U.S. patent application number 10/589451 was filed with the patent office on 2007-07-26 for airframe tent and pump.
This patent application is currently assigned to Nemo Equipment, Inc.. Invention is credited to Cam Brensinger.
Application Number | 20070169803 10/589451 |
Document ID | / |
Family ID | 34885983 |
Filed Date | 2007-07-26 |
United States Patent
Application |
20070169803 |
Kind Code |
A1 |
Brensinger; Cam |
July 26, 2007 |
Airframe tent and pump
Abstract
An airframe supported tent 10 includes at least one pair of
coupled airbeams 12. The coupled air beams 12 include first 36a and
second 36b redundant airbeams for providing support to the tent
structure 10 when inflated. The airframe supported tent 10 also
includes an interface 14, fluidly coupled to each of the first and
second redundant air beams 36, for allowing all of the airbeams to
be inflated and deflated through the interface. An air pump 50 is
also provided which is small, compact and lays generally flat when
compressed. The air pump 50 couples with the interface 14 on the
tent, to inflate and deflate all of the air beams generally
simultaneously.
Inventors: |
Brensinger; Cam; (Nashua,
NH) |
Correspondence
Address: |
BOURQUE & ASSOCIATES;INTELLECTUAL PROPERTY ATTORNEYS, P.A.
835 HANOVER STREET
SUITE 301
MANCHESTER
NH
03104
US
|
Assignee: |
Nemo Equipment, Inc.
Nashua
NH
03060
|
Family ID: |
34885983 |
Appl. No.: |
10/589451 |
Filed: |
February 11, 2005 |
PCT Filed: |
February 11, 2005 |
PCT NO: |
PCT/US05/04398 |
371 Date: |
August 11, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60543885 |
Feb 12, 2004 |
|
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|
Current U.S.
Class: |
135/116 |
Current CPC
Class: |
E04H 15/20 20130101;
E04H 2015/201 20130101 |
Class at
Publication: |
135/116 |
International
Class: |
E04H 15/56 20060101
E04H015/56 |
Claims
1. An airframe supported tent, comprising: a tent structure; and at
least one pair of coupled airbeams, said at least one pair of
coupled airbeams coupled to at least a first portion of said
structure, said at least one pair of coupled airbeams including
first and second airbeams, each said first and second airbeams of
said of at least one pair of coupled airbeams adapted for
containing air, and when filled with air, for creating a semi-rigid
frame member for said tent structure.
2. The airframe supported tent of claim 1, wherein said tent
structure includes a canopy portion and a floor portion.
3. The air frame supported tent of claim 2 wherein said at least
one pair of coupled airbeams is coupled to said canopy portion of
said tent structure and extends from proximate a first region of
said floor portion to proximate a second region of said floor
portion.
4. The airframe supported tent of claim 3 wherein said at least one
pair of coupled airbeams form an arcuate shape when inflated with
air.
5. The air frame supported tent of claim 1 wherein each of said
first and second air beams have an outer surface, and wherein said
first and second air beams are coupled to one another approximate
one region of their outer surface.
6. The air frame supported tent of claim 5 wherein said first and
second airbeams are generally circular shaped and have a generally
circular circumference, and wherein the first and second airbeams
are joined proximate a tangent of each of their respective
circumferentially shaped outer surfaces.
7. The air frame supported tent of claim 5 wherein said first and
second airbeams are shaped in a shape selected from the group
consisting of a square, a rectangle, a triangle, an octagon and a
trapezoid.
8. The air frame supported tent of claim 5 wherein said at least
one pair of coupled airbeams include first and second airbeams, and
wherein each said first and second airbeams include an outer skin
and an inner skin.
9. The air frame supported tent of claim 8 wherein said outer skin
is made from a non-air-retaining material, and said an inner skin
is made from an air retaining material.
10. The airframe-supported tent of claim 8 wherein said outer skin
and said inner skin are generally permanently coupled to one
another.
11. The air frame supported tent of claim 9 wherein said inner skin
and outer skin are separate structures and wherein said inner skin
forms an air retaining bladder which may be removed from said outer
skin of said air beam.
12. The airframe supported tent of claim 1, further including an
airbeam interface, disposed proximate a region of said tent
structure, said airbeam interface fluidly coupled to said first and
second air beams, for allowing said first and second airbeams to be
filled with air from said airbeam interface, and for allowing said
first and second airbeams to be purged of air from said airbeam
interface.
13. The airframe supported tent of claim 12, wherein said air beam
interface is disposed proximate and exterior region of said tent
structure.
