CA2292777A1 - Buffer double air cushion - Google Patents
Buffer double air cushion Download PDFInfo
- Publication number
- CA2292777A1 CA2292777A1 CA002292777A CA2292777A CA2292777A1 CA 2292777 A1 CA2292777 A1 CA 2292777A1 CA 002292777 A CA002292777 A CA 002292777A CA 2292777 A CA2292777 A CA 2292777A CA 2292777 A1 CA2292777 A1 CA 2292777A1
- Authority
- CA
- Canada
- Prior art keywords
- air cushion
- outer air
- pressure
- assembly
- buffer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
- A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/04—Ski or like boots
- A43B5/0405—Linings, paddings or insertions; Inner boots
- A43B5/0407—Linings, paddings or insertions; Inner boots inflatable
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
A buffer double air cushion adaptable to a shoe vamp includes an outer air cushion (1) and an inner air cushion (2). The outer air cushion (1) and the inner air cushion (2) are inflated to a different inner pressure. An upper surface of both the outer (1) and inner (2) air cushion are curved down to two sides with non-specific curvature. So the buffer double air cushion has a good 3D curvature to closely fit a foot wearing it, and excellent buffer and shock-absorbing function by means of air or gas pressure.
Description
TITLE: BUF~R DOUBLE AIR CUSHION
BACKGROUND OF THE INVENTION
Common conventional shoe vamps have an inner layer of elastic foam rubber or sponge is added under an outer layer of leather, in order to produce comfortable and shock-absorbing function in wearing. In truth, the inner layer of foam rubber has limits in its elasticity and the thickness of the layer so that the capacity of buf-fer and shock-absorbing for the conventional shoe vamps is not so ideal to meet practical use An inflatable air cushion for a shoe vamp has been disclosed by the same applicant of this invention, but it has only a 2D structure not so good as to produce ideal shock-absorbing function.
SUMMARY OF THE INVENTION
In view of the disadvantage of the conventional shoe vamp air cushions, this invention has been devised to offer a buffer double air cushion adaptable to a shoe vamp.
The main feature of the invention is an outer air cushion and an inner air cushion disposed in the outer air cushion, respectively having different inner pres-sure for forming a soft outer layer so as to give com-. fortable feeling and close fitting on a foot in wearing.
BRIEF DESCRIPTION OF DRAWINGS
This invention will be better understood by refer-ring to the accompanying drawings, wherein:
Figure 1 is side view of a buffer double air a cu-shion in the present invention, adapted to a shoe vamp Figure 2 is an upper view of Fig.
1:
Figure 3 is right side view of Fig. 2~
a Figure 4 is cross-sectional view of line 4 -a 4 in Fig. 2.
Figure 5 is cross-sectional view of line 5 -a 5 in Fig. 2~
Figure 6 is side view of a second preferred em-a bodiment of buffer double air cushion in the present a invention, ad apted o a shoe vamp:
t Figure ? is upper view of Fig. 6:
an Figure 8 is right side view of Fig. 6:
a Figure 9 is cross-sectional view of line 9 -a 9 in Fig. 7~
Figure 10 is cross-sectional view of line 10 -a 10 in Fig. 7:
Figure 11 is cross-sectional view of inflating a steps for the buffer double air cushion in the present invention Figure 12 is side view of a third preferred em-a bodiment of r double air cushion in the present an buffe invention Figure 13 is an upper view of Fig. I2~
Figure 14 is a right side view of Fig. 12.
Figure 15 is a cross-sectional view of line 15 -15 in Fig. 13~ and, Figure 16 is a cross-sectional view of line 16 -16 in Fig. 13.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
A buffer double air cushion in the present inven-tion is to be adapted to a shoe vamp, so functions it should have are close fitting on a foot, and buffer and shock-absorbing function, not the same as that adapted to a shoe heel. Its thickness is rather thin, its upper surface has to be of a very similar curvature to a foot.
In addition, the area surrounded by the peripheral hol-low edge is smaller than the surface area of the air cu-shion, permitting at least one surface or two surfaces have a swelled-up 3D arch shape. Figs. 1 - 5 show a first preferred embodiment of a buffer doubly air cu-shion, which includes an outer air cushion 1, and at least one inner air cushion 2 disposed in the outer air cushion 1.
The outer air cushion 1 has a plurality of recess-ed holes 11 or recessed grooves 12 in an upper surface and/or a lower surface, but the recessed holes or the recessed grooves 12 may be omitted (as.shown in Figs. 12 - 16). Further, the outer air cushion 1 has at least one side open for the inner air cushion 2 to be inserted and sealed up after the inner air cushion 2 is disposed therein.
