U.S. patent number 3,754,339 [Application Number 05/245,477] was granted by the patent office on 1973-08-28 for athlete's foots preventive device.
Invention is credited to Suetsugu Terasaki.
United States Patent |
3,754,339 |
Terasaki |
August 28, 1973 |
ATHLETE'S FOOTS PREVENTIVE DEVICE
Abstract
A device for preventing athlete's foot or other eczema is
provided which operates with the walking motion of the user's feet
and includes bellows units adapted to be arranged beneath the
plantar arches of his feet. The bellows units are each operable to
expand and contract as the user's heel rises and falls and thus
eject air into the interior of the shoe through orifices formed in
the walls of the unit. Such ejection of air causes air flows in the
shoe interior effectively to prevent any accumulation of moisture
or temperature therein.
Inventors: |
Terasaki; Suetsugu (Fukuoka,
JA) |
Family
ID: |
22926819 |
Appl.
No.: |
05/245,477 |
Filed: |
April 19, 1972 |
Current U.S.
Class: |
36/3B;
36/147 |
Current CPC
Class: |
A43B
7/081 (20130101) |
Current International
Class: |
A43B
7/08 (20060101); A43B 7/00 (20060101); A43b
007/06 () |
Field of
Search: |
;128/588
;36/3B,3R,76R,8.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Claims
What is claimed is:
1. An athlete's foot preventive device comprising bellows units
each comprised of a base plate adapted to be arranged on the top
sole surface of the shoe and a generally hill-shaped top section
formed of an elastic sheet material enabling the section to
maintain its own shape in the free state and having a top contour
to fit the plantar arch of the user's foot, defining together with
a bottom section formed of a portion of said base plate an interior
space large enough to fill the space formed between the foot sole
and the top sole surface of the shoe as worn on the user's foot
when the user's heel is raised, an air inlet port formed in the
sloped inside portion of said top section and having a non-return
valve means, a tubular air conduit formed on said base plate in a
position to extend along the periphery of the user's foot and in
communication with the interior space of the respective bellows
unit, and a multitude of small air orifices formed through the
peripheral wall of said top section of said bellows unit and
through the wall of said tubular air conduit.
2. An athlete's foot preventive device as claimed in claim 1 in
which said tubular air conduit includes a portion formed to extend
transversely through the space under the roots of the user's toes
and having small air orifices opened to eject air toward the spaces
between the toes.
Description
This invention relates to devices for preventing athlete's foot or
other eczema usually caused on feet, as they often get stuffy in
shoes and is intended to form air flows in shoes thereby
effectively to prevent any accumulation of moisture or temperature
around the feet therein.
Sweating or skin respiration of foot skin usually causes
accumulation of moisture within shoes worn thereon and thus causes
the feet to get or musty stuffy. This phenomenon is remarkable
particularly between toes, frequently causing offensive skin
diseases including athlete's foot or other eczema. In order to
prevent such phenomenon it is necessary to prevent any stagnation
of moisture or temperature within the shoes surrounding feet.
The primary object of the present invention is to provide a device
including bellows unit which are interposed between the user's feet
and shoes worn thereon and operable with the foot motion during
walking to cause air flows in the interior of the shoes.
Another object of the invention is to provide a device of the kind
described which includes bellows units operable to draw in external
air and eject it into the shoe interior and thus servable not only
to cause air flows therein but also to force out any moist air
present to the outside of the shoes so that the air therein may
always be kept fresh.
A further object of the present invention is to provide a device of
the kind described which includes means for conducting air to
particular locations around feet as it is ejected from the bellows
for the purpose of positively assisting the formaton of air flows
in local places where moisture is particularly liable to
collect.
Other objects of the present invention are to provide for each of
the bellows units an air inlet port enabling it to inhale air at
all times in an efficient manner, to provide for each bellows unit
an air inlet tube arranged in a position not to be affected by the
walking motion of the user's foot in any undesirable manner and
thus enabling the bellows to act positively to inhale external air,
and to provide means for attaching the bellows units to the
underside of the plantar arches of the user's feet or for arranging
the same in shoes in a predetermined position to lie under the
plantar arch of the respective foot.
