CA2238842A1 - Shoe sole with cushioning element capable of ensuring forced air circulation in the inner section of the shoe - Google Patents
Shoe sole with cushioning element capable of ensuring forced air circulation in the inner section of the shoe Download PDFInfo
- Publication number
- CA2238842A1 CA2238842A1 CA002238842A CA2238842A CA2238842A1 CA 2238842 A1 CA2238842 A1 CA 2238842A1 CA 002238842 A CA002238842 A CA 002238842A CA 2238842 A CA2238842 A CA 2238842A CA 2238842 A1 CA2238842 A1 CA 2238842A1
- Authority
- CA
- Canada
- Prior art keywords
- sole
- shoe
- pumping
- air
- cushion
- 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
- 238000005086 pumping Methods 0.000 claims abstract description 22
- 239000004033 plastic Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 2
- 239000002991 molded plastic Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
- A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
- A43B7/082—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures the air being expelled to the outside
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/08—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined ventilated
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
This patent application concerns a moulded plastic sole with pliable pumping cushion which, as the person wearing the same walks, forces air into the shoe and through an evacuation chamber with which the sole is fitted and which is connected to the exterior by means of one or more breather holes.
Description
~ ~ CA 02238842 1998-0~-27 ,~
Shoe Sole with Cushioning Element Capable of Ensuring Forced Air Circulation in the Inner Section of the Shoe This patent application concerns a moulded plastic sole which is provided on its upper surface with a pliable cushion which also ensures forced ventilation of the inner section of the shoe as a result of the alternating pressure of the user's foot on the 5 same as he or she walks.
The sole in question is designed to ensure forced circulation of air in a closed shoe so that the foot can transpire properly.
It is common knowledge that in conventional closed shoes with plastic sole the foot does not transpire properly with the 0 risk of skin irritation and peeling; this becomes even more of a problem for those who tend to sweat heavily.
As a matter of fact this problem has already been faced with techniques which are undoubtedly more sophisticated and costly, the most common of which require radical modification to the structure of the rubber sole itself.
The soles which to date ventilate the foot generally have a hollow at the front of the sole designed to house a conforming insert which pumps air as well as a chamber through which the air drawn into the shoe is evacuated, generally on the heel;
20 it being provided that these two hollows intercommunicate by . CA 02238842 1998-0~-27 means of a series of longitudinal air passages in the sole at approximately the level of the shank.
The air drawn into the shoe by the opposing pumping insert is then conveyed into the longitudinal air ducts and from these 5 flows into the chamber positioned on the heel from which it is evacuated to the exterior of the shoe through one or more breather holes opening on the sides of the heel.
As far as the pumping element is concerned, it should be noted that to date on the most commonly used models the 0 same is realised in rather soft materials and is fltted with a closely fitted series of pliable hollow flngers each of which is provided with a respective hole through which air is drawn into the inner section of the shoe.
The energetic pressure placed on these fingers by the sole of the foot due to the impact of the shoe on the treading surface compresses the same thereby forcing the air out into the longitudinal air passages which in turn convey the air to the evacuation chamber.
It is evident that each flnger of the above pumping insert 20 elastically resumes its shape as soon as the foot lifts from the ground; obviously this expansion again forces air into each hollow finger which is again forced out as described above when the shoe is again pressed against the treading surface.
The sole according to the invention is a valid alternative to this 25 tried and tested technique in that it provides the same practical result with a less sophisticated and consequently less costly structure which is easier to produce.
In particular the item according to the invention supercedes the prior manufacturing principle requiring two separate - CA 02238842 1998 - 0~ - 27 hollows (at the front to house the pumping insert and at the back for the evacuation of air) joined and connected by one or more straight longitudinal air passages between the same.
In order to implement the inventive solution a single long 5 cavity is provided on the upper surface of a plastic moulded sole; this cavity extends from the middle of the front section to the heel including the shank area without any gaps.
For most of its length from the front end, said cavity houses an innovative conforming pumping insert; while the rear section of the cavity, namely that on the heel, acts as evacuation chamber.
