Title of Invention

SHOE WITH BREATHABLE AND WATERPROOF SOLE AND UPPER

Abstract A shoe (200) with breathable and waterproof sole and upper comprising a breathable and waterproof sole (211) and an assembly (212), which is associated with said sole (211) in an upward region and is constituted by an external breathable upper (213), an internal lining (214) and between them a breathable and waterproof membrane (215), an at least partially perforated or breathable insole (216), which is joined at least to said breathable and waterproof membrane (215). The shoe (200) comprises a waterproof inshoe (227) which is at least partially perforated or breathable at the region of said sole (211) that is assigned to vapor permeation, said inshoe (227) being associated in a downward region with said insole (216), its peripheral edge (230) completely overlapping the connecting region (217) between said insole (216) and said breathable and waterproof membrane (215) so as to provide a peripheral seal, said upper (213) adhering to said inshoe (227), said breathable and waterproof sole being associated hermetically and peripherally with said assembly (212) only at said upper (213) and at the exposed portion, if any of said inshoe (212), without affecting the remaining central part that corresponds to the region assigned to vapor permeation.
Full Text SHOE WITH BREATHABLE AND WATERPROOF SOLE AND UPPER
Technical Field
The present invention relates to a shoe with breathable and
waterproof sole and upper.
Background Art
It is now well known that the comfort of a shoe depends not only on
its correct anatomical fit but also on correct outward permeation of the
water vapor that has formed inside the shoe due to perspiration.
However, this permeation of the water vapor must not compromise
the waterproofness of the shoe.
Traditionally, breathable shoes are shoes that use natural materials
such as leather or equivalent products, which however, in the presence of
rain or bad weather, indeed because of their permeation properties, do not
ensure good waterproofness and indeed absorb water rather easily.
For this reason, shoes with an upper made of leather (or the like)
coupled with a lining provided with a breathable and waterproof membrane
(for example made of a material such as Gore-Tex® or the like), sewn or
glued to an insole, have now been in use for a few years.
In the manufacture of these shoes, it is critical to pay attention to the
seal of the regions where the insole and the lining connect to the membrane
and the sole, in order to avoid even the slightest seepage of water from
outside.
Most of the perspiration of the foot is generated at the interface
between the sole of the foot and the sole of the shoe, which is typically '
made of polymeric material; it is evident that the perspiration that has
formed on this interface is unable to evaporate, consequently condensing on
the plantar insert on which the foot rests. Only a small percentage of the
perspiration evaporates through the upper.
Accordingly, shoes that have breathable and waterproof soles have
now been studied for years.

One of these soles is disclosed in US-5,044,096 and in EP-0382904,
and consists in dividing the sole, made of plastic material, into two layers
with through holes and in interposing a membrane that is impermeable to
water and breathable (made for example of a material such as Gore-Tex® or
the like) and is joined perimetrically and hermetically to the two layers, so
as to hinder any water infiltrations.
This sole ensures correct vapor permeation as well as an effective
exchange of heat and water vapor between the environment inside the shoe
and the external environment, at the same time ensuring the necessary
waterproofness with respect to external humidity and water.
To provide a completely waterproof shoe, it is possible to couple a
waterproof breathable sole to a waterproof breathable upper such as those
described.
The step of waterproofing the regions connecting the insole and the
lining to the membrane is also critical in the manufacture of shoes of this
type.
Summary of the Invention
The aim of the present invention is to provide a shoe with a sole and
an upper that are breathable and ensure complete waterproofhess.
Within this aim, an object of the present invention is to provide a shoe
with breathable and waterproof sole and upper that is structurally simple to
obtain.
Another object of the present invention is to provide a shoe with
breathable and waterproof sole and upper that can be manufactured by
resorting to the direct injection of polymeric material.
Another object of the present invention is to provide a shoe with
breathable and waterproof sole and upper that is tough and durable.
Another object of the present invention is to provide a shoe with
breathable and waterproof sole and upper that can be manufactured with
conventional systems and technologies.