14. An airframe supported tent, comprising: a tent structure
including a canopy portion and a floor portion; at least one pair
of coupled airbeams, wherein said at least one pair of coupled
airbeams is coupled to said canopy portion of said tent structure
and extends from proximate a first region of said floor portion to
proximate a second region of said floor portion, each said first
and second airbeams of said of at least one pair of coupled
airbeams adapted for containing air, and when filled with air, for
creating an arcuate shaped semi-rigid frame member for said tent
structure; and wherein said tent structure further includes an
airbeam interface, disposed proximate an exterior region of said
tent structure, said airbeam interface fluidly coupled to said
first and second air beams, for allowing said first and second
airbeams to be filled with air from said airbeam interface, and for
allowing said first and second airbeams to be purged of air from
said airbeam interface.
15. A manually operated air pump, comprising: a pump formed of a
fabric type material and having an inlet for allowing said pump to
be inflated with the air, and an outlet adapted to discharge the
air contained within said pump when said pump is compressed, said
pump adapted to take on and generally maintain a generally flat
shape when compressed.
16. The manually operated air pump of claim 15, wherein said inlet
includes a one way valve preventing air from escaping said pump
when said pump is compressed, and wherein said output includes a
one way valve preventing air from escaping said pump when said pump
is being inflated.
17. The manually operated air pump of claim 15, wherein said pump
has a bellows shape.
18. The manually operated air pump of claim 15, wherein said pump
further includes a secondary inflation valve.
19. The manually operated air pump of claim 18, wherein said
secondary inflation valve serves a dual purpose of offering an
interface for a source of air and for providing a moisture vent for
an interior region of said pump.
20. A manually operated air pump, comprising: a pump formed of a
fabric type material and having an inlet for allowing said pump to
be inflated with the air, and an outlet adapted to discharge the
air contained within said pump when said pump is compressed, said
pump adapted to take on a generally flat shape when compressed.
21. The manually operated air pump of claim 20, wherein said inlet
includes a one way valve preventing air from escaping said pump
when said pump is compressed, and wherein said output includes a
one way valve preventing air from escaping said pump when said pump
is being inflated.
22. The manually operated air pump of claim 20, wherein said
bellows shaped pump is filled with foam, and wherein after said
bellows shaped pump is compressed, said foam serves as a return
mechanism causing said bellows to expand and fill with air through
said inlet.
23. The manually operated air pump of claim 21, wherein said inlet
includes a quick fill valve.
24. The manually operated air pump of claim 23, wherein said quick
fill valve includes a "dump" type valve having a check valve
portion.
Description
TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to an inflatable tents and its
components and more particularly, relates to an inflatable tent
having redundant airbeams connected via a sewing flap at the
midseam of the redundant airbeams, an integrated pump, a valve
interface, a soft pump, and a rollup stuff sack for storing the
components therein.
DESCRIPTION OF THE RELATED ART
[0002] Conventional tents utilize rigid and segmented poles.
Typically, the poles are made out of fiberglass or aluminum and are
used in conjunction with tent stakes to support the tent structure.
The poles can be problematic during an overnight hike because of
their bulkiness. The poles are also fragile and prone to failure
under extreme conditions. They can bend and break and tear through
a tent in heavy winds.
[0003] Conventional tents are adequate for their basic purpose and
function however, some require considerable effort to set up and
break down. It often takes some practice to set up a conventional
tent because the poles may come in different lengths or shapes. The
poles also tend to freeze together in extremely cold conditions,
making the break down of the tent difficult.
[0004] Most conventional tents are transported in ordinary fabric
stuff sacks. It is desirable for carrying the tent in a backpack to
have it store as small and light as possible. Conventional tents
are limited in how small they may be packed by the length of their
poles.
[0005] Inflatable tents have been designed in the past. Most
inflatable tents rely on large volume inflatable components or high
pressure smaller volume components to achieve structural integrity.
Large volumes require more time to inflate, whereas high pressure
supports require heavy pumps or compressed air. Neither of these
systems are ideal for the backpacking application. The ideal system
uses low pressure, low volume supports.
[0006] The problems with the prior art inflatable tents have
included a lack of reparability in the case of puncture, excess
weight as a result of outdated material technology, and inefficient
inflation either because of high air volumes or cumbersome pumps.
Some higher pressure, lower volume designs have necessitated the
use of compressed air for inflation which is heavy, expensive and
potentially dangerous, making it impractical for backpacking
applications.