For this reason the rear section of the cavity in question is connected to the exterior by one or more breather holes realised in the preferred embodiment on the front vertical edge of the heel.
In this regard, the innovative pumping insert consists of a pliable and elastic plastic cushion provided in the interior with a series of rectilinear ducts each of which communicates with the exterior by means of a series of holes realised on the 20 upper surface of the cushion.
As mentioned previously, said cushion is housed in the long section of the above cavity which covers the front area of the sole and shank; it being provided in particular that the inner ducts are positioned parallel to the longitudinal axis of the 25 sole.
Moreover, the cushion is shaped and dimensioned to ft perfectly with a slight pressure into the section of the cavity in question; this perfect fit prevents unwanted sliding of the . - CA 02238842 1998-0~-27 cushion in the respective housing and consequently ensures absolute stability in the sole according to the invention.
The ducts provided in the cushion in question produce a pumping action which in the conventional models was 5 produced by the yielding fingers.
When the cushion housed in the sole according to the invention is pressed by the weight of the foot, the air in the inner ducts is forced out and when the sole is lifted from the treading surface the inner ducts spontaneously resume their original shape and are again filled with air through the series of holes provided therefor.
In this regard it should be noted that the air in the inner ducts of the pumping insert in question can escape only through the rear section of the cavity, which is the only cavity not occupied 15 by the cushion.
For the remaining perimeter in fact of the pumping insert the ends of the ducts are "sealed" by the vertical walls of the housing which prevents air from escaping and consequent loss of pressure.
20 This means that the air expelled from the cushion, thanks also to the longitudinal positioning of its inner ducts, can only be forced into the evacuation chamber provided on the heel of the sole according to the invention.
In this sense it is obvious that the longitudinal ducts of the 25 pumping cushion fitted on the sole according to the invention replace, in terms of positioning and function, the rectilinear ducts which in conventional soles link the front housing section and the rear air evacuation chamber.
. CA 02238842 1998-0~-27 It should also be noted that the pumping cushion used in the sole according to the invention ensures an undoubtedly more efficient and regular air flow with respect to that produced by the pumping inserts of the previous type, namely those using 5 the conventional fingers positioned side by side; the reason for this is that the rectilinear ducts used have no dividing or deviating sections which would certainly result in a loss of load capable of preventing the free circulation of air.
For major clarity the description according to the invention continues with reference to the enclosed drawings which are intended for purposes of illustration and not in a limiting sense whereby:
~ figure 1 is a top view of the sole according to the invention;
. flgure 2 is a cross-section of figure 1 on plane ll-ll;
. figure 3 is a cross-section offigure 1 on plane lll-lll.
With reference to the enclosed figures, the sole according to the invention (1) is moulded in plastic material and provided with a long cavity on its upper surface which extends continuously from the front section to the heel; the first long 20 section (2a) of said cavity - namely that on the front section and on the shank- is designed to house a special conforming pumping insert (3).
The rear section (2b) of the same cavity - namely that positioned approximately on the heel area - remains empty 25 and is the air evacuation chamber which communicates with the exterior thanks to a small breather hole (4) under the sole (1 ) on the front vertical wall of the heel.
: CA 02238842 1998-0~-27 It should be noted that a unidirectional valve to prevent air, dust or water from the exterior from entering in the evacuation chamber (2b) could be fitted on said breather hole (4).
Regarding the pumping insert (3), the same consists of a 5 pliable elastic plastic cushion provided internally with a series of rectilinear ducts (3a) positioned parallel to the longitudinal axis of the sole (1); the upper surface of the cushion (3) being provided with a series of holes (3b) designed to link the above inner ducts (3a) to the exterior.
As mentioned above, the particular positioning of the ducts (3a) of the pumping insert (3), parallel to the longitudinal axis of the sole (1 ) ensures that every time the pumping insert (3) is pressed - the air in the same flows directly into the empty rear section (2b) of the above cavity, namely the section which acts 5 as the evacuation chamber.
