U.S. patent application number 11/337901 was filed with the patent office on 2007-07-26 for inflatable gas bag having auxiliary gas pockets.
Invention is credited to Cheng-Yung Chen, Hung-Pin Lai.
Application Number | 20070170084 11/337901 |
Document ID | / |
Family ID | 38284470 |
Filed Date | 2007-07-26 |
United States Patent
Application |
20070170084 |
Kind Code |
A1 |
Chen; Cheng-Yung ; et
al. |
July 26, 2007 |
Inflatable gas bag having auxiliary gas pockets
Abstract
An inflatable gas bag having auxiliary gas pockets is compose of
a plurality of gas pocket units, each of gas pocket units includes
a main gas pocket of bigger width and a plurality of auxiliary gas
pockets of smaller width. A welding line is located between a main
gas pocket and an auxiliary gas pocket, and between two auxiliary
gas pockets. The conduits are arranged on said welding lines in a
predetermined distance, through which gas in the main gas pocket
and a plurality of auxiliary gas pockets can be transferred. The
gas pocket units are isolated such that gas can not be transferred
between each other. In case any main or auxiliary gas pockets are
broken, gas could still be contained in other gas pockets units.
The present invention provides a plurality of auxiliary gas pockets
to absorb the pressurized gas from main gas pocket during impact
and therefore be able to protect articles from exterior impact more
effectively.
Inventors: |
Chen; Cheng-Yung; (Taipei,
TW) ; Lai; Hung-Pin; (Taipei, TW) |
Correspondence
Address: |
Cheng-Yung Chen
P.O.Box 29-313
Taipei
11699
TW
|
Family ID: |
38284470 |
Appl. No.: |
11/337901 |
Filed: |
January 24, 2006 |
Current U.S.
Class: |
206/522 ;
383/3 |
Current CPC
Class: |
B65D 81/052
20130101 |
Class at
Publication: |
206/522 ;
383/003 |
International
Class: |
B65D 81/02 20060101
B65D081/02; B65D 30/00 20060101 B65D030/00 |
Claims
1-8. (canceled)
9. An inflatable gas bag having auxiliary gas pockets comprising an
upper film a lower film; a plurality of gas pocket units which are
isolated so that gas can not be transferred between each other, and
side by side between each, and consist of a main gas pocket and a
plurality of auxiliary gas pockets; a welding line having conduits
sat between main gas pocket and auxiliary gas pocket and between
two auxiliary gas pockets; a gas inlet on one side of the
inflatable gas bag; a gas channel extended from the gas inlet and
connecting to each of main and auxiliary gas pockets , though which
gas can be entered; characterized in that the width of main gas
pocket is bigger than that of auxiliary gas pockets, therefore the
main gas pocket will be thicker than auxiliary gas pockets after
charged with gas, the main gas pocket will absorb the impact and be
compressed first, and the pressurized gas in the main gas pocket
will be pressed into auxiliary gas pockets via conduit when the
inflatable gas bag suffers from exterior impact.
10. The inflatable gas bag having auxiliary gas pockets as defined
in claim 9, wherein the width of main gas pocket is bigger than
auxiliary gas pockets at least 1 centimeter.
Description
BACKGROUND OF THE IVENTION
[0001] 1. Field of the Invention
[0002] The present invention is related to an inflatable gas bag
having auxiliary gas pocket and particularly to an gas bag that is
composed of a plurality of gas pocket units, each of gas pocket
units includes a main gas pocket of bigger width and a plurality of
auxiliary gas pockets of smaller width. The gas in the main gas
pocket and a plurality of auxiliary gas pockets can be transferred
through conduits. The inflatable gas bag of the present invention
is able to protect articles from exterior impact more
effectively.
[0003] 2. Brief Description of Related Art
[0004] Traditional device for protecting articles packaged therein
is bubble wrap. It is able to absorb exterior impact by a plurality
of uniform air pockets. The ability of absorbing impact is limited
because the air pockets are too small.
[0005] U.S. Pat. No. 6,149,002 and U.S. Pat. No. 6,415,920 disclose
a container having a wall member, a front panel, and a rear panel.
The rear panel, the front panel and the wall member is a unitary,
blow molded member including a generally rigid shell, and a
plurality of flexible membranes each of which has a periphery and a
surface. The flexible membranes are bonded to the generally rigid
shell. The surfaces of the flexible membranes are separated from
the generally rigid shell to form a plurality of unbounded areas
between the surfaces of the flexible membranes and the generally
rigid shell. Air is contained within the unbounded areas, thereby
forming a plurality of air pockets between the flexible membranes
and the generally rigid shell. Most of the air pockets may be
broken at the same time under severe mechanical shock when over
pressure build up in the bubbles.
SUMMARY OF THE INVENTION
[0006] An object of the present invention is to provide an
inflatable gas bag having auxiliary gas pockets which absorb the
high pressure gas in main gas pockets during impact, to avoid the
main gas pockets broken. Due to damping effect when gas is force to
flow from main gas pockets to auxiliary gas pockets through valve
in between, impact energy are dissipated more effectively.
