WO2005120275A2 - Footwear with multi-piece midsole - Google Patents
Footwear with multi-piece midsole Download PDFInfo
- Publication number
- WO2005120275A2 WO2005120275A2 PCT/US2005/020146 US2005020146W WO2005120275A2 WO 2005120275 A2 WO2005120275 A2 WO 2005120275A2 US 2005020146 W US2005020146 W US 2005020146W WO 2005120275 A2 WO2005120275 A2 WO 2005120275A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- midsole
- footwear
- molded
- article
- toe
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/14—Multilayered parts
- B29D35/142—Soles
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B1/00—Footwear characterised by the material
- A43B1/0027—Footwear characterised by the material made at least partially from a material having special colours
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/16—Pieced soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
- A43B13/223—Profiled soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/08—Heel stiffeners; Toe stiffeners
- A43B23/081—Toe stiffeners
- A43B23/086—Toe stiffeners made of impregnated fabrics, plastics or the like
- A43B23/087—Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics
Definitions
- Shoes and sandals typically include an upper joined to a sole assembly.
- the sole assembly commonly includes an outsole, a midsole and an insole. While in some cases these components can be cut out of sheet stocks of various types, it is becoming ever more popular particularly in the cases of sport shoes, sport sandals, running shoes and the like to mold the various sole components and join them together using glues, heat and/or pressure.
- We have recently introduced a line of sports shoes and sandals which can be characterized as having a substantial degree of covering over the wearer's toes. In the case of sandals, this provides an unprecedented degree of protection to the wearer's feet and especially toes. It also imparts a distinctive and attractive design element to the footwear and can contribute to durability.
- This toe covering can be achieved by integrally molding the toe protection into the outsole such that when the outsole is incorporated into the footwear the desired toe protection is provided.
- This approach can be seen in United States Patent Numbers D 498,575 and D 498,523, issued from USSNs 29/173,098 and 29/173,099, filed on December 20, 2002.
- the toe protection can also be provided by the combination of a toe cap integrally molded into the midsole and an upward-sweeping toe protection area integrally molded into the outsole to correspond to and cover at least a portion of the integrally-molded toe cap on the midsole.
- This sort of midsole construction presents a difficulty in manufacturing.
- the materials employed in midsoles are most commonly foamed materials that are somewhat flexible and resilient.
- the midsole does serve an important role in defining the overall shape and flexibility of the final footwear product. In this role the midsole needs to have a substantial degree of structure and rigidity. This needs to be accomplished with a molded midsole as molding is the most cost effective and accepted way to form a midsole.
- This means that the shape in which the molded midsole is incorporated into the footwear product should correspond closely to the shape into which it has been molded so that this shape can be maintained during manufacture and into the final footwear product.
- the presence of the integrally-molded toe cap changes this considerably as the overlaying toe piece makes it difficult if not impossible to form the midsole with a conventional two piece mold as the female mold section would essentially surround the outer portion in the toe region with the male section present within the toe section and this would prevent the direct separation of the two mold halves and simple removal of the product midsole.
- the prior art includes the following United States Patents and Applications which describe multi-piece midsoles: United States Patents No. 130,162; 168,051; 3,444,572; 4,676,010; 6,405,456; 6,516,540; and 6,715,218 and Applications No. 2002/0184793 and 2003/0172458.
- this invention provides an article of footwear having a heel and a toe and a longitudinal axis extending there between and comprising a molded midsole and a molded outsole.
- the midsole is formed in multiple separate sections including a forefoot-supporting section having an integrally molded toe cap and a midfoot-and heel-supporting section. These two separately molded sections are affixed to one another at a seam, i.e. joint, intersecting the axis.
- the outsole extends over both sections of the midsole and itself has an integrally-molded section extending upwards over at least a portion of the midsole toe cap. The outsole conceals at least the majority of the joint in the midsole.
- this invention provides a molded midsole for an article of footwear having a heel and a toe and an axis extending there between.
- This midsole is molded in multiple separate sections including a forefoot-supporting section that terminates in an integrally-molded toe cap and a midfoot- and heel-supporting section. These two separate sections are affixed to one another at a seam, i.e. joint, intersecting the axis.
- this invention provides a method for making an article of footwear having a molded outsole and a molded midsole extending from a heel region through a midfoot-supporting section through a forefoot-and toe- supporting section and terminating at the toe end in an integrally-molded toe cap.
- a longitudinal axis runs from the heel of the article of footwear to the toe.