It should be mentioned that shoes fitted with the sole according to the invention must be provided internally with a hygienic inner sole having numerous through holes preferably coinciding with the position of the holes (3b) which allow air to 20 enter the pumping insert (3).
This feature is designed to prevent the inner sole from sealing the upper surface of the underlying pumping insert (3) thereby preventing the air in the shoe section from being drawn into the same.
Shoe Sole with Cushioning Element Capable of Ensuring Forced Air Circulation in the Inner Section of the Shoe This patent application concerns a moulded plastic sole which is provided on its upper surface with a pliable cushion which also ensures forced ventilation of the inner section of the shoe as a result of the alternating pressure of the user's foot on the 5 same as he or she walks.
The sole in question is designed to ensure forced circulation of air in a closed shoe so that the foot can transpire properly.
It is common knowledge that in conventional closed shoes with plastic sole the foot does not transpire properly with the 0 risk of skin irritation and peeling; this becomes even more of a problem for those who tend to sweat heavily.
As a matter of fact this problem has already been faced with techniques which are undoubtedly more sophisticated and costly, the most common of which require radical modification to the structure of the rubber sole itself.
The soles which to date ventilate the foot generally have a hollow at the front of the sole designed to house a conforming insert which pumps air as well as a chamber through which the air drawn into the shoe is evacuated, generally on the heel;
20 it being provided that these two hollows intercommunicate by . CA 02238842 1998-0~-27 means of a series of longitudinal air passages in the sole at approximately the level of the shank.
The air drawn into the shoe by the opposing pumping insert is then conveyed into the longitudinal air ducts and from these 5 flows into the chamber positioned on the heel from which it is evacuated to the exterior of the shoe through one or more breather holes opening on the sides of the heel.
As far as the pumping element is concerned, it should be noted that to date on the most commonly used models the 0 same is realised in rather soft materials and is fltted with a closely fitted series of pliable hollow flngers each of which is provided with a respective hole through which air is drawn into the inner section of the shoe.
The energetic pressure placed on these fingers by the sole of the foot due to the impact of the shoe on the treading surface compresses the same thereby forcing the air out into the longitudinal air passages which in turn convey the air to the evacuation chamber.
It is evident that each flnger of the above pumping insert 20 elastically resumes its shape as soon as the foot lifts from the ground; obviously this expansion again forces air into each hollow finger which is again forced out as described above when the shoe is again pressed against the treading surface.
The sole according to the invention is a valid alternative to this 25 tried and tested technique in that it provides the same practical result with a less sophisticated and consequently less costly structure which is easier to produce.
In particular the item according to the invention supercedes the prior manufacturing principle requiring two separate - CA 02238842 1998 - 0~ - 27 hollows (at the front to house the pumping insert and at the back for the evacuation of air) joined and connected by one or more straight longitudinal air passages between the same.
In order to implement the inventive solution a single long 5 cavity is provided on the upper surface of a plastic moulded sole; this cavity extends from the middle of the front section to the heel including the shank area without any gaps.
For most of its length from the front end, said cavity houses an innovative conforming pumping insert; while the rear section of the cavity, namely that on the heel, acts as evacuation chamber.
For this reason the rear section of the cavity in question is connected to the exterior by one or more breather holes realised in the preferred embodiment on the front vertical edge of the heel.
In this regard, the innovative pumping insert consists of a pliable and elastic plastic cushion provided in the interior with a series of rectilinear ducts each of which communicates with the exterior by means of a series of holes realised on the 20 upper surface of the cushion.
As mentioned previously, said cushion is housed in the long section of the above cavity which covers the front area of the sole and shank; it being provided in particular that the inner ducts are positioned parallel to the longitudinal axis of the 25 sole.
Moreover, the cushion is shaped and dimensioned to ft perfectly with a slight pressure into the section of the cavity in question; this perfect fit prevents unwanted sliding of the . - CA 02238842 1998-0~-27 cushion in the respective housing and consequently ensures absolute stability in the sole according to the invention.