[0007] Finally, a tent should be easy and inexpensive to
manufacture, thus keeping the cost down for the consumer. The
present invention is directed to an inflatable backpacking tent and
its components designed to achieve each of these goals.
SUMMARY OF THE INVENTION
[0008] The present invention relates to an inflatable tent having
redundant airbeams connected by means of a sewing flap at the
midseam of the redundant airbeams, for holding bladders therein.
The present invention also features an integrated pump and soft
pump for pumping air into the bladders of the inflatable tent, and
a valve interface for receiving the air from the integrated pump or
soft pump and distributing it to at least one of the bladders, and
a rollup stuff sack for storing the inflatable tent and its
components.
[0009] It is important to note that the present invention is not
intended to be limited to a system or method which must satisfy one
or more of any stated objects or features of the invention. It is
also important to note that the present invention is not limited to
the preferred, exemplary, or primary embodiment(s) described
herein. Modifications and substitutions by one of ordinary skill in
the art are considered to be within the scope of the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] These and other features and advantages of the present
invention will be better understood by reading the following
detailed description, taken together with the drawing wherein:
[0011] FIG. 1 is a perspective view of an inflatable tent having a
double frame construction according to the present invention;
[0012] FIG. 2 is a cross sectional view of a sewing flap used
between an inner airbeam and an outer airbeam of a frame, wherein
the redundant airbeams provide the supporting structure of the
inflatable tent according to one aspect of the present
invention;
[0013] FIG. 3 is a top view of a valve interface used to receive
air in which to inflate the bladders of the inflatable tent
according to the present invention;
[0014] FIG. 4 is a top view of an integrated pump used to pump air
into the bladders of the inflatable tent by means of the valve
interface according to the present invention;
[0015] FIG. 5 is a perspective view of a soft pump used to pump air
into the bladders of the inflatable tent using the valve interface
according to the present invention;
[0016] FIG. 6a is a perspective view of a roll-up stuff sack in a
rolled out position being stuffed with the inflatable tent and its
components according to the present invention;
[0017] FIG. 6b is a perspective view of the roll-up stuff sack
being rolled up to hold the inflatable tent and its components
according to the present invention;
[0018] FIG. 6c is a perspective view of a roll-up stuff sack in a
rolled up position used to hold the inflatable tent and its
components when not in use, according to the present invention;
[0019] FIG. 6d is a perspective view of the roll-up stuff sack in a
rolled out position used to dry or air out the inflatable tent, its
components, or other items according to the present invention;
[0020] FIG. 7 is a photograph of an inflatable tent having a single
frame construction according to the present invention;
[0021] FIG. 8 is a schematic diagram of a foam filled the fabric
pump according to one aspect of the present invention;
[0022] FIG. 9 is a schematic diagram illustrating the construction
of the foam a filled the fabric pump of the present invention;
and
[0023] FIG. 10 is an exploded diagram of a fill and dump valve in
accordance with one aspect of the present invention;
DETAILED DESCRIPTION OF THE INVENTION
[0024] The present invention includes a novel inflatable tent 10,
FIG. 1, and its components. The inflatable tent 10 has a canopy
portion 20 attached to a floor portion 22. In the preferred
embodiment, the canopy portion 20 and the floor portion 22 are made
of waterproof/breathable nylon or polyester fabric however, other
weather resistant and durable materials may be substituted.
[0025] The canopy portion 20 may be formed from a number of panels
30 that are attached to at least one frame 12, which will be
described below, by means of a sewing flap 18, and also attached to
a floor portion 22. In an alternative embodiment, the canopy
portion 20 is a single piece of material.
[0026] It is important to note that the inflatable tent may have
any number of frames 12, FIG. 1. For example, a double frame
embodiment is shown in FIG. 1, whereas a single frame embodiment is
shown in FIG. 7. A first portion 94 and second portion 96 of the
inflatable tent 10 are also made from the same type of material as
that of panels 30. The portions 94, 96 have stake loops 98 for
receiving a tent stake.
[0027] The inflatable tent 10 is held erect by inflating one or
more of the frames 12 and staking the stake loops 98 of the
portions 94, 96 in the longitudinal direction. The inflatable tent
10 is held erect without the need for tent poles. In alternative
embodiments, the sides of the inflatable tent 10 may also have one
or more stake loops 98 for receiving tent stakes and for holding
the inflatable tent 10 in place.
[0028] The frame 12, FIG. 2, includes redundant airbeams 13a, 13b
enclosing bladders 36a, 36b. The redundant airbeams 13a, 13b are
preferably made of dimensionally stable synthetic fabric, however,
other materials may be substituted. The bladders 36a, 36b are
inflatable members and contained within the redundant airbeams 13a,
13b. The bladders 36a, 36b are elastic and airtight, and are used
to receive and hold air. Further, the bladders 36a, 36b are easily
replaceable and repairable in the event of a puncture.
[0029] When the bladders 36a, 36b are inflated, the redundant
airbeams 13a, 13b are arcuate in overall shape and form an inner
airbeam 13a and an outer airbeam 13b. The redundant airbeams 13a,
13b restrict the inflation of the bladders 36a, 36b to a certain
shape and diameter. In the preferred embodiment, the bladders 36a,
36b are made from sheet urethane that is RF welded along the edges;
however, other expandable and airtight materials and methods of
heat sealing may be substituted.
[0030] The redundant airbeams 13a, 13b provide the supporting
structure of the inflatable tent 10. The twin shell construction of
the frame 12 includes an outer layer of fabric of the redundant
airbeams 13a, 13b, for providing the shape of the redundant
airbeams, 13a, 13b, and for containing the bladders 36a, 36b, while
the inner material of the bladders 36a, 36b hold air when
inflated.
[0031] When the bladders 36a, 36b are inflated, the inner airbeam
13a is arcuate and the outer airbeam 13b is also arcuate and
extends parallel and adjacent the inner airbeam 13a. In the
preferred embodiment, the outer airbeam 13b is positioned above the
inner airbeam 13a although this is not a limitation of the present
invention, as the airbeams could also be side by side in the same
general horizontal plane. In addition, although the present
invention is explained using circular shaped airbeams, this is for
exemplary purposes only as the beams could be any shape including,
but not limited to triangular, square, rectangular, octagonal,
trapezoidal, etc.
[0032] The bladders 36a, 36b and the redundant airbeams 13a, 13b
provide sturdy support for the canopy portion 20 and keep the
inflatable tent 10 erect and in the "use" position. Further, the
redundant airbeam design significantly improves the strength of the
structure, making possible the use of lower air pressure.
[0033] Each frame 12 or redundant airbeams 13a, 13b are made from
two sheets of dimensionally stable synthetic fabric. In the
preferred embodiment, the two dimensionally stable synthetic fabric
sheets are joined together at a top seam 38b, FIG. 2 with
top-stitching, giving a finished appearance to the outside of the
tent. Thereafter, the two dimensionally stable synthetic sheets are
then joined together at a bottom seam 38a with a basting stitch and
edge binding. Finally, the two dimensionally stable synthetic
sheets are joined together at a midseam 24 with double stitching
through the sewing flaps 18. However, in alternative embodiments,
other types of joining may be used. For example, RF welding may be
used to join the sheets together. RF welding will allow the
redundant airbeams 13a, 13b to be welded flat in one operation.
This joining construction, being airtight, could also obviate the
need for bladders 36a and 36b. A single wall design has the benefit
of being more lightweight and easy to manufacture, however, in the
case of a puncture, it is beneficial to have bladders, which can
easily be repaired or replaced.
[0034] The sewing flap 18 is preferably sewn to the midseam 24 of
the frame 12. The sewing flap 18 is preferably an oxford nylon or
polyester, but a variety of fabrics could be used. In the preferred
embodiment, the sewing flap 18 has a first flap portion 26 and a
second flap portion 28 that are separate elements sewn to the
midseam 24 between the inner airbeam 13a and the outer airbeam 13b
of the frame 12. The first flap portion 26 and the second flap
portion 28 are operatively attached to the midseam 24 at first ends
34. Second ends 32 of the first flap portion 26 and the second flap
portion 28 are used to connect the plurality of panels 30 of the
canopy portion 20. In an alternative embodiment, the sewing flap 18
can have any number of flaps for attaching to any number of the
plurality of panels 30.
[0035] In the preferred embodiment, the sewing flap 18 is double
stitched to the midseam 24 of the frame 12 and/or the canopy
portion 20 for added strength. However, in alternative embodiments,
other types of joining may be used. For example, RF welding may be
used to join the sewing flap 18 to the midseam 24 of the frame 12
and/or the canopy portion 20 for added strength and
simplification.
[0036] The top seam 38b may be top-stitched or welded on an inside
circumference of the outer airbeam 13b protruding inside the outer
airbeam 13b. The bottom seam 38a may be extending from an outer
circumference to produce an outward extending overlap that is edge
binded.
