U.S. patent number 3,686,779 [Application Number 05/100,235] was granted by the patent office on 1972-08-29 for footwear.
Invention is credited to Maxwell Sachs.
United States Patent |
3,686,779 |
Sachs |
August 29, 1972 |
FOOTWEAR
Abstract
Footwear is disclosed with parts for attaching upper sections,
heels, and layers of material to the sole and for making them
detachable.
Inventors: |
Sachs; Maxwell (Chestnut Hill,
MA) |
Family
ID: |
22278750 |
Appl.
No.: |
05/100,235 |
Filed: |
December 21, 1970 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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813140 |
Apr 3, 1969 |
3548521 |
|
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Current U.S.
Class: |
36/101;
36/58.5 |
Current CPC
Class: |
A43B
3/24 (20130101) |
Current International
Class: |
A43B
3/00 (20060101); A43B 3/24 (20060101); A43b
023/28 () |
Field of
Search: |
;36/2.5R,2.5W,44,58.5,42,76R |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Lawson; Patrick D.
Parent Case Text
The present application is a continuation-in-part of my co-pending
application Ser. No. 813,140, filed Apr. 3, 1969 now U.S. Pat. No.
3,548,521.
Claims
I claim:
1. In an article of footwear, a sole having heel, shank, ball and
toe sections, and a layer of material extending over the insole
area of said sole from a position forwardly of the junction between
the shank and ball sections to a position rearwardly of said
junction and being attached to said sole at each of said positions,
said layer being detachable from said sole at said rearward
position of attachment, the attaching parts for said rearward
detachable attachment including a socket depressed in said sole and
having a slot in its top surface, said slot having an open end and
a closed end, and an attaching part attached to material connected
to said layer, said part being detachably attached to said socket,
a resilient section yieldably resisting the removal of said
attaching part from said socket, the upper area of said attaching
part having a top surface resting against the underside of said
material connected to said layer, said upper area being without any
flange which extends below the underside of said material connected
to said layer, said attaching part having a shaft extending
downward from said top surface, a flange extending out from the
lower part of said shaft, said flange extending under the top of
said socket on each side of said slot.
2. The article of claim 1 and a flange extending out from said
upper area and positioned in the material of said layer with no
part of said flange being lower than the bottom material of said
layer.
3. The article of claim 1 in which said layer includes an elastic
section between said positions of attachment and is shorter between
said positions than the underlying portion of said sole.
4. The article of claim 1 in which the core of said shaft has a
hollow area which is open at the bottom of said shaft and which
extends up to the underpart of said top surface, said top surface
having a hole in its central area, a connecting part passing up
through said hole and attaching part to material connected with
said layer.
5. The article of claim 3 in which said attaching connection
passing up thru said hole is attached to a portion of stiff
material resting against said material connected to said layer.
6. The article of claim 5 in which said material connected to said
layer is positioned between said top surface of said attaching part
and said stiff material.
7. The article of claim 1 in which said vertical shaft is round and
has a uniform diameter between said underside of said material
connected to said layer and the top of said flange which extends
out from said lower part of said shaft, said top of said flange
extending out at right angles to said shaft.
8. The article of claim 1 in which a part connected to said top
surface of said attaching part is attached to a portion of stiff
material resting against said material connected to said layer.
9. The article of claim 8 in which the material connected to said
layer is between said top surface of said attaching part and said
stiff material.
10. In an article of footwear, a sole including heel, shank, and
toe areas, a section including a sole portion with upper portion
attached thereto, said sole portion being detachably attached to
said sole in at least one of said areas, the attaching parts for
said detachable attachment including a socket depressed in said
sole and having a slot in its top surface, said slot having an open
end and a closed end, both of said ends being located in said area
of attachment, and an attaching part detachably attached to said
socket and attached to material of said sole portion, the upper
area of said attaching part having a top surface resting against
the underside of said material of said sole portion, said part
having a shaft extending downward from said top surface, a flange
extending out from the lower part of said shaft, said flange
extending under the top of said socket on each side of said slot,
said upper area of said attaching part being without any flange
which extends below the bottom of said sole portion.