[0007] Another object of the present invention is to provide an
inflatable gas bag having auxiliary gas pockets, which is able to
protect articles from exterior impact more effectively.
[0008] In order to achieve the preceding objects, the inflatable
gas bag having auxiliary gas pockets is compose of a plurality of
gas pocket units, each of which includes a main gas pocket of
bigger width and a plurality of auxiliary gas pockets of smaller
width, a main gas pocket is wider than an auxiliary gas pocket in a
predetermined width, a welding line is located between a main gas
pocket and a auxiliary gas pocket, and another welding line is
located between two auxiliary gas pockets, conduits are arranged on
said welding lines in a predetermined distance, through which gas
in the main gas pocket and a plurality of auxiliary gas pockets can
be transferred, a gas pocket unit is side by side with another, and
a welding line without any conduit is located between two of them,
said gas pocket units are isolated that gas can not be transferred
between each other, thereby, in case any main or auxiliary gas
pockets of the gas pocket units are broken, gas in other gas
pockets remain intact.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The detail structure, the applied principle, the function
and the effectiveness of the present invention can be fully
understood with reference to the following description and
accompanying drawings, in which:
[0010] FIG. 1 is a plan view of the obverse side of the inflatable
gas bag of the present invention which is uncharged with gas;
[0011] FIG. 2 is a plan view of the reverse side of the inflatable
gas bag of the present invention, uncharged with gas;
[0012] FIG. 3 is a sectional view illustrating both of the obverse
and reverse side of the inflatable gas bag along line 3-3 shown in
FIG. 1;
[0013] FIG. 4 is a plan view of the obverse side of the inflatable
gas bag of the present invention while gas is charging;
[0014] FIG. 5 is a fragmentary sectional view along line 5-5 shown
in FIG. 3 while gas is charging;
[0015] FIG. 6 is a fragmentary sectional view along line 5-5 shown
in FIG. 3 while gas is stops charging;
[0016] FIG. 7 is a perspective view of the present invention while
the inflatable gas bag is fully expanded by the charged gas;
and
[0017] FIG. 8 is a plan view illustrating another preferred
embodiment of present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0018] Referring to FIG. 1, the inflatable gas bag of the present
invention is composed of a plurality of gas pocket units 10. Each
of gas pocket units 10 includes a main gas pocket 11 having bigger
width and a plurality of auxiliary gas pockets 121, 122 having
smaller width. The two auxiliary gas pockets are shown in the
figure as example, and is not meant to limit the number of
auxiliary gas pockets for the invention. The width of the main gas
pockets 11 are 1.about.2 centimeters wider than auxiliary gas
pockets 121, 122. By way of example only, if a main gas pocket 11
is formed as three centimeters in width, the auxiliary gas pocket
121, 122 may be formed about two centimeters in width; or if a main
gas pocket 11 is formed as four centimeters in width, the auxiliary
gas pocket 121, 122 may be formed about three centimeters in width.
A welding line 31 is located between a main gas pocket 11 and first
auxiliary gas pocket 121,and another welding line 31 is located
between first auxiliary gas pocket 121 and second auxiliary gas
pocket 122. Conduits 30 are installed on welding lines 31 by a
distance, for example of 10.about.15 centimeters, such that gas in
the main gas pockets 11 and first and second auxiliary gas pockets
121, 122 can be interconnected through conduits 30. However, a gas
pocket unit 10 is side by side with another, and a welding line 32
is located in between, and there are no conduits be installed on
said welding line 32. The gas pocket units 10 are isolated and gas
can not be exchanged between each other. Thereby, when any main gas
pockets 11 or first or second auxiliary gas pockets 121, 122 are
broken, gas in which have left out, the else not broken gas pockets
units still have gas in it. Besides, each of gas pocket units 10
can be different in sizes and shapes to match up the articles to be
wrapped. There is a gas inlet 2 on side of the inflatable gas bag
1, a gas channel 14 extend from the gas inlet 2 and is connecting
to each of main and auxiliary gas pockets 11, 121, 122, and gas can
be entered though the gas channel 14. When the inflatable gas bag 1
is charged with gas from the gas inlet 2, gas will go along the gas
channel 14 to enter each of main and auxiliary gas pockets 11, 121,
122 and inflate them.
[0019] Referring to FIGS. 1, 2 and 3,the FIG. 2 shows the reverse
side of the inflatable gas bag 1 when it is uncharged with gas, and
the FIG. 3 illustrates a sectional view including the obverse and
reverse side of the inflatable gas bag 1 along line 3-3 shown in
FIG. 1. The inflatable gas bag 1 is composed of two films, upper
film 21 and lower film 22, which are made of plastic or similar
materials. The periphery of said films is pressed welding along
line 35 by high temperature, which seal up the inflatable gas bag 1
and be sure gas will not escape. Welding lines 31, 32, 35 are
formed by binding upper and lower films 21, 22 together using hot
press. The check valves of the gas pockets are composed of two
films, upper valve film 25 and lower valve film 26 of appropriate
length, which are placed between upper and lower films 21, 22. And
an anti-welding layer 33 locating in gas channel 14 is placed
between upper and lower valve films 25, 26. It is to avoid upper
and lower valve films 25, 26 binding together while the welding
line 36 is formed by hot press. The welding line 36 located at the
pocket inlet 45 of the gas pocket units 10 is formed by hot
pressing on films 21 and 22 too. In this way, said anti-welding
layer 33 allow gas charging though upper and lower valve films 25,
26 at pocket inlet 45 found in each main and auxiliary gas pockets
11, 121, 122.Still Referring to FIG. 1. There are welding spots 34
on the upper and lower valve films 25, 26. They are formed with
upper film 21, upper valve film 25 and lower valve film 26 stick
together by hot press, and can be a shape of circle or other else.