- the outsole also has an integrally-molded toe section extending upwards over at least a portion of the midsole toe cap.
- the midsole is molded in more than one part with the toe-supporting region and midsole toe cap being molded as one part and the remainder of the midsole typically molded as a second part.
- Fig. 1 is an outside elevation view of a multiple piece midsole of the invention for a right foot article of footwear.
- Fig. 2 is a similar outside elevation view of an outsole used in conjunction with the midsole depicted in Fig. 1.
- Fig. 3 is a top plan view of a midsole of the invention in combination with an outsole for a left foot article of footwear having a heel to toe longitudinal axis along line a-a.
- Fig. 4 is a cross-sectional view of the midsole and outsole of Fig. 3 taken along axis a-a.
- Fig. 5 is an outside elevation view of an outsole and a midsole of the present invention.
- Fig. 6 is a bottom plan view of the outsole and midsole depicted in Fig. 5.
- Fig. 7 is an inverted inside elevation view f the outsole and midsole of Fig. 5.
- Fig. 8 is an exploded view of the multi-piece midsole shown in Fig. 1.
- the present invention provides an improved construction for articles of foot wear such as sandals, and shoes such as sport and casual shoes. As shown in Figs. 1 through 4, these articles of footwear include a midsole 10 and an outsole 20.
- the midsole has a toe end or forefoot-supporting end 12 and a rear or heel-supporting end 14. A longitudinal axis extends between these ends along line a-a.
- the toe end of midsole 10 is characterized by having an integrally-molded toe cap 16 which is continuous with the base 18 of midsole 10 and which extends upward and backward, enclosing and covering at least the tips of at least some of the wearer's toes.
- the midsole is made in more than one piece.
- seam 26 As shown, it includes a front or forefoot- supporting piece 22 and a rear foot-supporting piece 24 joined together at joint or seam 26.
- Seam 26 is shown as a stepped seam with relatively vertical sections 28 and 30 adjacent to relatively more horizontal section 32. The purpose of this stepping is to allow the two sections to interact and latch to one another to add strength to the joint 26.
- the joint 26 cuts across longitudinal axis a-a in a plurality of non aligned segments such as a plurality of curved segments and/or a plurality of more linear segments so as to not present a single straight line.
- the segmented joint 26 can be seen as a curved line curving around the areas where the ball of the wearer's foot would commonly be located during use, that is the area adjacent to the wearer's lateral arch.
- the segmented (non-straight) joint offers the additional advantage to permitting the joint to traverse the sole of the article of footwear at least in part in areas away from the maximum flex of the midsole when the article of footwear is being worn. This increases the durability of the midsole and leads to a more continuous and more comfortable flex of the overall sole and its associated article of footwear.
- Fig. 8 shows the two pieces 22 and 24 before they are joined together and further illustrates the step seam 26 with edges of i.e. vertical sections 28 and 30 and relatively more horizontal section 32.
- Outsole 20 has an integrally-molded toe piece 34 as well. Toe piece 34 covers at least a portion of midsole toe piece or toe cap 16. The upper of the shoe or sandal is not shown directly but in Fig. 4 is depicted in phantom as 36 to show how it is affixed to the midsole 10 in the area of the toe cap 16 in one form of construction.
- Outsole 20 is designed to conceal at least a majority of the outside edge 28 and the sides 28, 30 and 32 of seam 26. This can be seen in the cross-section provided in Fig. 4. It can also be seen in Figs. 5, 6, and 7 where the position of the seam 26 is shown by a dark line. It will be appreciated that the seam is substantially covered by outsole 20 including upwardly extending wings 40 and 42 which extend up the side of the midsole in the general area of the edge 28, 30 and 32 of the joint or seam 26 . In Figs. 5, 6 and 7 the outsole 20 is shown with stippling to distinguish it from the midsole which is shown without stippling.
- a substantial advantage or the footwear construction of this invention is the ease of molding of the midsole 10.
- the forefoot section 22 can be molded in a conventional two piece injection mold. So can the rear section 24. If these two sections were combined for molding in a single piece, a much more complicated and expensive molding process would be required to form the cavity under the toe cap 16.
- the materials employed in the present footwear are all relatively conventional.
- the midsole is made from a rubber or plastic material that is typically foamed for light weight.
- the two midsole sections are made of the same foamed rubber or plastic but it is also possible to use different materials for each end so as to vary the properties from the heel to the forefoot and thus to achieve better stability, better cushioning or the like.
- a midsole could be constructed with a more rigid foam in the rear (heel) and midfoot section and a less rigid, more cushioning forefoot section. This construction would provide a shoe with better heel stability and pronation control.
- a shoe having an insole with a softer (less rigid) heel and midfoot section would provide a shoe with better cushioning.
- Representative midsole materials are foamed urethanes or foamed EVAs such as phylon or the like.
- the multiple molded pieces of the midsole can be joined together with an adhesive such as a cyanoacrylate adhesive or a urethane adhesive or a bonding solvent or the like. Heat and pressure can be applied to assist in the bonding and joining process.
- the outsole is formed of a rubber or plastic material that is commonly chosen for its combination of flexibility and durability. Rubbers, including both natural and synthetic rubbers, can be used as can plastics such as urethanes and higher density EVA materials.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2569894A CA2569894C (en) | 2004-06-08 | 2005-06-08 | Footwear with multi-piece midsole |
JP2007527691A JP5148276B2 (en) | 2004-06-08 | 2005-06-08 | Footwear with multi-piece midsole |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57832804P | 2004-06-08 | 2004-06-08 | |
US60/578,328 | 2004-06-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005120275A2 true WO2005120275A2 (en) | 2005-12-22 |
WO2005120275A3 WO2005120275A3 (en) | 2007-02-15 |
Family
ID=35503613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/020146 WO2005120275A2 (en) | 2004-06-08 | 2005-06-08 | Footwear with multi-piece midsole |
Country Status (4)
Country | Link |
---|---|
US (2) | US7290356B2 (en) |
JP (2) | JP5148276B2 (en) |
CA (1) | CA2569894C (en) |
WO (1) | WO2005120275A2 (en) |
Cited By (3)
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EP1972224A1 (en) * | 2007-03-19 | 2008-09-24 | Salomon S.A. | Shoe and its bottom assembly |
US10849387B2 (en) | 2012-09-20 | 2020-12-01 | Nike, Inc. | Sole structures and articles of footwear having plate moderated fluid-filled bladders and/or foam type impact force attenuation members |
US10856612B2 (en) | 2012-09-20 | 2020-12-08 | Nike, Inc. | Sole structures and articles of footwear having plate moderated fluid-filled bladders and/or foam type impact force attenuation members |
Families Citing this family (39)
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AU2004259029B2 (en) | 2003-07-22 | 2009-09-10 | Keen, Inc. | Footwear having an enclosed and articulated toe |
JP5148276B2 (en) * | 2004-06-08 | 2013-02-20 | キーン インコーポレイテッド | Footwear with multi-piece midsole |
ES2398710T3 (en) * | 2005-09-26 | 2013-03-21 | Vibram S.P.A. | Footwear that has independently articulated toes portions |
US7832117B2 (en) * | 2006-07-17 | 2010-11-16 | Nike, Inc. | Article of footwear including full length composite plate |
US20080172904A1 (en) * | 2007-01-22 | 2008-07-24 | David Pelsue | Interchangeable midsole system for footwear |
US20090025260A1 (en) | 2007-07-27 | 2009-01-29 | Wolverine World Wide, Inc. | Sole component for an article of footwear and method for making same |
CA2627262C (en) * | 2008-03-27 | 2014-05-13 | Paul Hubner | Three-piece footwear |
US8631590B2 (en) * | 2008-06-04 | 2014-01-21 | Nike, Inc. | Article of footwear for soccer |
WO2010037028A1 (en) * | 2008-09-26 | 2010-04-01 | Nike International Ltd. | Systems and methods for utilizing phylon biscuits to produce a regionalized-firmness midsole |
BRPI0919474A2 (en) * | 2008-09-26 | 2017-05-30 | Nike Int Ltd | shoes with a flat-formed leather |
EP2346366A1 (en) * | 2008-10-20 | 2011-07-27 | Simon La Rochelle | Safety footwear |
US8316558B2 (en) * | 2008-12-16 | 2012-11-27 | Skechers U.S.A., Inc. Ii | Shoe |
IT1395865B1 (en) * | 2009-06-30 | 2012-10-26 | Novation Motorbike S P A | FOOTWEAR WITH PROTECTION TIP |
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US9521877B2 (en) * | 2013-02-21 | 2016-12-20 | Nike, Inc. | Article of footwear with outsole bonded to cushioning component and method of manufacturing an article of footwear |
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JP5688168B2 (en) * | 2011-03-18 | 2015-03-25 | コロンビア スポーツウエア ノース アメリカ、インコーポレイテッド | High stability multi-density midsole |
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WO2014115284A1 (en) * | 2013-01-24 | 2014-07-31 | 株式会社アシックス | Shoes and method for manufacturing same |
US20140259779A1 (en) * | 2013-03-15 | 2014-09-18 | Javanscience Llc | Modular Shoe Systems and Methods of Using Same |
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US11602193B2 (en) * | 2015-10-06 | 2023-03-14 | L.P. Royer Inc. | Safety footwear |
US11344080B2 (en) | 2016-11-14 | 2022-05-31 | Deckers Outdoor Corporation | Footwear including a stabilizing sole |
US10561199B2 (en) * | 2016-11-14 | 2020-02-18 | Deckers Outdoor Corporation | Footwear including a stabilizing sole |
US20180255869A1 (en) * | 2017-03-09 | 2018-09-13 | Columbia Insurance Company | Outsole and Method of Making the Same |
CN110461183B (en) * | 2017-03-17 | 2022-03-29 | 耐克创新有限合伙公司 | Toe cap part of track and field shoes |
GB2568713A (en) * | 2017-11-24 | 2019-05-29 | James Norris Kevin | A device for an item of footwear |
AU2020279341A1 (en) * | 2019-05-17 | 2021-12-23 | Asics Corporation | Shoe |
US11510459B2 (en) * | 2019-08-29 | 2022-11-29 | Nike, Inc. | Outsole for an article of footwear |
US20220160077A1 (en) * | 2020-11-24 | 2022-05-26 | Nike, Inc. | Sole structure for article of footwear |
USD972262S1 (en) * | 2021-12-16 | 2022-12-13 | Nike, Inc. | Shoe |
USD972272S1 (en) * | 2021-12-16 | 2022-12-13 | Nike, Inc. | Shoe |
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DE20107343U1 (en) | 2001-04-27 | 2001-07-19 | Giambalvo Salvatore | Running shoe |
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AU2004259029B2 (en) * | 2003-07-22 | 2009-09-10 | Keen, Inc. | Footwear having an enclosed and articulated toe |
JP5148276B2 (en) * | 2004-06-08 | 2013-02-20 | キーン インコーポレイテッド | Footwear with multi-piece midsole |
-
2005
- 2005-06-08 JP JP2007527691A patent/JP5148276B2/en not_active Expired - Fee Related
- 2005-06-08 US US11/148,701 patent/US7290356B2/en active Active
- 2005-06-08 CA CA2569894A patent/CA2569894C/en not_active Expired - Fee Related
- 2005-06-08 WO PCT/US2005/020146 patent/WO2005120275A2/en active Application Filing
-
2007
- 2007-09-27 US US11/862,428 patent/US7762012B2/en active Active
-
2012
- 2012-01-27 JP JP2012015488A patent/JP5313371B2/en not_active Expired - Fee Related
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US2229387A (en) * | 1939-10-20 | 1941-01-21 | Parker Clarence William | Sole protector for rubber boots |
US5285583A (en) * | 1990-07-27 | 1994-02-15 | Terra Nova Shoes Ltd. | Puncture resistant insole for safety footwear |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1972224A1 (en) * | 2007-03-19 | 2008-09-24 | Salomon S.A. | Shoe and its bottom assembly |
US10849387B2 (en) | 2012-09-20 | 2020-12-01 | Nike, Inc. | Sole structures and articles of footwear having plate moderated fluid-filled bladders and/or foam type impact force attenuation members |
US10856612B2 (en) | 2012-09-20 | 2020-12-08 | Nike, Inc. | Sole structures and articles of footwear having plate moderated fluid-filled bladders and/or foam type impact force attenuation members |
Also Published As
Publication number | Publication date |
---|---|
US20080010855A1 (en) | 2008-01-17 |
CA2569894C (en) | 2012-05-01 |
CA2569894A1 (en) | 2005-12-22 |
JP5313371B2 (en) | 2013-10-09 |
US7290356B2 (en) | 2007-11-06 |
WO2005120275A3 (en) | 2007-02-15 |
JP2008501487A (en) | 2008-01-24 |
JP5148276B2 (en) | 2013-02-20 |
US20050268492A1 (en) | 2005-12-08 |
US7762012B2 (en) | 2010-07-27 |
JP2012130713A (en) | 2012-07-12 |
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