The inner air cushion 2 to be disposed in the outer air cushion 1 has an inner pressure higher than that in the outer air cushion 1, and a plurality of re-cessed holes 21 or recessed grooves 22 formed in at least one surface or two surfaces. The depth of the re-cessed holes 21 and the recessed grooves 22 is shorter than those 11 and 12 of the outer air cushion 1. The width of the recessed holes 21 or the recessed grooves 22 is at least the same as the outer diameter or width of the holes 11 or the grooves 12 of the outer air cu shion 1.
Further, the inner air cushion 2 has a layer of glue or adhesive attached on an upper surface to adhere a contacting portion of an inner surface of the outer air cushion 1 when the inner air cushion 2 is disposed in the outer air cushion, with the open side of the outer air cushion 1 sealed up with heating. Then this Joule air cushion has a single thickness but with two different inner pressures.
Figs. 6 - 9 show a second preferred embodiment of a buffer double air cushion in the present invention, WO 98/57802 PCT/US97l16670 wherein an outer air cushion 1 and an inner air cushion 2 are combined together, with recessed holes 11 or re-cessed grooves 12 of the outer air cushion 1 fitting in recessed holes 21 or recessed grooves 22 of the inner air cushion 2, and with those holes 12 and 21 or grooves 12 and 22 of both the air cushions 1 and 2 firmly engas-ing one another after the inner air cushion 2 is inflat-ed with higher pressure than that of the outer air cu-shion 1.
The inner pressure of the outer air cushion 1 is effected by a hollow passageway 20 attached on the same cushion 1. Then the outer air c:ahion 1 is inflated through the passageway 10 after its peripheral edge is sealed up. The inner air cushion 2 also has a hollow passageway 20 for filling a gas in its interior to a preset pressure. In practical process, the inner air cu-shion 2 inflated in advance is inserted in the outer air cushion 1, and then the outer air cushion 1 is sealed and inflated.
Another method of inflating different inner pres-sure in the outer and the inner air cushion 1 and 2 is shown in Fig. 11. Then the hollow passageway 10 of the outer air cushion 1 and that 20 of the inner air cushion 2 are made coaxial. At first, the same pressure is in-Elated in both the outer and the inner air cushion 1 and 2, and then the passageway 10 of the outer air cushion 1 is sealed up. In this condition, the inner pressure of both the outer and the inner air cushion 1 and 2 are the same because of the passageway 20 still open to permit the inner air cushion 2 communicate with the outer air cushion 1. Next, the outer air cushion 1 is compressed to force gas therein to flow into the inner air cushion 2 not compressed through the passageway 20, resulting in a higher pressure in the inner air cushion 2 than that in the outer air cushion 1. Then the passageway 20 is sealed up with the passageway 10, finishing the process.
The finished buffer double air cushion has the outer air cushion 1 being soft owing to lower inner pre sure than the inner air cushion 2, which is harder than the outer air cushion 1 owing to high inner pressure.
When at first the outer air cushion 1 is sealed with the inner pressure 20 lbs, the inner pressure of the inner air cushion 2 is also of the same pressure, 20 lbs, as both the two air cushions 1 and 2 communicate with each other. Then if the outer air cushion 1 is compressed to force its inner surface contact the upper surface of the inner air cushion 2, 10 lbs pressure of the outer air cushion 1 may be moved into the inner air cushion 2, with the pressure of the outer air cushion 1 becoming 10 lbs, and with the pressure of the inner air cushion 2 becoming 30 lbs. Then the passageway 20 of the latter is sealed to keep the different pressure for the both 1 and 2.
However, when the buffer double air cushion is compressed, the inner air cushion 2 only receives 20 lbs pressure because the outer air cushion 1 have 10 lbs, with the original 30 lbs pressure of the inner one sub-tracted 10 lbs. Therefore, the whole structural load is not increased, but as to buffer and shock-absorbing effect, the outer layer of the double air cushion is soft and comfortable and the inner layer is a little harder than the outer layer with different buffer ef-fec~.
Thus the buffer double air cushion has a special structure of different inner pressures, but with a single height, which has not yet been found in conven-tional air cushions. In addition, the interior of both the inner and the outer air cushion 1 and 2 may be fill-ed with air, a low-percolating large particle gas such as SF6, C2F6, etc., a fluid, a semi-fluid or a liquid.
