U.S. patent application number 11/372911 was filed with the patent office on 2007-09-13 for sleeping bag with air pockets.
Invention is credited to Young Chu.
Application Number | 20070209114 11/372911 |
Document ID | / |
Family ID | 38477419 |
Filed Date | 2007-09-13 |
United States Patent
Application |
20070209114 |
Kind Code |
A1 |
Chu; Young |
September 13, 2007 |
Sleeping bag with air pockets
Abstract
A sleeping bag includes a shell defining an enclosed heat
insulation space, a sleeping bag filler filling the heat insulation
space, and air bags that are provided inside the heat insulation
space. The heat insulation space includes a bottom portion and a
non-bottom portion. The bottom portion is adapted to support the
weight of a user of the sleeping bag. The air bags are positioned
in the bottom portion. The air bag includes an elongated air tube,
an air communication conduit, and an air plug. The air bags are
spaced from one another by a predetermined interval. The sleeping
bag filler fills the heat insulation space between the air bags.
The air bag may further include an air bag filler that is provided
inside the air tube. The air bags may be connected to form a single
sealed air space.
Inventors: |
Chu; Young; (Santa Fe
Springs, CA) |
Correspondence
Address: |
PARK LAW FIRM
3255 WILSHIRE BLVD
SUITE 1110
LOS ANGELES
CA
90010
US
|
Family ID: |
38477419 |
Appl. No.: |
11/372911 |
Filed: |
March 10, 2006 |
Current U.S.
Class: |
5/413AM |
Current CPC
Class: |
A47G 9/086 20130101 |
Class at
Publication: |
005/413.0AM |
International
Class: |
A47G 9/08 20060101
A47G009/08 |
Claims
1. A sleeping bag comprising: a) a shell comprising an enclosed
heat insulation space; b) a sleeping bag filler that is provided
inside the heat insulation space; c) one or more air bags that are
provided inside the heat insulation space; wherein each of the air
bags comprises a sealed air space that contains air.
2. The sleeping bag of claim 1, wherein the heat insulation space
comprises a bottom portion and a non-bottom portion, wherein the
bottom portion is adapted to support the weight of a user of the
sleeping bag, wherein the air bags are positioned in the bottom
portion.
3. The sleeping bag of claim 2, wherein each of the air bags
comprises an elongated air tube.
4. The sleeping bag of claim 3, further comprising a pump, wherein
the pump inflates the air bags.
5. The sleeping bag of claim 3, wherein each of the air bags
comprises an air communication conduit, and an air plug that plugs
the air communication conduit.
6. The sleeping bag of claim 1, wherein the air bags are spaced
from one another by a predetermined interval, wherein the sleeping
bag filler fills the heat insulation space between the air
bags.
7. The sleeping bag of claim 1, wherein the sleeping bag filler is
made of synthetic fiber, down, cotton or wool.
8. The sleeping bag of claim 1, wherein each of the air bags
further comprises an air bag filler that is provided in the sealed
air space.
9. The sleeping bag of claim 8, wherein the air bag filler is made
of synthetic fiber, down, cotton or wool.
10. A sleeping bag comprising: a) a shell comprising an enclosed
heat insulation space; b) a sleeping bag filler that is provided
inside the heat insulation space; c) one or more air bags that are
provided inside the heat insulation space; wherein the air bags are
connected whereby the air bags forms a single sealed air space that
contains air.
11. The sleeping bag of claim 10, wherein the heat insulation space
comprises a bottom portion and a non-bottom portion, wherein the
bottom portion is adapted to support the weight of a user of the
sleeping bag, wherein the air bags are positioned in the bottom
portion.
12. The sleeping bag of claim 10, wherein each of the air bags
comprises an elongated air tube.
13. The sleeping bag of claim 10, further comprising a pump,
wherein the pump inflates the air bags.
14. The sleeping bag of claim 10, wherein the air space comprises
an air communication conduit, and an air plug that plugs the air
communication conduit.
15. The sleeping bag of claim 10, wherein the air bags are spaced
from one another by a predetermined interval, wherein the sleeping
bag filler fills the heat insulation space between the air
bags.
16. The sleeping bag of claim 10, wherein each of the air bags
further comprises an air bag filler that is provided in the sealed
air space.
Description
BACKGROUND OF THE INVENTION
[0001] The invention relates to a sleeping bag. More particularly,
the invention is related to a sleeping bag that includes air
pockets in order to maximize heat insulation effects.
[0002] A sleeping bag is mainly used for situations where there are
little or no heating. Essential requirements for a sleeping bag are
that it should retain heat and provide thermal insulation, and
should still be light and small for easy packing and
transportation.
[0003] Sleeping bags by prior art include a fabric shell filled
with synthetic fibers or down. One disadvantage of sleeping bags by
prior art is that their insulation property is not uniform but
differs along the direction. Heat insulation property of a sleeping
bag is provided mainly by air contained in gaps between the
synthetic fibers or down feathers. The gaps are reduced in the
bottom portion of the sleeping bag since the bottom portion is
compressed by the weight of a user and becomes thin. For this
reason, a sleeping pad is usually used to provide extra insulation
between a user and the ground on which the user lies.
[0004] The insulation property is more important in the bottom
portion of a sleeping bag since heat loss may occur mostly through
heat transfer between the bottom portion of the sleeping bag and
the ground.
[0005] Therefore, there has been a need for a sleeping bag, which
has uniform insulation property in all directions, and even
strengthened insulation property for the bottom portion.
