GB2031265A - Improvements relating to footwear - Google Patents

Improvements relating to footwear Download PDF

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Publication number
GB2031265A
GB2031265A GB7931547A GB7931547A GB2031265A GB 2031265 A GB2031265 A GB 2031265A GB 7931547 A GB7931547 A GB 7931547A GB 7931547 A GB7931547 A GB 7931547A GB 2031265 A GB2031265 A GB 2031265A
Authority
GB
United Kingdom
Prior art keywords
flange
unit
article
sole
polyurethane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7931547A
Other versions
GB2031265B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clarks Ltd
Original Assignee
Clarks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clarks Ltd filed Critical Clarks Ltd
Priority to GB7931547A priority Critical patent/GB2031265B/en
Publication of GB2031265A publication Critical patent/GB2031265A/en
Application granted granted Critical
Publication of GB2031265B publication Critical patent/GB2031265B/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B9/00—Footwear characterised by the assembling of the individual parts
    • A43B9/10—Footwear with out-turned uppers

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A boot or shoe comprises a moulded sole unit having at its upper edge an outwardly directed flange 11 to which is secured the out-turned edge 13 of the upper, the sole unit being moulded from polyurethane and having the flange and the side 14b and bottom 14a wall portions of the unit of higher density than the central portions of the unit. In a preferred construction the higher density portions of the sole unit form a shell within which the lower density central portion is moulded subsequently. <IMAGE>

