CA1095234A - Sport shoe - Google Patents
Sport shoeInfo
- Publication number
- CA1095234A CA1095234A CA316,665A CA316665A CA1095234A CA 1095234 A CA1095234 A CA 1095234A CA 316665 A CA316665 A CA 316665A CA 1095234 A CA1095234 A CA 1095234A
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- Canada
- Prior art keywords
- connecting portion
- shoe
- bandage
- elongated
- elongated portion
- 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.)
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A shoe having a sole, an upper formed from a relatively soft and extensible material, a lacing strip and a bandage connecting the lacing strip with the sole.
The bandage is formed from a material which is less ex-tensible than the material of the upper, The bandage includes an elongated portion and a connecting portion which extends laterally of the elongated portion at the juncture of the bandage with the lacing strip. The la-terally-extensive connecting portion transmits forces from the lacing strip to the elongated portion, and substantially prevents transmission of such forces through the extensible material of the upper. Thus, the upper is less apt to become fatigued or distorted during wear.
This abstract should not be taken as a complete exposi-tion of the present invention.
A shoe having a sole, an upper formed from a relatively soft and extensible material, a lacing strip and a bandage connecting the lacing strip with the sole.
The bandage is formed from a material which is less ex-tensible than the material of the upper, The bandage includes an elongated portion and a connecting portion which extends laterally of the elongated portion at the juncture of the bandage with the lacing strip. The la-terally-extensive connecting portion transmits forces from the lacing strip to the elongated portion, and substantially prevents transmission of such forces through the extensible material of the upper. Thus, the upper is less apt to become fatigued or distorted during wear.
This abstract should not be taken as a complete exposi-tion of the present invention.
Description
23~
SPORT SHOE
BACKGROUND OF THE INVENTION
' ;
This inven~ion relates to footwear, and relates in particular to spor-t shoes.
.
S Sport shoes~ such as jogging shoes, tennis shoes and the like, normally include uppers which are formed ~` from relatively soft and extensible materials such as thin fabric or thin, soft leather. An upper formed from such a soft ma-terial conforms closely to the contour of the foo-t without sub~ecting any particular area o the foot to ex- -cessive pressure. However, the soft material of such an upper is limited in its capacity to accurately and depend ably transmit forces from -the foot to the sole of the shoeO
Also~ such a soft upper is subject to distor-tion due to the 1~ forces applied to it by the laces of the shoe~
; It has long been known in -the art to provide so- `~
called l'lacing strips'l and "bandages". The 'llacing strips"
are strips of relatively inextensihle matexial arranged on either side of the tongue slot of the shoe and provided with holes to receive the laces~ These lacing strip~ run gener-ally forwardly and downwardly over the area of the shoe which overlies the instep of the foot.
The i'bandages" are relatively thin, strap-like elongated elements formed fxom a rela-tively inextensible `~
material such as a relatively thick, tough leather. Each such bandage extends generally rearwardly and downwardly from a lacing strip along a side of the upper to a rearward portion of the sole of the shoe. The bandages transmit the forces from the lacing strips to the sole of ths shoe. Thus, ~orces exerted by the laces can be transmitted to th ~ le --I _ without relying on the relatively extensible mate.rial of ~he upper. Furthermore, forces applied by the foot to the area of the upper overlying the instep can also be transmitted along khe bandages to the sole of the shoe, again without relying on the relatively extensible material of the upper.
However, this arrangement of lacing strips and bandages does not provide a complete solution to the prob-lem of transmitt.ing forces to the sole of a shoe having an :~.
]o upper formed from a relatively extensible material. Thebandages described above are relatively narrow, and are joined to each lacing strip over only a small portion of the length of that lacing strip. Thus, certain areas of the lacing strips (for example the extreme forward ends of the lacing strips) will be remote from the junctures of the ~;
laciny strips with the bandages. Th0 relatively extensible material of the upper may still be subjected to forces transmitted from these portions of the lacing strips. Thus, the material ~rom the upper adjacent to the forwardmost ends of the lacing strips is often found to fatigue or stretch during the life of the shoe. When this occurs, the upper will no longer closely conform to the contour of the foot.
