EP0260777A2 - Shoe Soles - Google Patents

Shoe Soles Download PDF

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Publication number
EP0260777A2
EP0260777A2 EP19870300873 EP87300873A EP0260777A2 EP 0260777 A2 EP0260777 A2 EP 0260777A2 EP 19870300873 EP19870300873 EP 19870300873 EP 87300873 A EP87300873 A EP 87300873A EP 0260777 A2 EP0260777 A2 EP 0260777A2
Authority
EP
European Patent Office
Prior art keywords
foot
sole
forwardly
shoe
groove
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
EP19870300873
Other languages
German (de)
French (fr)
Other versions
EP0260777A3 (en
EP0260777B1 (en
Inventor
Malcom George Blissett
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.)
Wolverine World Wide Inc
Original Assignee
Wolverine World Wide Inc
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 Wolverine World Wide Inc filed Critical Wolverine World Wide Inc
Priority to AT87300873T priority Critical patent/ATE91855T1/en
Publication of EP0260777A2 publication Critical patent/EP0260777A2/en
Publication of EP0260777A3 publication Critical patent/EP0260777A3/en
Application granted granted Critical
Publication of EP0260777B1 publication Critical patent/EP0260777B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A43B13/14—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

Definitions

  • This invention relates to footwear and particularly to a multidirectional toe-off shoe sole structure.
  • Shoe soles have had a variety of features imparted to them over the years, often for the purpose of accommodating the natural action of the foot structure during locomotion, and/or improving foot action that is defective in some respect.
  • the human foot is a series of complex arrangements of bones, tendons, ligaments and muscles which produce a sequence of cooperative lateral and longitudinal movements during use. Although a great deal is presently known concerning these foot movements, understanding thereof is yet incomplete.
  • understanding thereof is yet incomplete.
  • each person's foot varies considerably from those of others, efforts are constantly made to improve footwear for optimizing locomotion action. Yet, because shoes must be mass produced for practical reasons, accommodating the variety of individual foot peculiarities is not totally possible.
  • An object of this invention is to provide a special shoe structure which will aid in accommodating differing individual feet with a mass produced shoe and is directed to improving a shoe sole comprising an elongated sole having a bottom surface, an upper surface and a periphery including medial and lateral sides, the upper surface having a rear portion for engaging the heel of a foot, a narrow central portion to be beneath the instep of the foot, a wide portion to underlie and engage the metatarsal heads of the foot and a narrowing region forwardly of the wide portion for underlying the inner space of the foot occurring just forwardly of the metatarsal heads and engaging the forward ends of the phalanges of the foot.
  • the sole has a curvilinear groove in the bottom surface at the said narrowing region forwardly of the said wide portion, extending from the medial side, forwardly and then rearwardly in the arc to the lateral side, configurated and located to underlie the inner space of the foot forwardly of the metatarsal heads for allowing toe-off in a variety of forward directions.
  • the present invention thus provides a shoe having a novel sole structure for increasing accommodation of the shoe to the peculiarities of individual varying foot action by allowing toe-off for proper weight transfer through the gait cycle at any forward angle.
  • the almost infinite number of directions of weight transfer from the shoe enables proper toe-off for the peculiarities of the particular foot. It accommodates individual variations in bone alignment of the forefoot structure, and aids in extension of the phalanges at toe-off.
  • the radius of the flex groove addresses rotational shear in the forefoot encompassed during resupination of the foot.
  • the arc of the groove has its forwardmost apex laterally off centre of the sole toward the medial side.
  • the groove may have various cross-sections, but preferably has in cross-sectional configuration a concave curved upper portion blending into convex curved junctures with the said bottom surface.
  • the invention also includes, according to another aspect, a shoe comprising an upper connected to a sole having the curvilinear groove referred to above.
  • FIG. 1 The drawings show a casual shoe l0 which has an upper l2 secured around the periphery 26 of a sole member l4.
  • This sole has a lower ground-engaging surface l4a and an upper foot-engaging surface l4b.
  • An inner sole (not shown) or other conventional components may be employed as desired in conjunction with the upper surface l4b.
  • This sole has a conventional heel portion l6 to accommodate the area underlying the heel of a human foot F contained in the shoe, and a narrow intermediate portion l8 which underlies the instep of the foot.
  • the sole then widens out in conventional fashion toward the front of the shoe to the widest portion 20 which underlies the metatarsal heads of the foot bone structure.
  • the forwardmost portion 22 of the sole then narrows from this widest portion, and underlies the phalanges of the foot.
  • a special curvilinear groove 24 Beginning immediately forwardly of the widest portion 20, so as to be forward of the metatarsal heads, is a special curvilinear groove 24. Specifically, it is directly beneath the "inner space" of the foot existing between the metatarsal heads and the forward, ground-engaging portions of the phalanges. This curvilinear groove lies beneath the rearward phalangeal bones.
  • the groove extends between the lateral side 24a of sole periphery 26 and the medial side 24b, in an arcuate path projecting forwardly of the sole from these two sides.
  • the forwardmost apex portion 24c of the groove is laterally offset from the centre of the sole, toward the medial side, so that it is slightly toward the centre of the sole from the great toe.
  • This special groove 24 enables an almost infinite number of forward directions of flex and weight transfer upon toe-off during locomotion.
  • the cross-sectional configuration of the groove is preferably smoothly curved, having at its upper deepest portion a concave generally semicircular curvature (Figure l), while merging gradually into two convex curved edge portions blending with the bottom surface l4a of the sole.
  • the curvilinear configuration of the groove from side to side adds volume to the groove to aid flexibility and enable further extension of the phalanges at toe-off.
  • the ability of the curve of the flex groove to address an almost infinite number of forward directions of movement in a casual shoe facilitates proper weight transfer through the entire gait cycle.
  • the radius of the flex groove addresses rotational shear in the forefoot, encompassed during resupination of the foot.
  • the depth of the groove may vary somewhat. Used in conjunction with a unitary type sole, the flex groove may be considerably deeper for more surface area in the groove, which in turn results in increased flexibility.
  • the usual basic pattern of foot to ground engagement is depicted by the dash-line sequence 25 in Figure 3.
  • it begins at 25a at the heel, proceeds toward the metatarsal head 25b at the lateral side of the foot, then across the metatarsal heads to the head 25c behind the great toe on the medial side.
  • the fleshy material 27 forwardly of the metatarsal heads and then the forward ends of the toes provide the engagement area, with the phalanges being extended for a springing action in the forward direction.
  • Toe-off for the particular person's foot may be directly ahead as per the arrows in Figure 5.
  • toe-off direction can differ angularly from straight ahead.
  • the novel sole readily accommodates any such individual locomotion toe-off direction characteristic because of the curvilinear groove which enables sole bending at that angular direction, for smooth comfortable action.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Pens And Brushes (AREA)
  • Confectionery (AREA)

Abstract

SHOE SOLES
A shoe sole (l4) having at its bottom surface (l4a) a curvilinear flex groove (24) located at the narrowing region (22) forwardly of the wider region (20) of the shoe sole and extending from the medial side (24b) to the lateral side (24a) in a forwardly oriented arc having its forwardmost portion (24c) offset toward the medial side (24b), to underlie the inner space of the foot forwardly of the metatarsal heads and rearwardly of the phalangeal portions that serve for surface engagement.

Description

  • This invention relates to footwear and particularly to a multidirectional toe-off shoe sole structure.
  • Shoe soles have had a variety of features imparted to them over the years, often for the purpose of accommodating the natural action of the foot structure during locomotion, and/or improving foot action that is defective in some respect. It is known that the human foot is a series of complex arrangements of bones, tendons, ligaments and muscles which produce a sequence of cooperative lateral and longitudinal movements during use. Although a great deal is presently known concerning these foot movements, understanding thereof is yet incomplete. Moreover, because each person's foot varies considerably from those of others, efforts are constantly made to improve footwear for optimizing locomotion action. Yet, because shoes must be mass produced for practical reasons, accommodating the variety of individual foot peculiarities is not totally possible. An object of this invention is to provide a special shoe structure which will aid in accommodating differing individual feet with a mass produced shoe and is directed to improving a shoe sole comprising an elongated sole having a bottom surface, an upper surface and a periphery including medial and lateral sides, the upper surface having a rear portion for engaging the heel of a foot, a narrow central portion to be beneath the instep of the foot, a wide portion to underlie and engage the metatarsal heads of the foot and a narrowing region forwardly of the wide portion for underlying the inner space of the foot occurring just forwardly of the metatarsal heads and engaging the forward ends of the phalanges of the foot. According to the present invention, the sole has a curvilinear groove in the bottom surface at the said narrowing region forwardly of the said wide portion, extending from the medial side, forwardly and then rearwardly in the arc to the lateral side, configurated and located to underlie the inner space of the foot forwardly of the metatarsal heads for allowing toe-off in a variety of forward directions.
  • The present invention thus provides a shoe having a novel sole structure for increasing accommodation of the shoe to the peculiarities of individual varying foot action by allowing toe-off for proper weight transfer through the gait cycle at any forward angle. The almost infinite number of directions of weight transfer from the shoe enables proper toe-off for the peculiarities of the particular foot. It accommodates individual variations in bone alignment of the forefoot structure, and aids in extension of the phalanges at toe-off. The radius of the flex groove addresses rotational shear in the forefoot encompassed during resupination of the foot.
  • Preferably, the arc of the groove has its forwardmost apex laterally off centre of the sole toward the medial side. The groove may have various cross-sections, but preferably has in cross-sectional configuration a concave curved upper portion blending into convex curved junctures with the said bottom surface.
  • The invention also includes, according to another aspect, a shoe comprising an upper connected to a sole having the curvilinear groove referred to above.
  • The invention may be carried into practice in various ways but one shoe embodying the invention will now be described by way of example with reference to the accompanying drawings in which:
    • Figure l is a side elevational view of the shoe;
    • Figure 2 is a bottom view of the shoe in Figure l;
    • Figure 3 is a photo reproduction of an ink blot footprint plus a dash-line diagrammatic indication of the shoe sole outline, a dash-line indication of the progressive line of contact of the foot to the ground, and an indication of the location of the flex groove forwardly of the metatarsal heads and behind the ground engaging portions of the phalanges;
    • Figure 4 is a side elevational diagrammatic view of a foot showing the location of the inner space under which the flex groove lies; and
    • Figure 5 is a bottom view of a foot diagrammatically showing the location of the flex groove beneath the inner space.
  • The drawings show a casual shoe l0 which has an upper l2 secured around the periphery 26 of a sole member l4. This sole has a lower ground-engaging surface l4a and an upper foot-engaging surface l4b. An inner sole (not shown) or other conventional components may be employed as desired in conjunction with the upper surface l4b.
  • This sole has a conventional heel portion l6 to accommodate the area underlying the heel of a human foot F contained in the shoe, and a narrow intermediate portion l8 which underlies the instep of the foot. The sole then widens out in conventional fashion toward the front of the shoe to the widest portion 20 which underlies the metatarsal heads of the foot bone structure. The forwardmost portion 22 of the sole then narrows from this widest portion, and underlies the phalanges of the foot.
  • Beginning immediately forwardly of the widest portion 20, so as to be forward of the metatarsal heads, is a special curvilinear groove 24. Specifically, it is directly beneath the "inner space" of the foot existing between the metatarsal heads and the forward, ground-engaging portions of the phalanges. This curvilinear groove lies beneath the rearward phalangeal bones.
  • The groove extends between the lateral side 24a of sole periphery 26 and the medial side 24b, in an arcuate path projecting forwardly of the sole from these two sides. The forwardmost apex portion 24c of the groove is laterally offset from the centre of the sole, toward the medial side, so that it is slightly toward the centre of the sole from the great toe. This special groove 24 enables an almost infinite number of forward directions of flex and weight transfer upon toe-off during locomotion.
  • The cross-sectional configuration of the groove is preferably smoothly curved, having at its upper deepest portion a concave generally semicircular curvature (Figure l), while merging gradually into two convex curved edge portions blending with the bottom surface l4a of the sole.
  • The curvilinear configuration of the groove from side to side adds volume to the groove to aid flexibility and enable further extension of the phalanges at toe-off. The ability of the curve of the flex groove to address an almost infinite number of forward directions of movement in a casual shoe facilitates proper weight transfer through the entire gait cycle. The radius of the flex groove addresses rotational shear in the forefoot, encompassed during resupination of the foot. The depth of the groove may vary somewhat. Used in conjunction with a unitary type sole, the flex groove may be considerably deeper for more surface area in the groove, which in turn results in increased flexibility.
  • In use of the shoe sole for walking, the usual basic pattern of foot to ground engagement is depicted by the dash-line sequence 25 in Figure 3. As is known, it begins at 25a at the heel, proceeds toward the metatarsal head 25b at the lateral side of the foot, then across the metatarsal heads to the head 25c behind the great toe on the medial side. During subsequent toe-off, the fleshy material 27 forwardly of the metatarsal heads and then the forward ends of the toes provide the engagement area, with the phalanges being extended for a springing action in the forward direction. Toe-off for the particular person's foot may be directly ahead as per the arrows in Figure 5. Yet with different people and their own unique foot structures, toe-off direction can differ angularly from straight ahead. The novel sole readily accommodates any such individual locomotion toe-off direction characteristic because of the curvilinear groove which enables sole bending at that angular direction, for smooth comfortable action.
  • Certain additional advantages and slight modifications of the structure may, of course, be visualized by those in the art upon studying the foregoing and the illustrated preferred embodiment.