11. The article of claim 10 in which the core of said shaft section
of said attaching part has a hollow area which is open at the
bottom of said part and which extends upward inside said attaching
part, said top surface of said attaching part having a hole in its
central area, and an attaching connection having one end in said
hollow core and having a shaft passing up through said hole and
attaching said attaching part to said material of said sole
portion.
12. The article of claim 10 in which an attaching connection with a
smaller diameter than said top surface of said attaching part
extends up from the central area of said top surface and attaches
said attaching part to said material of said sole portion, said
material of said sole portion having a hole through which said
attaching connection passes.
13. The article of claim 12 in which a piece of stiff material is
positioned above said material of said sole portion, said stiff
material having a hole, said attaching part passing up through said
hole and attaching said stiff material together with said material
of said sole portion to said attaching part.
14. The article of claim 10 in which said material of said sole
portion is stiff material.
15. The article of claim 10 in which said top surface of said
attaching part is positioned at a level higher than the level of
the bottom surface of the bottom layer of material of said sole
portion.
16. In an article of footwear, a sole including heel, shank, ball
and toe areas, a section including a sole portion with upper
portion attached thereto, said sole portion being detachably
attached to said sole in at least one of said areas, the attaching
parts for said detachable attachment including a socket depressed
in said sole and having a slot in its top surface, said slot having
an open end and a closed end, a flat spring extending from a
position on the area of said sole between the sides of said socket
to a position outside the open end of said socket, said spring
extending upward to a gradually higher position as it extends from
said open end of said socket in a direction away from said open
end.
17. The article of claim 16 in which said spring is attached to
said socket at said closed end.
18. In an article of footwear, a sole including heel, shank, and
toe areas, a section including a sole portion with upper portion
attached thereto, said sole portion being detachably attached to
said sole in at least one of said areas, the attaching parts for
said detachable attachment including contact-locking material
detachably connecting said sole portion and a portion of said sole,
one of said portions having an aperture, and a stiff part connected
to the other of said portions and projecting into said
aperture.
19. The article of claim 18 in which said contact-locking material
includes complementary sections connected with said sole and said
sole portion and being detachable from and detachably re-attachable
to each other.
20. The article of claim 18 in which said stiff part is connected
to said sole portion and extends into an aperture in said sole.
21. The article of claim 19 in which said stiff part is connected
to said sole portion and extends into an aperture in said sole.
22. In an article of footwear, a sole including heel, shank, and
toe areas, a section including a sole portion with upper portion
attached thereto, said section resting on said sole in at least one
of said areas, said sole portion having at least two apertures with
material between them, a layer of flexible material extending over
said apertures and over said material between said apertures,
contact-locking material detachably attaching said flexible
material to said sole under said apertures.
23. The article of claim 22 in which said material of said sole
portion which extends between said apertures is stiff.
24. The article of claim 22 in which said contact-locking material
includes complementary sections attached to said flexible layer and
to said sole and detachably attached to each other.
25. The article of claim 22 and a stiff part extending between said
sole portion and a portion of said sole, said stiff part being
connected to one of said portions and extending into an aperture in
the other of said portions.
26. The article of claim 24 and a stiff part extending between said
sole portion and a portion of said sole, said stiff part being
connected to one of said portions and extending into an aperture in
the other of said portions.
27. The article of claim 25 in which said stiff part is connected
to said sole portion and extends into an aperture in said sole.
28. The article of claim 26 in which said stiff part is connected
to said sole portion and extends into an aperture in said sole.
29. The article of claim 25 in which said stiff part is connected
to said flexible layer and passes through a hole in said sole
portion and into said sole.
30. The article of claim 26 in which said stiff part is connected
to said flexible layer and passes through a hole in said sole
portion and into said sole.
31. In an article of footwear, a sole including heel, shank, and
toe areas, a section including a sole portion with upper portion
attached thereto, contact-locking material detachably connecting
said sole portion and a portion of said sole in at least one of
said areas, and a part connected to one of said portions extending
in the direction of the other of said portions and into a part
connected to said other of said portions, said parts in combination
opposing sliding of said sole portion relatively to said sole.