Furthex, the :Eorces transmitted through the band-ages are all concentrated at the relatively narrow junctures between the bandages and the lacing strips. Therefore, the areas of the instep which these junctures overly will be subjected to concen-trated loadings with resultant discomfort to the wearer.
Accordingly, it is th principal object of the present invention to provide a shoe wh.ich incorporates a .. . . ~
9,5;~3~
. 3--relatively extensible upper and which can therefore closely and comfortably conform to the foot, but which is capable o accurately and dependably transmitting forces exerted by the laces and by the foot to the sole of the shoe with-out the disadvantages of the aforementioned bandage andlacing st.rip arrangement.
: The shoe of the present invention includes an upper formed ~rom a first material and a lacing strip af-fixed to the upper so that it extends generally forwardly and downwardly and generally rearwardly and upwardly on an area of the upper which is adapted to overlie the instep of a foot xeceived in the shoe. 1Ihe shoe i5 provided with : a handage which includes an elongated portion and a con-necting portion, remote from the elongated portion, extends ~:
laterally o the elongated portion and is af~ixed to the lacing strip. The elongated portion of the bandage extends generally downwardly and rearwardly from the connecting por-tion of the bandage to a second end~ which is affixed to a rearward portion o~ the sole. The bandage is formed from a second material which is substan-tially less extensible than said fîrst material. :
The connecting portion o~ the bandage is prefer ably affixed to the lacing ~trip over a substantial portion ~:
of the length of the lacing strip. Therefore, the connect-ing portion can transmit forces applied to this portion o~
the lacing strip to the elongated portion, which can trans-mit them to the sole. Thus, forces applied to the lacing s-trip in the shoe of ~he present invention are not concen-trated at any narrow juncture between lacing strip and bandage, and are less apt to be transmitted th.rough the 523~
relatively extensible material of ~he upper.
These and other objects, features, and advantages of the present invention will be more readily apparent in view of the following detailed description of the preferred embodiment, when read in conjunction with the acco~panying drawing.
~.
BRIEF DESCRIPTION OF_ THE _D:RAWINGS
Fig. 1 is a side elevational view of a shoe ac-cording to a preferred embodiment oE the present invention.
; 10Fig. 2 is a schematic side elevational view show ing ~he force transmissive elements of a shoe according to ; an alternate embodiment of the present invention~
'..
DF,TAILEl:) DE5CRIPTION OF THE j PREFERRED EMBODIMENTS -~
15As shown in Fig~ 1, a shoe 10 in accordance with ~`
a preferred embodiment of the present inven~ion includes a sole 12 and an upper 14~ The upper 14 is formed from a sub-stantially extensible and conformable ma-terial such as soft leather or an unreinforced textile material. The upper is formed generally in the shape of a foot 16, so that the upper may receive the foot. In the conventional manner, the upper is provided with a tongue slot in the area adapted to overlie the instep of the foot, and a tongue 18 bridges this tongue slot~ A lacing strip 20 extends gener-ally forwardly and downwardly and generally rearwardly~andupwardly along one side of the tongue slot, in an area of the upper which is adapted to overlie the instep of the foot 16~ This lacing strip 20 is provided with holes 22 to re-ceive the laces (not shown) The lacing strip 20 is affixed to the remainder of the upper by stitches 24.
~4--~523g~
A bandage 26 connects the lacing strip 20 with a rear-~ ward portion 12a of the sole 12. The bandage 26 includes an - elongated portion 28 and a connecting portion 30.
A first edge 30a of the connecting portion 30 i5 remote from the elongated portion 28. This first edge 30a of the connecting portion 30 i~ affixed to the lacing strip 20.
The length of this irst edge 30a~ along which the connecting portion is affixed to the lacing strip, encom-passes a substantial portion of the length of the lacing strip. Preferably, this length of the first edge 30a is greater than the width of the elongated portion 28 of -the bandage~ The elongated portion 28 and the connecting por-tion 30 are formed integrally, so that a first end 28a of the elongated portion 28 of the bandage is affixed to the connecting portion 30 of the bandage at the juncture between the elongated portlon and the connecting portion9 The ~ ;
elongated portion 28 extends generally downwardly and rearwardly from its first end 28a to its second end 28b.
This second end 28b is affixed to the rearward portion 12a oE the sole.
The connecting portion 30 extends generally later ally of the elongated portion 28. In the embodiment shown, the connecting portion 30 extends generally forwardly of the elongated portion 23 so that the forwardmost tip 30b of the connectin~ portion 30 lies adjacent to -the forward-most end of lacing strip 20. A second edge 30c of the con -~
necting portion 30 extends from the forwardmost tip 30b of the connecting portion to the juncture of the connecting portion with the elongated portion. This second edge 30c slopes away ~rom th~ lacing strip 20 in the rearward direc-;23~
tion (towards the juncture of the connecting portion withth~ elongated portionl. Thus, the dimension of the con-necting portion 30 in the direction of elongation of the elongated portion ~the downward and rearward direction) is greater at the juncture of the connecting portion with he elongated portion than at the forwardmost tip 30b~
An auxiliary strap 32 also extends from the lac~
ign strap 20 to the sole of the shoe. The auxiliary strap 32 is narrow and elongated~ and its direction of elongation is generally parallel with the direction of elongation of khe elongated portion 28 of bandage 26~ The auxiliary strap 32 is positioned generally rearwardly of the bandage ~6, so that the bandage 26 and the auxiliary strap 32 to-gether define an area 34 on the surface of the upper 14 The lacing strip 20, the bandage 26, and the auxili-, ~
ary strap 32 are formed from a second material which has a greater resistance to elongation than the material from which the upper is formed. The relationship between the resistance to elongation of the bandage material and the resistance to elongation of the upper material is essential to the Eunc tion of the bandage and of the auxiliary strap. However, any material can he used for the bandage so long as it is less extensible than the material of the upper~ For example, the bandage may be fabricated from a metal, from a synthetic textile such as polyamide or aramide, or from woven glass.
Most preferably, the bandage is fabricated from a relative-ly tough and hard rubber with embedded nylon fibers running ~enerally in the direction of elongation of the elongated portion~
3~ As can be appreciated, various forces are applied . .
.
3~
to the lacing strip. The laces themselves tend to pull the lacing strip towards the central axis of the shoe and thus tend -to pull it up over the instep of the foot and away from the sole. Also, the foot within the shoe will bear on the lacing strip by wa~ of the tongue and tend to force the lacing skrip upwardly and away from the sole. These forces are distributed over th~ length of the lacing strip.
The elongated portion 28 of the bandage is rela-tively narrow. If the connecting portion 30 of the bandage were omitted, and the elongated portion 28 were simply ex-tended so that its first end 28a were attached to -the lac-ing strip 2Q, the lacing strip 20 would only be affixed to the bandage and to the auxiliary strap over a relatively small portion of the length of the lacing strip. Thus, the forces applied to the Forward portion 20b of the lacing strip would not be transmitted to the bandaga. These forceii would be transmitted to the sole via the xelatively e~tensible ma-terial of the uppex.
However, because the connecting portion 30 extends ~0 laterally of the elongated portion 28, the connecting por-tion 30 can absorb the forces exerted on the forward por- "
tion 20b of the lacing strip and transmit these forces to the elongated portion 28 of the bandage. Therefore, the forces applied to the forward portion 20b of the lacing strip wil] be borne by the bandage and not by the material of the upper.
The forces applied to the rearwardmost portion ~ -of the lacing strip 20 will be transmitted to the sole via the auxiliary strap 32. However/ the greater portion of the forces will be transmitted by way of the bandage 26.
Therefore, the elongated portion 28 of the bandage 26 is made wider than the auxiliary strap 32.