The ducts provided in the cushion in question produce a pumping action which in the conventional models was 5 produced by the yielding fingers.
When the cushion housed in the sole according to the invention is pressed by the weight of the foot, the air in the inner ducts is forced out and when the sole is lifted from the treading surface the inner ducts spontaneously resume their original shape and are again filled with air through the series of holes provided therefor.
In this regard it should be noted that the air in the inner ducts of the pumping insert in question can escape only through the rear section of the cavity, which is the only cavity not occupied 15 by the cushion.
For the remaining perimeter in fact of the pumping insert the ends of the ducts are "sealed" by the vertical walls of the housing which prevents air from escaping and consequent loss of pressure.
20 This means that the air expelled from the cushion, thanks also to the longitudinal positioning of its inner ducts, can only be forced into the evacuation chamber provided on the heel of the sole according to the invention.
In this sense it is obvious that the longitudinal ducts of the 25 pumping cushion fitted on the sole according to the invention replace, in terms of positioning and function, the rectilinear ducts which in conventional soles link the front housing section and the rear air evacuation chamber.
. CA 02238842 1998-0~-27 It should also be noted that the pumping cushion used in the sole according to the invention ensures an undoubtedly more efficient and regular air flow with respect to that produced by the pumping inserts of the previous type, namely those using 5 the conventional fingers positioned side by side; the reason for this is that the rectilinear ducts used have no dividing or deviating sections which would certainly result in a loss of load capable of preventing the free circulation of air.
For major clarity the description according to the invention continues with reference to the enclosed drawings which are intended for purposes of illustration and not in a limiting sense whereby:
~ figure 1 is a top view of the sole according to the invention;
. flgure 2 is a cross-section of figure 1 on plane ll-ll;
. figure 3 is a cross-section offigure 1 on plane lll-lll.
With reference to the enclosed figures, the sole according to the invention (1) is moulded in plastic material and provided with a long cavity on its upper surface which extends continuously from the front section to the heel; the first long 20 section (2a) of said cavity - namely that on the front section and on the shank- is designed to house a special conforming pumping insert (3).
The rear section (2b) of the same cavity - namely that positioned approximately on the heel area - remains empty 25 and is the air evacuation chamber which communicates with the exterior thanks to a small breather hole (4) under the sole (1 ) on the front vertical wall of the heel.
: CA 02238842 1998-0~-27 It should be noted that a unidirectional valve to prevent air, dust or water from the exterior from entering in the evacuation chamber (2b) could be fitted on said breather hole (4).
Regarding the pumping insert (3), the same consists of a 5 pliable elastic plastic cushion provided internally with a series of rectilinear ducts (3a) positioned parallel to the longitudinal axis of the sole (1); the upper surface of the cushion (3) being provided with a series of holes (3b) designed to link the above inner ducts (3a) to the exterior.
As mentioned above, the particular positioning of the ducts (3a) of the pumping insert (3), parallel to the longitudinal axis of the sole (1 ) ensures that every time the pumping insert (3) is pressed - the air in the same flows directly into the empty rear section (2b) of the above cavity, namely the section which acts 5 as the evacuation chamber.
It should be mentioned that shoes fitted with the sole according to the invention must be provided internally with a hygienic inner sole having numerous through holes preferably coinciding with the position of the holes (3b) which allow air to 20 enter the pumping insert (3).
This feature is designed to prevent the inner sole from sealing the upper surface of the underlying pumping insert (3) thereby preventing the air in the shoe section from being drawn into the same.
Claims (2)
1) A shoe sole moulded in plastic characterised by a cavity occupying most of the length of the upper surface and consisting of two consecutive sections, the first front section (2a) of which is designed to house a pumping cushion (3) and the second back section (2b) being designed to communicate with the exterior thanks to one or more breather holes (4) opening on the external walls of the sole; it being provided that the pumping insert (3) realised in elastic pliable material features an internal series of rectilinear ducts (3a) parallel to the longitudinal axis of the sole (1) communicating with the exterior thanks to a series of holes (3b) on the upper surface of the pumping insert (3).
