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Publication numberUS3050875 A
Publication typeGrant
Publication dateAug 28, 1962
Filing dateMay 7, 1962
Priority dateMay 7, 1962
Publication numberUS 3050875 A, US 3050875A, US-A-3050875, US3050875 A, US3050875A
InventorsRobbins Daniel T
Original AssigneeRobbins Daniel T
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Self-ventilating sole
US 3050875 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug. 28, 1962 D. T. RoBBlNs 3,050,875


Filed May 7, 1962 '6 IO le 24 2o DANIEL T. ROBBINS BY MKM United @te Y 3,956,875 SELF-VENTLATING SLE Daniel T. Robbins, 2104 Pepper St., Burbank, Calif.

Filed May 7, 1962, Ser. No. 192,869 4 Claims. (Cl. 36-3) The present invention relates generally to footwear and more particularly to a self-Ventilating sole for shoes, either as Ian integral part of a standard shoe, or that may be used as an insertable insole in a non-ventilated shoe.

It is the primary object of this invention to provide a cushion insole that will continually circulate air around the toes where the foot particularly tends to perspire.

A still further object of the invention is to provide such simplicity of design as to materially reduce'the cost of construction relative to existing methods of circulating air within shoes, and insure continual circulatory operation through the life of the shoe.

Another object of this invention is to provide a shoe sole containing a resilient iller inV which are interconnected cavities extending substantially the full length of the sole, air being pumped, by the rolling motion o'f the foot while walking, through vents in the insole beneath the toes.

Another object of this invention is to provide a self- Ventilating sole in which all air passes through the vents beneath the toes, both incoming and outgoing during the pumping action.

A further object of this invention is to provide a self- Ventilating sole which is adaptable to many types of shoes with only a very slight increase in sole thickness.

Finally, it is an object to provide a self-Ventilating sole of the aforementioned character which is simple and convenient to manufacture and which will give generally eicient and durable service.

With these and other objects definitely in View, this invention consists in the novel construction, combination and arrangement of elements and portions, as will be hereinafter fully described in the specilication, particularly pointed out in the claims, and illustrated in the drawing which forms a ymaterial part of this disclosure, and in which: i

FIGURE l is a perspective View of a shoe incorporating the self-Ventilating sole, portions being cut away to reveal the structure;

FIGURE 2 is an enlarged longitudinal sectional View taken on line 2-2 of FIGURE l;

FIGURE 3 is an enlarged transverse sectional View taken on line 3-3 of FIGURE l; and

'.FiGURl-E 4 is a further enlarged transverse sectional view taken on line 4 4 of FIGURE 2.

Referring now to the drawing in which like reference characters relate to identical or similar elements throughout the different views:

The self-Ventilating sole, generally indicated by the numeral 10, is incorporated into a shoe, generally indicated at 12, having an upper 14 and heel 16, the actual configuration of the shoe being variable. The sole cornprises an outer sole 18, an intermediate filler and an insole 22, the filler being of novel construction to provide the Ventilating action. v

Filler 10 is vmade from resilient material such as foam plastic, sponge rubber, or the like and is provided with a plurality of cavities 24 spaced along the length of the sole. The specific shape of the cavities 24 may be Varied, a generally oval conliguration being preferred and illustrated, and the Width of the cavities varying according to the eff-@eige @arent overall width of the sole to utilize space effectively. All

V-shaped in vertical cross-section for more certain closing of the passages Iwhen said walls are depressed and deformed. The wall portions 23 can be slightly domed or raised with a substantially flat top, as indicated in FIG- URES l and 3, to prevent sagging of the insole and compensate for the decrease in filler material caused by the cavities 24, while increasing the elective air capacity of the cavities. `ln normal construction, this thickening of the central portion of the filler compensates also for the extra thickness provided by the lower terminal edge portions 25 of the upper, and generally improves the comfort of Wearing the shoe. To facilitate assembly the cavities 24 do not extend completely through insole 22, a bottom layer 29 being retained to hold the proper shape of the insole.

The insole 22 has a plurality of small vents 39 at the forward end communicating with one of the forwardmost cavities 24, said vents being disposed in the area which falls beneath the toes. The number and spacing of the vents Sil will depend on the size and shape of the toe portion of the shoe. Conventional methods of shoe construction will provide adequate sealing between the cornponents 18, 29 and 22 of the sole l0. IAn inner sock liner 32 is secured to the insole 22, vents Sil continuing through said sock liner.

lf reference be had to FIGURE 2, it will be evident that the heel bears down initially, compressing the rearmost cavities 24, the forward motion of the leg in walking causing the weight to advance with a rolling motion along the instep and ball of the foot. Thus the cavities 24 are compressed successively and the air therein is squeezed forwardly, as indicated by directional arrows, to escape through vents 30. When the wall portions 2S are compressed the narrow passages '26 tend to close, as in FIG- URE 4, preventing the air from leaking back to the rear cavities. ln this manner the air is virtually pumped through the successive cavities 24 and passages 26 to the front of the shoe, the vents 30 being the only outlets. Since these vents 3i) are under the toes where a major portion of the perspiration occurs, the cooling effect of the air is concentrated in the most eifective zone.

When the foot is raised and pressure is released, air returns through the vents 30 to refill the expanding cavities 24. Due to the high Velocity expulsion of a considerable quantity of air through a limited vent area, the air circulates through the shoe rapidly with no tendency to accumulate in the toe area. Thus the major portion of the air dnawn back into the cavities will be fresh air, which will have a very signicant cooling eEect during 'the inspiration or inward motion thereof; as well as a marked cooling effect during the expiration or expulsion phase. Of course, the Ventilating simpliciter, as distinguished from cooling, is accomplished by reason of the actual escape of air from the top 34 of the shoe and the replacement by fresh air at virtually every step, as mentioned earlier in this paragraph.

The self-Ventilating sole does not interfere with the normal construction of a shoe and is adaptable to many different shoe types. Due to the efficiency of the multiple chamber pumping action and the limited venting, the iiller need not be very thick, resulting in no increase or in only a small increase in sole thickness in most shoes. With the proper material, the filler 20 could be molded as a Vunit with either the insole 22 or the outer sole 1S, for simpliiied construction.

It is understood that minor variation from the form of the invention disclosed herein may be made without departure from the spirit and scope of the invention, and that the specification `and drawings are to be considered as merely illustrative rather than limiting.

j Y Y l 3,050,875

Vsaid iiller being resilient and having a plurality of interconnected cavities therein extending along a major portion of the length of said ller;

said insole having Vents communicating with said cavities and disposed in the forward end portion of the insole in the area occupied by the toes of the wearer.

2. A self-Ventilating sole for a shoe, comprising:

lan outer sole, an intermediate iiller and an insole joined together in sealed relation;

said ller being resilient and containing a plurality of cavities spaced longitudinally of the ller and having narrow wall portions therebetween -with narrow passages therethrough which can be substantially closed by the pressure ofa foot thereon;

said insole having vents inV the forward end portion thereof communicating with at least one of said cavities and disposed in the area occupied by the toes of the wearer.

3. A sole according to claim 2 wherein said passages are V-shaped in vertical cross-section.V

4. A self-Ventilating sole for a shoe, comprising:

an outer sole, an intermediate Ifiller and an insole joined together in sealed relation;

said ller being resilient and containing a plurality of longitudinally spaced cavities having wall portions therebetween;

certain of said Wall portions being upwardly domed for increased depth and having substantially flat tops;

said wall portions having narrow passages interconmeeting said cavities which can be substantially closed by the pressure of a foot thereon; Y

said insole having vents at the forward end thereof communicating 'With said cavities and disposed in the area occupied by the toes of the wearer.

References Cited in the le of this patent UNITED STATES PATENTS 2,432,533 Margolin Dec. 16, 1947 2,720,041 Kajtar Oct. 11, 1955 2,722,063 i Drefvelin Nov. 1, 1955 3,012,342 Ramirez Dec. l2, 1961

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2432533 *Apr 25, 1944Dec 16, 1947Meyer MargolinVentilated midsole
US2720041 *Mar 31, 1953Oct 11, 1955Kalman KajtarFootwear with provision to change the air therein
US2722063 *Feb 2, 1954Nov 1, 1955Drefvelin Henrik VilhelmPerforate insole for shoes
US3012342 *Jul 6, 1960Dec 12, 1961Loza Ramirez EliseoSole assembly for footwear
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3274708 *Oct 14, 1965Sep 27, 1966Lukas George AAir circulatory insole
US3791051 *Jun 7, 1972Feb 12, 1974Kamimura SInner sole
US4364186 *Jan 29, 1981Dec 21, 1982Fukuoka Kagaku Kogyo Kabushiki KaishaVentilated footwear
US4763426 *Mar 25, 1987Aug 16, 1988Michael PolusSport shoe with pneumatic inflating device
US4800867 *Jun 5, 1986Jan 31, 1989Robert OwensFoot comforter
US4993173 *Aug 29, 1989Feb 19, 1991Gardiner James TShoe sole structure
US6305100 *Feb 24, 1997Oct 23, 2001Eugene KomarnyckyShoe ventilation
US6553690Dec 10, 2001Apr 29, 2003Opal LimitedVentilated footwear
US6729044 *Oct 2, 2002May 4, 2004Francesco VelloVentilated walking shoe
US6865824 *May 14, 2003Mar 15, 2005Levert Francis E.Fluid flow system for spring-cushioned shoe
US7159338Jan 31, 2005Jan 9, 2007Levert Francis EFluid flow system for spring-cushioned shoe
US7503130 *Nov 22, 2004Mar 17, 2009Genesco, Inc.Water draining shoe
US8106320 *Apr 23, 2008Jan 31, 2012Polymatech Co., Ltd.Decorative sheet, decorative molded body, decorative key sheet, and decorative sheet manufacturing method
US9596905 *Apr 13, 2010Mar 21, 2017Geox S.P.A.Midsole structure, particularly for shoes, including shoes with a vapor-permeable sole, designed for use in sports activities
US20030192201 *May 14, 2003Oct 16, 2003Levert Francise E.Fluid flow system for spring-cushioned shoe
US20050120587 *Nov 22, 2004Jun 9, 2005Roy HeltonWater draining shoe
US20050126040 *Jan 31, 2005Jun 16, 2005Levert Francis E.Fluid flow system for spring-cush
US20070214682 *Jan 16, 2007Sep 20, 2007Smotrycz Zenon OVentilated shoe sole construction with improved medical support
US20080209762 *Jan 24, 2008Sep 4, 2008Krafsur Andrew BSpring cushioned shoe
US20080268202 *Apr 23, 2008Oct 30, 2008Polymatech Co., Ltd.Decorative sheet, decorative molded body, decorative key sheet, and decorative sheet manufacturing method
US20120036741 *Apr 13, 2010Feb 16, 2012Geox S.P.A.Midsole structure, particularly for shoes, including shoes with a vapor-permeable sole, designed for use in sports activities
US20140283413 *Mar 22, 2013Sep 25, 2014Reebok International LimitedSole And Article Of Footwear Having A Pod Assembly
US20150265001 *Aug 8, 2012Sep 24, 2015Airfreak AgShoe Sole With Ventilation, And Shoe Having Such A Sole
US20160360832 *Jun 10, 2015Dec 15, 2016Ronie ReubenInsulated sole for article of footwear
US20170042281 *Aug 10, 2016Feb 16, 2017Ariat International, Inc.Heel dampening systems and footwear including the same
USD485426Oct 23, 2002Jan 20, 2004Opal LimitedInsole
EP0326113A2 *Jan 25, 1989Aug 2, 1989Christian BärShoe sole
EP0326113A3 *Jan 25, 1989Jan 16, 1991Christian BärShoe sole
EP0507263A2 *Apr 1, 1992Oct 7, 1992Heinz BenderSock for shoes
EP0507263A3 *Apr 1, 1992Dec 2, 1992Heinz BenderSock for shoes
U.S. Classification36/3.00B
International ClassificationA43B7/00, A43B7/06
Cooperative ClassificationA43B7/06
European ClassificationA43B7/06