The forward part of the connecting portion 30 which extends laterally of the elongated portion 28 may be considered akin to a cantilever beam. The forward portion 20b of the lacing strip applies a distributed load to this cantilever beam. The forces making up this distributed load are generally in the direction of elongation of elon-gation portion 28. To minimize the area occupied by the connecting portion, the dimension of the connecting portion in this direction of elongation varies. Thus, at the Eorward-most tip 30b, this dimension is small because only a small load need be transmitked, while at the juncture of the elongated portion with the connecting portion 28, this dimension is large because a larger load must be transmitted.
~n alternate embodiment of a shoe of the present invention is illustrated in Fig. 2. However, the upper and the tongue have been omitted from Fig. 2 ~or clarity of illustration. The ;
lacing strip 201-and the bandage 26' of this embodiment are formed integrally with one another~ This integral component also includes two auxiliary straps 32' which are joined to the bandage at the connecting portion 30' and at the juncture of the elongated portion 28' with the sole. The second edge 30c' of the connecting portion of this embodiment is curved rather than straight. This second edge 30c' extends from the forward-most tip 30b' of the connecting portion 30' to the juncture between the connecting portion 30! and the elongated portion 28'. The second edge 30CI curves away from the lacing strip 201 in -the area adjacent to the juncture of the connecting portion and the elongated portion. This second edge 30c' ... , ,, , ., . ~
%~
_9_ is tangential to the forward lateral edge 36 of the elon-gated portion 28' at the juncture of these two edges. The smooth blending of the second edge 30c' and the forward lateral edge 36 of the connecting portion 28' prevents the occuxrence of any stress concentration at the juncture of these two edges.
The distribution of forces over the length of the lacing strip is illustrated by the arrows 38 at the top of E`ig. 2. For clarity of illustration~ these arrows have been rotated away from the actual direction of the forces. In fact, these forces shown by the arrows 38 are directed gener-ally forwardly and upwardly~
As shown by the arrows 38, the forwardmost portion of the lacing strip 20b and the adjacent tip 30~ of the connecting portion 30 are under only relatively small loads.
The loads applied to the lacing strip and to the connecting .
portion a.re greater in the area adjacent to the juncture of the connecting portion 30' with the elongated portion 28'.
The curved form of the second edge 30c' of the connecting portion 30' assures thatr at any point alony the lacing strip, the dimension of the connecting porti.on in the direction of the forces will be substantially proportionecl to the load ~ -which the connecting portion must bear at that point. :
The ar.rows 40 illustrate the distribution of forces at the juncture of the elongated portion 28' and the :
auxiliary strap 32' with the sole of the shoe.
The elongated portions of the bandages in both of the embodiments descxibed above are relatively narrow, and hence do not in-terfere with the extensibility of the upper over any sub~tantial proportion of its area. However~
--1 0~
because of the laterally extensive connecting portion, the forces applied to the lacing strips may be trans~itted by way of these bandages and not by way of the relatively ex tensible material of the upper. Furthermore, this force transmission is accomplished without concentrating the loads at any point along the lengths of the lacing strips. Thus, the shoes of the embodiments described above are capable of wear without distortion of the upper due to forces transmitted through the extensible material thereof and without discomfort due to concentrated loadings on the lacing strips.
~umerous variations and combinations of the ~ea-tures described above may be made without departing from the spirit of the present invention. Merely by way of example, the auxiliary straps described above may be omit- -ted if the connecting portion of the bandage extends to the rearward portion of the lacing strip. Thereforel the fore-going descrip-tion of the preferred embodiments should be considered as merely illustrative of the present invention.
. .. .,: :, ..
..
SPORT SHOE
BACKGROUND OF THE INVENTION
' ;
This inven~ion relates to footwear, and relates in particular to spor-t shoes.
.
S Sport shoes~ such as jogging shoes, tennis shoes and the like, normally include uppers which are formed ~` from relatively soft and extensible materials such as thin fabric or thin, soft leather. An upper formed from such a soft ma-terial conforms closely to the contour of the foo-t without sub~ecting any particular area o the foot to ex- -cessive pressure. However, the soft material of such an upper is limited in its capacity to accurately and depend ably transmit forces from -the foot to the sole of the shoeO
Also~ such a soft upper is subject to distor-tion due to the 1~ forces applied to it by the laces of the shoe~
; It has long been known in -the art to provide so- `~
called l'lacing strips'l and "bandages". The 'llacing strips"
are strips of relatively inextensihle matexial arranged on either side of the tongue slot of the shoe and provided with holes to receive the laces~ These lacing strip~ run gener-ally forwardly and downwardly over the area of the shoe which overlies the instep of the foot.