While the preferred embodiments of the invention have been described above, it will be recognized and un-stood that various modifications may be made therein and the appended claims are intended to cover all such modi-- 25 fications which may fall within the spirit and scope of _?_ the invention.
_g_
BACKGROUND OF THE INVENTION
Common conventional shoe vamps have an inner layer of elastic foam rubber or sponge is added under an outer layer of leather, in order to produce comfortable and shock-absorbing function in wearing. In truth, the inner layer of foam rubber has limits in its elasticity and the thickness of the layer so that the capacity of buf-fer and shock-absorbing for the conventional shoe vamps is not so ideal to meet practical use An inflatable air cushion for a shoe vamp has been disclosed by the same applicant of this invention, but it has only a 2D structure not so good as to produce ideal shock-absorbing function.
SUMMARY OF THE INVENTION
In view of the disadvantage of the conventional shoe vamp air cushions, this invention has been devised to offer a buffer double air cushion adaptable to a shoe vamp.
The main feature of the invention is an outer air cushion and an inner air cushion disposed in the outer air cushion, respectively having different inner pres-sure for forming a soft outer layer so as to give com-. fortable feeling and close fitting on a foot in wearing.
BRIEF DESCRIPTION OF DRAWINGS
This invention will be better understood by refer-ring to the accompanying drawings, wherein:
Figure 1 is side view of a buffer double air a cu-shion in the present invention, adapted to a shoe vamp Figure 2 is an upper view of Fig.
1:
Figure 3 is right side view of Fig. 2~
a Figure 4 is cross-sectional view of line 4 -a 4 in Fig. 2.
Figure 5 is cross-sectional view of line 5 -a 5 in Fig. 2~
Figure 6 is side view of a second preferred em-a bodiment of buffer double air cushion in the present a invention, ad apted o a shoe vamp:
t Figure ? is upper view of Fig. 6:
an Figure 8 is right side view of Fig. 6:
a Figure 9 is cross-sectional view of line 9 -a 9 in Fig. 7~
Figure 10 is cross-sectional view of line 10 -a 10 in Fig. 7:
Figure 11 is cross-sectional view of inflating a steps for the buffer double air cushion in the present invention Figure 12 is side view of a third preferred em-a bodiment of r double air cushion in the present an buffe invention Figure 13 is an upper view of Fig. I2~
Figure 14 is a right side view of Fig. 12.
Figure 15 is a cross-sectional view of line 15 -15 in Fig. 13~ and, Figure 16 is a cross-sectional view of line 16 -16 in Fig. 13.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
A buffer double air cushion in the present inven-tion is to be adapted to a shoe vamp, so functions it should have are close fitting on a foot, and buffer and shock-absorbing function, not the same as that adapted to a shoe heel. Its thickness is rather thin, its upper surface has to be of a very similar curvature to a foot.
In addition, the area surrounded by the peripheral hol-low edge is smaller than the surface area of the air cu-shion, permitting at least one surface or two surfaces have a swelled-up 3D arch shape. Figs. 1 - 5 show a first preferred embodiment of a buffer doubly air cu-shion, which includes an outer air cushion 1, and at least one inner air cushion 2 disposed in the outer air cushion 1.
The outer air cushion 1 has a plurality of recess-ed holes 11 or recessed grooves 12 in an upper surface and/or a lower surface, but the recessed holes or the recessed grooves 12 may be omitted (as.shown in Figs. 12 - 16). Further, the outer air cushion 1 has at least one side open for the inner air cushion 2 to be inserted and sealed up after the inner air cushion 2 is disposed therein.
The inner air cushion 2 to be disposed in the outer air cushion 1 has an inner pressure higher than that in the outer air cushion 1, and a plurality of re-cessed holes 21 or recessed grooves 22 formed in at least one surface or two surfaces. The depth of the re-cessed holes 21 and the recessed grooves 22 is shorter than those 11 and 12 of the outer air cushion 1. The width of the recessed holes 21 or the recessed grooves 22 is at least the same as the outer diameter or width of the holes 11 or the grooves 12 of the outer air cu shion 1.
Further, the inner air cushion 2 has a layer of glue or adhesive attached on an upper surface to adhere a contacting portion of an inner surface of the outer air cushion 1 when the inner air cushion 2 is disposed in the outer air cushion, with the open side of the outer air cushion 1 sealed up with heating. Then this Joule air cushion has a single thickness but with two different inner pressures.