Claims (4)

1. A shoe sole (l4) comprising an elongated sole having a bottom surface (l4a), an upper surface (l4b) and a periphery (26) including medial (24b) and lateral (24a) sides, the upper surface (l4b) having a rear portion (l6) for engaging the heel of a foot, a narrow central portion (l8) to be beneath the instep of the foot, a wide portion (20) to underlie and engage the metatarsal heads of the foot and a narrowing region (22) forwardly of the wide portion for underlying the inner space of the foot occurring just forwardly of the metatarsal heads and engaging the forward ends of the phalanges of the foot, characterised in that the sole (l4) has a curvilinear groove (24) in the bottom surface (l4a) at the said narrowing region (22) forwardly of the said wide portion (20), extending from the medial side (24b), forwardly and then rearwardly in the arc to the lateral side (24a), configurated and located to underlie the inner space of the foot forwardly of the metatarsal heads for allowing toe-off in a variety of forward directions.
2. A shoe sole according to Claim l in which the arc of the groove (24) has its forwardmost apex (24c) laterally off centre of the sole toward the medial side (24b).
3. A shoe sole according to Claim l or Claim 2 in which the groove (26) has in cross sectional configuration a concave curved upper portion blending into convex curved junctures with the said bottom surface (l4a).
4. A shoe (l0) comprising a sole (l4) and an upper (l2) connected thereto, the sole being according to Claim l or Claim 2 or Claim 3.
EP87300873A 1986-09-19 1987-01-30 Shoe soles Expired - Lifetime EP0260777B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87300873T ATE91855T1 (en) 1986-09-19 1987-01-30 SHOE SOLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90932086A 1986-09-19 1986-09-19
US909320 1986-09-19

Publications (3)

Publication Number Publication Date
EP0260777A2 true EP0260777A2 (en) 1988-03-23
EP0260777A3 EP0260777A3 (en) 1990-01-17
EP0260777B1 EP0260777B1 (en) 1993-07-28

Family

ID=25427026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87300873A Expired - Lifetime EP0260777B1 (en) 1986-09-19 1987-01-30 Shoe soles

Country Status (10)

Country Link
EP (1) EP0260777B1 (en)
JP (2) JPS6377403A (en)
AT (1) ATE91855T1 (en)
AU (1) AU586049B2 (en)
DE (1) DE3786729T2 (en)
ES (1) ES2041678T3 (en)
HK (1) HK1007264A1 (en)
MX (1) MX172656B (en)
NZ (1) NZ218968A (en)
ZA (1) ZA87384B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709928A1 (en) * 1993-09-14 1995-03-24 Le Her Herve Footwear with specific front flexing fold on the outsole and holding insole
FR2739533A1 (en) * 1995-10-06 1997-04-11 Scop Minibel Sa Sole for footwear with shock absorber under heel
US9642411B2 (en) 2004-11-22 2017-05-09 Frampton E. Ellis Surgically implantable device enclosed in two bladders configured to slide relative to each other and including a faraday cage
US9894958B2 (en) 2015-01-30 2018-02-20 Wolverine Outdoors, Inc. Flexible article of footwear and related method of manufacture

