U.S. patent number 3,868,783 [Application Number 05/433,148] was granted by the patent office on 1975-03-04 for ski boot.
This patent grant is currently assigned to Norstar Ski Corporation Ltd.. Invention is credited to Domenico Caporicci.
United States Patent |
3,868,783 |
Caporicci |
March 4, 1975 |
SKI BOOT
Abstract
This invention relates to a ski boot which is flexible in the
area adjacent the instep of a wearer of the boot. The boot is made
up in three sections; a back section, a bottom section, and a
tongue section. To make the boot flexible, the mating edges of the
tongue and back sections comprise portions which are U-shaped in
cross section, and the legs of the U-shaped portions are
interjoined. The top leg of the tongue section will comprise a part
of the top surface of the boot. To interconnect the interjoined
legs, a slidable fastener passes through openings in the legs of
the tongue section and the leg of the bottom section which extends
between the legs of the tongue section. The fastener consists of a
cylindrical middle section with flanges at both ends. Each flange
is seated in a recess of a respective tongue section leg. A spiral
spring surrounds the cylinder, and the ends of the spring abut
against protrusions on the opening in the leg of the bottom section
which extends between the legs of the tongue section. When the foot
is pivoted, the U-shaped portions will move relative to one another
against the force of the spring to provide the required
flexibility. When the foot is unpivoted, the spring will urge the
U-shaped portions back into their original positions. The back
section of the boot is made to be pivotable relative to the bottom
section so that the back section will follow the back of the leg
when the front part of the boot flexes. The pivoting action of the
back section is provided by a pivot pin in the heel of the
boot.
Inventors: |
Caporicci; Domenico (Ville St.
Laurent, Quebec, CA) |
Assignee: |
Norstar Ski Corporation Ltd.
(Quebec, CA)
|
Family
ID: |
23719020 |
Appl.
No.: |
05/433,148 |
Filed: |
January 14, 1974 |
Current U.S.
Class: |
36/118.7;
36/118.2 |
Current CPC
Class: |
A43B
5/0445 (20130101) |
Current International
Class: |
A43B
5/04 (20060101); A43b () |
Field of
Search: |
;36/2.5R,2.5AL,50 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Attorney, Agent or Firm: Swabey; Alan Mitchell; Robert
E.
Claims
1. A ski boot comprising;
a bottom section;
a tongue section; and
a back section;
said tongue section comprising a portion which is U-shaped in cross
section, at an edge of said tongue section;
said bottom section comprising a portion which is U-shaped in cross
section, at an edge of said bottom section;
said U-shaped portion of said tongue section being interjoined with
said U-shaped portion of said bottom section at a joint at the
front part of the boot, said U-shaped portions being movable
relative to one another at said joint;
whereby said boot is flexible at said joint;
wherein the legs of the U-shaped portions are inter-connected by a
slidable fastener.
2. A ski boot as defined in claim 1 wherein the back section of the
boot is pivotable relative to the bottom section thereof.
3. A ski boot as defined in claim 2 wherein a top leg of the
U-shaped portion of said tongue section comprises a part of the top
surface of the boot;
one leg of the U-shaped portion of said bottom section extending
between the legs of the U-shaped portion of the tongue section;
said slidable fastener being mounted to slide on a surface of the
other leg of the U-shaped portion of the bottom section.
4. A ski boot as defined in claim 3 wherein said fastener comprises
a base member comprising a generally cylindrical upstanding part
with a cavity in the interior thereof;
a flange member attached at one end of said upstanding cylindrical
part, said flange being seated in a recess in the bottom leg of the
U-shaped portion of the tongue section;
said upstanding cylindrical part passing through openings in both
legs of the U-shaped portion of the tongue section and an opening
in the one leg of the U-shaped portion of the bottom section;
said fastener further comprising a top member having a second
flange member seated in a recess in the top leg of the U-shaped
portion of the tongue section, and a projection extending from said
second flange member and being retainably insertable into said
cavity in said upstanding cylindrical part;
whereby the legs of said U-shaped portions are inter-connected.
5. A ski boot as defined in claim 4 and further comprising a spiral
spring member, having two ends, surrounding said upstanding
cylindrical part;
said two ends of said spring member abutting protrusions in the
opening in said one leg of said U-shaped portion of said bottom
section.
6. A ski boot as defined in claim 2 wherein said bottom section
comprises a heel at the back end thereof;
said heel having semi-circular socket-like openings at the both
sides of the boot;
said back section comprising two mating semi-circular portions
extending into said openings and being in slidable engagement with
said openings;
and a pivoting pin extending through said mating portions and said
heel;
whereby said back section is pivotable relative to said bottom
section about the pivoting pin in said heel.
7. A ski boot as defined in claim 3 wherein said slidable fastener
passes through openings in both legs of the U-shaped portion of the
tongue section and an opening in the one leg of the U-shaped
portion of the bottom section;
said openings comprising at least one circular opening and at least
one elongated opening extending from said circular opening;
said slidable fastener being elongate in cross section, the length
of the fastener being greater than the width of the elongated
opening but less than the diameter of the circular opening, the
width of the fastener being less than the width of the elongated
opening;
whereby, when the fastener extends transversely to the elongated
opening in the circular opening, it will be restrained from
sliding, and, when the fastener extends parallel to the elongated
opening, it will be permitted to slide.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a novel structure for a ski boot. More
specifically, this invention relates to a ski boot which is
flexible in the area adjacent the instep of a wearer.
2. Description of the Prior Art
Although for most downhill skiing, a rigid inflexible boot was
required, with present day approaches to skiing, and especially the
approach where skiers mount a short rise for a jump, a boot which
is flexible in that area of the boot adjacent the instep of a
wearer of the boot, is desirable. To meet this requirement, boots
are supplied which have elastic-like openings at the front of the
boot. When a skier pivots his foot upward to mount the rise, the
front of the boot stretches open so that the required flexiblity is
provided.
However, with this type of boot, the back part of the boot will
move away from the back of the leg when the skier's foot is pivoted
so that a portion of the back of the leg is left unsupported.
Further, the boots have to be adjusted as to the amount of
flexibility available. If it is adjusted too flexible, then the
remainder of the downhill run could be dangerous. If it is adjusted
with little flexibility, then mounting the rises could be
difficult.
STATEMENT OF THE INVENTION
In order to overcome the above, and other, disadvantages, a boot is
provided with a wide range of flexibility in the front part of the
boot adjacent to the instep of the wearer thereof, and the back of
the boot is so constructed that it will follow the back of the leg
when the skier pivots his foot.
In accordance with the invention, a ski boot comprises;
A bottom section;
A tongue section; and
A back section;
SAID TONGUE SECTION COMPRISING A PORTION WHICH IS U-shaped in cross
section, at an edge of said tongue section;
SAID BOTTOM SECTION COMPRISING A PORTION WHICH IS U-shaped in cross
section, at an edge of said bottom section;
said U-shaped portion of said tongue section being interjoined with
said U-shaped portion of said bottom section at a joint at the
front part of the boot, said U-shaped portions being movable
relative to one another at said joint;
whereby said boot is flexible at said joint.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood by an examination of the
following description, together with the accompanying drawings, in
which:
FIG. 1 is a side view of a boot constructed in accordance with the
invention;
FIG. 2 is a side section of the boot to illustrate the various
elements thereof;
FIGS. 3, 3a and 4, 4a, respectively, illustrate two different
embodiments of the slidable insert arrangement of the invention;
and
FIGS. 5 and 6 illustrate the pivoting arrangement at the back of
the boot.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring now to FIG. 1, the boot, indicated generally at 10,
comprises a bottom section 12, a tongue section 14 and a back
section 16. The boot also includes a filling of foam rubber or like
material 18.
The back section is pivoted, at the bottom end thereof, by a pivot
means 20 which will be more fully discussed below. The boot also
includes buckle and strap arrangements 22 and 24 as is well known
in the art. The buckle and strap arrangement 24, when in the
fastened condition, will provide a mechanical connection between
the tongue section 14 and the back section 16.
Preferably the straps 25, which may be made of a flexible material
such as flexible wire, pass through slots 27 in the front of the
tongue section. The provision of slots here will provide added
flexibility to the boots.
The tongue section includes a shock absorber or flexing means 26
which will be more fully discussed below. The tongue section
further includes a recessed portion 28 adjacent the back section,
and the bottom portion also includes a recessed portion 30 adjacent
the back section. When in operation, the back section can slide
into the recessed portions 28 and 30 to thereby follow the leg and
provide full support even when the wearer's foot is pivoted.
Similarly, the bottom section contains a recessed portion 32
adjacent the bottom edge of the tongue section into which the
tongue section can slide when the front part of the boot is
flexed.
Referring now to FIG. 2, the boundary of the tongue section is
shown in light dotted lines, the boundary of the bottom section is
shown in heavy dotted lines, and the boundary of the back section
if shown in dot and dash lines. In addition, the tongue section
contains, at the bottom edge thereof, a U-shaped portion having
legs 14a and 14b. Interjoined with the legs 14a and 14b are legs
12a and 12b of a U-shaped portion of the bottom section. A slidable
insert and spring arrangement 34 interconnects the legs of the
U-shaped portions.
At the back of the boot, overlying portion 16a of back section 16
overlaps underlying portion 12c of bottom section 12. As can be
seen, with this arrangement, when the back section of the boot
moves upwardly, water or snow will not be able to enter into the
boot because of this overlapping of the back and bottom
portions.
One embodiment of the slidable insert arrangement is more fully
shown in FIG. 3 in which FIG. 3a is a section and FIG. 3b is a top
view.
Referring now to FIG. 3, the slidable insert 36 comprises a
fastener having a base or female part 38 and a top or male part 40.
The fastener is arranged so that the top part is held fast in the
base. For example, the top part could be a screw like member, and
the base part would include mating screw threads. The fastener is
preferably generally cylindrical in shape.
The top part 40 has a flange which is seated in recess 42 of leg
14a, and the bottom part has a flange which is seated in recess 44
of leg 14b. The recesses 42 and 44 prevent motion of the fastener
relative to the tongue section when the fastener is tightly
fastened. The stem part of the fastener passes through the opening
46 of leg 12a a of the bottom section. The stem is encircled by a
spring means 52 as seen in both FIGS. 3a and 3b.
Referring now to FIG. 3b, which illustrates one embodiment of the
slidable insert, the opening 46 contains indentations 48 and 50
with spring retaining protrusions 48a and 50a respectively. The
ends 52a and 52b abut with the protrusions 48a and 50a respectively
so that the spring is retained in position by these
protrusions.
FIG. 4 illustrates a second embodiment of the insert. In this
embodiment, it is possible to restrain flexing of the boot is one
position of the insert. The position of restraint is made
adjustable.
In FIG. 4b, the opening 46 comprises a plurality of circular
openings 47a to 47d and a plurality of elongated openings 49a to
49c. The insert 36 is elongated in cross section and contains a
slot 37 in the top surface thereof. When the insert is in the
position shown in solid lines in FIG. 4b, it will not be able to
slide in the opening 46 so that the flexing of the boot is
restrained. When 36 is turned through 90.degree., it will be able
to move in the elongated openings 49 and the boot is flexible. As
can be seen, the position of restraint is adjustable.
It will be appreciated that the diameter of the circular openings
47 will have to be greater than the length of 36, and that the
width of the elongated openings will have to be greater than the
width of 36, while the length of 36 will have to be greater than
the width of the elongated openings.
In FIG. 4a, the relative positions of 47 and 49 are shown.
In operation, the slidable insert works as follows: When the foot
of a boot wearer is unpivoted relative to the leg, the insert will
not move because it is restrained by the action of the protrusions
48a and 50a on the ends 52a and 52b respectively of the spring
member 52. Thus, under these conditions, the boot will remain firm
and supply the support needed in a ski boot.
However, when the foot is pivoted relative to the leg, the bottom
section will tend to move relative to the tongue section and the
force of the foot movement will be transferred to the bottom
section of the boot. It will, of course, be appreciated that, in
order for the relative movement to occur, for force will have to be
great enough to overcome the retaining action of the spring 52.
Specifically, the bottom will tend to move in the direction of the
arrow A in FIG. 3 relative to the tongue section. The opening 46
will move back so that the fastener will occupy the forward part of
the opening 46 as shown in dotted lines in FIG. 4. When the
fastener is in this position, the spring, referenced 52' in the
forward position, will be under tension. Thus, the fastener will
remain in this forward position only so long as the force urging it
in the forward position is great enough to overcome the spring
tension. As soon as the foot is pivoted back to its normal
position, the forward urging force will be removed, and the tension
in the spring will force the fastener back to its original position
as shown in FIG. 3 and in solid lines in FIG. 4. It can thus be
seen that this arrangement permits the boot to be flexible to the
degree required at any moment while still providing firm support
when it is not flexed.
It will also be appreciated that, if the leg is pivoted relative to
the foot, the same flexibility is provided. However, in this case,
it is the tongue which moves relative to the bottom section.
In order to insure that the back section of the boot will provide
support for the back of the leg when the front of the boot is
flexed, the back section is adapted to pivot about the heel as is
shown in FIG. 5. In FIG. 5, the heel 53 comprises a ball and socket
like arrangement with arcuate member 54 in socket 56. A pivoting
pin 20 pivotingly connects the back section 16 to the bottom
section 12 and provides the pivot point. The pin 20, will, of
course, go right through the heel as is shown in FIG. 6. With this
arrangement, the back section can pivot relative to the heel so
that the back section can follow the back of a wearer's leg.
It can also be seen that the back section can pivot in the backward
direction. The boot will be opened in this way when it is to be put
on.
For a full description of the operation of the boot, reference is
had once again to FIG. 1. When the foot of a wearer is pivoted
relative to his leg, as, for example, by lifting the toe in the
upward direction, the boot will flex in the area 26, as was
explained with reference to FIG. 4. When the boot flexes, the
tongue section 14 will move downward, and the front edge of the
tongue section will slide into recess 32 of the bottom section.
Because of the connection between tongue section 14 and back
section 16, through the buckle and strap arrangement 24, the back
section will be drawn forward, and the front edge of the back
section will slide into recesses 28 and 30 of the tongue and bottom
sections respectively. Thus, the back section will follow the back
of the leg and provide support therefore at all times.
When the foot is unpivoted, the front of the boot will unflex as
explained with reference to FIG. 4. The back section will not be
free to move back into its original position, and it will there be
forced due to the back of the leg pushing against it.
Although a preferred embodiment was described, this was for the
purpose of illustrating, but not limiting, the invention. Various
modifications, which will come readily to the mind of one skilled
in the art, are within the scope of the invention as defined in the
appended claims. I claim:
* * * * *