Figs. 6 - 9 show a second preferred embodiment of a buffer double air cushion in the present invention, WO 98/57802 PCT/US97l16670 wherein an outer air cushion 1 and an inner air cushion 2 are combined together, with recessed holes 11 or re-cessed grooves 12 of the outer air cushion 1 fitting in recessed holes 21 or recessed grooves 22 of the inner air cushion 2, and with those holes 12 and 21 or grooves 12 and 22 of both the air cushions 1 and 2 firmly engas-ing one another after the inner air cushion 2 is inflat-ed with higher pressure than that of the outer air cu-shion 1.
The inner pressure of the outer air cushion 1 is effected by a hollow passageway 20 attached on the same cushion 1. Then the outer air c:ahion 1 is inflated through the passageway 10 after its peripheral edge is sealed up. The inner air cushion 2 also has a hollow passageway 20 for filling a gas in its interior to a preset pressure. In practical process, the inner air cu-shion 2 inflated in advance is inserted in the outer air cushion 1, and then the outer air cushion 1 is sealed and inflated.
Another method of inflating different inner pres-sure in the outer and the inner air cushion 1 and 2 is shown in Fig. 11. Then the hollow passageway 10 of the outer air cushion 1 and that 20 of the inner air cushion 2 are made coaxial. At first, the same pressure is in-Elated in both the outer and the inner air cushion 1 and 2, and then the passageway 10 of the outer air cushion 1 is sealed up. In this condition, the inner pressure of both the outer and the inner air cushion 1 and 2 are the same because of the passageway 20 still open to permit the inner air cushion 2 communicate with the outer air cushion 1. Next, the outer air cushion 1 is compressed to force gas therein to flow into the inner air cushion 2 not compressed through the passageway 20, resulting in a higher pressure in the inner air cushion 2 than that in the outer air cushion 1. Then the passageway 20 is sealed up with the passageway 10, finishing the process.
The finished buffer double air cushion has the outer air cushion 1 being soft owing to lower inner pre sure than the inner air cushion 2, which is harder than the outer air cushion 1 owing to high inner pressure.
When at first the outer air cushion 1 is sealed with the inner pressure 20 lbs, the inner pressure of the inner air cushion 2 is also of the same pressure, 20 lbs, as both the two air cushions 1 and 2 communicate with each other. Then if the outer air cushion 1 is compressed to force its inner surface contact the upper surface of the inner air cushion 2, 10 lbs pressure of the outer air cushion 1 may be moved into the inner air cushion 2, with the pressure of the outer air cushion 1 becoming 10 lbs, and with the pressure of the inner air cushion 2 becoming 30 lbs. Then the passageway 20 of the latter is sealed to keep the different pressure for the both 1 and 2.
However, when the buffer double air cushion is compressed, the inner air cushion 2 only receives 20 lbs pressure because the outer air cushion 1 have 10 lbs, with the original 30 lbs pressure of the inner one sub-tracted 10 lbs. Therefore, the whole structural load is not increased, but as to buffer and shock-absorbing effect, the outer layer of the double air cushion is soft and comfortable and the inner layer is a little harder than the outer layer with different buffer ef-fec~.
Thus the buffer double air cushion has a special structure of different inner pressures, but with a single height, which has not yet been found in conven-tional air cushions. In addition, the interior of both the inner and the outer air cushion 1 and 2 may be fill-ed with air, a low-percolating large particle gas such as SF6, C2F6, etc., a fluid, a semi-fluid or a liquid.
While the preferred embodiments of the invention have been described above, it will be recognized and un-stood that various modifications may be made therein and the appended claims are intended to cover all such modi-- 25 fications which may fall within the spirit and scope of _?_ the invention.
_g_
Claims (7)
1. An air cushion assembly comprising:
a) an inflatable outer air cushion;
b) an inflatable inner air cushion disposed within the outer air cushion;
c) the outer air cushion being inflated to a first pressure and the inner air cushion being inflated to a second pressure, the first pressure being lower than the second pressure to define a double buffered cushion assembly wherein the outer air cushion is softer than the inner air cushion for providing different buffering and shock-absorbing functions;
and d) the outer air cushion including an inner surface portion, the inner air cushion including an outer surface portion, and the inner and outer surface portions being secured together.
a) an inflatable outer air cushion;
b) an inflatable inner air cushion disposed within the outer air cushion;
c) the outer air cushion being inflated to a first pressure and the inner air cushion being inflated to a second pressure, the first pressure being lower than the second pressure to define a double buffered cushion assembly wherein the outer air cushion is softer than the inner air cushion for providing different buffering and shock-absorbing functions;
and d) the outer air cushion including an inner surface portion, the inner air cushion including an outer surface portion, and the inner and outer surface portions being secured together.
2. The air cushion assembly of claim 1 wherein the outer air cushion includes an open side for inserting and disposing the inner air cushion within the outer air cushion, and the open side being sealable after the inner air cushion is disposed within the outer air cushion.
3. The air cushion assembly of claim 1 further including a sealable hollow passageway for providing communication between the inner and outer air cushions.
4. The double air cushion assembly of claim 3 wherein the hollow passageway is of a coaxial configuration.
5. The air cushion assembly of claim 1 wherein the air cushion assembly is of an arch-shaped three dimensional configuration.
6. The air cushion assembly of claim 5 wherein the air cushion assembly is in the configuration of a shoe vamp.
7. The air cushion assembly of claim 1 wherein the outer air cushion includes a first wall having a plurality of first received portions formed therein, the inner air cushion includes a second wall having a plurality of second recessed portions formed therein, and the first and second received portions being disposed in engagement with each other.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/876,493 | 1997-06-16 | ||
| US08/876,493 US5902660A (en) | 1996-06-15 | 1997-06-16 | Double buffered air cushion assembly |
| PCT/US1997/016670 WO1998057802A1 (en) | 1997-06-16 | 1997-09-24 | Buffer double air cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2292777A1 true CA2292777A1 (en) | 1998-12-23 |
Family
ID=25367847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002292777A Abandoned CA2292777A1 (en) | 1997-06-16 | 1997-09-24 | Buffer double air cushion |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0988143A4 (en) |
| CN (1) | CN1106267C (en) |
| AU (1) | AU4486997A (en) |
| CA (1) | CA2292777A1 (en) |
| WO (1) | WO1998057802A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7334351B2 (en) * | 2004-06-07 | 2008-02-26 | Energy Management Athletics, Llc | Shoe apparatus with improved efficiency |
| CN102556800B (en) * | 2012-02-18 | 2013-10-16 | 浙江金中机电科技有限公司 | Multi-level buffer air cushion |
| CN107637905B (en) * | 2017-10-25 | 2024-03-12 | 烯旺新材料科技股份有限公司 | Physiotherapy shoes based on graphene technology |
| CN109480384A (en) * | 2018-12-29 | 2019-03-19 | 东莞市康诚鞋材有限公司 | A kind of double thickness air filled mattress sole and preparation method thereof |
| CN110101352A (en) * | 2019-05-17 | 2019-08-09 | 浙江立翔厨电科技有限公司 | A kind of dish-washing machine energy-saving electrothermic frequency converter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2028060A (en) * | 1935-09-07 | 1936-01-14 | Gilbert Eskell | Protector |
| GB792034A (en) * | 1956-06-18 | 1958-03-19 | Edward Washington Town | Improvements in cushioning insoles for shoes |
| US3640831A (en) * | 1969-12-15 | 1972-02-08 | Protective Pads Inc | Protective body pad |
| US4262046A (en) * | 1979-09-06 | 1981-04-14 | Eitel Frederick G | Lightweight protective structure |
| JPS56111666A (en) * | 1980-02-06 | 1981-09-03 | Yutaka Yoshikawa | Expanding thickening laminated sheet |
| DE3610849A1 (en) * | 1986-04-01 | 1987-10-08 | Karl Nitschmann | SHOE INSOLE |
| SE456917B (en) * | 1986-07-17 | 1988-11-14 | Karl Goesta Rosendal | TAPE FORMAT FILLING ELEMENT |
| US5253435A (en) * | 1989-03-17 | 1993-10-19 | Nike, Inc. | Pressure-adjustable shoe bladder assembly |
| US5669161A (en) * | 1990-02-26 | 1997-09-23 | Huang; Ing-Jing | Shock-absorbing cushion |
-
1997
- 1997-09-24 WO PCT/US1997/016670 patent/WO1998057802A1/en not_active Application Discontinuation
- 1997-09-24 CN CN97182220A patent/CN1106267C/en not_active Expired - Fee Related
- 1997-09-24 AU AU44869/97A patent/AU4486997A/en not_active Abandoned
- 1997-09-24 EP EP97943386A patent/EP0988143A4/en not_active Withdrawn
- 1997-09-24 CA CA002292777A patent/CA2292777A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1259902A (en) | 2000-07-12 |
| WO1998057802A1 (en) | 1998-12-23 |
| AU4486997A (en) | 1999-01-04 |
| EP0988143A4 (en) | 2004-04-07 |
| CN1106267C (en) | 2003-04-23 |
| EP0988143A1 (en) | 2000-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |