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Publication numberUS2200849 A
Publication typeGrant
Publication dateMay 14, 1940
Filing dateDec 18, 1939
Priority dateDec 18, 1939
Publication numberUS 2200849 A, US 2200849A, US-A-2200849, US2200849 A, US2200849A
InventorsMorris N Margolin
Original AssigneeMorris N Margolin
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inner sole
US 2200849 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

May B4, 1940.

M. N. MARGOLIN INNER SOLE Filed Dec. 18,v 1959 721/6701107". y /f/ayalne /Varr/f Patented Moy 14., 1940 ParlazNT OFFICE- INNER soLE Morris N. Margoiin, chicago, nl.

Application December 18, 1939, Serial No. 309,783 z claims. (ci. :i6- 3) This invention relates to improvements in inner soles of shoes, and particularly to inner soles of the class having a substituted material inserted and combined therewith Ato provide a limited area of greater resiliency and flexibility.

Inner soles of this class have heretofore been known and in general provide for the insertion of some resilient material, such as rubber, sponge rubber, or other suitable material into an opening formed in the fore part for the purpose of providing better metatarsal support, greater flexibility, and general increased comfort in thewearing of the shoe.

'Ihe desirability and importance of making provision for breathing of the shoe and the provision of means for permitting free penetration of air particularly through. the insert material has also been recognized. This has generally been accomplishedv heretofore by means of perforations extending through the thickness of the insert material. Such provision has, however, been largely ineiectual for the reason that the perforations become collapsed or closed in use, particularly when formed through a sole thickness of resilient material, and have required insertion of non-resilient bosses or the' like expedients which introduce protuberances'and add elements of undesirability and discomfort which the in- Sert was primarily intended to eliminate.

Likewise it has been recognized that although it is desirable to utilizev inserts of substantial surface area on the fore part of the inner sole, dimculties in the manufacture and assembly have been encountered due to distortion of the apertured inner sole when being worked upon in the construction of the shoe resulting in displacement of the insert, the requirement of temporary retaining means with attendant inefficiencies and uneconomical operation, and the added tendency toward displacement vand distortion during use of the shoe.

It is therefore an object of this invention to provide an inner sole of the class having a substituted material in the forel part thereof for aiding in metatarsal support, flexibility, resiliency I and general improved comfort wherein breathing means are provided without the requirement for 'additional perforation maintenance means and which atthe same time provides for an increased breathing area and effective ventilation means.

Another object is to provide the fore part of the inner sole with a plurality ofapertures extending over an effectual surface area thereof and a unitary substituted ,material insert therefor which will 'render assembly andinterlodging of the respective portions simple and expedient and which will prevent distortion during assembly and use without the requirement of temporary or permanent retaining means. 1

. Other objects relates to economies of operation and construction and the details and arrangement of parts which'will be apparent from A a consideration of the following specification and drawing, wherein: Fig. 1 is a fragmentary longitudinal section 'through' a shoe illustrating my improved construction. y

Fig. 2 is a plan view of the fore partrof an inner sole made in accordance with my invention, on the line 2-2 of Fig. 1.` y Fig. 3 is a section on the line 3-3 of Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 2.4 Fig. 5 is a bottom view of composite inner sole portion shown in Fig. 2. l

Fig, 6`illustrates the apertured portions of the inner sole adapted to receive the unitary insert and overlay.

Referring to thedrawing, the shoe I0 conventionally comprises the outer sole II, inner sole I2, and a stockinglining (not shown), overlying the inner sole. The inner sole generally is formed of leather, and instead of providing a single vaperture for the reception of `the insert, I provide va plurality of apertures, preferably longitudinally spaced and substantially aligned on the fore part of the inner sole, or as illusbetween the marginal side portions of the inner sole apertured area servesto act as means for preventing distortion of the inner sole byv reason of the aperturing thereof, particularly during the shoe assembly, while at the same time permitting the insertion of the metasarsal cushion support without detriment thereto.V As a matter of fact this construction serves to more fully at all times retain the insert cushion in proper position,v and serves as a means for preventing marginal displacement and twisting .movement during use of the shoe.

'I'he insert which may be of soft rubber, sponge. rubber. orA the like resilient and flexible material 2 Y comprises the overlay portion I6 and the d epending cushion portions I1 and I8, the whole of the insert being integral. The overlay portion I6 of the insert is formed to have a surface extent embracing all of the apertures and to overlie the marginal vportions thereof, terminating -in a tapered and converging edge, as at I9. The cushion portions I1 and I8 are of a contour adapted to snugly lit within the apertures I3 and Il respectively, and thus the composite inner sole Vcomprises the overlay I6 embracing substantially the major portion of the fore part of the inner sole, and having unitaryl integral downwardly projectingcushions, in substantially symmetrical aligned relationship to the overlay, but withal spaced apart-bya unitary cross brace, which not only braces the apertured inner solebut also serves to more securely engage, retain and position the respective cushions. y

`It will. be further noted that each of the cushions Il van'd I8 are formed of a plurality of spaced apart sectors or projections, or the y cushions may be considered to be divided into a plurality of 'spaced apart areas by means of the channels 20 which extend substantially longi tudinally and transversely of the shoe, thus giving added flexibility along the lines of natural flexing of the shoe in use, and may permit the vuse of cushioning material heretofore considered unsuitable. A'li'he insert also comprises breathing or Ventilating means formed in part by the perforations ZI which extend through the overlay I8 land open downwardly into the channeled areas l 2|! to form therewith an enlarged air circulation space. .It will also readily be seen that since the perforations 2| `do not extend through the entire thickness of the cushions I1 and Il, iiexing and compression will not pinch or collapse the perforations and without the aid of supports be at all times in full communication with the channels and in addition each perforation will be in communication with the entire channeled area ofA breathing and ventilation.

I claim as my invention:

its respective cushion to provide a` Imaximum of 1. An article ofthe class described comprising an inner sole having a plurality of apertures` formed in the fore partthereof, adjacent apertures being spaced apart by a transversely extending integral inner sole portion, a unitary overlay on said inner sole embracing all of the apertured area thereof and resilientilexible inserts integral 'with said overlay depending therefrom and fitting Within said apertures, the said inserts being" divided into a plurality of spaced'apart sections and the said overlay being provided with a plui rality of perforations opening downwardly between said sections.

2. An article of the class` described comprising an inner sole having a plurality of apertures formed in the fore part thereof, the said aperversely and the said overlay being. formed with. a 35 Y plurality of perforations extending therethrough ,Y and into the channels formed by said grooves.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2504704 *Sep 25, 1945Apr 18, 1950Lee Mary FrancesCombined arch and sole footpad
US4793078 *Apr 23, 1987Dec 27, 1988Andrews Anthony CInsoles for footwear
US4845863 *Sep 16, 1988Jul 11, 1989Autry Industries, Inc.Shoe having transparent window for viewing cushion elements
US5732485 *Apr 11, 1994Mar 31, 1998Schering-Plough Healthcare Products, Inc.Foot and shoe deodorizer
US5829167 *Sep 29, 1997Nov 3, 1998Valenzuela; JamieOdor absorbing pads for shoes
US6000147 *Jul 17, 1998Dec 14, 1999KellermanThree section orthotic device
US7493230Jun 6, 2006Feb 17, 2009Aetrex Worldwide, Inc.Method and apparatus for customizing insoles for footwear
US7536808Jan 27, 2006May 26, 2009Nike, Inc.Breathable sole structures and products containing such sole structures
US7918041Sep 4, 2007Apr 5, 2011Nike, Inc.Footwear cooling system
US8191284Jan 7, 2011Jun 5, 2012Nike, Inc.Footwear cooling system
US9333106Nov 30, 2011May 10, 2016Ossur HfCircumferential walker
US9468553Jul 7, 2015Oct 18, 2016Ossur HfCircumferential walker
US9492301Jul 26, 2013Nov 15, 2016Ossur HfCircumferential walker
US20060168847 *Jan 27, 2006Aug 3, 2006Nike, Inc.Breathable sole structures and products containing such sole structures
US20070282562 *Jun 6, 2006Dec 6, 2007Evan SchwartzMethod and apparatus for customizing insoles for footwear
US20090056172 *Sep 4, 2007Mar 5, 2009Nike, Inc.Footwear Cooling System
USD315634Aug 25, 1988Mar 26, 1991Autry Industries, Inc.Midsole with bottom projections
USD772418Sep 17, 2015Nov 22, 2016Ossur HfShell for an orthopedic device
USD776288Sep 17, 2015Jan 10, 2017Ossur HfShell for an orthopedic device
USD776289Sep 17, 2015Jan 10, 2017Ossur HfShell for an orthopedic device
U.S. Classification36/3.00B, 36/44
International ClassificationA43B13/38, A43B7/06
Cooperative ClassificationA43B13/141, A43B13/38, A43B7/06, A43B1/0009
European ClassificationA43B1/00A, A43B13/14F, A43B13/38, A43B7/06