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Publication numberUS2741038 A
Publication typeGrant
Publication dateApr 10, 1956
Filing dateJul 23, 1952
Priority dateJul 23, 1952
Publication numberUS 2741038 A, US 2741038A, US-A-2741038, US2741038 A, US2741038A
InventorsPer Eliassen
Original AssigneePer Eliassen
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air conditioned footwear
US 2741038 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 10, 1956 P. ELIASSEN AIR CONDITIONED FOOTWEAR Filed July 25, 1952 INVENTOR. PER [Z MJsE/v BY, p?

ATTORNEY United States Patent 2,741,038 AIR CONDITIONED FOOTWEAR Per Eliassen, New York, N. Y.

Application July 23, 1952, Serial No. 309,451

1 Claim. (Cl. 36-3) The present invention relates to boots and shoes of a type wherein a special form of ventilation is provided for the interior of the footwear involved, and particularly to what I choose to term air conditioned footwear.

The main object of my invention is to provide a boot or the like with a special hollow or channel construction for ventilating the foot from the outside without exposing the foot to the atmosphere or to drafts and annoying direct contact with strong movements of the air about the footwear.

Another object is to provide such a boot or footwear with a partially hollow sole and air passages communicating therewith from the outside in controlled manner.

An ancillary object is to have the shank of the boot provided with a descending air passage communicating with an air chamber at the heel of the footwear and the air chamber also communicating with an air passage beneath the sole.

It is, of course, an object of the invention to provide boots or footwear of the character indicated that is effective to ventilate the feet in safe manner, and yet be simple and durable in construction, as well as reasonable in cost in order to encourage wide distribution on the market, both on economical and health grounds.

A practical object is likewise to provide such footwear that may include the features and advantages of the invention without imparting any peculiar appearance or additional weight to the footwear thus equipped.

Other objects and advantages will appear in greater detail as the specification proceeds.

In order to facilitate ready comprehension of this invention for a proper appreciation of the salient features thereof, the invention is illustrated on the accompanying drawing forming part hereof, and in which: 7

Figure l is avertical section of a boot or like footwear made according to my invention and embodying the same in a practical form;

Figure 2 is a rear elevation of the same boot or footwear as seen from the right in Figure 1; and

Figure 3 is a bottom plan view of the same boot or footwear as seen from below in Figure 1.

In these views, the same numerals indicate the same or like parts.

In footwear, it is a well known difiiculty to find that perspiration of the feet gives rise to a group of annoyances and troubles of more or less serious nature, because conventional boots and shoes are virtually air tight, so that the feet become moist and soggy and all too soon rather odoriferous. It is also true that the feet in such condi tion are rather sensitive and various kinds of rashes may appear, not to mention that it is difficult in such conditions to be fastidious as is desired in all polite society.

Upon considering this problem, it has occurred to me that footwear should be ventilated in a special manner so that the excess moisture of the feet will be carried off and the feet kept reasonably dry and well aired without actual exposure to drafts or cold. As a result, I have succeeded in producing a special type of footwear along the lines already mentioned, as will now be described in detail in the following.

Hence, in the practice of my invention, and referring also again to the drawing, a boot or like footwear generally indicated at 4 includes a sole 5 and heel 6, the upper 7 and top 8, made of rubber, flexible plastic or leather. Down along the rear of top 8 is provided a descending air passage 9 communicating at the upper end with the atmosphere through a special perforate button or gland 10 secured in place to form the inlet port for ventilating air for the boot. At the bottom, this passage 9 communicates with a hollow pod, lung or reservoir 11 of rubber or the like. At the junction of the narrow passage 9 with the resilient reservoir 11 is located a one way vaive 12 preventing return of air from this reservoir to passage 9 but allowing free flow of air down passage 9 to the reservoir at all times.

From the lung or reservoir 11 there extends a second passage 13 forwardly beneath the foot in the sole 5 with another valve 14 located intermediateiy for closing this passage when the weight of the foot is placed on the sole upon lifting of the heel. At the forward end, this sole passage 13 opens in an air inlet port 15 through which air from passage 13 enters the interior 16 of the boot.

The arrangement is such that when the boot is in actual use, the foot in bearing down on the lung or reservoir 11 compresses the air therein that has arrived from passage 9 thru port 10 and drives the air forward through pas sage 13 and into boot chamber 16 through inlet port 15. As the foot bears down on the intermediate portion of the sole 5, valve 14 is closed and prevents air from passing rearwardly through this passage into the reservoir. As the heel of the foot is lifted, pressure on the reservoir or lung 11 is relieved and it tends to spring up into its full dimensions, drawing in air through passage 9 by way of inlet port it and past one way valve 12. As the foot is again lowered upon the heel 6, pressure on the reservoir again closes valve 12 and forces air forward through passage 13 and into the boot interior 16 through front vent 1S, and so on.

From the foregoing, it is evident that a continuous one way movement or breathing of air is maintained by walking in the boot or footwear above described, so that the foot is continuously ventilated and kept dry and fresh. I he footwear may naturally be of any size or style and have very high or medium tops, and the boots or the like thus constructed may be made of various materials suitable for the purpose.

Manifestly, variations may be resorted to, and parts and features may be modified or used without others within the scope of the appended claim.

Having now fully described my invention, I claim:

An air conditioned boot or the like, including a sole and heel with an upper extending upwards therefrom, the heel portion having a compressible reservoir, the upper having a built-in passage extending upwards from the rear portion of the reservoir with which it connects to a point upon the rear of said upper below the top of the latter at which point it opens to the exterior, and the sole having a single passage extending forward from the reservoir with which it connects at the rear end of said passage and this passage opening upwards into the boot through the sole at the forwar'dend ofsaid passage in the toe portionofrsaidsole, saidipassage being directand unbroken from the reservoir to the point at which it opens into the toe portion, and an integral portion of said sole depending into an intermediate portion of said passage in effective position to close the passage when the foot is brought down on the sole, there being a valve at the rear of the reservoir at the junction thereof with the upwardly extending passage.

References Cited in the file of this patent UNITED STATES PATENTS Falkner Apr. 29, Locke Dec. 29, Marabini May 8, Williams Feb. 28, Gantt May 18, Dunker May 15, Oltrogge July 17,


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US426495 *Aug 28, 1889Apr 29, 1890 Ventilated shoe
US466061 *May 6, 1891Dec 29, 1891 Ventilated shoe
US1225455 *Jun 23, 1916May 8, 1917Raffaele MarabiniPneumatic shoe.
US1660698 *Oct 27, 1926Feb 28, 1928Sr Ormsby P WilliamsVentilating foot covering
US2441879 *Nov 13, 1945May 18, 1948Gantt Richard RVentilated shoe
US2552711 *Sep 22, 1949May 15, 1951Dunker MarthaSole to permit circulation of air in rubber footwear
US2560591 *Jul 11, 1949Jul 17, 1951Oltrogge Bernard WFoot ventilating shoe
SE89045A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2981010 *May 13, 1960Apr 25, 1961Helmer AaskovAir-filled sandals
US3128566 *Mar 14, 1961Apr 14, 1964Burlison Garry LVentilated boot
US3791051 *Jun 7, 1972Feb 12, 1974Kamimura SInner sole
US4102061 *Mar 2, 1977Jul 25, 1978Karhu-Titan OyShoe sole structure
US4993173 *Aug 29, 1989Feb 19, 1991Gardiner James TShoe sole structure
US5010661 *May 2, 1990Apr 30, 1991Chu Chi KongUnidirectional airflow ventilating shoe and a unidirectional airflow ventilating insole for shoes
US5138775 *Oct 28, 1991Aug 18, 1992Chu Hui ChengVentilated shoes
US5285585 *Jan 26, 1993Feb 15, 1994Baker Sharene MSound emitting infant boot structure
US5295312 *Nov 16, 1992Mar 22, 1994Stanley BlumbergVentilated boot with waterproof layer
US5813140 *Jun 30, 1997Sep 29, 1998Obeid; Abdelhakim R.Ventilated shoe
US6044577 *Sep 28, 1998Apr 4, 2000Breeze TechnologySelf-ventilating footwear
US6079123 *Sep 28, 1998Jun 27, 2000Breeze TechnologySelf-ventilating insert for footwear
US6370799 *Aug 4, 2000Apr 16, 2002Reed E. ThatcherVentilated footwear assembly
US6553690Dec 10, 2001Apr 29, 2003Opal LimitedVentilated footwear
US9474323 *Feb 12, 2014Oct 25, 2016Reebok International LimitedShoe having an inflatable bladder
US20050005473 *Jul 7, 2003Jan 13, 2005Oh Phillip J.Self-cushion airflow shoes
US20090044431 *Feb 10, 2006Feb 19, 2009Alpo HypponenVentilated Shoe or Insole
US20140173837 *Sep 30, 2013Jun 26, 2014Neville Ka Shek LeeMethod of producing sole for bending-actuated aerated footwear
US20140223772 *Feb 12, 2014Aug 14, 2014Reebok International LimitedShoe Having An Inflatable Bladder
USD485426Oct 23, 2002Jan 20, 2004Opal LimitedInsole
EP0319968A2 *Dec 7, 1988Jun 14, 1989Chikong ChuUnidirectional air flow ventilating shoe and insole
EP0319968A3 *Dec 7, 1988Mar 7, 1990Chikong ChuUnidirectional air flow ventilating shoe and insole
EP0714611A1Nov 30, 1995Jun 5, 1996S.A.R.L. TechnisyntheseVentilating device for shoes and method for making the same
WO1986002240A1 *Oct 18, 1985Apr 24, 1986Kenneth CaldwellImprovements in or relating to pumps
U.S. Classification36/3.00R
International ClassificationA43B7/06, A43B7/00
Cooperative ClassificationA43B7/06
European ClassificationA43B7/06