This aim and these and other objects that will become better apparent
hereinafter are achieved by a shoe with breathable and waterproof sole and
upper, comprising a breathable and waterproof sole and an assembly that is
associated with said sole in an upward region and is constituted by:
- an external breathable upper, an internal lining and, between them,
a breathable and waterproof membrane,
- an at least partially perforated or breathable insole, which is joined
at least to said upper and said membrane,
said breathable and waterproof sole being at least partially
overmolded on said assembly, said shoe being characterized in that said
upper is provided with passages toward said membrane for the polymeric
material during the overmolding of said sole, said passages being arranged
substantially at the connecting region between said upper and said
membrane, said sole being joined hermetically and perimetrically to said
assembly in said connecting region.
Advantageously, the invention comprises a shoe with breathable and
waterproof sole and upper that comprises a breathable and waterproof sole
and an assembly that is associated in an upward region with respect to said
sole and is constituted by:
- an external breathable upper, an internal lining and, between them,
a breathable and waterproof membrane,
- an at least partially perforated or breathable insole, which is joined
at least to said membrane,
said shoe being characterized in that it comprises a waterproof inshoe,
which is at least partially perforated or breathable at the region of said sole
that is assigned to vapor permeation, said inshoe being associated in a
downward region with said insole and having a perimetric edge that
completely overlaps the connecting region between said insole and said
breathable and waterproof membrane so as to provide a perimetric seal, said
upper adhering to said inshoe, said breathable and waterproof sole being

hermetically associated with said assembly only at said upper and at the
exposed portion, if any, of said inshoe, without affecting the remaining
central part that corresponds to the region assigned to vapor permeation.
Conveniently, the invention comprises a method for manufacturing a
breathable and waterproof sole, which consists in:
- injection-molding at least one perforated lower sole layer,
- arranging, inside a mold, a breathable and waterproof membrane
element on said at least one perforated lower layer,
- arranging at least one breathable element on top of said breathable
and waterproof membrane element,
- covering with an adhesive film the surface of said at least one
breathable element that lies opposite said breathable and
waterproof membrane element,
- overmolding a peripheral skirt on said at least one perforated lower
layer and laterally to said at least one breathable element,
- removing said adhesive film.
The invention further comprises a method for manufacturing a
perforated portion of a breathable and waterproof sole, which consists in
injecting melted polymeric material into a mold constituted by a female
mold part and an upper closing mold part, said female mold part being
provided with pin-shaped inserts that protrude in the direction in which said
mold opens and are located at the region of said sole portion assigned to
vapor permeation, plate-like sealing means being interposed with
interference between the apex surface of said pin-like inserts and said upper
closing mold part.
Brief Description of the Accompanying Drawings
Further characteristics and advantages of the invention will become
better apparent from the description of some preferred but not exclusive
embodiments thereof, illustrated by way of non-limiting example in the
accompanying drawings, wherein:

Figure 1 is a transverse sectional view of a portion of a shoe
according to the invention, in a first embodiment;
Figure 2 is a perspective view of the portion of shoe of Figure 1;
Figure 3 is a transverse sectional view of a portion of a variation of
said first embodiment of the shoe, according to the invention;
Figure 4 is a transverse sectional view of a portion of the shoe
according to the invention, in a second embodiment;
Figure 5 is a schematic transverse sectional view of a first mold for
providing soles to be used in shoes according to Figure 4;
Figure 6 is a schematic transverse sectional view of a second mold for
providing soles to be used in shoes according to Figure 4.
Ways of carrying out the Invention
With reference to Figures 1 and 2, a first embodiment of a breathable
and waterproof shoe according to the invention is generally designated by
the reference numeral 10.
The shoe 10 comprises a breathable and waterproof sole 11, described
hereinafter, and an assembly 12 that is associated with it in an upward
region and is constituted by an external breathable upper 13, an internal
lining 14 and, between them, a breathable and waterproof membrane 15,
which is made for example of a material such as Gore-Tex® or the like.
The assembly 12 is closed in a downward region by an insole 16,
which, in this embodiment, is perforated but can be made of breathable
material.
Said insole 16 is connected to said upper 13, said lining 14 and said
membrane 15 in a common connecting region 17, for example by means of a
stitched seam 17a of the strobel type, which is per se known.
In this embodiment, the breathable and waterproof sole 11 is joined
peripherally or perimetrically and hermetically to the assembly 12 by
overmolding a portion thereof, as described hereinafter.
The sole 11 is composed of a perforated lower layer 18, which forms

the tread, and of an upper layer 19.
Said upper layer 19 is constituted by an external peripheral or
perimetric skirt 20 and is constituted centrally by a breathable element 21.
Said breathable element 21 is obviously arranged substantially at the
portion of the insole 16 that is assigned to vapor permeation and at the
perforated area of the tread.
A breathable and waterproof membrane element 22, made for
example of Gore-Tex® or the like, is arranged between said lower layer 18
and the upper layer 19.
Said layer of breathable and waterproof membrane 22 also comprises
a breathable lower protective layer 23, which is per se known.
Said breathable and waterproof membrane element 22 is connected
hermetically, in its peripheral region 24, to the assembly of the sole 11.
The breathable and waterproof membrane element 22 is arranged in a
flat pocket 25, which is formed on the upper surface of the lower layer 18.
In particular, the peripheral region 24 of said breathable and
waterproof membrane element 22 is sandwiched between the skirt 20 and
the lower layer 18.
The method for manufacturing the shoe 10 provides, for example, for
the manufacture of the lower layer 18 by direct injection in a mold, for the
subsequent application of the membrane element 22 in the mold, and for the
placement of the breathable element 21.
The assembly 12 is fitted on a last and inserted in the mold, placing
the insole 16 in contact with the breathable element 21.
At this point, the part of the sole 11 related to the external peripheral
skirt 20 is overmolded.
The upper 13 is provided with passages 26 toward the breathable and
waterproof membrane 15 for the polymeric material during the overmolding
of the sole portion 11 related to the skirt 20.
Said passages 26 are arranged substantially at the connecting region

17 between the upper 13, the lining 14, and the membrane 15.
In said connecting region 17, the sole 11 is hermetically joined to the
assembly 12.
Said passages 26 of the upper 13 in fact allow the fluid mass of
polymer (for example polyurethane), during the overmolding of the external
peripheral skirt 20, to reach the surface of the membrane 15, adhering and
anchoring itself thereto and forming a watertight seal.
In this described embodiment, these passages are provided for
example by forming a "deep undulation" 27 on the lower edge 28 of the
upper 13, so that the stitched seam 17a joins only the crests 28a of said
"deep undulation" 27 to the membrane 15 and to the insole 16.
In this way, the melted mass of polymer penetrates through said "deep
undulation" 27, completely surrounding the stitched seam 17a, penetrating
into the holes of said stitched seam 17a, and bonding with the membrane 15.
It should be stressed that the skirt 20 completely overlaps the stitched
seam 17a.
A variation of this first embodiment of the shoe, now generally
designated by the reference numeral 100, is shown in Figure 3.
This variation differs from the previously described embodiment only
in the region, now designated by the reference numeral 117, for connection
of the upper 113, of the lining 114 and of the breathable and waterproof
membrane 115 to the perforated insole 116.
In this case, the lower edges of the lining 114, the membrane 115 and
the upper 113, generally designated by the reference numeral 128, are
folded and glued under the perforated insole 116 and lie adjacent to the
breathable element 121 of the sole 111.
Said lower edges 128 are in practice locked in a sandwich-like
fashion between the perforated insole 116 and the skirt 120.
In this variation also, the upper 113 is provided with passages 126
toward the breathable and waterproof membrane 115 for the polymeric

material during the overmolding of the sole portion 111 related to the skirt
120.
These passages 126 are also arranged substantially at the region 117
for connection between the upper 113, the lining 114 and the membrane
115.
In said connecting region 117, the sole 111 is hermetically joined to
the assembly 112.
Said passages 126 are constituted by through holes 127, which are
provided on the upper portion 113a that is folded under the insole 116.
Similarly to what has been described earlier, said passages 126 of the
upper 113 allow the fluid mass of the polymer (for example polyurethane),
during the overmolding of the external perimetric skirt 120, to reach the
surface of the membrane 115, adhering and anchoring thereto and forming a
watertight sealing area.
Figure 4 illustrates a second embodiment of a shoe according to the
invention, generally designated by the reference numeral 200.
Said shoe 200 comprises a breathable and waterproof sole 211, which
is substantially similar to those described earlier, and an assembly 212,
which is associated with said sole in an upward region and is constituted by
an external breathable upper 213, an internal lining 214 and, between them, .
a breathable and waterproof membrane 215, which is made for example of a
material such as Gore-Tex® or the like.
The assembly 212 is closed in a downward region by an insole 216,
which is perforated in this embodiment but can be made of breathable
material.
Said insole 216 is joined to said lining 214 and to said membrane 215
in a common joining region 217, for example by means of a stitched seam
217a of the strobel type, which is per se known.
The shoe 200 further comprises a waterproof inshoe 227, which is
associated in a downward region with the insole 216 and is interposed