To attain these objects, the present invention provides an
athlete's foot preventive device which includes bellows units
formed of appropriate elastic sheet material such as relatively
thick rubber or flexible synthetic resin sheet material and capable
of maintaining their own shape in the free state but elastically
deformable under external force, said bellows units being comprised
each of a bottom section and a generally hill-shaped top section
having a top contour substantially conforming to the plantar arch
of human foot and defining together with the bottom section an
interior space large enough to fill the space formed between the
plantar arch and the top sole surface of the shoe put on the foot
when the user's heel is raised therein. Such bellows units are made
in a right-and-left symmetrical pair for use on right and left
feet. Also, two bellows unit of the pair are each formed with an
air inlet port or aperture including non-return valve means in
those sloped inside walls of the respective top sections which face
each other when such bellows units are arranged under the plantar
arches of the user's feet.
Also, the bellows units are each provided with an air inlet tube
which is connected at its base end to the air inlet port of the
unit for communication with the interior space thereof and can be
led along the inside wall of the shoe substantially to reach the
top opening thereof through which the user's foot is inserted,
thereby anabling the bellows unit to inhale external air with
efficiency.
A multitude of small air orifices are formed through the peripheral
walls of the bellows units as well as through the walls of tubular
air conduits extending from the unit bodies in communication with
the interior space therein.
The bellows units described above may be made for use as an
attachment to respective feet with the provision of appropriate
extensible string or lace means or be formed on respective base
plates adapted to be arranged in shoes on the top sole surface
thereof.
In either case, the device of the invention is arranged in the
shoes between the plantar arch of the user's feet and the top sole
surface of the shoes and each time when his heels are raised in
walking, the associated bellows unit restores its free or original
shape to inhale air. On the other hand, when his heel is lowered
the bellows unit is compressed to eject the air previously held in
its interior space through the air orifices directly to the outside
of the unit or through the intermediary of the tubular air conduits
to required locations such as between the toes so that the air in
the shoe is effectively disturbed and replaced by external fresh
air.
The present invention will now be described in further detail in
connection with the accompanying drawings, which illustrate a few
practical embodiments of the invention and in which:
FIG. 1 is a plan view of an eczema preventive device embodying the
present invention and designed for attachment to feet;
FIG. 2 is an explanatory side view showing one half set of the
device of FIG. 1 as attached to the right foot, looking from the
left-hand side thereof;
FIG. 3 is a vertical cross-sectional view taken through the line
3--3 in FIG. 2;
FIG. 4 is a cross-sectional elevation showing one half set of an
athlete's foot preventive device of the sole type embodying the
present invention and taken through the line 4--4 in FIG. 5;
FIG. 5 is a plan view of same;
FIG. 6 is a cross-sectional view taken through the line 6--6 in
FIG. 5;
FIG. 7 is a cross section taken through the line 7--7 in FIG. 5;
and
FIG. 8 is a cross section taken through the line 8--8 in FIG.
5.
Referring first to FIG. 1, the device comprises a pair of right and
left bellows units of symmetrical configuration and formed of
elastic sheet material. Each of the bellows units is comprised of a
top section 2 having a top contour substantially conforming to the
plantar arch of one's foot and a bottom section 3 and can maintain
its own shape in the free state. The top section 2 is generally
hill-shaped, defining together with the bottom section 3 an
interior space 4 large enough to fill the space formed between the
plantar arch of the user's foot and the top sole surface of the
shoe worn thereon when the user's heel is raised. The bottom
section 3, formed of elastic sheet material similar to that of the
top section, is joined to the latter along the periphery thereof
and has a flattened downwardly convex spherical shape in the free
state.
As clearly shown in FIGS. 1 and 3, the bellows units are each
provided with an air inlet port 5 opening through the sloped side
wall of the top section 2 which faces the corresponding side wall
of the top section of the other unit when the units are arranged
under feet. Provided in association with the air let port 5 is a
non-return valve comprising a flap diaphragm 5' as shown. An air
inlet tube 6 is secured at its base end to the air inlet port 5 in
communication with the interior space 4 of the bellows unit and is
formed of a flexible but hardly collapsible tubular material,
having an appropriate length to enable its upper or free end to be
led to the top opening of the shoe.
A multitude of small air orifices 7 are formed in the peripheral
walls of the bellows unit.