32. In an article of footwear, a sole having heel, shank, ball and
toe sections, and a layer of material extending over the insole
area of said sole from a position forwardly of the junction between
the shank and the ball sections to a position rearwardly of said
junction and being attached to said sole at each of said positions,
said layer including elastic material between said positions, said
layer being detachable from said sole at said rearward position of
attachment, the attaching means for said rearward detachable
attachment including a section of contact-locking material and a
stiff part attached to said layer of material and extending
downward therefrom, said sole having an aperture and said stiff
part extending into said aperture.
33. The article of claim 26 in which the contact-locking material
includes complementary sections attached to said layer and to said
sole, said complementary sections being detachably attached to each
other.
34. In an article of footwear, a sole including heel, shank and toe
areas, a section including an upper portion with sole portion
attached thereto, said sole portion being detachably attached to
said sole in at least one of said areas, said sole portion having
an aperture, a part attached to said sole and having a portion
extending up through said aperture, said part including a portion
extending horizontally over a part of said sole portion adjacent to
said aperture and holding said sole portion down on said sole, said
horizontal part being movable to a position over said aperture.
35. In an article of footwear a sole layer including heel, shank,
and toe sections, a heel area section including a heel and material
forming a horizontal slot positioned on and joined to the top of
said heel, said slot opening forwardly and being formed by material
above, below, on each side, and to the rear, said heel area section
forming a single unit, said heel section of said sole layer being
positioned in said slot, and an attachment maintaining said heel
section in said slot.
36. The article of claim 35 in which said heel section of said sole
layer is detachable from said heel area section and able to slide
into and out of said slot when not attached.
37. The article of claim 35 and a section of upper joined to said
heel area section to form a single unit with said heel area
section.
38. The article of claim 36 and a section of upper joined to said
heel area section to form a single unit attachable to and
detachable from said sole layer as a single unit.
39. In an article of footwear a sole layer including heel, shank,
and ball sections, a heel area section including an upper portion
with a sole portion attached thereto, a lower layer spaced from
said sole portion, material connecting said sole portion and said
lower layer at the sides and rear, said connecting material
together with said sole portion and said lower layer forming a
slot, said heel section of said sole layer being positioned in said
slot, and a part maintaining said heel section of said sole layer
in said slot.
40. The article of claim 39 in which said heel section of said sole
layer is detachable from said heel area section and able to slide
into and out of said slot when not attached.
41. In an article of footwear, a sole layer with upper attached
thereto forwardly of the heel area, a heel area section including
an upper portion with a sole portion attached thereto, said sole
portion resting on the heel section of said sole layer and being
detachably attached thereto, material extending from the sides of
said sole portion down the outside of each side of said heel
section of said sole layer and under said heel section of said sole
layer on each side.
42. The article of claim 1 in which said upper area of said
attaching part is without any top flange.
43. The article of claim 10 in which said upper area of said
attaching part is without any top flange.
44. The article of claim 10 in which said sole portion includes a
stiff layer, said attaching part being attached to said stiff
layer.
45. In an article of footwear, a sole including heel, shank, and
toe areas, a section including a sole portion with upper portion
attached thereto, said section resting on said sole in at least one
of said areas, said sole portion having at least two apertures with
material extending between them, a layer of flexible material
extending over said apertures and over said material between said
apertures, attaching parts detachably attaching said flexible
material to said sole under said apertures, said flexible material
having unattached material extending beyond at least one of said
apertures.
46. The article of claim 45 and said flexible material having
unattached material extending beyond at least one of said
apertures.
47. The article of claim 22 and said flexible material having
unattached material extending beyond at least one of said
apertures.
48. In an article of footwear, a sole layer with upper attached
thereto forwardly of the heel areas, a heel area section including
an upper portion with a sole portion attached thereto, said sole
portion resting on the heel section of said sole layer, material
extending from said heel area section down the outside edge of said
sole layer and under said sole layer, said material helping to
maintain the position of said heel area section relative to said
sole layer, said heel area section being attached to said sole
layer.
Description
My invention pertains to footwear and to parts thereof, including
sole, heel, and upper sections, nd means for imparting variability
so as to afford improvement in fit and appearance as well as to
provide convenience and adaptability in use.
Application Ser. No. 813,140 was based on the following earlier
applications: Ser. No. 717,064, filed Mar. 11, 1968; Ser. Nos.
