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Publication numberUS3863366 A
Publication typeGrant
Publication date4 Feb 1975
Filing date23 Jan 1974
Priority date23 Jan 1974
Publication numberUS 3863366 A, US 3863366A, US-A-3863366, US3863366 A, US3863366A
InventorsHorace Auberry, Sven Oberg, Kenneth Smathers
Original AssigneeRo Search Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Footwear with molded sole
US 3863366 A
Abstract
Improvements in the safety and comfort of footwear having the appearance of having very thick molded soles.
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 1191 11 1 3,863,366

Auberry et al. Feb. 4, 19 75 FOOTWEAR WITH MOLDED SOLE [56] References Cited [75] Inventors: Horace Auberry, Waynesville; Sven UNITED STATES TS Oberg, Lake Ju a uska; Ken et 1,400,143 12/1921 Dial 36/14 Smathers, Waynesville, all of NC. 1,735,986 ll/l929 Wray Assignee: Ro-Search p ated 2,437,030 3/l948 Hoza 36/14 waynesvme Primary ExaminerPatrick D. Lawson [22] Filed: Jan. 23, 1974 Attorney, Agent, or Firm-Dos T. Hatfield 21 A l. N 4

l 1 PP 0 35 651 57 ABSTRACT improvements in the safety and comfort of footwear having the appearance of having very thick molded 581 Field of Search 36/14, 32 R, 25 R 8 Claims, 1 Drawing Figure 1 FOOTWEAR WITH MOLDED SOLE PRIOR ART It is old in the art to stitch an elastomeric welt to the lasting margin of an upper of leather, or similar material, and to mold a sole comprising elastomeric material to the shoe bottom so that the welt forming the upper BRIEF DESCRIPTION OF THE DRAWING The drawing is a sectional view of a portion of the V footwear showing the connection between the upper and sole.

DESCRIPTION OF THE PREFERRED EMBODIMENT The preferred embodiment of the disclosure, as shown in the drawing, includes a sealing strip l secured by stitching 2 to portion 3 of the upper above the level of the insole 4. The strip 1 preferably comprises an extrusion of an elastomer of the thermoplastic type compatible with the elastomer material of the sole 5. The strip 1 can be reinforced by fiber material 6 to strengthen the stitching 2. The upper portion 3 may extend to the insole level and form the lasting margin 7, or it may terminate just below the stitching 2. As an alternative, the portion 8 of the upper may be of a different, less expensive material secured to the strip 1 by stitching 9 or by heat sealing.

The upper is then lasted on a mold last (not shown) by a lasting string 10. Thereafter the sole is attached to the shoe bottom, preferably by the customary injection molding of elastomeric sole material. The sealing edge of the sole mold cavity used for this purpose rests against the strip 1 which includes a ledge 11 essentially parallel to the insole which forms the upper surface of the sole edge 12. The strip 1 also comprises the portion 13 secured to the upper and may also include an upward extension 14 for ornamental purposes.

By locating the strip 1 substantially above the insole level, the thickness of the sole under the insole is a fraction of the apparent thickness of the sole as established by the sole edge 12. The height of the ledge 11 above the shoe sole may be approximately three times the height of the insole surface to satisfy the fashion demand without elevating the insole level to dangerous and uncomfortable heights.

The portion 8 of the upper is tilted inwardly towards the center of the shoe bottom throughout the periphery of the insole to increase the thickness of section l5 of the sole edge 12 even if the projection 16 of the sole edge is kept within the accustomed limits. The thickness of the elastomer section is always more than the thickness of the leather or other material to which it is molded.

Reduction of the weight of the footwear with the appearance of a very heavy sole is obtained by strong slanting of the side surface of the sole edge 12. This makes it possible to provide substantial thickness of the elastomeric material near the strip 1 without an increase in the total weight of the shoe sole. For footwear with a stringlasted upper, a more uniform elastomeric sole is obtained even if the sole thickness is reduced by providing a rim section or part of the insole extending from the feather-edge, i.e. the junction of upper and insole, towards the center of the insole by about half, or less than the width of the lasting margin. The main part of the insole surface is slightly higher than the rim part which allows the elastomeric material of the sole to embed the edge of the lasting margin with the lasting string and also increases the flexibility of the footwear.

What is claimed is:

l. Footwear comprising an upper, a tread sole, said tread sole having a portion thereof extending upwardly to form a peripheral side edge, said sole and side edge being formed of elastomeric material, a strip of material secured to said upper above the insole level and said side edge being molded directly to said strip.

2. Footwear as described in claim 1 wherein said side edge extends upwardly from the bottom of said tread sole a distance at least twice the thickness of said tread sole.

3. Footwear as described in claim 1 wherein said side edge has a thickness substantially the same as said tread sole.

4. Footwear as described in claim 2 wherein said side edge has a thickness substantially the same as said tread sole.

5. Footwear as described in claim 1 wherein said upper includes an extension extending to said sole and said strip is stitched to said upper and to said extension.

6. Footwear as described in claim 1 wherein said strip comprises elastomeric material and is stitched to said upper.

7. Footwear as described in claim 1 wherein the portion of the upper below said strip is tapered inwardly throughout its periphery.