[0037] The first flap 26 and the second flap 28 of the sewing flap
18 allow the adjacent plurality of panels 30 to be sewn to the
redundant airbeams 13a, 13b and matched edge-to-edge with notches
for proper alignment. This is a significant benefit during
production. Also, the sewing flap 18 may be of a heavier material,
which strengthens the midseam 24 of the redundant airbeams 13a, 13b
without adding a significant amount of weight. Further, since the
adjacent plurality of panels 30 may be sewn with standard
top-stitching or flat-felled stitching, a finished look with taped
seams is more easily achieved.
[0038] FIGS. 1 and 3 show the valve interface 14, which is used for
receiving air from an external source, such as a pump. The valve
interface 14 is in fluid connection with the bladders 36a, 36b in
the redundant airbeams 13a, 13b of each of the frames 12 by means
of an air supply line 16. The air supply line 16 is preferably a
3/8.sup.th inch outside diameter urethane tubing, however, other
flexible tubing may be substituted. The air supply line 16,
preferably, runs along the inside of the inflatable tent 10 to each
of the frames, although this is not a limitation of the present
invention as each frame could have a valve interface although this
would make inflating the frame(s) more time consuming but on the
other hand, insulate the failure of one frame 12 from a good frame
12.
[0039] The valve interface 14 has an inflation valve 40. The
inflation valve 40 is preferably a Halkey Roberts #147-ACUR
straight connector with a Colder Products APC model quick
disconnect with internal shut-off, however, other one-way valves
may be substituted. The inflation valve 40 of the valve interface
14 receives air from an external source. The incoming air travels
to the bladders 36a, 36b via the air supply line 16.
[0040] The valve interface 14 also typically has a deflation valve
42 for deflating the bladders 36a, 36b. The deflation valve 42 is
preferably a Carmo (Cosmos-Kabar) #3-730 deflation valve although
other deflation valves may be substituted.
[0041] In a double frame embodiment as the one shown in FIG. 1, the
valve interface 14, FIG. 3, has a first end 44 and a second end 46
in fluid connection with the air supply line 16. The first end 44
is in fluid connection with one of the frames 12, and the second
end 46 is in fluid contact with another of the frames 12.
[0042] Air is received through the inflation valve 40 and exhausted
through the deflation valve 42. The valve interface 14 and the air
supply line 16 provide an integral system of inflating and
deflating each of the bladders 36a, 36b forming the redundant
frames(s) 12.
[0043] The valve interface 14 is preferably mounted to the inside
of the inflatable tent 10, however, the inflation valve 40 and the
deflation valve 42 extend through and to the outside of the
inflatable tent 10. The valve interface 14 precludes moisture from
entering the air supply line 16 and the bladders 36a, 36b, and also
may be fitted with a conventional well known moisture filter, such
as an open celled urethane foam, to further preclude contamination
from entering the air supply line 16 and the bladders 36a, 36b. In
the preferred embodiment, when the tent is stored, the deflation
valve 42 is left in the "open" position to facilitate evaporation
of any moisture in the valve interface 14 and the bladders 36a,
36b.
[0044] In the preferred embodiment, the valve interface 14 has a
body 48 that is made from urethane coated ripstop nylon, however,
other airtight materials may be substituted. The body 48 is
airtight and RF welded or heat-sealed, and serves as an inflation
manifold and is in fluid connection with the inflation valve 40,
the deflation valve 42, the first end 44, and the second end 46 and
the air supply line 16. The RF welding or heat sealing of the body
48 of the valve interface 14 is an economical, precise, and
high-strength method of joining the fabric pieces, tubing, and
valves in a single operation. Urethane coated nylon fabric is
preferred for weldability, airtightness, and functionality in a
wide range of temperatures. Urethane tubing and valves are
similarly desirable and provides for proper seal with the
urethane-coated fabric. The urethane tubing is sealed into the body
48 to allow an airtight connection of a standard barbed coupling.
In that way, the connecting tubes, hoses, and valves may be any of
a variety of materials depending on the performance characteristics
desired.
[0045] FIGS. 1 and 4 show an integrated pump 50 used to inflate the
bladders 36a, 36b of the inflatable tent 10 through the valve
interface 14 and the air supply line 16. Unfortunately, the human
lung cannot provide enough air pressure to appropriately inflate
the tent bladder. Accordingly, a pump of some sort must be used to
in effect amplifier the long pressure. Since the lungs can only
comfortably provide approximately one half pounds of pressure,
approximately 5 or more pounds (5 to 10 preferably) are required to
properly fill a tent bladder. A pump of some sort is thereby needed
to amplify the air pressure available from a user's lungs to fully
inflate the frame(s) 12 with enough air pressure.