The i'bandages" are relatively thin, strap-like elongated elements formed fxom a rela-tively inextensible `~
material such as a relatively thick, tough leather. Each such bandage extends generally rearwardly and downwardly from a lacing strip along a side of the upper to a rearward portion of the sole of the shoe. The bandages transmit the forces from the lacing strips to the sole of ths shoe. Thus, ~orces exerted by the laces can be transmitted to th ~ le --I _ without relying on the relatively extensible mate.rial of ~he upper. Furthermore, forces applied by the foot to the area of the upper overlying the instep can also be transmitted along khe bandages to the sole of the shoe, again without relying on the relatively extensible material of the upper.
However, this arrangement of lacing strips and bandages does not provide a complete solution to the prob-lem of transmitt.ing forces to the sole of a shoe having an :~.
]o upper formed from a relatively extensible material. Thebandages described above are relatively narrow, and are joined to each lacing strip over only a small portion of the length of that lacing strip. Thus, certain areas of the lacing strips (for example the extreme forward ends of the lacing strips) will be remote from the junctures of the ~;
laciny strips with the bandages. Th0 relatively extensible material of the upper may still be subjected to forces transmitted from these portions of the lacing strips. Thus, the material ~rom the upper adjacent to the forwardmost ends of the lacing strips is often found to fatigue or stretch during the life of the shoe. When this occurs, the upper will no longer closely conform to the contour of the foot.
Furthex, the :Eorces transmitted through the band-ages are all concentrated at the relatively narrow junctures between the bandages and the lacing strips. Therefore, the areas of the instep which these junctures overly will be subjected to concen-trated loadings with resultant discomfort to the wearer.
Accordingly, it is th principal object of the present invention to provide a shoe wh.ich incorporates a .. . . ~
9,5;~3~
. 3--relatively extensible upper and which can therefore closely and comfortably conform to the foot, but which is capable o accurately and dependably transmitting forces exerted by the laces and by the foot to the sole of the shoe with-out the disadvantages of the aforementioned bandage andlacing st.rip arrangement.
: The shoe of the present invention includes an upper formed ~rom a first material and a lacing strip af-fixed to the upper so that it extends generally forwardly and downwardly and generally rearwardly and upwardly on an area of the upper which is adapted to overlie the instep of a foot xeceived in the shoe. 1Ihe shoe i5 provided with : a handage which includes an elongated portion and a con-necting portion, remote from the elongated portion, extends ~:
laterally o the elongated portion and is af~ixed to the lacing strip. The elongated portion of the bandage extends generally downwardly and rearwardly from the connecting por-tion of the bandage to a second end~ which is affixed to a rearward portion o~ the sole. The bandage is formed from a second material which is substan-tially less extensible than said fîrst material. :
The connecting portion o~ the bandage is prefer ably affixed to the lacing ~trip over a substantial portion ~:
of the length of the lacing strip. Therefore, the connect-ing portion can transmit forces applied to this portion o~
the lacing strip to the elongated portion, which can trans-mit them to the sole. Thus, forces applied to the lacing s-trip in the shoe of ~he present invention are not concen-trated at any narrow juncture between lacing strip and bandage, and are less apt to be transmitted th.rough the 523~
relatively extensible material of ~he upper.
These and other objects, features, and advantages of the present invention will be more readily apparent in view of the following detailed description of the preferred embodiment, when read in conjunction with the acco~panying drawing.
~.
BRIEF DESCRIPTION OF_ THE _D:RAWINGS
Fig. 1 is a side elevational view of a shoe ac-cording to a preferred embodiment oE the present invention.
; 10Fig. 2 is a schematic side elevational view show ing ~he force transmissive elements of a shoe according to ; an alternate embodiment of the present invention~
'..