8. Footwear as described in claim 1 wherein the said outer surface of said side edge is tapered towards the center of the shoe.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1400143 *9 Dec 191913 Dec 1921Frank DialShoe construction
US1735986 *26 Nov 192719 Nov 1929Goodrich Co B FRubber-soled shoe and method of making the same
US2437030 *19 Jun 19462 Mar 1948John HozaAttachment of rubber soles to uppers of shoes
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4003145 *1 Aug 197418 Jan 1977Ro-Search, Inc.Footwear
US4236327 *28 Feb 19792 Dec 1980Jones & Vining, IncorporatedWelt
US4306361 *20 Nov 197922 Dec 1981Wolverine World Wide, Inc.Shoe of natural shape
US4658516 *19 Mar 198621 Apr 1987The Timberland CompanyTAP sole construction
US5433021 *18 Oct 199318 Jul 1995Akzo N.V.Waterproof foot covering
US6115940 *16 Nov 199912 Sep 2000Chen; EddieShoe having waterproof lining sleeve and water drainer
US630843913 Dec 200030 Oct 2001Anatomic Research, Inc.Shoe sole structures
US63146629 Mar 200013 Nov 2001Anatomic Research, Inc.Shoe sole with rounded inner and outer side surfaces
US636045330 May 199526 Mar 2002Anatomic Research, Inc.Corrective shoe sole structures using a contour greater than the theoretically ideal stability plan
US64877957 Jun 19953 Dec 2002Anatomic Research, Inc.Shoe sole structures
US659151919 Jul 200115 Jul 2003Anatomic Research, Inc.Shoe sole structures
US666247012 Oct 200116 Dec 2003Anatomic Research, Inc.Shoes sole structures
US666847020 Jul 200130 Dec 2003Anatomic Research, Inc.Shoe sole with rounded inner and outer side surfaces
US66754987 Jun 199513 Jan 2004Anatomic Research, Inc.Shoe sole structures
US667549912 Oct 200113 Jan 2004Anatomic Research, Inc.Shoe sole structures
US670842428 Aug 200023 Mar 2004Anatomic Research, Inc.Shoe with naturally contoured sole
US672904612 Oct 20014 May 2004Anatomic Research, Inc.Shoe sole structures
US6789331 *5 Jun 199514 Sep 2004Anatomic Research, Inc.Shoes sole structures
US687725413 Nov 200212 Apr 2005Anatomic Research, Inc.Corrective shoe sole structures using a contour greater than the theoretically ideal stability plane
US691819726 Sep 200219 Jul 2005Anatomic Research, Inc.Shoe sole structures
US70933798 Nov 200222 Aug 2006Anatomic Research, Inc.Shoe sole with rounded inner and outer side surfaces
US712783411 Apr 200331 Oct 2006Anatomic Research, Inc.Shoe sole structures using a theoretically ideal stability plane
US716818522 Oct 200330 Jan 2007Anatomic Research, Inc.Shoes sole structures
US717465816 May 200513 Feb 2007Anatomic Research, Inc.Shoe sole structures
US728734119 Aug 200430 Oct 2007Anatomic Research, Inc.Corrective shoe sole structures using a contour greater than the theoretically ideal stability plane
US733435612 Jul 200526 Feb 2008Anatomic Research, Inc.Shoe sole structures
US754669923 Apr 200716 Jun 2009Anatomic Research, Inc.Shoe sole structures
US764771031 Jul 200719 Jan 2010Anatomic Research, Inc.Shoe sole structures
US814127621 Nov 200527 Mar 2012Frampton E. EllisDevices with an internal flexibility slit, including for footwear
US820535621 Nov 200526 Jun 2012Frampton E. EllisDevices with internal flexibility sipes, including siped chambers for footwear
US825614725 May 20074 Sep 2012Frampton E. EliisDevices with internal flexibility sipes, including siped chambers for footwear
US829161818 May 200723 Oct 2012Frampton E. EllisDevices with internal flexibility sipes, including siped chambers for footwear
US849432416 May 201223 Jul 2013Frampton E. EllisWire cable for electronic devices, including a core surrounded by two layers configured to slide relative to each other
US856132324 Jan 201222 Oct 2013Frampton E. EllisFootwear devices with an outer bladder and a foamed plastic internal structure separated by an internal flexibility sipe
US856709527 Apr 201229 Oct 2013Frampton E. EllisFootwear or orthotic inserts with inner and outer bladders separated by an internal sipe including a media
US867024624 Feb 201211 Mar 2014Frampton E. EllisComputers including an undiced semiconductor wafer with Faraday Cages and internal flexibility sipes
US873223022 Sep 201120 May 2014Frampton Erroll Ellis, IiiComputers and microchips with a side protected by an internal hardware firewall and an unprotected side connected to a network
US873286812 Feb 201327 May 2014Frampton E. EllisHelmet and/or a helmet liner with at least one internal flexibility sipe with an attachment to control and absorb the impact of torsional or shear forces
DE3840087A1 *28 Nov 198831 May 1990Wagner Lowa SchuhfabSchuh - stichwort: kunststoffzwickrand
Classifications
U.S. Classification36/14
International ClassificationA43B3/00, B29D35/00, B29D35/06
Cooperative ClassificationA43B3/00, B29D35/065
European ClassificationA43B3/00, B29D35/06C