[0046] Conventional foot pumps have been used to inflated objects
such as the inflatable tents 10; however, they are too bulky to
carry on a hiking or camping trip in the wilderness. These
conventional pumps typically use metal return springs to replenish
air volume after being compressed, whereas the integrated pump 50
is a novel approach that obviates the need for bulky springs or
convolutes found in conventional pumps. The integrated pump 50 is
small, flexible, foldable, and compact. The integrated pump 50 is
inflated by the user's lungs after each compression.
[0047] The integrated pump 50 is made from an airtight fabric, such
as urethane coated ripstop nylon. The fabric is made into a pouch
52. The pouch 52 is airtight and RF welded or heat-sealed. The
pouch 52 is an inflation manifold and is in fluid connection with
an input hose 54 and an output hose 56.
[0048] The input hose 54 and the output hose 56 are attached to the
pouch 50 of the integrated pump 50 using tube seals and are sealed
airtight. The input hose 54 is preferably a 1/2 inch outside
diameter urethane tubing, such as #200-1307 from New Age
Industries. The input hose 54 has an oral inflation valve 60, which
is inserted into an end of the input hose 54. The oral inflation
valve 60 is preferably a Halkey-Roberts #720 ROA oral inflation
valve. The oral inflation valve 60 is inserted into an end of the
input tube 54 and into the pouch 52 of the integrated pump 50. The
oral inflation valve 60 is flexible.
[0049] The output hose 56 is preferably an 11/16.sup.th inch
outside diameter urethane tubing, such as #200-1615 from New Age
Industries. The output hose 56 has another Halkey-Roberts #720 ROA
oral inflation valve inserted into the same end as a Colder
Products model APC quick disconnect which connects to the interface
valve 40 or the manifold for an inflatable object. A manual
inflation valve 58 is also attached to the pouch 50. The manual
inflation valve 58 is preferably a Carmo #3-115 inflation valve
however, other similar valves are available from Halkey Roberts and
others. The manual inflation valve 58 is sealed air-tight to the
pouch 52.
[0050] The manual inflation valve 58 provides a dual function of
offering an interface for an ordinary tapered fitting common to
inflatable boat and beach ball pumps, and also a means of allowing
the interior of the integrated pump 50 to dry out when not in use.
Moisture from the lungs will collect inside the integrated pump 50
during use and without a means for drying it out, the moisture
could lead to mildew and premature deterioration of the fabric that
forms the integrated pump 50.
[0051] The pouch 52 is best constructed by RF welding or heat
sealing which provides an economical, precise and high-strength
method of joining the fabric pieces, tubing and valve in a single
operation. Urethane coated nylon fabric is preferred for
weldability, airtightness, and functionality in a wide range of
temperatures. Urethane tubing and valves are similarly desirable
and may be required for proper seal with the urethane-coated
fabric. The urethane tubing is sealed into the fabric pouch 52 to
allow the connection of a standard barbed coupling. In that way,
the input hose 54 and the output hose 56 may be any of a variety of
materials depending on the performance characteristics desired.
[0052] To use the integrated pump 50, the user first connects the
output hose 56 to the inflation valve 40 of the valve interface 14
or any manifold on an inflatable object. In this embodiment, the
integrated pump has an integral check valve in the output hose 56,
however, the manifold or valve (such as valve 14) of the inflatable
object could have its own check valve.
[0053] There are several methods of operating the integrated pump
50. In the preferred embodiment, the pouch 52 of the integrated
pump 50 is placed under the ball of the user's foot, and the user
blows into the input hose 54 which is connected to the oral
inflation valve 60. A good rhythm of blowing into the oral
inflation valve 60 of the integrated pump 50, and then rocking the
foot forward to compress the pouch 52 of the integrated pump 50 is
preferred. The process or method is repeated, which will provide
for highly efficient pumping. Another method is for the user to
compress the pouch 52 of the integrated pump 50 in his/her hand,
which allows the user to stand up while using the integrated pump
50.
[0054] In summary, the user blows into the oral inflation valve 60
to fill the pouch 52 of the integrated pump 50. The oral inflation
valve 60 is a one-way valve. The pouch 52 is then compressed to
create the 5 to 10 psi necessary to sufficiently inflate the
bladders 36a, 36b of the inflatable tent 10. This is significant
because the average person cannot blow much more than 2 psi whereas
5 or more psi are required to properly inflate the bladders 36a,
36b of the inflatable tent 10. The user's lungs behave as the
return spring would in an ordinary foot pump, replenishing the air
inside the pouch 52 of the integrated pump 50. The integrated pump
50 offers a very lightweight, and simple method of amplifying
pressure.
