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Патент USA US3077895

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Feb. 19, 1963
E. PIRHONEN
3,077,886
SHOE SOLE CONSTRUCTION
Filed Jan. 16, 1961
FIG.
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A ‘__6
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JNVENToR.
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AT TORNEYS
Unitje States
1
3,077,886
’
SHÜE SGLE CÜNSTRUC'I‘IÜN
Emo Pirhonen, Seminaari, Kajaani, Finland
Filed Jan. 16, 1961, Ser. No. 83,027
2 Claims. (Cl. 12S-_607)
My invention relates primarily to a new and improved
construction for shoes of all types; in particular, my in
vention is concerned with novel means for affording sup
port to a shoe without inhibiting the normal movements
of each part of the foot.
It has been found that the lateral midfoot portion of
the foot tends to become misaligned longitudinally due to
fatigue, imbalance, proration of the foot during walking
and other causes. The result often is a lowering of the
midfoot arch and flattening of the lower surface of the
foot. Such a condition produces fatigue in the ligaments
and tendons of the foot and leg, ultimately resulting in the
3,ß77,886
"ice
Patented Feb. 19, 1963".
2
FIGURE 6 is a vertical section view taken on the line
6_6 of FIGURE 1.
Referring to the drawings in detail my invention, desig
nated in its entirety by the reference character A, consists
of a shoe body 10 characterized by a foot engaging upper
body member 12, an insole 14, a conventional outsoleló
and heel 13.
v
`
,
It can be appreciated that thus far a somewhat conven
tional shoe has been described; that is to say, a shoe hav
ing an outsole and heel, an insole, and an upper. Con
ventional shoe construction, as explained, is easily worn
out and loses its support strength quickly because the
soles 14 and 16 are more or less uniform in transverse
cross section and thus have the same degree of flexibility
from one end to the other. Rapid deterioration- occurs
because of the nature of the loads imposed on the shoe
during walking or running. It is well known that the
weight of a person is progressively transmitted from the
heel to the toe in walking, causing the weight to roll medi
injury thereto. It is also apparent that such consequences 20 ally inward from the outer longitudinal arch to the region
of the great toe. This weight shift imparts downward
ruin «the shape of the shoe prematurely, thereby adding to
pressures to the region of the arch where it must be re
the expense of buying shoes.
sisted by the shoe(
’
Accordingly it is an object of my invention lto provide
In meeting this problem, I have provided a new and
functional failure of the elements themselves or serious
an improved shoe.
different type of support member or insole 14 extending
Another object of the invention is to provide an im 25
from the toe longitudinally to the heel, as shown by the
proved shoe construction adapted to prevent premature
dotted ilines in FIGURE 1.
failure or stretching of a shoe.
Support insole 14 is preferably made of a sheet of uni
form
thickness plastic material, either of the thermo
means for imparting extra strength to a shoe in those areas
or thermosetting type; it may also be fabricated of
requiring added support without sacrificing the iiexibility 30 plastic
a combination material such as vinyl-to-metal laminates
necessary and desirable in other areas of the shoe.
or it may be fashioned of metal alone. The important
Another object of my invention is to provide a shoe
consideration
is that t-he support insole 14 exhibits dif
having an insole characterized by gradations of stiffness
ferent degrees of stiffness (or conversely, flexibility) from
and adapted to provide support where support is needed
35 the toe end 22 thereof to the heel end 24 thereof. My
and flexibility where flexibility is needed.
invention contemplates a gradation of decreased ileidbility
Yet another object of my invention is to provide a novel
in the following manner: From the toe end 22 to a point
sole construction for a shoe characterized by simplicity in
slightly therebeyond (as illustrated by line B-B in FIG
design, ease of manufacture and economical in cost, where
URES 2 and 3), sole 14 is totally iniiexible, from this
in the insole, the upper body member and outsole are
40 point to point C-C sole 14 is very ñexible, from point
joined in a new and novel manner.
C-C to point D-D sole 14 is less ñexible than from
A further object of my invention is to provide in a
point B-B to point C-C, and from point D-D to point
shoe, novel means for distributing the weight in the shoe
E-E the sole 14 approximates the hardness or inflex
in accordance with correct orthopedic techniques without
ibility of the toe section.
adding greatly to the cost of the shoe and without affect 45
As shown in FIGURE 5, a built up arch side wall 2S,
ing other properties of the shoe.
which is inñexible, is provided, for supporting the inner
A further object of my invention is to provide novel
Still another object of my invention is to provide a new
arch of the wearer, as part of the support sole 14. The
and improved shoe having superior structural character
support sole 14 may be perforated, as at 26, to provide
istics and having means for providing ventilation therein
ventilation. Securing of the support sole 14 within the
50 bottom of the shoe may be accomplished by means of
without appreciable loss `of strength.
