Object of the Invention
The present invention refers to a sole for footwear
with an improved aeration system, contributing basic novel
features and important benefits with respect to known soles
used for the same purposes in the current state of the art.
More specifically, the invention proposes the
development of a sole provided with a system allowing an
effective aeration and transpiration of the user's feet,
thanks to a predetermined perforated area which, according
to the invention, will be located in the part of the sole
bridge, preventing possible contact with the ground, which
could soil or block the holes, through which the exchange
between inside and outside of the footwear and the external
space is produced and from where (and towards) the exchanged
air circulates (returns) longitudinally, in both directions,
until the heel and sole areas, thanks to the specific shapes
adopted by the internal economisers.
The field of application of the invention obviously
includes the footwear manufacturing industry.
Background of the Invention
It is known that in fact the use of closed footwear
almost always involves excessive sweating of the user' s
feet, a permanent source of annoyance, smells and sometimes
other problems of foot health. To solve this type of
problem, footwear manufacturers are making considerable
efforts tending to provide better materials and, whenever
possible, means facilitating improved aeration of the feet,
maintaining them fresher and in conditions preventing extra
sweating.
According to a known embodiment in the state of the
art, a sole may incorporate passing holes distributed
throughout the sole, in the spaces existing between the
protruding formations usually given to soles, and through
which an exchange of air from inside to outside is possible,
hence obtaining freshening of at least this area and
therefore, improving the footwear use conditions. However,
this embodiment also involves other practical problems,
since, although in general they do not come into contact
with the ground, due to the formation protruding from the
sole bottom, the truth is that when they retain dirt or are
blocked for some reason, it is very difficult to clean them,
precisely due to the fact that the areas in which they are
located are generally narrow, not permitting easy access.
Moreover, as will be understood, there are many other
drawbacks also derived from the fact that the sole area in
which they are located is that supporting the greatest
pressure from the user's foot, especially when he is moving,
so that this fact also hinders the entrance of air. Anyway,
the execution of holes in the sole bottom area only provides
local aeration and not the entire lower surface of the foot.
According to the above, the present invention has been
proposed to develop a sole for footwear, permitting
currently existing problems to be solved. This object has
been reached with a sole, which in a predetermined area,
corresponding to the bridge, is intended to be perforated
with a plurality of passing holes. This offers the benefit
that on normally being an elevated area between the sole
bottom and the heel, it is never in continuous contact with
the ground, so that it is difficult that the holes are
directly accessible to dirt and other elements. Anyway, as
it is generally a smooth surface in most classes of footwear
existing, possible dirt that may be introduced in the holes
of the perforated area, may be easily removed. Moreover,
according to the invention, along the inside face of the
sole and matching the perforated area, the arrangement of a
protection plate of goretex may be foreseen or of any other
conventional material, so that according to its
characteristics of permitting passage in a single direction
internal sweat may leave whilst the entry of external
humidity is prevented.
It is an advantage that the sole of the invention
provides complete aeration of the entire lower surface of
the feet. For this purpose, from the perforated exchange
area made in the sole bridge, a circuit and passage has been
made which extends longitudinally towards both adjacent
areas of the sole bottom and heel. This circuit is obtained
by the execution of numerous recesses and notches, like
stepped advantages, in each one of the sole economisers. In
fact, according to the preferable embodiment, the sole
economisers are extended in a transverse and parallel sense
to each other, arranging these recesses in determined
positions, through which air passage is permitted in both
directions with the own movement of the user's feet. In this
simple way, an effective, practical and easy solution has
been given to the problem currently existing.
Brief Description of the Drawings
These and other features and advantages of the
invention may be understood more easily from the following
detailed description of a preferred embodiment, given
exclusively as an illustrative and non-limiting example,
referring to the attached drawings wherein;
Figure 1 shows an upper plan schematic view of a sole
constructed in accordance with the present invention, and Figure 2 show another lower plan schematic view of the
same sole as that shown in Figure 1.
Description of the Preferred Embodiment
The detailed description of the preferred embodiment of
this invention will be described, as has already been
mentioned, taking as a reference the attached drawings, in
which the same numerical references are used to designate
equal or similar parts. Firstly, observing Figure 1, an
upper plan view of a sole of the invention may be seen
generally indicated with the reference number 1 and whose
general configuration corresponds to that of any known sole.
Conventionally, the sole has distributed throughout its
inside space, numerous economising components, generally
indicated with reference numbers 2 and 3, extended
transversely and which in the sole bottom area consists of
parallel undulated shapes whilst in the heel area, they are
rectilinear shapes, also parallel and crossed by other
shapes, likewise parallel and extended in a longitudinal
direction. Anyway, all these economiser components have
recesses or notches 4,5' , in different positions, several of
these notches corresponding to each economiser component.
Different to the front areas, the bridge has an area 5
with predetermined dimensions, that in general may adopt any
shape considered relevant and in which passing holes 6 have
been made, distributed over the surface of said area, these
holes being precisely the ones entrusted with letting air
circulate between the inside space and the outer
surroundings. The mentioned area 5, may be surrounded, if
desired, by an elevated protruding shape, closed over
itself, as indicated by reference number 7, by means of
which a housing is provided for the final fitting of a
goretex plate, as previously explained, which may be fixed
with adhesive or any other conventional means, making it
possible for moisture to circulate only in one direction,
that is, from inside to outside.
Along the lower surface of the sole, as may be
appreciated in Figure 2 of the drawings, area 5 where the
passing holes 6 are distributed, has no limit whatsoever and
the bridge area is generally smooth. This circumstance
favours the cleaning of said holes if dirt enters them and
could even block them.
The arrangement of the holes 6 in the bridge area and
their communication with the entire surface of the sole
bottom and heel areas, thanks to the recesses 4, 5' made in
the internal economisers permits the distribution of air
throughout all the sole and the freshening of all the lower
surface of the user's foot. The movement of the foot itself
and the bending of the sole, pushes the air longitudinally
in both directions, as indicated by the arrows shown on some
of the mentioned recesses 4, 5', as well as in a transverse
direction in the heel area, as also shown with other arrows.
Therefore, aeration is complete, preventing the drawbacks
already indicated and the feeling of comfort and freshness
for the user is considerably increased.
Figure 2 also shows other holes 8 made in determined
positions of the sole, in the narrow channels left between
protruding shapes 9 of the type, mostly used in footwear
soles. This representation of holes 8 corresponds to that
known in the state of the art and has only been carried out
to illustrate the previous comments, that is, to understand
he comparative difficulty existing with the conventional
art, compared with this invention. In fact, the position of
the holes 8, in general affecting all the sole bottom area,
only permits local aeration, hindered by the pressure of the
front itself and therefore an incomplete solution for
existing problems, besides the difficult cleaning, intrinsic
to their location. However, the arrangement of holes in the
bridge area, sufficiently separated from the soles and with
a smooth outside surface, together with he easy of air
circulation throughout the total inside space of the sole,
thanks to the recesses or notches 4,5', allows the aeration
problems of the user's feet to be efficiently solved,
meaning a more comfortable and beneficial use of the sole
constructed according to the teachings of the present
invention.