758,179 and 758,178, filed Aug. 12, 1968; Ser. No. 618,683, filed
Feb. 27, 1967; Ser. Nos. 601,215, 601,216, 601,217, and 600,872,
filed Dec. 12, 1966; Ser. Nos. 562,051, 562,056, and 562,053, filed
June 13, 1966; Ser. No. 417,686, filed Dec. 11, 1964; Ser. No.
414,159, filed Nov. 27, 1964; Ser. No. 284,288, filed May 5, 1963;
Ser. No. 306,418 and No. 306,416, filed Aug. 30, 1963; Ser. No.
129,891, filed Aug. 7, 1961; Ser. No. 137,945, filed Sept. 18,
1961; Ser. No. 37,907, filed June 22, 1960; Ser. No. 755,156, filed
Aug. 15, 1958; and Ser. No. 679,887, filed Aug. 23, 1957.
In accordance with the invention, the general objectives are
obtained by providing an article of footwear in which upper
sections and heels are detachably attached to sole sections and
means are employed to maintain said parts in desired attached
positions and to release them from said positions as desired
Slidable attachments, resilient sections and movable sections as
well as other features are employed.
The features of my invention apply socket. footwear of every kind.
Details, such as the construction of the sole, can vary. For
instance, a sole may have a single layer in some footwear while in
other footwear a sole may consist of an outersole, innersole, shank
tuck, and heel tuck all cemented together. My invention applies to
all types.
In the drawings:
FIG. 1 is an isometric view of a shoe in accordance with the
invention;
FIG. 2 is a top plan view of the shoe of FIG. 1 with the heel area
section of upper removed and the layer of material detached at the
rear;
FIG. 3 is a section taken approximately along the line 3--3 of FIG.
2;
FIG. 4 is a side view of a detachable heel area section similar to
that of FIG. 1;
FIG. 5 is a bottom view of the heel area section of FIG. 4 with the
attaching layer removed;
FIG. 6 is a bottom view of the attaching layer of FIG. 4;
FIG. 7 is a section along the line 7--7 of FIG. 4;
FIG. 8 is an enlarged side view of the attaching part shown in FIG.
7;
FIG. 9 is a section showing an attaching part in accordance with
the invention with a top flange positioned in an aperture in the
bottom layer and connected to a piece of stiff material;
FIG. 10 is a section showing an attaching part in accordance with
the invention connected to a stiff tuck at an upper level;
FIG. 11 is a top plan view of the toe area of a sole similar to
that of the shoe of FIG. 2 showing a socket depressed in the sole
and with the detachable toe upper section removed;
FIG. 12 is an isometric view of a detachable toe section similar to
that removed from the toe area of FIG. 11;
FIG. 13 is a sectioned side view showing a flat spring connected
with a socket, similar to that of FIG. 11, depressed in the sole,
in accordance with the invention;
FIG. 14 is an isometric enlarged view of the flat spring of FIG.
13;
FIG. 15 is a side view of a spring similar to the spring of FIG. 14
but with a curve in its rising section;
FIG.16 is a top plan view of a section of sole showing a section of
upper with a sole portion attached to the sole in the shank area
with attaching parts in accordance with the invention;
FIG. 17 is a top plan view of a shoe showing a sole layer with an
elastic section with a detachable rear part in accordance with the
invention;
FIG. 18 is a section along the line 18--18 of FIG. 17;
FIG. 19 is a top plan view of a toe area of the sole with upper
section removed and with contact-locking material in accordance
with the invention;
FIG. 20 is an isometric view of a detachable toe section similar to
that removed from FIG. 19;
FIG. 21 is a side view enlarged of a section of flexible material
with contact-locking material for use with the toe sections of
FIGS. 19 and 20;
FIG. 22 is a top plan view of a toe area of a sole in accordance
with the invention with contact-locking material and with
apertures;
FIG. 23 is an isometric view of a detachable toe section for
attachment to the toe area of FIG. 22;
FIG. 24 is an enlarged section along the line 24--24 of FIG.
23;
FIG. 25 is an enlarged side view of a flexible layer with
contact-locking material for use with the toe toe sections of FIGS.
22 and 23;
FIG. 26 is an isometric view of a detachable toe section similar to
that of FIG. 23 with a flexible layer connected to it;
FIG. 27 is a top plan view of a shank section of upper with a sole
portion detachably attached to the shank area of the sole in
accordance with the invention;
FIG. 28 is an enlarged section of the flexible layer of FIG.
27;
FIGS. 29 and 30 are top plan views of detachable shank sections
similar to that of FIG. 27 with alternative arrangements of
attaching parts;
FIG. 31 is a top plan view of the rearward part of a sole with
contact-locking material and apertures in accord with the
invention;
FIG. 32 is a top plan view of the sole of FIG. 31 with a detachable
heel area section of upper with sole portion attached with a
flexible strip in accordance with the invention;
FIG. 33 is a side view enlarged of the flexible strip of FIG.
32;
FIG. 34 is a top plan view of the detachable heel area section of
upper with sole portion of FIG. 33;
FIG. 35 is a top plan view of a shoe with a layer of material with
rear part detachable in accordance with the invention;
FIG. 36 is a top plan view of a shoe with a detachable heel area
section with locking parts in accordance with the invention;
FIG. 37 is a section along the line 37--37 of FIG. 36;
FIG. 38 is a top plan view of the heel area of the sole of FIG. 36
with detachable heel area section removed;
FIG. 39 is a top plan view of the detachable heel area section of
FIG. 36 removed from the shoe;
FIG. 40 is an enlarged isometric view of one of the locking parts
shown in FIG. 38;
FIG. 41 is an enlarged section of the locking part of FIG. 40
detachably attached to the sole;
FIGS. 42 and 43 are enlarged isometric views of attaching parts
similar to that detachably attaching the locking part to the sole
in FIG. 41;
FIG. 44 is a top plan view of a toe section with parts for
detachably attaching a sole area upper section with sole portion to
the sole similarly to the attaching parts of FIG. 38;
FIG. 45 is an isometric view of a detachable toe section for
attachment to a toe area similar to that of FIG. 44;
FIG. 46 is a top plan view of a rear sole area showing a detachable
shank section of upper positioned on the sole with attaching parts
similar to that shown in FIGS. 44 and 45;
FIG. 47 is a top plan view of the detachable shank area section of
upper with sole portion attached thereto of FIG. 46 removed from
the sole;
FIG. 48 is a top plan view of the rear area of a sole;
FIG. 49 is a top plan view of a detachable heel area section for
attachment to the sole of FIG. 48 in accordance with the
invention.
FIG. 50 is a side view of the heel area section of FIG. 49
indicating a slot in accordance with the invention;
FIG. 51 is a side view partially sectioned of a heel area section
similar to FIG. 50 partially sectioned to show the rear of the
innersole inserted in the slot.
The shoe illustrated by FIG. 1 includes a generally indicated
detachable heel area section 20, a generally indicated detachable
toe section 21, and a generally indicated layer of material 22
including elastic material 23 detachable at the rear and bridging
an area of the sole forwardly and rearwardly of the juncture 24
between the ball and the shank as indicated by the dotted line 25,
thus causing the shoe to flex and assisting in keeping heel area
section 20 in place on the sole.
FIG. 2 shows the shoe of FIG. 1 with the heel area section 20 of
FIG. 1 removed from attachment to the sockets 26 and 27 which are
depressed in the sole, and with the generally indicated layer of
material 22 detached from the socket 29. At 30 is shown a ribbon
attached to the layer 22 at 31 and resting against the underside of
heel section 32 of layer 22, with an attaching part 33 attached to
the ribbon 30 and to a piece of stiff material 34 positioned in an
aperture 35 in the under layer 36 of heel section 32. The heel
section 32 can be lifted away from the ribbon 30 while the ribbon
30 is being attached to or detached from the socket 29.
FIG. 3 shows an enlarged section along the line 3--3 of FIG. 2 with
the attaching part 33 attached to the ribbon 30 and the stiff
material 34 by connecting part 37 which passes up through a hole in
the top surface 38 of the attaching part 33 and through a hole in
the ribbon 30 and the stiff material 34 with wider portions 39 and
40 at each end of the connecting part 37. The attaching part 33 is
shown as having a hollow core 41 and a flange 42 projecting out to
each side in its lower portion, and to have no flange projecting
out from its top surface 38 which rests against the ribbon 30, thus
eliminating the catching on the edge 43 of the open end of socket
29 which would be caused by a top flange on attaching the ribbon to
the socket. The absence of a top flange sitting on top of the
socket also reduces the upward projection of the ribbon. The piece
of stiff material 34 which rests in the aperture 35 helps to
prevent the ribbon from being cut by the wider top 39 of the
connecting part 37 and also acts as a buffer against sharp bending
of the top 39 as a result of the angle of pull on the ribbon as the
shoe is flexed and unflexed in walking. The sockets 26, 27, and 29,
all depressed in the sole, are shown to have slots 44, 45, and 46
respectively in their top surfaces, with slot 46 opening toward the
rear of the sole and slots 26 and 27 opening forwardly, and with
their respective closed ends 47, 48, and 49 being at the other end
of each socket.
FIG. 4 shows a side view of the heel area section 20 removed from
the shoe. The attaching part 50 is shown to be attached to the
bottom layer 51 of the generally indicated sole portion 52, and to
have no flange where the top surface of its shank contacts the
bottom surface of the bottom layer 51 of the sole portion 52
attached to the generally indicated upper portion 53. The bottom
layer 51 and a top layer 54 are shown to extend forward, with the
bottom layer having an attaching part 55 attached to it and
extending downward from its underside. The heel area section fits
snugly to the sole in the heel area. For that reason it is highly
desirable for the attaching part 50 to have no flange projecting
below the sole portion 52 to catch at the edge of the opening of
slot 47 of socket 26, and it is highly desirable to avoid having a
flange which would lift the central part of the sole portion 52
higher above the socket relative to the sides of sole portion 52
and result in a tendency of the heel area section 20 to rock a bit.
The forward attaching part 55 does not preset the same problem. The
layer can be lifted a bit. The lower part of the fastening part can
consequently be made long enough to rest on the innersole and keep
the flange high enough so that it does not catch on the edge of the
top of the socket as it enters the slot. This permits alternatives
in design of the attaching part in the forward area. The flange top
of the attaching part 55 is here shown positioned in an aperture 56
in bottom layer 52 and attached to stiff material 57.
FIGS. 5 and 6 will be discussed after FIG. 7.
FIG. 7 shows an enlarged section along the line 7--7 of FIG. 4. The
attaching part 50 is shown to have a bottom flange 58 projecting
out at right angles to vertical round straight smooth-surfaced
shank 59, a flangeless top 60, and a hollow core 61. The shank of
the connecting part 62 is shown to pass up through a hole in the
center of the top 60 of the attaching part 50, and through a hole
in the bottom layer 51 and a hole in a section of stiff material
63. The connecting part 62 is shown to be wider at each end, one
end being at the top of the hollow core 61 of the attaching part 50
and pressing against the under surface of the top 60 of the
attaching part 50, and the other end being indented into stiff
material 63. At 64 is a layer of stiff material and at 65 a
covering layer of material.
FIG. 5 is a bottom view of the generally indicated sole layer 52 of
FIG. 4 with the bottom layer 51 removed. At 66 is shown the lasting
allowance for the upper 53 of FIG. 4. At 67 is shown a hole in the
stiff tuck 68 for the passage of the attaching part 33 of FIG. 2 to
be attached to the socket 29.
FIG. 6 is a bottom view of the bottom layer 51 of FIG. 4, with the
hole 69 corresponding to the hole 67 of FIG. 5, and the attaching
parts 50 and 55 of FIG. 4, with dotted lines 70 and 71 indicating
pieces of stiff material to which the attaching parts 50 and 55 are
attached.
FIG. 8 is a side view enlarged of the attaching part 50 shown in
FIG. 7. The attaching part 50 is shown to have no top flange and
can be used in place of the attaching part 33 of FIG. 3, and in the
place of the attaching part 55 of FIG. 6, as well as for the use
shown as the attaching part 50 of FIG. 4.
FIG. 9 shows a section enlarged along the line 9--9 of FIG. 4,
showing the top flange 72 of attaching part 55 raised into an
aperture in bottom layer 51 so that no part of the top flange 72
projects below layer 51. Connecting part 73 is shown fastening
attaching part 55 to stiff material 74.
FIG. 10 is a sectional view of a variation in the attachment of an
attaching part in the position of attaching part 50 of FIG. 4. The
top 75 of attaching part 76 is shown raised up to the bottom of the
stiff tuck 77 corresponding to the tuck 68 of FIG. 5 and fastened
to tuck 77 by connecting part 78.
FIG. 11 shows a toe section generally indicated at 79 with a socket
depressed in it for attachment of toe area section of upper with
sole portion attached thereto such as shown in FIG. 12 with a
fastening part 80 attached to the sole portion 81. Fastening part
80 can be similar to attaching part 50 of FIGS. 4 and 8, or to 55
of FIG. 9, with similar attachments.
FIG. 13 is a section showing a flat spring 81 attached to the rear
end 82 of socket 83 depressed in sole section 84 and rising higher
as it leaves the opening end 85 of the socket and moves into the
depressed area in front of the socket, thus affording resiliently
yielding resistance to the removal of an attaching part from the
socket.
FIG. 14 is an enlarged isometric view of the spring of FIG. 13, and
FIG. 15 is a side view of a similar spring with a particular kind
of curve.
FIG. 16 shows a shank and heel area part of a sole 86 with a shank
area section including upper portions 87 and 88 attached to sole
portion 89 which is detachably connected to sockets 90 and 91 by
fastening parts 92 and 93 which are similar to part 50 of FIGS. 4
and 8 or part 55 of FIG. 9.
FIG. 17 shows a shoe with a generally indicated layer of material
94 attached forwardly to the generally indicated sole 95 in the
heel area of which socket 96 is depressed. Layer 94 includes an
elastic section. An attaching part 97 is attached to the heel
section 98 of layer 94 in the manner shown in FIG. 18.
FIG. 18 is an enlarged section along the line 18--18 of FIG. 17.
Connecting part 98 attaches fastening part 99 to heel section 98 in
a manner similar to those previously described herein. Both of said
parts are similar to fastening parts previously described herein.
Flexible material 100 helps to reinforce the attachment of the
stiff material 101 to the heel section 98.
FIG. 19 shows a generally indicated toe section 102 of a sole with
a socket 103 depressed therein, and with sections 104 and 105 of
contact-locking material attached to the sole.
FIG. 20 shows a generally indicated toe area section 106 including
upper 107 with a sole portion 108 attached thereto. At 109 and 110
are holes with stiff material 111 between them. Dotted circle 112
indicates an attaching part attached to sole portion 108 and
extending down from it.
FIG. 21 shows a flexible layer 113 with contact-locking material
114 and 115, designed to pass through holes 109 and 110 of FIG. 20
for locking with materials 104 and 105 of FIG. 19 when the toe area
section 106 is positioned on toe section 102 with the attaching
part 112 in the socket 103 and the flexible layer 113 is positioned
over the holes 109 and 110. The contactlocking material, holding
down stiff material 111 opposes movement of sole portion 108 which
would move attaching part 112 out of socket 103.
FIGS. 22, 23, 24, 25, and 26 are best discussed together. FIG. 22
shows a generally indicated toe section 116 with contact-locking
material 117 and 118 and holes 119 and 120. FIG. 23 shows a
generally indicated toe area section 121 with sole portion 122
attached. FIG. 24 is an enlarged section along the line 24--24 of
FIG. 23, showing the stiff parts 125 and 126 passing through holes
120 and 130 of stiff material 128 and held in that position by
material 127. FIG. 25 shows a layer of flexible material with
contact-locking material 132 and 133. When toe area section 121 is
attached to toe section 116, the stiff parts 125 and 126 will enter
holes 119 and 120 and guide the positioning when attaching and will
prevent the slipping which may occur with contact-locking material,
particularly of the loop-and-hook variety; the contact-locking
material 132 and 133 will pass through holes 123 and 124 to attach
detachably to contact-locking material 117 and 118 and hold down
stiff material 128, thus detachably attaching toe area section 23
to toe section 22. FIG. 26 shows the toe section 121 with the
flexible layer positioned over the holes and the stiff parts
attached to the flexible layer passing through holes 129 and 130.
Holes 134 and 135 are for use with a button-hook type of implement
when lifting flexible material 131 when detaching the toe area
section from the toe section. The flexible material, permitting
gradual lifting at an angle, enables the contact-locking material
to be separated from its locking position far more readily than if
it were attached to the stiff material of the toe area section. In
the latter case the pull could cause bending and damage to the toe
area section. This type of use of flexible material is also
advantageous with other types of fastening parts for similar
detachable attachment.
FIGS. 27, 28, 29, and 30 illustrate the construction of FIGS. 22
through 26 as applied to the detachable attachment of a shank area
secton to the shank area of a sole. In FIG. 30 the stiff guide
parts are shown attached to the flexible layer.
FIGS. 31, 32, 33, and 34 illustrate the detachable attaching
techniques of FIGS. 22 through 30 as applied to a detachable heel
area section. In each of these cases the flexible layer with
contact-locking material can have one of its ends attached to the
sole portion.
FIGS. 36 through 47 can best be discussed together. FIG. 36 shows a
shoe with a detachable heel area section detachably attached
thereto and generally indicated at 136 with upper section 137 with
sole portion 138 attached thereto and a covering layer 139 attached
to the sole at 140 forwardly of the sole portion 138. FIG. 37 is a
section along the line 37--37 of FIG. 36 with the covering layer
turned down in covering position. FIG. 38 shows the heel area of
the sole with the heel area section 136 removed. FIG. 39 shows the
heel area section 39 when detached from the sole. Attaching parts
141 through 144 are illustrated in enlarged form by generally
indicated part 145 in FIG. 40. FIGS. 42 and 43 illustrate in
enlarged form generally indicated sockets 146 and 147 for imbedding
in the sole to attach detachably the attaching part 145. The
channel 148 in FIG. 42 allows the locking nib 150 to turn 180
degrees, and the channel when the part 145 is positioned in the
socket 146, and channel 149 in FIG. 43 allows the locking nib 150
to turn 90 degrees. FIG. 41 is an enlarged section showing a socket
151 similar to sockets 146 and 147 imbedded in a sole with the
flange 152 locked between two sole layers. A attaching part 153 is
shown positioned in the socket. Part 153 is similar to part 145
except that it has a T-shaped top 154 instead of an L-shaped top as
shown in FIG. 40 at 155. The locking parts can be merely turned to
lock or can be removed from the sockets entirely. The nib 156 in
FIG. 42 and the nib 157 in FIG. 43 are to prevent the socket from
turning, by positioning the nib in a channel. In FIG. 36 the
attaching parts are shown in locked position holding down the sole
portion 138. The blocks 156 and 157 in FIGS. 36 and 37 are for
positioning in holes 158 and 159 respectively in the sole portion
138 to prevent the attaching parts 144 and 142 from turning from
their locked position to a position over the holes 158 and 159. The
contact-locking material at 158 and 159 will detachably lock to
each other when the heel area section 136 is in position on the
innersole heel area and the covering part is turned down. In
combination with the other sections of contact-locking material,
this will keep the covering part down on the sole portion. FIGS. 44
and 45 illustrate the same detachable attaching technique for toe
area sections, ad FIGS. 46 and 47 illustrate it for shank area
sections.
FIGS. 48 through 51 can best be discussed together. FIG. 48 shows a
generally indicated rear sole layer section 160 with a covering
piece 170 tuned back. FIG. 49 shows a top plan view of a generally
indicated heel area section 161. FIG. 50 shows a side view of heel
area section 161 with dotted lines 162 indicating a slot for
entrance of the rear of sole section 160 of FIG. 48. FIG. 51 shows
a side view of heel area section 161 partially sectioned to show
the rear part 163 of sole section 160 positioned in the slot 162
with detachable locking part 164 maintaining sole layer section 163
positioned in the slot 162. As is apparent from the drawings the
section 163 is detachable from the slot. At 165 is shown elastic
material in the event that it is desired to curve the sole layer
outward at that point. The elastic material is optional. Normally
the sole layer section inserted in the slot would be an innersole
section. The slot arrangement assures proper positioning,
simplifies attaching procedure and adds security to the attachment
to the innersole, or other sole layer, of heels and upper sections
in combination or separately. It permits a versatile
detachability.
From the foregoing it will be seen that footwear in accordance with
the invention will be improved in variability, functioning,
comfort, and adaptability as well as other features.
* * * * *