SOLE STRUCTURE OF WORKING SHOE

STRUCTURE DE SEMELLE DE CHAUSSURE DE TRAVAIL

English Abstract

A sole structure of working shoe has an upper and a sole bonded by a
stitching.
A front portion according to the toes and extended from the: surface of the
sole has an
overall size which is smaller than the sole. A gadroon forms along the outer
periphery of the heel portion of the sole, and the gadroon has a quite depth
for
stitching so that the stitching stitches the sole under the upper along the
contour of the
sole. Furthermore, the gadroon is filled up with a welt, and the welt covers
the
stitching in the gadroon.

Claims

WHAT IS CLAIMED IS:
1. A sole structure of working shoe comprising an upper and a sole bonded by a
stitching, a gadroon forming along the outer periphery of the heel portion of
the
sole, and the gadroon having a quite depth for stitching so that the stitching
stitches the sole under the upper along the contour of the sole.
2. The sole structure of working shoe as claimed in Claim 1, wherein the
gadroon is
filled up with a welt, and the welt covers the stitching in the gadroon.
3. A sole structure of working shoe comprising an upper and a sole bonded by a
stitching, a front portion according to the toes and extended from the surface
of
the sole has an overall size which is smaller than the sole; a gadroon forming
along the outer periphery of the heel portion of the sole, and the gadroon
having
a quite depth for stitching so that the stitching stitches the sole under the
upper
along the contour of the sole.
4. The sole structure of working shoe as claimed in Claim 3, wherein the
gadroon is
filled up with a welt, and the welt covers the stitching in the gadroon.
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Description