[0055] The integrated pump 50 also helps prevent moisture from the
air blown into the integrated pump 50 from entering the inflatable
tent 10. The oral inflation valve 58 may be opened when the
integrated pump 50 is not in use to allow this moisture to
evaporate.
[0056] FIG. 5 shows a soft pump 80, which may be used to input air
into the inflatable tent 10 or other inflatable device in lieu of
the integrated pump 50 previously described. Conventional foot
pumps for inflatable sporting goods products are heavy and clumsy
objects made of plastic or metal components. The soft pump 80 is
made entirely of flexible, rubbery components. The benefits of this
design are that it is lighter, friendlier, more compactable, and
more durable than conventional designs.
[0057] The soft pump 80 has a convoluted shape and is made of
blow-molded Santoprene, which is a rugged versatile material common
in shock boots and CV boots for vehicles. The soft pump 80 has a
body 82 that is molded with two orifices 84, 86 therein. A first
orifice 84 has a flange for mounting and adhering a Vernay rubber
butterfly valve. A second orifice 86 is a smooth bore in which an
output hose 88 of the soft pump 80 is operatively attached. The
bore in the second orifice 86 is aligned with a recessed channel
that circumscribes the part. The output hose 88 may be wrapped
around the part in this channel. An end of the output hose 88 has a
quick disconnect fitting 90 attached thereto. The output hose 88 is
connected to the inflation valve 40 of the valve interface 14 or
other manifold for an inflatable device.
[0058] The properties of the Santoprene and geometry of the
convolutes cause them to behave as their own return spring. No
separate metal spring or foam insert is needed to get the pump to
return to its original shape after being compressed.
[0059] In order to blow mold the soft pump 80 in a seamless way,
without puncturing the visible surfaces of the pump, horizontal
injection pins are used through the input and output openings 84
and 86, respectively. In alternative embodiments, the pump could
have an additional opening, which could afterwards be covered and
sealed by a separate piece of material such as a strap.
[0060] A base 92 of the soft pump 80 has a tread pattern for
helping to keep the pump in place during use. A strap (not shown)
is mounted to a bottom of the soft pump 80 and wraps around the
pump and secures to itself to keep the soft pump 80 compressed for
efficient storage and travel.
[0061] FIGS. 8-10 illustrate another embodiment of a foot pump 110
in accordance with one feature of the present invention. The foot
pump is made of a lightweight collapsible material, such as
urethane coated fabric 112 and is filled with reticulated foam 114.
The fabric material 112 this selected such that it can be easily
assembled such as by sewing, gluing, RF welding and the like. The
foam features very large open cells and contains approximately 97%
air. The foam acts as the return spring for the pump 110. The pump
110 can easily be stored in the tent itself or placed into a stuff
sack and carried to remote locations.
[0062] The preferred embodiment of the pump 110 includes a number
of bellows or sections 116. Although in the preferred embodiment
includes three sections 116, this is not a limitation of the
present invention as one or more sections will suffice. The bellows
prevents outward deflection of the pump 110 when compressed. This
assures that all of the air found in the bellows will be
transferred out of the bellows.
[0063] In order to effectively use the pump of the present
invention, a valve 118 must be provided which serves the function
of allowing the bellows to quickly fill with air. The filling with
air must be nearly instantaneous otherwise the user will have to
wait an inordinate amount of time for the bellows to refill before
the air can be squeezed or compressed out of the pump again.
[0064] Accordingly, the present invention solves this problem by
providing a unique valve 118. As shown in greater detail in FIG.
10, the valve 118 includes a traditional quick dump valve 120 such
as available from Hulkey Roberts as dump valve 650AD combined with
the valve segment 122 which forms a check valve. The umbrella valve
segment 122, such as available from the Vernay company, interfaces
with valve platform 124. The tip or protrusion 126 of the valve
segment 122 is inserted into opening 128 of the valve platform 124.
Lastly, a semi-rigid ring 130 is provided against the bottom region
134 of the fabric material 132 to which the valve 118 is
mounted.