I shall not here attempt to set forth and indicate all of
egs or projections 28, formed as part of sole 14 and
the various objects and advantages incident to my inven
secured in holes formed in the `outer sole 16.
The ylower inner edge 13 of the upper shoe body l12 is
tion, but other objects and advantages will be referred to
formed with a series of holes through which the pegs 28
in or else Will become apparent from that which follows.
The invention will appear more clearly from the fol 55 extend, the pegs being anchored in the outsole 16. Thus,
lowing detailed description when taken in connection with
the accompanying drawings, showing by way of example
with such construction the upper shoe 12, the support
sole 14 and the outsole 16 are all held together with a
single gluing and pressing operation with the pegs extend
a preferred embodiment oi' the inventive idea wherein like
ing through the holes of the upper, the insole 14 and outer
numerals refer to like parts throughout.
60 sole 16.
In the drawings forming part of this application:
In the construction set forth in the drawings, I have
FIGURE l is a longitudinal elevational view, partially
shown my invention as embodied permanently in a shoe;
in section, through a shoe illustrating an embodiment of
but it is, of course, entirely possible to make my new
my invention;
support sole 14 separate and distinct from the shoe. In
FIGURE 2 is a view taken substantially on the line 65 this form my sole can be inserted into a shoe on top of a
2_2 of FIGURE l;
FIGURE 3 is a longitudinal sectional view of the sup
port insole removed from the shoe;
conventional insole and worn and' subsequently removed.
By providing a graduated degree of flexibility in my sole
according to the flow of weight from heel to toe, a less
fatiguing and longer wearing shoe and/or sole is attained
70 and improved foot comfort is possible.
4-4 of FIGURE l;
lt is also possible to vary the degree of ñexibility
FIGURE 5 is a vertical section view taken on the line
according
to individual needs. For example, the toe por
5-5 of FIGURE 1; and
FIGURE 4 is a vertical section view taken on the line
"
3,077,886
3
tion between point 22 and point B--B may be made
slightly flexible rather than totally inñexible, varying de
grces of stiiîness may be imparted to the other areas of
inner support sole 14 in line with `the particular demands
of the user. A conventional insole may be positioned be
tween the support sole 14 and the outer sole 16.
The invention is not to be understood as restricted to
4
relatively total ñexibility in the area immediately adjacent
the said area of total inñexibility and extending therefrom
toward the heel to a positionsin substantially lateral reg~
ister with area supporting the ball of the foot, said insole
exhibiting flexibility of a degree of flexibility intermediate
said total inilexibility and said total iiexibility in the area
adjacent said area or" intlexibility and extending therefrom
the details set forth since these may be modified within
towards the heel of said shoe, said insole exhibiting rela
the scope of the appended claims without departing from
tively total inflexibility in the area of said shoe supporting
the spirit and scope of the invention.
10 the heel of the foot, said last mentioned area of total
Having thus described the invention, what I claim as
new and desire to secure by Letters Patent is:
l. In a shoe, an outer sole, an upper body, a one-piece
insole extending from the toe to the heel of said shoe,
said insole being generally uniform in thickness and hav
ing a foot supporting upper surface parallel to the other
sole of said shoe, the outer sole of said shoe having a
plurality of peg receiving apertures arranged in a closely
spaced manner throughout the length and width thereof,
infiexibility being in communication with said area of
intermediate flexibility.
2. The shoe construction described in claim l wherein
an inñexible arch side wall is formed integral with said
insole.
References Cited in the file of this patent
UNITED STATES PATENTS
a plurality of pegs formed integral with said insole and
D, 139,580
1,775,957
1,934,591
its degree of flexibility fiom its toe end to its heel end
1,976,389
whereby to lessen the fatigue of the wearer and increase
2,427,986
the life of said shoe without the addition of ñller material 25 2,441,891
2,710,462
between said insole and said outer sole, said insole being
2,917,844
made of a sheet of uniform thickness plastic material
extending therefrom in locking communication with the
apertures in said outer sole, said insole being graduated in
formed so as to exhibit total inflexibility in the area adja
cent the heel and toe of said shoe, said insole exhibiting
Diamant ______________ _.. Nov. 28, 1944
Hassink ______________ -_ Sept. 16, 1930
Churchill _____________ -_ Nov. 7, 1933
Everston ______________ _- Oct. 9, 1934
Whitman ............ __ Sept. 23, 1947
Lucey _______________ -_ May 18, 1948
Swadburgh ___________ -__ June 14, 1955
Scholl _______________ __ Dec. 22, 1959
FOREIGN PATENTS
835,859
Germany ______________ -_ Apr. 7, 1952
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