SUMMARY OF THE INVENTION
[0006] The present invention contrives to solve the disadvantages
of the prior art.
[0007] An objective of the invention is to provide a sleeping bag
that has uniform thermal insulation property in all directions.
[0008] Another objective of the invention is to provide a sleeping
bag that has strengthened thermal insulation property in a bottom
portion thereof.
[0009] In order to achieve the above objectives, the present
invention provides a sleeping bag that includes a shell defining an
enclosed heat insulation space, a sleeping bag filler that is
provided inside the heat insulation space, and one or more air bags
that are provided inside the heat insulation space.
[0010] Each of the air bags includes a sealed air space that
contains air.
[0011] The heat insulation space includes a bottom portion and a
non-bottom portion. The bottom portion is adapted to support the
weight of a user of the sleeping bag. The air bags are positioned
in the bottom portion.
[0012] Each of the air bags includes an elongated air tube.
[0013] The sleeping bag may include a pump that inflates the air
bags.
[0014] Each of the air bags includes an air communication conduit,
and an air plug that plugs the air communication conduit.
[0015] The air bags are spaced from one another by a predetermined
interval. The sleeping bag filler fills the heat insulation space
between the air bags.
[0016] The sleeping bag filler is made of synthetic fiber, down,
cotton or wool.
[0017] In another aspect of the invention, each of the air bags
further includes an air bag filler that is provide in the sealed
air space. The air bag filler is made of synthetic fiber, down,
cotton or wool.
[0018] In still another aspect of the invention, the air bags are
connected with one another so that the air bags forms a single
sealed air space that contains air.
[0019] The advantages of the present invention are: (1) the
sleeping bag has excellent heat insulation property in the bottom
portion since the bottom portion is not compressed by the weight of
a user; (2) the series of air bags structurally support the weight
of a user, and therefore the filler material does not collapse and
keep its insulation property thereby keeping the user warm; (3) the
air bags pre-filled with the filler provides more warmth; and (4) a
separate sleeping pad is not necessary.
[0020] Although the present invention is briefly summarized, the
fuller understanding of the invention can be obtained by the
following drawings, detailed description and appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] These and other features, aspects and advantages of the
present invention will become better understood with reference to
the accompanying drawings, wherein:
[0022] FIG. 1 is a perspective view of a sleeping bag according to
the present invention;
[0023] FIG. 2 is a cross-sectional view of the sleeping bag taken
along line II-II in FIG. 1;
[0024] FIG. 3 is a cross-sectional view similar to FIG. 2 and shows
a bottom portion and a nonbottom portion of the sleeping bag;
[0025] FIG. 4 is a perspective view of an air bag;
[0026] FIG. 5 is a cross-sectional view similar to FIG. 2 and shows
an air bag filler; and
[0027] FIG. 6 is a perspective view of a sleeping bag having
connected air bags.
DETAILED DESCRIPTION OF THE INVENTION
[0028] Referring to FIGS. 1 and 2, a sleeping bag 10 includes a
shell 12 defining an enclosed heat insulation space 14, a sleeping
bag filler 16 that is provided inside the heat insulation space 14,
and one or more air bags 18 that are provided inside the heat
insulation space 14.
[0029] Referring to FIG. 3, the heat insulation space 14 includes a
bottom portion 22 and a non-bottom portion 24. The bottom portion
22 is adapted to support the weight of a user of the sleeping bag
10. The bottom portion 22 is the portion that the weight of a user
of the sleeping bag 10 presses the sleeping bag filler 16. The air
bags 18 are positioned in the bottom portion 22. The air bags 18
resist the pressure applied by the weight of a user so that the
sleeping bag filler 16 filling the bottom portion is not
compressed. A zipper 32 is provided in the nonbottom portion 24 to
facilitate use and storage of the sleeping bag 10.
[0030] FIG. 4 shows that the air bag 18 includes a sealed air space
20 that contains air. The air bag 18 includes an elongated air tube
24. The air bag 18 includes an air communication conduit 30, and an
air plug 31 that plugs the air communication conduit 30.
[0031] Referring bag to FIG. 1, the sleeping bag 10 includes a pump
28 that inflates the air bags.
[0032] Referring back to FIG. 2, the air bags 18 are spaced from
one another by a predetermined interval a. The sleeping bag filler
16 fills the heat insulation space 14 between the air bags 18.
[0033] The sleeping bag filler 16 is made of synthetic fiber, down,
cotton or wool.
[0034] FIG. 5 shows another aspect of the present invention. In
this aspect, each of the air bags 18 further includes an air bag
filler 34 that is provided in the sealed air space 20. The air bag
filler 34 is made of synthetic fiber, down, cotton or wool.
[0035] FIG. 6 shows still another aspect of the invention. In this
aspect, a sleeping bag 36 includes a plurality of air bags 38 that
are connected with one another so that the air bags 38 form a
single sealed air space 40 that contains air. The sleeping bag 36
is shown without the sleeping bag filler 16 for ease of
illustration.
[0036] The air in the air bags 38 is communicated through
connecting pipes 42 that connect the air bags 38. Only one air
communication conduit 30 and only one air plug 31 is required for
the entire air bags 38.
[0037] Although the present invention has been described in
considerable detail with regard to the preferred versions thereof,
other versions are possible. Therefore, the appended claims should
not be limited to the descriptions of the preferred versions
contained herein.
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