The upper and lower valve films 25, 26, anti-welding layer 33 and
welding spots 34 together act as check valves, which be able to
seal the pocket inlet 45 of each gas pocket units 10 when the
inflatable gas bag 1 is charged with gas, and gastight of gas
pocket units 10.
[0020] Further, folding lines 41, 42, 43, 44 are appropriately
located at each main and auxiliary gas pocket 11, 121, 122, in
order to allow bending of each main and auxiliary gas pockets 11,
121, 122, after the bag is charged with gas. Successive folding at
35, 41, 42, 43, 44 will form a closed envelope to protect article
inside against impact from any direction.
[0021] Referring to FIG. 4, when the inflatable gas bag 1 is
charged through the gas inlet 2 with gas, the gas will go along the
gas channel 14 and enter each of main and auxiliary gas pockets 11,
121, 122. Said welding spots 34 allow enter main and auxiliary gas
pockets 11, 121, 122 easily. Referring to FIGS. 5 and 6, which
illustrate a sectional view of charged main and auxiliary gas
pockets 11, 121, 122 along line 5-5 shown in FIG. 3. After
charging, the upper valve film 25 and the lower valve film 26 will
be pressed tightly toward upper film 21 by high pressure in main
and auxiliary gas pockets 11, 121, 122. The welding spots 34 bind
upper film 21, upper valve film 25 and lower valve film 26 together
by hot press. Therefore upper and lower valve films 25, 26 will be
pressed toward upper film 21 instead of the lower film 22. The
upper and lower valve films 25, 26, and upper film 21 are made of
plastic or similar film materials, which will close pocket inlet 45
and gastight each main and auxiliary gas pockets 11, 121, 122 while
upper and lower valve films 25, 26 are pressed toward upper film
21. Thereby, the main and auxiliary gas pockets 11, 121, 122
contain gas, and the welding spots 34 assist gastight effect.
[0022] Referring to FIG. 7, once each main and auxiliary gas
pockets 11, 121, 122 is full of gas and expanded after inflating
operation, the inflatable gas bag 1 can be transformed into a
three-dimensional bag by bending the folding lines 41, 42, 43, 44
respectively. Every main and auxiliary gas pockets 11, 121, 122
acts as wall to define a volume that articles can be contained and
to protect articles from exterior impact. After the inflating
operation, the gas channel 14 flattens again because there is no
gas contained. Thereby, the flattened gas channel 14 just covers
the opening 50 which is the entrance of the inflatable gas bag 1.
Because the width of main gas pocket 11 is bigger than first or
second auxiliary gas pockets 12l, 122, the main gas pocket 11 will
be thicker than first or second auxiliary gas pockets 121, 122
after charged with gas. When the inflatable gas bag 1 suffers from
exterior impact, the main gas pocket 11 will absorb the impact and
be compressed first, and the pressurized gas in the main gas pocket
11 will be pressed into first auxiliary gas pocket 121 via conduit
30, and the pressurized gas in the first auxiliary gas pocket 121
will then be pressed into second auxiliary gas pocket 122 via
conduit 30, and so on. The process will be continued until pressure
in first and second auxiliary gas pockets 121, 122 and main gas
pockets 11 is equalized. Therefore, the main gas pockets 11 could
avoid breaking during impact due to the release of the pressurized
gas into first and second auxiliary gas pockets 121, 122, and be
able to suffer higher exterior impact. Further, gas pocket units 10
are side by side with another, and welding lines 32 are located
between gas pocket units 10. The gas pocket units 10 are isolated
between each of them. Therefore when any one of gas pocket units 10
is broken, the other units still contain pressurized gas. And the
inflatable gas bag 1 is still capable of protecting articles from
exterior impact.
[0023] FIG. 8 illustrates another preferred embodiment of present
invention. A main gas pocket 11 accompany with only one auxiliary
gas pocket 12. In another word, each of gas pocket unit 10 includes
a main gas pocket 11 of bigger width and another auxiliary gas
pocket 12 of smaller width. Further, while the location of welding
lines 31, 32 is shifted, the shapes of main and auxiliary gas
pockets 11, 12, 121, 122 can be changed. Shapes of rectangle,
rhombus, circle . . . etc. can be arranged.
[0024] While the invention has been described with referencing to
preferred embodiments thereof, it is to be understood that
modifications or variations may be easily made without departing
from the spirit of this invention, which is defined by the appended
claims.
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