CA 02449219 2003-11-14
SOLE STRUCTURE OF WORKING SHOE
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to a sole structure of working shoe, and
more particularly to a sole that is stitched to an upper by a stitching along
the contour
of the sole with uniform stitching thickness in order to increase the strength
of the
sole structure.
2. Description of Related Art
[0002] A conventional working shoe is designed for some dangerous
working environments, like a welding plant, a high temperature environment,
and a
slippery condition.
[0003] Referring to Figure 1, a conventional working shoe has an upper 11,
a middle sole 12, a lower sole 13, and a heel 14. The upper 11 is stitched to
the
middle sole 12 by a stitching 1S: The lower sole 13 gums to the middle sole
12, and
at last the heel 14 gums to the lower sole 13. However, in some special
environments, the working shoes have to provide waterproof, heatproof,
greaseproof,
and skidproof functions, but the binding method of conventional arts of
working
shoes has problems because the gum, bonding each layer of. the sole, would be
melted
under the hot condition. Besides, in the other method of one conventional art
that
the lower sole 13 is stitched to the middle sole 12 by a stitching 15, the
stitching 15 is
directly stitched along the contour of the lower sole 13 andl is not covered
so that the
stitching 15 would be worn more often during the working iin dangerous
environments
and it would lead to diminish the utility of the working shoes.
[0004] Taiwan Patent Application No. 892074 71, which is filed by the
present inventor, discloses a sole structure of working shoe. Referring to
Figure 2,
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the sole structure of working shoe has an upper 31 stitched to the periphery
of a sole
32 by a stitching 35. The sole 32 has a heel 33, according to the heel, and a
front
portion 34, according to the toes, which are extended from the surface of the
sole 32.
Each overall size of the heel 33 and the front portion 34 is smaller than the
overall
size of the sole 32, and therefore the stitching 35 would be stitched along
the edge of
the sole 32.
[0005] To overcome the shortcomings, the present invention tends to
provide a sole structure of working shoe to mitigate the aforementioned
problems.
[0006] In order to alleviate the aforementioned problems of the
conventional arts, a sole structure of working shoe is designed meticulously.
On the
basis of inventor's practice according to the work, the present invention is
useful, and
it can solve the problems and limits of the conventional arts.
[0007] To attain the above-stated object, in a sole; structure of working shoe
having an upper which is stitched to the periphery of the sole by a stitching,
and the
characteristic is that a gadroon forms along the outer periphery of a part of
the sole
where the heel portion extended. The result is that the gadroon has a quite
depth for
stitching so that the stitching stitches the sole under the upper along the
contour of the
sole with uniform stitching thickness.
[0008] About a preferred embodiment of the present invention, the sole
structure of working shoe having an upper which is stitched to the periphery
of the
sole by a stitching, and the characteristic is that a gadroon forms along the
outer
periphery of a part of the sole where the heel portion extended and a front
portion
according to the toes and extended from the surface of the sole has an overall
size
which is smaller than the sole. The result is that the gadroon has a quite
depth for
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CA 02449219 2003-11-14
stitching and the stitching would be stitched along the contour of the sole
with
uniform stitching thickness.
[0009] The present invention has improvements described as follows.
First, the whole sole is bonded with the upper by a stitching, and therefore
it would
never have problems about the gum. Moreover, the stitching would not contact
the
ground directly and be protected from wear. Finally, the present invention not
only
improves the strength of the bond and prevents the damage of the wear but also
makes
the users more comfortable.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more fully explain the features and advantages of the
present invention, the following preferred embodiments of a shoe according to
the
invention are described, as examples only without any limitative character,
with
reference to the accompanying drawings, in which:
[0016] Figure 1 is a perspective view of a conventional sole structure of
working shoe;
[0017] Figure 2 is a plan view of another conventional sole structure of
working shoe;
[0018] Figure 3 is a perspective view of a preferred embodiment of the sole
structure of working shoe of the present invention;
[O1i19] Figure 4 is a sectional view according to the heel of the shoe of
Figure 3;
[002(1] Figure 5 is a perspective view of another preferred embodiment of
the sole structure of working shoe of the present invention;
[0021] Figure 6 is a front view of the shoe of Figure 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
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[0022] Referring to Figure 3, a sole structure of working shoe in accordance
with the present invention has an upper 1 that is stitched to the periphery of
the sole 2
by a stitching 22f.
[0023] The sole 2 has a lower sole 22, constructed by a front portion 22a, a
shank 23, and a heel portion 22b. The front portion 22a, according to the
toes, and
the heel portion 22b, according to the heel, are extended from the surface of
the sole 2.
The shank 23 is hung in the air because the heel portion 22b is thicker than
the front
portion 22a. Referring to Figure 4, a gadroon 22c forms along the outer
periphery of
a part of the sole 2 where the heel portion 22b extended, a.nd the gadroon 22c
has a
quite depth for stitching so that the stitching 22f stitches the sole 2 under
the upper 1
along the contour of the sole 2 with uniform stitching thickness.
[0024] Referring to Figures 5 and 6, the sole structure of working shoe in
accordance with the present invention wherein the gadroon ZZe is filled up
with a welt
22g. The welt 22g is a decoration and makes the shoes fancy. Furthermore, the
welt 22g can prevent the gadroon 22c dirty and protect tine stitching 22f from
wear.
Finally, the welt 22g can reflect light in the dark to improve the safety of
the users.
[0025] Referring to Figure 7, the sole structure of working shoe in
accordance with the present invention wherein the front portion 22a forms an
annular
portion 22d surrounding an inner portion 22e. The annular portion 22d is the
surrounding part of the front portion 22a, and the inner portion 22e is the
other part,
the inner part, of the front portion 22a. The inner portion 22e is thicker
than the
annular portion 22d so that the stitching 22f stitches the sole 2 under the
upper 1 along
the contour of the sole 2 with uniform stitching thickness.
[0026] About the said sole structure of working shoe of the present
invention, the upper 1 is stitched to the sole 2 along the contour of the sole
2 by the
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stitching 22f with uniform stitching thickness so that the combinative
strength of the
upper 1 and the sole 2 is stronger and do not be degummed.
[0(127] It is to be understood, however, that even though numerous
characteristics and advantages of the present invention have been set forth in
the
foregoing description, together with details of the structwe and function of
the
invention, the discloswe is illustrative only, and changes may be made in
detail,
especially in matters of shape, size, and arrangement of parts within the
principles of
the invention to the full extent indicated by the broad general meaning of the
terms in
which the appended claims are expressed.

Representative Drawing