling system.
[0213] Different embodiments are disclosed herein. Features of
certain embodiments may be combined with features of other
embodiments; thus, certain embodiments may be combinations of
features of multiple embodiments. The foregoing description of the
embodiments of the invention has been presented for the purposes of
illustration and description. It is not intended to be exhaustive
or to limit the invention to the precise form disclosed. It should
be appreciated by persons skilled in the art that many
modifications, variations, substitutions, changes, and equivalents
are possible in light of the above teaching. It is, therefore, to
be understood that the appended claims are intended to cover all
such modifications and changes as fall within the true spirit of
the invention.
[0214] While certain features of the invention have been
illustrated and described herein, many modifications,
substitutions, changes, and equivalents will now occur to those of
ordinary skill in the art. It is, therefore, to be understood that
the appended claims are intended to cover all such modifications
and changes as fall within the true spirit of the invention.
* * * * *