between said insole and the sole 211.
In practice, said waterproof inshoe 227 is constituted by a base insole
229, in which the peripheral edge 230 completely overlaps the connecting
region 217 between the insole 216 and the breathable and waterproof
membrane 215, so as to provide a peripheral seal formed by a sealing area
:227a.
In particular, said peripheral edge 230 forms side walls 230a of the
inshoe 227 that rise beyond the stitched seam 217a, adhering completely to
the membrane 215 and providing said peripheral seal.
The upper 213 adheres to said inshoe 227 and its lower edge 228 is
folded and glued in contact below the inshoe 227.
Said inshoe 227 can be provided by direct overmolding on the
assembly (particularly on the membrane 215), in which case the fluid
polymer mass surrounds the stitched seam 217a as described in the previous
cases, or said inshoe can be pre-molded or glued, in any case taking care to
seal the region of the stitched seam 217a.
Said inshoe 227 is provided with suitable holes 231 (or, in an
equivalent manner, can be breathable) at the region of the sole 211 assigned
to permeation; it is evident that the inshoe 227, in an extreme case, can also
be perforated with a single "macroperforation".
A structure of this type allows to provide the sole 211 separately and
to apply it subsequently, for example by gluing, to the assembly 212 with
the inshoe 227.
As an alternative, it is possible to provide the shoe 200, as described
in the previous examples, by providing part of the sole 211 by overmolding
on the assembly 212.
The sole 211, in this embodiment, has substantially the same structure
as in the previously described examples of shoes.
The method is for example as follows: the lower layer 218 is provided
by direct injection in a mold.

The membrane element 222 is then applied in the mold and the
breathable element 221 is positioned.
The assembly 212 is fitted on a last, which is inserted in the mold,
placing the inshoe 227 in contact with the breathable element 221.
At this point, the part of the sole 211 related to the outer peripheral
skirt 220 is overmolded.
In any case, the sole 211 is hermetically associated with the assembly
212 only at the upper 213 and at the exposed portion of the inshoe 227 (i.e.,
the portion that is not covered by the fold of the upper 213 and is optionally
not present), without affecting the remaining central part that corresponds to
the region assigned to vapor permeation.
It is evident that in order to produce a sole 211 such as the one
described, to be applied below an assembly 212, for example by gluing, it is
necessary to perform refinements in order to prevent the melted polymer,
during the injection steps, from covering the parts assigned to vapor
permeation.
For example, with reference to Figures 5 and 6, a method for
manufacturing a breathable and waterproof sole is as follows.
A perforated lower sole layer 318, which corresponds for example to
the tread of the sole, is injection-molded in a mold 340 formed by a female
mold part 341 and by an upper closing mold part 342.
Keeping for example the same female mold part 341, a breathable and
waterproof membrane element 322 is arranged in the mold so as to rest on
the perforated lower layer 318.
A breathable element 321 is then arranged above said breathable and
waterproof membrane element 322.
Said breathable element 321 has an adhesive film 321b on the surface
321a that lies opposite with respect to said breathable and waterproof
membrane element 322.
At this point, the female mold part 341 is closed with an upper female

mold part 342a and melted polymer is overmolded in order to provide the
peripheral skirt 320.
Said peripheral skirt 320 laterally surrounds the breathable element
321.
The mold 340 is opened and the adhesive film 321b is removed.
Said adhesive film allows to prevent melted polymer from seeping
above the breathable element 321, covering it and thus limiting its
breathability.
Likewise, in order to prevent the melted polymer from seeping above
the vapor permeation holes during the injection of the lower layer 318 of the
sole 311, the molding process provides for particular refinements.
The female mold part 341 is provided with pin-shaped inserts 343,
which protrude in the direction in which the mold 340 opens and are located
at the region of the sole assigned to vapor permeation.
Plate-like sealing means 345 are interposed with interference between
the apex surface 344 of the pin-shaped inserts 343 and the upper closing
mold part 342.
Said plate-like sealing means 345 are constituted by plates 346 made
of rigid polymeric material, to be arranged at each pin-shaped insert 343.
In particular, said plates 346 are slightly wider than the corresponding
pin-shaped insert 343.
Said plates 346, kept pressed on the apex surface 344 of the pin-
shaped inserts 343, prevent, during injection, the melted polymer mass from
seeping above the apex surfaces 344, obstructing the vapor permeation
holes that form once the sole 311 is extracted.
In practice it has been observed that the invention thus described
solves the intended aim and objects.
In particular, the present invention provides a shoe with breathable
sole and upper that ensure complete waterproofness, since all the possible
regions of wrater infiltration between a breathable and waterproof sole and a

likewise breathable and waterproof "upper assembly" are in fact completely
sealed.
Moreover, the present invention provides a shoe with breathable and
waterproof sole and upper that is structurally simple to obtain.
Moreover, said shoe with breathable and waterproof sole and upper
can be manufactured by using the technique of direct injection of polymeric
material.
In this regard, the invention has advantageously solved, thanks to
refihements in the injection-molding process, problems linked to the
seepage of melted polymeric material in regions intended for vapor
permeation, thus ensuring high standards of breathability.
The invention thus conceived is susceptible of numerous
modifications and variations, all of which are within the scope of the
appended claims; moreover, all the details may be replaced with other
technically equivalent elements.
In practice, the materials used, so long as they are compatible with the
specific use, as well as the dimensions, may be any according to
requirements and to the state of the art.
The disclosures in Italian Patent Application No. PD2004A000014
from which this application claims priority are incorporated herein by
reference.
Where technical features mentioned in any claim are followed by
reference signs, those reference signs have been included for the sole
purpose of increasing the intelligibility of the claims and accordingly such
reference signs do not have any limiting effect on the interpretation of each
element identified by way of example by such reference signs.

WE CLAIM
1. A shoe (200) provided with breathable and waterproof sole and upper,
comprising a breathable and waterproof sole (211) and an assembly (212),
which is associated with said sole (211) in an upward region and is constituted
by:
- an external breathable upper (213), an internal lining (214) and, between
them, a breathable and waterproof membrane (215);
- an at least partially perforated or breathable insole (216), which is joined
at least to said breathable and waterproof membrane (215);
said shoe (200) being characterized in that it comprises a waterproof
inshoe (227), which is at least partially perforated or breathable at the
region of said sole (211) that is assigned to vapor permeation, said inshoe
(227) being associated in a downward region with said insole (216), its
peripheral edge (230) completely overlapping the connecting region (217)
between said insole (216) and said breathable and waterproof membrane
(215) so as to provide a peripheral seal, said upper (213) adhering to said
inshoe (227), said breathable and waterproof sole (211) being associated
hermetically and peripherally with said assembly (212) only at said upper
(213) and at the exposed portion, if any, of said inshoe (212), without
affecting the remaining central part that corresponds to the region
assigned to vapor permeation.

2. The shoe (200) according to claim 1, characterized in that said insole (216) is
joined to at least said breathable and waterproof membrane (215) in said
connection region (217) by means of a stitched seam (217a) of the strobel type,
said peripheral edge (230) forming lateral sides (230a) of said inshoe (227),
which rise beyond said stitched seam (217a), adhering completely to said
breathable and waterproof membrane (215) and forming said peripheral seal,
said upper (213) adhering to said inshoe (227) and having a lower edge (228)
that is folded and glued so as to adhere under said inshoe (227).
3. The shoe (200) according to claim 2, characterized in that said inshoe (227) is
provided by direct overmolding on said assembly (212), particularly on said
breathable and waterproof membrane (215).
4. The shoe (200) according to claim 3, characterized in that said inshoe (227) is
provided separately and is coupled hermetically to said assembly (212) by gluing.