DF,TAILEl:) DE5CRIPTION OF THE j PREFERRED EMBODIMENTS -~
15As shown in Fig~ 1, a shoe 10 in accordance with ~`
a preferred embodiment of the present inven~ion includes a sole 12 and an upper 14~ The upper 14 is formed from a sub-stantially extensible and conformable ma-terial such as soft leather or an unreinforced textile material. The upper is formed generally in the shape of a foot 16, so that the upper may receive the foot. In the conventional manner, the upper is provided with a tongue slot in the area adapted to overlie the instep of the foot, and a tongue 18 bridges this tongue slot~ A lacing strip 20 extends gener-ally forwardly and downwardly and generally rearwardly~andupwardly along one side of the tongue slot, in an area of the upper which is adapted to overlie the instep of the foot 16~ This lacing strip 20 is provided with holes 22 to re-ceive the laces (not shown) The lacing strip 20 is affixed to the remainder of the upper by stitches 24.
~4--~523g~
A bandage 26 connects the lacing strip 20 with a rear-~ ward portion 12a of the sole 12. The bandage 26 includes an - elongated portion 28 and a connecting portion 30.
A first edge 30a of the connecting portion 30 i5 remote from the elongated portion 28. This first edge 30a of the connecting portion 30 i~ affixed to the lacing strip 20.
The length of this irst edge 30a~ along which the connecting portion is affixed to the lacing strip, encom-passes a substantial portion of the length of the lacing strip. Preferably, this length of the first edge 30a is greater than the width of the elongated portion 28 of -the bandage~ The elongated portion 28 and the connecting por-tion 30 are formed integrally, so that a first end 28a of the elongated portion 28 of the bandage is affixed to the connecting portion 30 of the bandage at the juncture between the elongated portlon and the connecting portion9 The ~ ;
elongated portion 28 extends generally downwardly and rearwardly from its first end 28a to its second end 28b.
This second end 28b is affixed to the rearward portion 12a oE the sole.
The connecting portion 30 extends generally later ally of the elongated portion 28. In the embodiment shown, the connecting portion 30 extends generally forwardly of the elongated portion 23 so that the forwardmost tip 30b of the connectin~ portion 30 lies adjacent to -the forward-most end of lacing strip 20. A second edge 30c of the con -~
necting portion 30 extends from the forwardmost tip 30b of the connecting portion to the juncture of the connecting portion with the elongated portion. This second edge 30c slopes away ~rom th~ lacing strip 20 in the rearward direc-;23~
tion (towards the juncture of the connecting portion withth~ elongated portionl. Thus, the dimension of the con-necting portion 30 in the direction of elongation of the elongated portion ~the downward and rearward direction) is greater at the juncture of the connecting portion with he elongated portion than at the forwardmost tip 30b~
An auxiliary strap 32 also extends from the lac~
ign strap 20 to the sole of the shoe. The auxiliary strap 32 is narrow and elongated~ and its direction of elongation is generally parallel with the direction of elongation of khe elongated portion 28 of bandage 26~ The auxiliary strap 32 is positioned generally rearwardly of the bandage ~6, so that the bandage 26 and the auxiliary strap 32 to-gether define an area 34 on the surface of the upper 14 The lacing strip 20, the bandage 26, and the auxili-, ~
ary strap 32 are formed from a second material which has a greater resistance to elongation than the material from which the upper is formed. The relationship between the resistance to elongation of the bandage material and the resistance to elongation of the upper material is essential to the Eunc tion of the bandage and of the auxiliary strap. However, any material can he used for the bandage so long as it is less extensible than the material of the upper~ For example, the bandage may be fabricated from a metal, from a synthetic textile such as polyamide or aramide, or from woven glass.
Most preferably, the bandage is fabricated from a relative-ly tough and hard rubber with embedded nylon fibers running ~enerally in the direction of elongation of the elongated portion~
3~ As can be appreciated, various forces are applied . .
.