The bellows units 1R and 1L are each fitted with an extensible
string 8 such as a rubberized band so that the user may be readily
attach them the plantar arches before he puts on the shoes. It is
to be noted that the air inlet tubes 6 are each led to the top
opening 10 of the shoe, passing between the inside face of his foot
11 and the adjacent shoe wall.
When the user walks with shoes 9 put over the device of the
invention, fitted directly to his feet as described above, each
time his heels are raised the bellows units are allowed to restore
their original shape shown in FIGS. 2 and 3 by the solid lines
thereby to inhale air through the non-return valves. On the other
hand, each time his heels are lowered the units are compressed as
indicated in these figures by the dotted lines and eject air to the
spaces around his feet through the air orifices 7 to cause air
flows in the shoes. In the illustrated embodiment, the air inlet
tube 6 provided in connection with the air inlet port enables the
bellows unit efficiently to inhale fresh air from outside so that
any moist air formed in the shoes can be positively replaced by the
fresh external air. The provision of air inlet tubes 6 is
particularly advantageous in cases where the device is used with
boots, rain shoes or other high shoes.
The air inlet port 5, being provided in the sloped inside wall of
the top section 1, is at all times positioned apart from the foot
sole, enabling free inhaling action of the bellows unit. Also, the
air inlet tube 6 can function free from any undesirable influences
of the foot motion as it is led along the inside of the foot, which
is always spaced from the adjacent shoe wall.
The bellows units can also be made in the form shown in FIGS. 4 to
8.
As seen in these figures, the top section of the bellows unit 101
is formed on a base plate 103 adapted to be placed on the top sole
surface of the shoe and in a position to face the planar arch of
the user's foot. The top section 102 is generally hill-shaped
having a top contour substantially conforming to the plantar arch
of the user's foot and in the free state defines a large interior
space 104 in the unit together with a bottom section thereof which
is formed as a part of the base plate 103. Thus, when the user's
heel is raised in the shoe for walking, the top section 102 can
expand to fill the space formed between the shoe sole and the foot,
keeping contact with the plantar arch thereof. Numeral 105
indicates an air inlet port formed in the sloped inside portion of
the top section 102 of the unit and provided with a non-return
valve, for example, in the form of a valve diaphragm 105'.
In this embodiment, the base plate 103 is so shaped as to extend
over the entire sole surfaces of the user's foot along the planar
top surface of the shoe sole and carries a tubular air conduit 113
which extends through the space formed between the top surface of
the plate and the user's foot and is at all times communicating
with the interior space 104 of the bellows unit. The air conduit
113 thus arranged on the base plate along the foot periphery
includes a transversely extending portion or conduit 113a lying
between the shoe sole and the root portions of the toes. This
arrangement gives no discomfort to the user's foot and the device
with such arrangement can be employed without causing the user to
feel uneasy about the presence of such device in his shoes.
Also, in this embodiment, the tubular air conduits 113 and 113a are
continuously formed by raising the extended marginal portion of the
elastic sheet forming the top section 102 and are adhesively
closely joined on opposite sides to the top surface of the base
plate 103 in airtight relation thereto in the same manner as the
peripheral edges of the top section 102.
As in the previous embodiment, a multitude of air orifices 107 are
formed in the peripheral portion of the top section 102 and in the
wall of the air conduit 113 at appropriate locations thereon. The
transversely extending conduit portion 113a, lying under the toe
roots, is formed with a multitude of air orifices 107a opening
toward the gaps between the toes.
When the user, who wears shoes having the base plates 3 arranged on
the shoe soles, raises his heels for walking, the top section 102
of the bellows unit 101 expands to restore its original shape, as
shown in FIG. 4 by the solid lines, and inhales air. On the other
hand, when the heel is lowered, the top section is compressed as
indicated by the dotted lines and ejects air around the foot
through air orifices 107 while positively causing air flows in
locations as between toes where moisture or temperature is liable
to collect.
It will be obvious that the bellows units 101 described above can
readily be provided with an air inlet tube 106 like the one in the
previous embodiment.
While the invention has been shown in a few preferred forms, it is
obvious to those skilled in the art that it is not so limited, but
is susceptible of various changes and modifications without
departing from its spirit and scope of the claimed invention.
* * * * *