Description

SPECIFICATION Improvements relating to footwear This invention relates to footwear.
According to this invention there is provided an article of footwear comprising a moulded polyurethane sole unit which provides the sole and heel of the article and which has at or adjacent its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the sole unit having a central portion bounded at its sides and bottom by side wall and bottom wall portions respectively which together with the flange are of higher density than the central portion.
The invention also provides an article of footwear comprising a moulded sole unit which provides the sole and heel of the article and which has at its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the flange and side and bottom wall portions of the sole unit defining a shell which is made from polyurethane and which is filled with a flexible material having a lower density than that of the shell.
According to a preferred feature of the invention, the shell and the filling are both made from polyurethane, the material of the filling being in the form of a foam. The polyurethane of the shell is preferably solid or virtually solid.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a perspective view of a completed article of footwear according to the invention, and Figure 2 is a sectional view on the line 2-2 of Figure 1.
Referring to the drawings, a boot is shown comprising a sole unit 10 having at its upper edge a laterally outwardly directed flange 11 which extends along the whole length of the periphery of the unit, and an upper 12 the lower edge 13 of which is turned outward and stitched to the flange 11.
The sole unit is of the wedge heel type and comprises a moulded outer shell 14, providing the bottom wall 1 4a, the side walls 1 4b and the flange 1 and a filling 1 5 the upper surface of which is smooth and continuous and flush with the top surface of the flange. The sole unit is manufactured in two stages. In the first stage the ehell is moulded from virtually solid polyurethane, and in the second stage the shell is filled with polyurethane foam. The thickness of the shell is preferably in the range 3 to 4 mm.The sole unit thus has wearing surfaces which are robust and well adapted to withstand the wear and constant flexing, and has a foot-supporting central portion made from a filling which is comfortable to the wearer and which readily accommodates the small variations in length occurring as the unit flexes in wear.
If desired the top surface of the sole unit may be covered by a sock 1 7 and the outer edge of the sock may be secured between the flange and the upper as shown.
1. An article of footwear comprising a moulded polyurethane sole unit which provides the sole and heel of the article and which has at or adjacent its upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the sole unit having a central portion bounded at its sides and bottom by side wall and bottom wall portions respectively which together with the flange are of higher density than the central portion.
2. An article of footwear comprising a moulded sole unit which provides the sole and heel of the article and which has at its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the flange and side and bottom wall portions of the sole unit defining a shell which is made from polyurethane and which is filled with a flexible material having a lower density than that of the shell.
3. An article as claimed in claim 2, wherein the filling comprises a foamed polyurethane material.
4. An article as claimed in any one of claims 1 to 3, wherein the said flange and side and bottom wall portions of the sole unit are made from solid or substantially solid polyurethane.
5. An article of footwear substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements relating to footwear This invention relates to footwear. According to this invention there is provided an article of footwear comprising a moulded polyurethane sole unit which provides the sole and heel of the article and which has at or adjacent its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the sole unit having a central portion bounded at its sides and bottom by side wall and bottom wall portions respectively which together with the flange are of higher density than the central portion. The invention also provides an article of footwear comprising a moulded sole unit which provides the sole and heel of the article and which has at its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the flange and side and bottom wall portions of the sole unit defining a shell which is made from polyurethane and which is filled with a flexible material having a lower density than that of the shell. According to a preferred feature of the invention, the shell and the filling are both made from polyurethane, the material of the filling being in the form of a foam. The polyurethane of the shell is preferably solid or virtually solid. One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a perspective view of a completed article of footwear according to the invention, and Figure 2 is a sectional view on the line 2-2 of Figure 1. Referring to the drawings, a boot is shown comprising a sole unit 10 having at its upper edge a laterally outwardly directed flange 11 which extends along the whole length of the periphery of the unit, and an upper 12 the lower edge 13 of which is turned outward and stitched to the flange 11. The sole unit is of the wedge heel type and comprises a moulded outer shell 14, providing the bottom wall 1 4a, the side walls 1 4b and the flange 1 and a filling 1 5 the upper surface of which is smooth and continuous and flush with the top surface of the flange. The sole unit is manufactured in two stages. In the first stage the ehell is moulded from virtually solid polyurethane, and in the second stage the shell is filled with polyurethane foam. The thickness of the shell is preferably in the range 3 to 4 mm.The sole unit thus has wearing surfaces which are robust and well adapted to withstand the wear and constant flexing, and has a foot-supporting central portion made from a filling which is comfortable to the wearer and which readily accommodates the small variations in length occurring as the unit flexes in wear. If desired the top surface of the sole unit may be covered by a sock 1 7 and the outer edge of the sock may be secured between the flange and the upper as shown. CLAIMS
1. An article of footwear comprising a moulded polyurethane sole unit which provides the sole and heel of the article and which has at or adjacent its upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the sole unit having a central portion bounded at its sides and bottom by side wall and bottom wall portions respectively which together with the flange are of higher density than the central portion.
2. An article of footwear comprising a moulded sole unit which provides the sole and heel of the article and which has at its outer upper edge a laterally outwardly projecting flange extending along the full length of the periphery of the unit so as to form a laterally facing rebate beneath the flange, and an upper the lower edge portion of which is turned outward and secured to the top surface of the flange, the flange and side and bottom wall portions of the sole unit defining a shell which is made from polyurethane and which is filled with a flexible material having a lower density than that of the shell.
3. An article as claimed in claim 2, wherein the filling comprises a foamed polyurethane material.
4. An article as claimed in any one of claims 1 to 3, wherein the said flange and side and bottom wall portions of the sole unit are made from solid or substantially solid polyurethane.
5. An article of footwear substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB7931547A 1978-09-15 1979-09-11 Footwear Expired GB2031265B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7931547A GB2031265B (en) 1978-09-15 1979-09-11 Footwear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7836965 1978-09-15
GB7931547A GB2031265B (en) 1978-09-15 1979-09-11 Footwear

Publications (2)

Publication Number Publication Date
GB2031265A true GB2031265A (en) 1980-04-23
GB2031265B GB2031265B (en) 1982-11-03

Family

ID=26268863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7931547A Expired GB2031265B (en) 1978-09-15 1979-09-11 Footwear

Country Status (1)

Country Link
GB (1) GB2031265B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772563A1 (en) * 1997-12-22 1999-06-25 Ferrand Ets Slipper with upper fixed to perimeter of sole
EP1844672A1 (en) * 2006-04-14 2007-10-17 Ideaslab SNC Shoe and associated manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772563A1 (en) * 1997-12-22 1999-06-25 Ferrand Ets Slipper with upper fixed to perimeter of sole
EP1844672A1 (en) * 2006-04-14 2007-10-17 Ideaslab SNC Shoe and associated manufacturing method
US7823238B2 (en) 2006-04-14 2010-11-02 Ideaslab SNC di Marcerta Benito Shoe and associated manufacturing method

Also Published As

Publication number Publication date
GB2031265B (en) 1982-11-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920911