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68929338T2 (en) * 1988-07-15 2002-09-12 Anatomic Research, Inc. Shoe sole structures with a tapering thickness in a horizontal plane
US6675498B1 (en) 1988-07-15 2004-01-13 Anatomic Research, Inc. Shoe sole structures
US6708424B1 (en) 1988-07-15 2004-03-23 Anatomic Research, Inc. Shoe with naturally contoured sole
US6668470B2 (en) 1988-09-02 2003-12-30 Anatomic Research, Inc. Shoe sole with rounded inner and outer side surfaces
US6729046B2 (en) 1989-08-30 2004-05-04 Anatomic Research, Inc. Shoe sole structures
US6163982A (en) 1989-08-30 2000-12-26 Anatomic Research, Inc. Shoe sole structures
ATE198408T1 (en) 1989-10-03 2001-01-15 Anatomic Res Inc CORRECTIVE SHOE SOLE STRUCTURES WITH OUTLINES EXCEEDING THE THEORETICALLY IDEAL STABILITY SURFACE
US6789331B1 (en) 1989-10-03 2004-09-14 Anatomic Research, Inc. Shoes sole structures
JP3293071B2 (en) 1990-01-10 2002-06-17 アナトミック リサーチ、インク． Sole structure
FR2661321A1 (en) * 1990-04-30 1991-10-31 Ouin Andre Sports shoe with wear sole having improved transverse flexing
JPH07114721B2 (en) * 1991-02-28 1995-12-13 株式会社アシックス Sole and manufacturing method
US7546699B2 (en) 1992-08-10 2009-06-16 Anatomic Research, Inc. Shoe sole structures
US7634529B2 (en) 1996-11-29 2009-12-15 Ellis Iii Frampton E Personal and server computers having microchips with multiple processing units and internal firewalls
IT1315276B1 (en) * 1999-12-30 2003-02-03 Freddy Spa SHOE WITH SOLE PRESENTING A PART FOR THE FOREWORD DIVIDED AT LEAST TWO PARTS.
US8291618B2 (en) 2004-11-22 2012-10-23 Frampton E. Ellis Devices with internal flexibility sipes, including siped chambers for footwear
WO2006058013A2 (en) 2004-11-22 2006-06-01 Ellis, Frampton, E. Devices with internal flexibility sipes, including siped chambers for footwear
US8125796B2 (en) 2007-11-21 2012-02-28 Frampton E. Ellis Devices with faraday cages and internal flexibility sipes
US20150250260A1 (en) * 2012-10-29 2015-09-10 Asics Corporation Shoe Sole Focusing on Windlass Mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424032A (en) * 1910-12-19 1911-05-03 Pierre Eugene Gabriel Barthele Anatomo-physiological shoe
DE1930344U (en) * 1965-10-19 1965-12-30 Werner Froer SPORTSHOE OUTSOLE.
US4262435A (en) * 1979-04-11 1981-04-21 Block Barry H Athletic shoe
US4309832A (en) * 1980-03-27 1982-01-12 Hunt Helen M Articulated shoe sole

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825852U (en) * 1971-08-02 1973-03-28

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR424032A (en) * 1910-12-19 1911-05-03 Pierre Eugene Gabriel Barthele Anatomo-physiological shoe
DE1930344U (en) * 1965-10-19 1965-12-30 Werner Froer SPORTSHOE OUTSOLE.
US4262435A (en) * 1979-04-11 1981-04-21 Block Barry H Athletic shoe
US4309832A (en) * 1980-03-27 1982-01-12 Hunt Helen M Articulated shoe sole

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709928A1 (en) * 1993-09-14 1995-03-24 Le Her Herve Footwear with specific front flexing fold on the outsole and holding insole
FR2739533A1 (en) * 1995-10-06 1997-04-11 Scop Minibel Sa Sole for footwear with shock absorber under heel
US9642411B2 (en) 2004-11-22 2017-05-09 Frampton E. Ellis Surgically implantable device enclosed in two bladders configured to slide relative to each other and including a faraday cage
US9681696B2 (en) 2004-11-22 2017-06-20 Frampton E. Ellis Helmet and/or a helmet liner including an electronic control system controlling the flow resistance of a magnetorheological liquid in compartments
US10021938B2 (en) 2004-11-22 2018-07-17 Frampton E. Ellis Furniture with internal flexibility sipes, including chairs and beds
US11039658B2 (en) 2004-11-22 2021-06-22 Frampton E. Ellis Structural elements or support elements with internal flexibility sipes
US11503876B2 (en) 2004-11-22 2022-11-22 Frampton E. Ellis Footwear or orthotic sole with microprocessor control of a bladder with magnetorheological fluid
US9894958B2 (en) 2015-01-30 2018-02-20 Wolverine Outdoors, Inc. Flexible article of footwear and related method of manufacture

Also Published As

Publication number Publication date
EP0260777A3 (en) 1990-01-17
ES2041678T3 (en) 1993-12-01
HK1007264A1 (en) 1999-04-09
JPH0675204U (en) 1994-10-25
AU6551286A (en) 1988-03-24
NZ218968A (en) 1990-04-26
DE3786729D1 (en) 1993-09-02
EP0260777B1 (en) 1993-07-28
ZA87384B (en) 1987-09-30
DE3786729T2 (en) 1993-11-04
JPS6377403A (en) 1988-04-07
MX172656B (en) 1994-01-06
ATE91855T1 (en) 1993-08-15
AU586049B2 (en) 1989-06-29

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