[0065] To assemble a valve 118 according to the present invention,
the dump valve 120 is RF welded or otherwise attached to the top
surface 136 of the fabric or other material 132 to which the valve
118 is mounted. Next, the umbrella valve segment 122 is mated with
the valve platform 124. Finally, a semi rigid ring 130 having
approximately the same as or slightly greater diameter than the
valve 122 is provided and RF welded or otherwise attached to the
under surface 134 of the fabric or other material 132 to which the
valve 118 is attached. The semi rigid ring 130 serves to make sure
that the fabric 132 remains open in the area of the valve 118 to be
sure that the air can easily enter the valve 118 which serves as
the refill valve. The valve support number 124 and the ring 130 are
typically die cut pieces from sheet urethane or other similar
material. Accordingly, the valve 118 allows the air to be squeezed
out of the bellows into a tube or other similar device 138, FIG. 1,
while the valve number 122 prevents the air from escaping the valve
118 when the bellows 112 or compressed.
[0066] FIG. 6a shows the roll-up stuff sack 62, wherein the user is
stuffing the inflatable tent 10, the valve interface 14, the
integrated pump 50, and the soft pump 80 into a sack pouch 64. The
sack pouch 64 is large enough to hold the previously listed items.
After the items are placed in the roll-up stuff sack 62, a top 66
is fastened to a body 68. The fastener may be hooks and loops, a
zipper, a snap and receiver, clasps, straps, ladder locks, or any
similar device.
[0067] The roll-up stuff sack 62 is then rolled up into a tight,
compact package as shown in FIG. 6b. FIG. 6c shows a roll-up stuff
sack 62 in a rolled up or compressed position. In the rolled up
position, the roll-up stuff sack 62 may hold the inflatable tent
10, the valve interface 14, the integrated pump 50, and the soft
pump 80 for easy transport and carry.
[0068] Webbing straps 72 have hooks and loops 78, FIG. 6d, at their
ends for attaching to each other and for holding the roll-up stuff
sack 62 together after rolling. Buckles 70 are used to compress or
tightly package the items in the roll-up stuff sack 62. Tightening
the webbing straps 72 compresses the roll-up stuff sack 62.
Specifically, the user grasps at a pocket 76 and rolls the roll-up
stuff sack 62 towards the tapered end, securing the hooks and loops
78 to hold the roll together. The user then clips the buckles 70
and tightens the roll by pulling the webbing straps 72. To remove
the items, the process is reversed.
[0069] The roll-up stuff sack 62 may have mesh panels 74. The mesh
panels 74 allows the contents to breathe when the roll-up stuff
sack 62 is rolled out. The webbing straps 72 at either end of the
roll-up stuff sack 62 facilitate hanging. The same webbing straps
72 that keep the roll-up stuff sack 62 in the rolled up position as
shown in FIG. 6a may also be used to clip to itself to form a
larger loop for hanging the roll-up stuff sack 62 from a tree
branch, line, or another structure as shown in FIG. 6d. The roll-up
stuff sack 62 may hold the items previously described after use so
that they may be hung and the items allowed to dry out. Further,
the roll-up stuff sack 62 may be used to dry out clothing or other
items capable of fitting therein. The mesh panels 74 may be made
black in color and made of ripstop nylon panels and if the roll-up
stuff sack 62 is hung in direct sunlight, it absorbs UV from the
sun for quick drying.
[0070] The pocket 76 at a bottom end of the roll-up stuff sack 62
provides a location for tent stakes, a patch kit and other parts.
When full, the pocket 76 facilitates the rolling up of the roll-up
stuff sack 62.
[0071] In the preferred embodiment, the roll-up stuff sack 62 is
made from nylon ripstop, nylon mesh, and nylon flat webbing;
however, other materials may be used while retaining the spirit and
concept of this invention. These materials have been chosen for
their excellent durability and weather resistance. The roll-up
stuff sack 62 has double stitching at all integral seams, and
back-tacking is used over high-stress areas such as the pocket 76
corners, and edge binding to conceal all raw edges.
[0072] In summary, the roll-up stuff sack 62 allows the user to
pack the inflatable tent 10 and its components therein in a very
tight bundle with relative ease. The roll-up stuff sack 10 may also
be hung inside the inflatable tent 10 or outside in the sun and
used to dry clothing since its dark fabric absorbs UV and its mesh
panel 74 allows the contents to breathe and moisture to escape.
[0073] As mentioned above, the present invention is not intended to
be limited to a system or method which must satisfy one or more of
any stated or implied object or feature of the invention and should
not be limited to the preferred, exemplary, or primary
embodiment(s) described herein. Modifications and substitutions by
one of ordinary skill in the art are considered to be within the
scope of the present invention which are not to be limited except
by the allowed claims and equivalents thereto.
* * * * *