A shoe (200) with breathable and waterproof sole and upper comprising a breathable
and waterproof sole (211) and an assembly (212), which is associated with said sole
(211) in an upward region and is constituted by an external breathable upper (213), an
internal lining (214) and between them a breathable and waterproof membrane (215),
an at least partially perforated or breathable insole (216), which is joined at least to
said breathable and waterproof membrane (215). The shoe (200) comprises a
waterproof inshoe (227) which is at least partially perforated or breathable at the region
of said sole (211) that is assigned to vapor permeation, said inshoe (227) being
associated in a downward region with said insole (216), its peripheral edge (230)
completely overlapping the connecting region (217) between said insole (216) and said
breathable and waterproof membrane (215) so as to provide a peripheral seal, said
upper (213) adhering to said inshoe (227), said breathable and waterproof sole being
associated hermetically and peripherally with said assembly (212) only at said upper
(213) and at the exposed portion, if any of said inshoe (212), without affecting the
remaining central part that corresponds to the region assigned to vapor permeation.

Documents:

01905-kolnp-2006-abstract.pdf

01905-kolnp-2006-claims.pdf

01905-kolnp-2006-correspondence others-1.1.pdf

01905-kolnp-2006-correspondence others.pdf

01905-kolnp-2006-description(complete).pdf

01905-kolnp-2006-drawings.pdf

01905-kolnp-2006-form-1.pdf

01905-kolnp-2006-form-2.pdf

01905-kolnp-2006-form-26.pdf

01905-kolnp-2006-form-3.pdf

01905-kolnp-2006-form-5.pdf

01905-kolnp-2006-international publication.pdf

01905-kolnp-2006-international search authority report.pdf

01905-kolnp-2006-pct form.pdf

01905-kolnp-2006-priority document.pdf

1905-KOLNP-2006-ABSTRACT 1.1.pdf

1905-KOLNP-2006-CANCELLED PAGES.pdf

1905-KOLNP-2006-CLAIMS 1.1.pdf

1905-KOLNP-2006-CORRESPONDENCE OTHERS 1.2.pdf

1905-kolnp-2006-correspondence.pdf

1905-KOLNP-2006-DESCRIPTION (COMPLETE) 1.1.pdf

1905-KOLNP-2006-DRAWINGS 1.1.pdf

1905-kolnp-2006-examination report.pdf

1905-KOLNP-2006-FORM 1.1.1.pdf

1905-kolnp-2006-form 18.pdf

1905-KOLNP-2006-FORM 2.1.1.pdf

1905-kolnp-2006-form 26.pdf

1905-KOLNP-2006-FORM 3.1.1.pdf

1905-kolnp-2006-form 3.pdf

1905-kolnp-2006-form 5.pdf

1905-KOLNP-2006-FORM-27.pdf

1905-kolnp-2006-granted-abstract.pdf

1905-kolnp-2006-granted-claims.pdf

1905-kolnp-2006-granted-description (complete).pdf

1905-kolnp-2006-granted-drawings.pdf

1905-kolnp-2006-granted-form 1.pdf

1905-kolnp-2006-granted-form 2.pdf

1905-kolnp-2006-granted-specification.pdf

1905-KOLNP-2006-OTHERS.pdf

1905-KOLNP-2006-PA.pdf

1905-kolnp-2006-reply to examination report-1.1.pdf

1905-KOLNP-2006-REPLY TO EXAMINATION REPORT.pdf

abstract-01905-kolnp-2006.jpg


Patent Number 247060
Indian Patent Application Number 1905/KOLNP/2006
PG Journal Number 13/2011
Publication Date 01-Apr-2011
Grant Date 28-Mar-2011
Date of Filing 07-Jul-2006
Name of Patentee GEOX S.P.A.
Applicant Address VIA FELTRINA CENTRO, 16 31044 MONTEBELLUNA, LOCALITA BIADENE-(TREVISO)
Inventors:
# Inventor's Name Inventor's Address
1 MARIO PLOEGATO MORETTI VIA ANTONINI, 7 31035 CROCETTA DEL MONTELLO
PCT International Classification Number A43B7/12; A43B9/02
PCT International Application Number PCT/EP2005/000524
PCT International Filing date 2005-01-20
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 PD 2004A000014 2004-01-22 Italy