2) A shoe sole moulded in plastic according to claim 1 characterised in that the above breather holes (4) are fitted with respective unidirectional valves.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT97MC000056A IT1292567B1 (en) | 1997-06-13 | 1997-06-13 | SOLE FOR FOOTWEAR EQUIPPED WITH A SHOCK ABSORBING BEARING ABLE TO ENSURE FORCED AERATION OF THE INTERNAL COMPARTMENT OF THE SAME |
| ITMC97A000056 | 1997-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2238842A1 true CA2238842A1 (en) | 1998-12-13 |
Family
ID=11357386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002238842A Abandoned CA2238842A1 (en) | 1997-06-13 | 1998-05-27 | Shoe sole with cushioning element capable of ensuring forced air circulation in the inner section of the shoe |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5974694A (en) |
| EP (1) | EP0884005A1 (en) |
| CA (1) | CA2238842A1 (en) |
| IT (1) | IT1292567B1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6463679B1 (en) * | 1999-10-21 | 2002-10-15 | Yamamoto Limited | Forced ventilation system inside soles |
| TW453151U (en) * | 2000-01-02 | 2001-09-01 | Ju Huei Jeng | Structure of air valve for shoes with ventilation system |
| SG105501A1 (en) * | 2001-07-16 | 2004-08-27 | Huey Cheng Chu | Shoe with air valve for air refreshing system |
| US20040088882A1 (en) * | 2002-11-08 | 2004-05-13 | Yamamoto Limited | Flow regulator adaptable to ventilating systems inside shoes |
| US6993858B2 (en) | 2003-05-23 | 2006-02-07 | Crocs, Inc. | Breathable footwear pieces |
| US7146751B2 (en) | 2003-05-23 | 2006-12-12 | Crocs, Inc. | Footwear pieces |
| DE202006004030U1 (en) | 2006-03-14 | 2006-05-18 | Hidde, Axel R., Dr. Ing. | Shock absorbing pumping vapor permeable waterproof shoe |
| US20080016715A1 (en) * | 2006-07-18 | 2008-01-24 | Vickroy Samuel C | Apparatuses and methods for adjusting temperatures within shoes |
| CN103355818A (en) * | 2007-08-01 | 2013-10-23 | 波尔沃克思公司 | Shoe |
| US8371044B2 (en) | 2007-08-01 | 2013-02-12 | Polliwalks, Inc. | Shoes |
| US8146268B2 (en) * | 2009-01-28 | 2012-04-03 | Sears Brands, Llc | Shoe having an air cushioning system |
| ITAN20100032U1 (en) * | 2010-05-31 | 2011-12-01 | Din Mahamed Sayed Muslim Mirza | ANKLE BOOT IN PLASTIC MATERIALS EQUIPPED WITH A VENTILATED SUSPENSION BOTTOM. |
| US9010075B2 (en) | 2011-03-31 | 2015-04-21 | Dell Products Lp | Systems and methods for gas packaging |
| US10040888B1 (en) | 2013-06-14 | 2018-08-07 | Cooper-Standard Automotive Inc. | Composition including silane-grafted polyolefin |
| US10100139B2 (en) | 2013-08-01 | 2018-10-16 | Cooper-Standard Automotive Inc. | Hose, composition including silane-grafted polyolefin, and process of making a hose |
| EP3164633B1 (en) | 2014-07-02 | 2020-01-29 | Cooper-Standard Automotive, Inc. | Hose, abrasion resistant composition, and process of making a hose |
| KR102161086B1 (en) | 2016-12-10 | 2020-10-05 | 쿠퍼-스탠다드 오토모티브 인코포레이티드 | Polyolefin elastomer composition and manufacturing method thereof |
| KR20190092529A (en) | 2016-12-10 | 2019-08-07 | 쿠퍼-스탠다드 오토모티브 인코포레이티드 | Dynamic seals, compositions, and methods of making the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2239211A (en) * | 1940-04-19 | 1941-04-22 | Wylie William De Kalb | Ventilated shoe |