3~
to the lacing strip. The laces themselves tend to pull the lacing strip towards the central axis of the shoe and thus tend -to pull it up over the instep of the foot and away from the sole. Also, the foot within the shoe will bear on the lacing strip by wa~ of the tongue and tend to force the lacing skrip upwardly and away from the sole. These forces are distributed over th~ length of the lacing strip.
The elongated portion 28 of the bandage is rela-tively narrow. If the connecting portion 30 of the bandage were omitted, and the elongated portion 28 were simply ex-tended so that its first end 28a were attached to -the lac-ing strip 2Q, the lacing strip 20 would only be affixed to the bandage and to the auxiliary strap over a relatively small portion of the length of the lacing strip. Thus, the forces applied to the Forward portion 20b of the lacing strip would not be transmitted to the bandaga. These forceii would be transmitted to the sole via the xelatively e~tensible ma-terial of the uppex.
However, because the connecting portion 30 extends ~0 laterally of the elongated portion 28, the connecting por-tion 30 can absorb the forces exerted on the forward por- "
tion 20b of the lacing strip and transmit these forces to the elongated portion 28 of the bandage. Therefore, the forces applied to the forward portion 20b of the lacing strip wil] be borne by the bandage and not by the material of the upper.
The forces applied to the rearwardmost portion ~ -of the lacing strip 20 will be transmitted to the sole via the auxiliary strap 32. However/ the greater portion of the forces will be transmitted by way of the bandage 26.
Therefore, the elongated portion 28 of the bandage 26 is made wider than the auxiliary strap 32.
The forward part of the connecting portion 30 which extends laterally of the elongated portion 28 may be considered akin to a cantilever beam. The forward portion 20b of the lacing strip applies a distributed load to this cantilever beam. The forces making up this distributed load are generally in the direction of elongation of elon-gation portion 28. To minimize the area occupied by the connecting portion, the dimension of the connecting portion in this direction of elongation varies. Thus, at the Eorward-most tip 30b, this dimension is small because only a small load need be transmitked, while at the juncture of the elongated portion with the connecting portion 28, this dimension is large because a larger load must be transmitted.
~n alternate embodiment of a shoe of the present invention is illustrated in Fig. 2. However, the upper and the tongue have been omitted from Fig. 2 ~or clarity of illustration. The ;
lacing strip 201-and the bandage 26' of this embodiment are formed integrally with one another~ This integral component also includes two auxiliary straps 32' which are joined to the bandage at the connecting portion 30' and at the juncture of the elongated portion 28' with the sole. The second edge 30c' of the connecting portion of this embodiment is curved rather than straight. This second edge 30c' extends from the forward-most tip 30b' of the connecting portion 30' to the juncture between the connecting portion 30! and the elongated portion 28'. The second edge 30CI curves away from the lacing strip 201 in -the area adjacent to the juncture of the connecting portion and the elongated portion. This second edge 30c' ... , ,, , ., . ~
%~
_9_ is tangential to the forward lateral edge 36 of the elon-gated portion 28' at the juncture of these two edges. The smooth blending of the second edge 30c' and the forward lateral edge 36 of the connecting portion 28' prevents the occuxrence of any stress concentration at the juncture of these two edges.
The distribution of forces over the length of the lacing strip is illustrated by the arrows 38 at the top of E`ig. 2. For clarity of illustration~ these arrows have been rotated away from the actual direction of the forces. In fact, these forces shown by the arrows 38 are directed gener-ally forwardly and upwardly~
As shown by the arrows 38, the forwardmost portion of the lacing strip 20b and the adjacent tip 30~ of the connecting portion 30 are under only relatively small loads.
The loads applied to the lacing strip and to the connecting .
portion a.re greater in the area adjacent to the juncture of the connecting portion 30' with the elongated portion 28'.
The curved form of the second edge 30c' of the connecting portion 30' assures thatr at any point alony the lacing strip, the dimension of the connecting porti.on in the direction of the forces will be substantially proportionecl to the load ~ -which the connecting portion must bear at that point. :
The ar.rows 40 illustrate the distribution of forces at the juncture of the elongated portion 28' and the :
auxiliary strap 32' with the sole of the shoe.
The elongated portions of the bandages in both of the embodiments descxibed above are relatively narrow, and hence do not in-terfere with the extensibility of the upper over any sub~tantial proportion of its area. However~
--1 0~
because of the laterally extensive connecting portion, the forces applied to the lacing strips may be trans~itted by way of these bandages and not by way of the relatively ex tensible material of the upper. Furthermore, this force transmission is accomplished without concentrating the loads at any point along the lengths of the lacing strips. Thus, the shoes of the embodiments described above are capable of wear without distortion of the upper due to forces transmitted through the extensible material thereof and without discomfort due to concentrated loadings on the lacing strips.
~umerous variations and combinations of the ~ea-tures described above may be made without departing from the spirit of the present invention. Merely by way of example, the auxiliary straps described above may be omit- -ted if the connecting portion of the bandage extends to the rearward portion of the lacing strip. Thereforel the fore-going descrip-tion of the preferred embodiments should be considered as merely illustrative of the present invention.
. .. .,: :, ..
..
Claims (9)
1. A shoe comprising an upper formed from a first material, a sole, a lacing strip affixed to said upper and extending generally forwardly and downwardly and generally rearwardly and upwardly on an area of said upper adapted to overlie the instep of a foot received in the shoe, and a bandage formed from a second material which is substantially less extensible than said first material, said bandage in-cluding an elongated portion and a connecting portion extend-ing laterially of said elongated portion at a first end thereof, a first edge of said connecting portion remote from said elongated portion extending laterally of said elongated portion and being affixed to said lacing strip, said elon-gated portion extending generally downwardly and rearwardly from said connecting portion to a second end opposite from said first end, said second end being a fixed to a rearward portion of said sole.
2. A shoe as claimed in claim 1, wherein said connecting portion extends generally forwardly of said elongated portion.
3. A shoe as claimed in claim 2, wherein the di-mention of said connecting portion in the direction of elongation of said elongated portion is greater at the juncture of said connecting portion with said elongated portion than the dimension of said connecting portion in such direction at the forwardmost tip of said connecting portion.
4. A shoe as claimed in claim 3, wherein a second edge of said connecting portion extends from the forwardmost tip of said connecting portion to the juncture of said con-necting portion with said elongated portion, and said second edge of said connecting portion is substantially straight and slopes away from said lacing strip to the juncture of said connecting portion with said elongated portion.
5. A shoe as claimed in claim 3, wherein a second edge of said connecting portion extends from the forwardmost tip of said connecting portion to the juncture of said con-necting portion with said elongated portion, and said second edge of said connecting portion curves away from said lacing strip in the area adjacent to the juncture of said connecting portion with said elongated portion so that said second edge of said connecting portion is tangential to the forward la-teral edge of said elongated portion.
6. A shoe as claimed in claim 2, further compris-ing an elongated auxiliary strap of relatively inextensible material extending from said lacing strip to said sole gener-ally parallel to said elongated portion of said bandage, said auxiliary strap being positioned generally rearwardly of said bandage.
7. A shoe as claimed in claim 6, wherein said auxiliary strap is joined to said bandage at said connecting portion of said bandage and at the juncture of said elongated portion with said sole, and said auxiliary strap is formed integrally with said bandage.
8. A shoe as claimed in claim 6, wherein said elongated portion is wider than said auxiliary strap.
9. A shoe as claimed in claim 1, wherein the length of said first edge of said connecting portion is greater than the width of said elongated portion.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2752301.9 | 1977-11-23 | ||
| DEG7735846.4 | 1977-11-23 | ||
| DE2752301A DE2752301C2 (en) | 1977-11-23 | 1977-11-23 | Sports shoe |
| DE7735846 | 1977-11-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1095234A true CA1095234A (en) | 1981-02-10 |
Family
ID=25773139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA316,665A Expired CA1095234A (en) | 1977-11-23 | 1978-11-22 | Sport shoe |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1095234A (en) |
-
1978
- 1978-11-22 CA CA316,665A patent/CA1095234A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |