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CA 2960796 2017-03-15
TITLE OF INVENTION
HEATABLE CANTEEN
FIELD OF INVENTION
The instant invention relates to heatable containers. More particularly, the
invention relates to a heatable canteen.
PRIOR ART
The prior art has numerous devices for heating vessels. For example, tea
kettles
have been used to heat liquid therein and commonly includes a hinged lid which
covers a
port on the top of the kettle. When the fluid, such as water, reaches a
sufficient
temperature, the lid opens to let steam out indicating the fluid therein has
reached a
desired temperature.
Canteens are well known to be fashioned in a vessel of a generally hand held
size
with a port to which a top fixes, such as a threaded top, to maintain the
fluid therein in a
manner to prevent leakage during transportation or evaporation. While there
are many
known canteen types and configurations, there remains a need to improve
canteens to
have multifunction characteristics.
SUMMARY OF INVENTION
It is an object to improve heatable vessels.
It is a further object to improve canteens.
Still another object is to provide a heatable canteen.
A further object is to provide a distillation device.
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Yet another object is to provide heatable canteen with a mechanism for
retrieving
the same from a fire.
Accordingly, an embodiment of the invention is directed to a heatable canteen.
The
heatable canteen preferably includes a hand carried vessel having a bottom and
upward
extending wall which terminates into a top having an open top receiving
surface, such as a
port. A removable cap is connected to the top receiving surface. There can be
provided a
removable lid which removably connects to the vessel about the top, e.g., by
way of
press-fit, threaded or snap-fit relation. Connected preferably within the lid
is a high-heat
resistant line which interconnects the lid with the vessel or cap. The line
can be of a
suitable length such as 6 to 10 feet.
The cap includes an outer portion which removably sealably connects to the top
receiving surface and has an interior channel extending therethrough and has a
valve seat
formed on a lower end thereof. A valve stem with a valve head seal is operably
disposed
in the interior channel and a spring is operably disposed about the valve stem
in a manner
to bias the valve head and seal against the valve seat to a normally closed
position. In this
way when the cap is disposed onto the vessel, the fluids are normally
contained therein
regardless of orientation of the canteen. The spring is of a spring constant
such that upon
the canteen being heated, for example over a fire, upon sufficient heat being
applied the
pressure builds to cause the spring to compress relieving the pressure and
alerting the user
that the fluids are sufficiently heated.
Optionally, another embodiment contemplates a weight valve stop which seals by
virtue of its configuration and mass and gravity when oriented above the valve
seat. In
this embodiment, when the pressure in the vessel is sufficiently high it will
overcome the
weight of the valve stop removing it from the valve seat.
Another aspect of the invention is to provide a distillation tube removably
connectable to the cap and in communication with the interior channel thereof.
The
distillation tube can have a telescoping portion extending laterally from the
cap. The
distillation tube can be in a collapsed condition for storage with a portion
of one end
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within the cap of the canteen with the other telescoping portion projecting
laterally
outwardly from the cap of the canteen thus the two forming an L-shape.
In addition, there is provided a pair or arms, preferably removable and
pivotal,
connected to the canteen providing a handle which may be grasped by the user
to place
the canteen over a fire. The arms can be connected to a secondary vessel which
removably
friction fits about the hand held vessel and can be used to hold the same over
a fire or can
be removed and used as a cooking vessel.
Further objects will be apparent from reading the disclosure and drawings
hereto.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an embodiment of the invention.
FIG. 2 is a partial sectional view of a cap of the invention.
FIG. 3 is a functional representation of the cap in a closed position.
FIG. 4 is a function representation of the cap in an open position.
FIG. 5 is a secondary vessel with arms closed.
FIG. 6 is a secondary vessel with arms open.
FIG. 7 is sectional schematic of another embodiment of the invention.
FIG. 8 is a sectional schematic of FIG. 7 with a pressure receive valve
removed.
FIG. 9 depicts a pressure relief valve seen in FIG. 7.
FIG. 10 depicts another embodiment of the invention.
FIG. 11 depicts still another aspect of the invention.
FIG. 12 depicts still another embodiment of the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
Referring now to the drawings, a heatable canteen of the instant invention is
generally designated with the numeral 10. The heatable canteen 10 preferably
includes a
hand held vessel 12 which here is seen as generally cylindrical, however,
other geometric
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configurations are contemplated. The canteen 12 and its components can
preferably
comprise high- temperature resistance metal. Exemplary metals can preferably
include
high-temperature resistance metal such as stainless steel is a metal alloy,
made up of steel
mixed with elements such as chromium, nickel, molybdenum, silicon, aluminum,
and
carbon having a melting point of above 1700 degree Celsius. Refractory metals
suitable
for alloys with the invention can include molybdenum, for example, titanium-
zirconium-
molybdenum alloy with extra-ordinary strength and creeps resistance in high
temperatures. Tungsten may also be part of an alloy to improve its high-
temperature
resistivity. Others include niobium alloys with tungsten to make different
high heat
resistant or rhenium and its alloys. It is recognized other materials can be
employed with
less desirable melting points, which might be useful as well.
The hand held vessel 12 has a bottom 14 and upward extending wall 16 which
terminates into a top 18 by way of a neck 20. The top 18 has an open top
receiving surface
22, such as a port, which communicates with an inner surface 24 of neck 20.
A removable cap 26 is connected to the top receiving surface 22. The cap 26
includes an outer portion 28 which removably sealably connects to the top
receiving
surface 22 and has an interior channel 30 extending therethrough and has a
valve seat 32
formed on a lower end 34 thereof. An upper ledge 36 is formed in the interior
channel 30.
One type of valve assembly includes a valve stem 38 having a valve head seal
40 is
operably disposed in the interior channel 30. The valve head seal 40 can
include a gasket
42. A spring 44 is operably disposed about the valve stem 38 one one end 46
against
upper ledge 36 and another end 48 against valve head seal 40 in a manner such
that it
biases the valve head seal 40 and gasket 42 against the valve seat 32 to a
normally closed
position. In this way when the cap 26 is disposed onto the hand held vessel
12, the fluids
are normally contained therein regardless of orientation of the canteen 10.
This permits
the user to carry the canteen 10 in a backpack or like or on a belt without
risk of leakage.
The spring 44 is of a spring constant such that upon the canteen 12 being
heated, for
example over a fire, upon sufficient heat being applied the pressure builds to
cause the
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spring 44 to compress relieving the pressure and alerting the user that the
fluids are
sufficiently heated.
There can be provided a removable lid 60 which removably connects to the
vessel
12, e.g., by way of press-fit, threaded or snap-fit relation. It is envisioned
that there can be
an attachment 61 which can connect about an end of the vessel 12. Optionally,
it is also
envisioned that the lid 60 can directly connect about an end of the vessel 12.
Connected
preferably within the lid 60 is a high-heat resistant line 62 which
interconnects the lid 60
with the vessel 12 or cap 26. The high-heat resistant line 62 can be of a
suitable length
such as 6 to 10 feet. The line can be made of high temperature resistant
material such as
TETRAGLAS 3000TM from Goodyear which is a high temperature fabric for service
temperatures to 2300 F with short excursions to 3000 F.
In addition, there is provided a pair or arms 50, preferably removable and
=pivotal,
and as envisioned can be connected to the canteen 12 directly or indirectly
providing a
handle which may be grasped by the user to place the canteen 12 over a fire.
In the case of
indirect connection, the arms 50 can be connected to a secondary vessel 52
which
removably friction fits about the hand held vessel 12 and can be used to hold
the same
over a fire or can be removed and used as a separate cooking vessel.
FIG. 3 depicts a closed position. FIG. 4 depicts an open position when the
canteen
is under heat. The cap 26 can be hingedly connected to the neck 20 by way of a
hinge
lock mechanism 54 of the type known in the art.
Additionally, a safety relief valve 56 can also be incorporated into the hand
held
vessel 12. In this way, if the other valve assembly fails to open under
dangerous
temperature and pressure, the safety valve 56 will open if a predetermined
temperature/pressure condition exists which is predetermined a dangerous
level.
As seen in FIG. 7, 8 and 9, an alternative embodiment of the invention is
provided.
Here, a canteen 100 includes a hand held vessel 112 which here is seen as
generally
cylindrical, however, other geometric configurations are contemplated. The
hand held
vessel 112 has a bottom 114 and upward extending wall 116 which terminates
into a top
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118 by way of a neck 120. The top118 has an open top receiving surface 122,
such as a
port, which communicates with an inner surface 124 of neck 120.
A removable cap 126 is connected to the top receiving surface 122. The cap 126
includes an outer portion 128 which removably sealably connects to the top
receiving
surface 122, such as a threaded surface, and has an interior channel 130
extending
therethrough which can also be threaded. In this embodiment, there is provided
a J shaped
pressure relief valve 132 having a stem 134 having a threaded end 136 for
threadbare
connecting to threaded channel 130. Inside the stem 134 can be a valve seat
138 formed in
a lower end 140 thereof. An upper ledge 142 is formed in a midsection 144
thereof. A
valve assembly lies within the stem 134 includes a valve head seal 146
operably disposed
therein. A spring 148 or other biasing mechanism can be operably disposed
against upper
ledge 142 and another end against valve head seal 146 in a manner to provide a
normally
closed position. In this way, the fluids are normally contained therein
regardless of
orientation of the canteen 100. This permits the user to carry the canteen 100
in a
backpack or like or on a belt without risk of leakage.
Another embodiment contemplates a weight valve stop 200 which seals by virtue
of its configuration and mass and gravity when oriented above the valve seat
138. In this
embodiment, when the pressure in the vessel 12 is sufficiently high it will
overcome the
weight of the valve stop 200 removing it from the valve seat 138.
Another portion of J shaped pressure relief valve 132 is angled conduit 150
which
has one end 151 rotatably connected to the lower end 140 of the stem 134 and
another end
153 terminating adjacent the cap 126 and has an orifice 152 which faces inside
wall 116
adjacent the cap 126. In opposite relation to conduit 150 is a weight 154
fixable attached
to end 151 such that when the canteen is turned on its side, the end 153
remains up in
order to aid in venting to outside atmosphere through the pressure relief
valve 132. The
pressure relieve valve 132 works in a like manner as described above.
Additionally, a
safety valve 160 can be incorporated into the canteen 100. The canteen 10, 100
and its
components can be made of high heat resistant material, such as stainless
steel for all parts
which are exposed high heat.
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Another aspect of the invention is a distillation tube 210 removably
connectable to
the cap 26 and in communication with the interior channel 30. The distillation
tube 210
can have a telescoping portion 212 extending laterally from the cap 26. The
distillation
tube 210 can be in a collapsed condition for storage with a portion of one end
214 within
the cap 26 of the canteen with the other telescoping portion 212 projecting
laterally
outwardly from the cap 26 of the canteen thus the two forming an L-shape.
While the instant invention has been described in and shown above, there are
various modifications, derivations and improvements which can be employed.
Accordingly, these modifications, derivations and improvements are to be
covered by the
appended claims.
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