| DE7806330U1 (en) * | 1978-02-28 | 1978-10-12 | Weber-Unger, Georg, 8201 Nussdorf | Shoe, in particular sports shoe |
| US4617745A (en) * | 1983-08-15 | 1986-10-21 | Batra Vijay K | Air shoe |
| US4654982A (en) * | 1985-04-18 | 1987-04-07 | Lee Kuyn C | Toe ventilating pneumatic shoes |
| US4860463A (en) * | 1988-08-30 | 1989-08-29 | Huang Pin | Footwear having ventilation and shock-absorbing properties |
| US4939851A (en) * | 1989-01-03 | 1990-07-10 | Omega Corporation | Boat shoe |
| EP0472517A1 (en) * | 1989-05-05 | 1992-03-04 | BETAPLAST - S.r.l. (joint-stock company limited) | Sole with air cushion for footwear and respective footwear with said sole |
| WO1996024267A1 (en) * | 1995-02-06 | 1996-08-15 | Jeong Kun Yoon | Shoes excellent in ventilation |
| IT1280309B1 (en) * | 1995-03-17 | 1998-01-15 | Petris Spa | SOLE FOR FOOTWEAR, FORMED BY MOLDING, CAPABLE OF SUCTION AIR FROM THE SHOE COMPARTMENT AND EXPELLING IT OUTSIDE THROUGH THE HEEL |
| GB9515796D0 (en) * | 1995-08-01 | 1995-10-04 | Connell Denis L O | Shoe and insole therefor |
-
1997
- 1997-06-13 IT IT97MC000056A patent/IT1292567B1/en active IP Right Grant
- 1997-12-23 EP EP97830702A patent/EP0884005A1/en not_active Withdrawn
-
1998
- 1998-05-27 CA CA002238842A patent/CA2238842A1/en not_active Abandoned
- 1998-05-27 US US09/085,640 patent/US5974694A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ITMC970056A1 (en) | 1998-12-13 |
| US5974694A (en) | 1999-11-02 |
| IT1292567B1 (en) | 1999-02-08 |
| ITMC970056A0 (en) | 1997-06-13 |
| EP0884005A1 (en) | 1998-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5974694A (en) | Shoe sole with cushioning element capable of ensuring forced air circulation in the inner section of the shoe | |
| US5950332A (en) | Fluid circulating cushioned insole | |
| US7617618B2 (en) | Insole and shoe having an insole | |
| EP0437869B1 (en) | Self-ventilating shoe | |
| EP0903984B1 (en) | Forced-ventilation shoe | |
| US5956869A (en) | Shoe sole construction with mesh liner for mid-sole cavity | |
| US5400526A (en) | Footwear sole with bulbous protrusions and pneumatic ventilation | |
| US20040010939A1 (en) | Shoes having ventilation devices | |
| EP1206202B1 (en) | Ventilated footwear | |
| US4993173A (en) | Shoe sole structure | |
| US20050241180A1 (en) | Sole for shoes including transpiration side valves formed by moulding | |
| WO2004098334A3 (en) | Footwear construction | |
| US8375601B2 (en) | Footwear with air cavities | |
| GB2247391A (en) | Ventilated footwear | |
| EP0780063A1 (en) | Bottom for footwear with ventilating protuberances | |
| GB2382017A (en) | Air channel arrangement in ventilated footwear | |
| WO1997004676A1 (en) | Insole for shoe | |
| KR20060094827A (en) | Shoes to be exhausted and ventilated of inner air | |
| KR200385525Y1 (en) | Shoes to be exhausted and ventilated of inner air | |
| JP4109720B2 (en) | Air circulation footwear and manufacturing method thereof | |
| KR100462809B1 (en) | Shoes inner pad for inputting a outer air | |
| WO2000010414A1 (en) | Dispersed-air footpad | |
| KR200248615Y1 (en) | Air circulation type shoes base | |
| KR20000058689A (en) | Installed air hose in sole for shoes | |
| KR200305815Y1 (en) | the shoes cushion with airing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |