U.S. patent number 3,722,112 [Application Number 05/116,405] was granted by the patent office on 1973-03-27 for ski boot construction.
This patent grant is currently assigned to Riddell, Inc.. Invention is credited to Gerard E. Morgan.
United States Patent |
3,722,112 |
Morgan |
March 27, 1973 |
SKI BOOT CONSTRUCTION
Abstract
A ski boot providing securing means for tightening the boot
around the foot. The securing means includes a band having its ends
secured to boot portions. The ends of the band are threadably
attached so that infinite adjustments are possible to accommodate
different wearers. The band preferably comprises a spring mounted
around a wire or cable whereby a strong, flexible and threadable
member is provided.
Inventors: |
Morgan; Gerard E. (Lake Forest,
IL) |
Assignee: |
Riddell, Inc. (Des Plaines,
IL)
|
Family
ID: |
26814205 |
Appl.
No.: |
05/116,405 |
Filed: |
February 18, 1971 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
|
851936 |
Aug 21, 1969 |
3570148 |
Mar 16, 1971 |
|
|
Current U.S.
Class: |
36/118.8;
36/50.5 |
Current CPC
Class: |
A43B
13/08 (20130101); A43B 5/0435 (20130101) |
Current International
Class: |
A43B
23/00 (20060101); A43B 5/04 (20060101); A43b
000/00 () |
Field of
Search: |
;36/2.5R,2.5AL,50
;24/68,70 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Parent Case Text
This application is a continuation-in-part of application Ser. No.
851,936, filed on Aug. 21, 1969 now U.S. Pat. No. 3,570,148, issued
Mar. 16, 1971.
Claims
That which is claimed is:
1. A ski boot including a sole and heel portion and an upper
portion, said upper portion including a pivotally connected ankle
section, the ski boot body comprising a main body formed of a first
single molded piece, said first molded piece including said sole
and heel portion and part of said upper portion, said ankle section
comprising a second single molded piece completing the upper
portion of the boot, the top area of said main body including
integrally molded flaps adapted to be bent into overlapping
relationship, said ankle section also including integrally molded
flaps adapted to be bent into overlapping relationship, and
including adjustable securing means for the respective flaps, said
securing means comprising a band having its ends attached to one
flap portion with a loop defined by the band extending beyond the
overlapping edge of said one flap portion, holding means attached
to the boot adjacent said overlapping edge, said loop being
engageable by said holding means, said band comprising a threaded
member, means for attaching the ends of the band to said holding
means comprising rotatable nuts receiving the band thereby
permitting movement of the ends of the band relative to said
holding means, said nuts being mounted on a plate which is
pivotally attached to the associated flap, and including a movement
limiting device associated with said upper portion for determining
the extent of allowable pivotal movement of said ankle section, and
means associated with said limiting device for adjusting the
allowable extent of pivotal movement whereby the limiting device
can be set to provide substantial freedom of movement or to
substantially reduce the capacity for movement.
2. A ski boot in accordance with claim 1 wherein said holding means
comprises a lever defining a plurality of teeth, the loop in said
band being first engaged with one of said teeth, said lever then
being pivoted into a locked position, and said ends of the band
then being adjusted to complete the securing operation.
3. In a ski boot having opposed sections which are opened for
insertion of the foot and having securing means for securing said
sections after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band having its
ends attached to one section with a loop defined by the band
extending to the other section, holding means attached to said
other section for engaging said loop, the ends of said bands being
threaded, and wherein the means attaching the ends of said band
comprise rotatable nuts mounted on said one section and receiving
the ends of said band thereby permitting relative movement of the
ends of the band, and including a plate for mounting said nuts,
said plate being pivotally attached to the associated section.
4. A ski boot in accordance with claim 3 wherein said holding means
comprises a lever defining a plurality of teeth, the loop in said
band being first engaged with one of said teeth, said lever then
being pivoted into a locked position, and said ends of the band
being thereafter adjusted to complete the securing operation.
5. In a ski boot having opposed portions which are opened for
insertion of the foot and having securing means for securing said
portions after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band extending
between said portions, holding means attached to each of said
portions with the ends of said band being secured thereto, at least
one of said ends defining a threaded surface and internally
threaded means associated with at least one of said holding means
for receiving aid threaded end whereby the relative positions of
said ends can be adjusted, said internally threaded member
comprising a nut carried by said one end with the position of said
nut on said end being adjustable, one of said holding means
comprising a bifurcated member adapted to releasibly hold said nut,
sand means for drawing said band taut between said holding
means.
6. A ski boot in accordance with claim 5 wherein the other end of
said band opposite said threaded end is releasibly held by a
holding means.
7. A ski boot in accordance with claim 6 including a tongue secured
to said boot, the edges of said opposed sections being located in
spaced apart relationship with said tongue being located between
said portions, said portions overlapping the sides of said tongue
whereby the edges of said portions are drawn closer together when
said band is drawn taut whereby a seal is created between said
portions and said tongue.
8. A ski boot in accordance with claim 7 including an ankle section
having opposed portions defining edged located in spaced-apart
relationship, said tongue extending between said ankle portions,
and wherein additional securing means are attached to said ankle
portions.
9. In a ski boot having opposed portions which are opened for
insertion of the foot and having securing means for securing said
portions after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band extending
between said portions, holding means attached to each of said
portions with the ends of said band being secured thereto, at least
one of said ends defining a threaded surface and internally
threaded means associated with at least one of said holding means
for receiving said threaded end whereby the relative positions of
said ends can be adjusted, said one holding means comprising a
lever member, and an internally threaded member pivotally connected
to said lever member for receiving said threaded end, and means for
drawing said band taut between said holding means.
10. A ski boot in accordance with claim 9 wherein the pivot axis
for said internally threaded member is located at an intermediate
point on said lever arm whereby the pivot axis of said internally
threaded member will change from one side to the other of the axis
of said lever member during pivoting of the lever member.
11. In a ski boot including a sole and heel portion and an upper
portion, said upper portion including a pivotally connected ankle
section, a movement limiting device associated with said upper
portion for determining the extent of allowable pivotal movement of
said ankle section, and means associated with said limiting device
for adjusting the allowable extent of pivotal movement whereby the
limiting device can be set to provide substantial freedom of
movement or to substantially reduce the capacity for movement, said
limiting device comprising a tongue extending downwardly from said
ankle section, a receiving area for said tongue defined by the
adjacent upper portion, said tongue being movable relative to said
receiving area, and adjustable means for limiting the extent of
movement of said tongue relative to the receiving area, the
improvement wherein said limiting device comprises a clip, said
clip having spaced apart arms, a slot defined by said tongue for
receiving at least one of said arms, openings defined by said
receiving area whereby at least one of said arms is adapted to pass
through at least one opening for receipt of said one arm within
said slot whereby movement of the tongue relative to the receiving
area will bring the portions of the slot into engagement with the
arm whereby the arm serves to limit movement of the tongue.
12. A ski boot in accordance with claim 11 wherein both arms of the
clip are simultaneously received within said slot with one of said
arms limiting movement of the tongue in one direction and with the
other arm limiting movement of the tongue in the opposite
direction.
13. A ski boot in accordance with claim 12 wherein one of said arms
is received within said slot with the other arm being located
outside the receiving area whereby only said one arm serves to
limit movement of the tongue.
14. A ski boot in accordance with claim 13 wherein said tongue
defines a wall portion at the bottom end of said slot, one of the
arms of said clip being received in said slot adjacent said wall
portion and the other arm of said clip being located on the
opposite side of said wall portion whereby said wall portion is
confined by the arms so that the clip restricts movement of the
tongue relative to the receiving area in either direction.
15. In a ski boot having opposed portions which are opened for
insertion of the foot and having securing means for securing said
portions after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band extending
between said portions, holding means attached to each of said
portions with the ends of said band being secured thereto, at least
one of said ends defining a threaded surface and internally
threaded means associated with at least one of said holding means
for receiving said threaded end whereby the relative positions of
said ends can be adjusted, the other end of said band opposite said
threaded end being releasibly held by the other holding means, said
other holding means comprising a bifurcated member, and including
an enlarged head attached to said other end adapted to be
releasibly engaged by said bifurcated member to thereby hold said
other end in position when said band is drawing taut between said
holding means, and means for drawing said band taut between said
holding means.
16. In a ski boot having opposed portions which are opened for
insertion of the foot and having securing means for securing said
portions after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band extending
between said portions, holding means attached to each of said
portions with the ends of said band being secured thereto, at least
one of said ends defining a threaded surface and internally
threaded means associated with at least one of said holding means
for receiving said threaded end whereby the relative positions of
said ends can be adjusted, means for drawing said band taut between
said holding means, a tongue secured to said boot, the edges of
said opposed portions being located in spaced apart relationship
with said tongue being located between said portions, said portions
overlapping the sides of said tongue whereby the edges of said
portions are drawn closer together when said band is drawn taut
whereby a seal is created between said portions and said tongue, an
ankle section having opposed portions defining edges located in
spaced-apart relationship, said tongue extending between said ankle
portions, and wherein additional securing means are attached to
said ankle portions, and wherein said tongue comprises an elongated
main body portion, a first stiffener associated with said body
portion for overlying the foot of the wearer, and a second
stiffener associated with said body portion for overlying the ankle
of the wearer, and a flexible area of said body portion located
between said stiffeners.
17. In a ski boot having opposed portions which are opened for
insertion of the foot and having securing means for securing said
portions after the boot is in place on the foot of the wearer, the
improvement wherein said securing means comprise a band extending
between said portions, said band comprising an internal member of
high tensile strength, and a coil spring surrounding said internal
member, the turns of said coil spring providing a threaded
structure, holding means attached to each of said portions with the
ends of said band being secured thereto, internally threaded means
associated with at least one of said holding means for receiving
one threaded end of said band whereby the relative positions of
said ends can be adjusted, and means for drawing said band taut
between said holding means.
Description
This invention relates to improvements in ski boots and more
particularly to a ski boot construction which can be manufactured
with maximum efficiency while still providing highly satisfactory
performance characteristics.
Ski boot constructions are commonly produced as heavy, relatively
awkward, and highly expensive structures. The weight, complexity
and expense results because the boots are subjected to high stress
conditions during use and, therefore, must be extremely durable to
provide satisfactory use and protection for the skier.
Because of the nature of ski boots, it has been difficult to
provide boots which are useful for a wide range of skiing ability.
For example, beginning skiers find it extremely difficult to wear a
boot which is rigid whereas experts desire a boot which provides
very little freedom for pivoting about the ankle joint.
Manufacturers, therefore, find it necessary to provide ski boots
designed for particular classes of skiers, or skiers simply use
boots which are not best suited for their skills.
In order to provide some economy in manufacturing ski boots, boots
have been made without taking the best fitting contours into
consideration. Latch mechanisms which have been used for the boots
have also been unsatisfactory from the standpoint of providing a
desirable degree of adjustment to provide the best fit.
It is a general object of this invention to provide a ski boot
construction which combines certain unique features resulting in a
ski boot which is substantially improved over prior constructions
from the standpoint of ease of manufacture and use, and from the
standpoint of versatility in that the boot can be adjusted for use
by beginners as well as more experienced skiers.
It is a further object of this invention to provide a ski boot
which can be efficiently manufactured while still having the most
desirable contours for proper fit and which can be provided with
latch means having a high degree of adjustability to also improve
fitting characteristics.
These and other objects of this invention will appear hereinafter
and for purposes of illustration, but not of limitation, specific
embodiments of the invention are shown in the accompanying drawings
in which:
FIG. 1 is a side elevation of a ski boot characterized by the
features of this invention;
FIG. 2 is a vertical sectional view of the ski boot;
FIG. 3 is a cross-sectional view taken about the line 3--3 of FIG.
1;
FIG. 4 is a fragmentary rear elevational view;
FIG. 5 is a cross-sectional view taken about the line 5--5 of FIG.
1;
FIG. 6 is a fragmentary side elevation partly cut away illustrating
the ankle section in an extended position;
FIG. 7 is an enlarged fragmentary, sectional detailed view
illustrating latch means utilized fro the ski boot;
FIG. 8 is a cross-sectional view taken about the line 8--8 of FIG.
7;
FIG. 9 is a perspective view of the latch construction;
FIG. 10 is a fragmentary sectional view illustrating an alternative
limiting device;
FIG. 11 is a sectional side elevational view of the limiting
device;
FIGS. 12 through 14 are perspective views illustrating components
of the limiting device;
FIG. 15 is perspective view of an alternative form of boot
construction;
FIG. 16 is an enlarged fragmentary plan view illustrating securing
means for the boot construction illustrated in FIG. 15;
FIG. 17 is an enlarged fragmentary rear elevation illustrating a
pivot limiting device for the boot construction;
FIG. 18 is an enlarged vertical sectional view taken about the line
18--18 of FIG. 17;
FIG. 19 is a fragmentary, sectional view of the tongue end;
FIG. 20 is a horizontal fragmentary sectional view illustrating the
securing means shown in FIG. 16;
FIG. 21 is a transverse sectional view illustrating the tongue
structure of the ski boot of FIG. 15; and,
FIG. 22 is a perspective view of the tongue.
The invention generally relates to a latching arrangement which can
be used in conjunction with various ski boot constructions. The
latching construction generally involves the use of a band which is
strong and flexible and having its ends secured to ski boot
portions. The band preferably comprises a coil spring fit around a
flexible cable or wire. The coil spring provides threads so that
the band can be adjusted to provide the correct amount of holding
force.
The constructions illustrated in FIGS. 1-14 in the drawings
comprise a ski boot 10 defining a sole portion 12 and a heel
portion 14. The upper portion of the shoe is divided into a main
body 16 and an ankle section 18.
The ankle section is pivotally connected to the body 16 by means of
rivets 20. The body section 16 includes flaps 22 and 24 which
overlap to provide a closure. The ankle section includes an inner
flap 26 and an outer flap 28 which is divided into two sections 29
and 31. It will be noted that the lower end of the flap 26 extends
over the upper end of the flap 24 so that a seal is provided all
along the front of the boot.
The ankle section 18 is provided with a downwardly extending tongue
30 which is received in a slot 32 defined by the back wall 34 of
the body section 16. In the embodiment of FIGS. 1 and 2, the tongue
30 defines an elongated opening 36, and this opening is positioned
opposite holes 38 defined in the wall section 40 of the back wall
34. These holes are adapted to receive the end 42 of pin 44. The
pin is mounted in a bracket 46 which is attached to the body 16. A
spring 48 extends between the bracket and a shoulder 50 on the pin
to normally urge the end 42 into the opening 36 defined by the
tongue. The handle 52 of the pin is provided so that the pin can be
pulled outwardly to release the pin from the opening 38 in which it
is received.
As best shown in FIG. 4, the back wall 34 of the body section 16
defines a substantially V-shaped cut-out portion 37. This cut-out
portion is provided to accommodate the tendency of this section of
the back wall to squeeze together in response to forward motion of
the tibia-fibula "shin."
The bracket 46 is attached to the body 16 by means of opposed arms
54 which extend around the sides of the body. The arms may be
riveted to the body at 56 to provide a pivotal connection whereby
the pin 44 can be moved into engagement with a different hole 38.
The position of the pin 44 determines the degree of allowable
movement of the ankle section. Thus, the location of the pin in the
lower hole 38 would substantially lock the tongue 30, and thereby
restrict movement of the ankle section. The upper hole 38 will
provide a degree of freedom corresponding with the length of the
opening 36 in the tongue. An intermediate position is provided for
the pin 44, and it will be appreciated that the number of positions
for adjustment as well as the size of the opening 36 can be
varied.
In the embodiment shown in FIG. 6, the holes 38 are threaded, and a
threaded pin 58 is provided. The extent of allowable movement is
then controlled depending upon which of the threaded holes 38 is
employed.
A preferred arrangement for a limiting device is shown in FIGS. 10
through 14. This limiting device includes a mounting bracket 110
having a central portion 112 dimensioned to fit snugly against the
enlarged portion 114 defined by the back wall 34 of the boot.
Openings 118 are defined by the flanges 120 provided on the legs
122 of the bracket. These openings provide means for securing the
bracket to the boot.
The central portion 112 of the bracket defines outwardly extending
shoulders 124 which are received in the grooves defined by the arms
126 of sliding bracket 128. The bracket 128 carries a spring 130
having an inturned portion 132 which rests in the seat 134 defined
by the bracket. A downwardly extending leg 136 of the spring
extends through a slot 138. The end of the leg 136, therefore,
extends into contact with the upper surface of the central portion
112 defined by the stationary bracket 110.
A locking handle 140 is pivotally connected to the upstanding arms
142 of the movable bracket 128 by means of a pin 144. As best shown
in FIG. 11, the handle defines a cam surface in the area of the
spring 130 and in the position shown, the leg 136 is being forced
downwardly. By raising the handle in the direction of the arrow
146, the pressure on the spring will be gradually relieved. The
central portion 112 of the bracket 110 defines a plurality of
V-shaped grooves 148 which receive the end of the leg 136 for
locking the sliding bracket in position relative to the stationary
bracket.
The movable bracket 128 carries a pin 150 which is adapted to
extend into the opening 36 defined by the tongue 30. In this
embodiment, the tongue 30 extends into the opening 152 defined by
the enlarged portion 114 in the back wall of the boot.
In the preferred form of the invention, the body 16 comprises a
single molded piece of polyurethane. The molding operation can be
efficiently carried out, particularly since the flaps 22 and 24 can
be integrally molded. The ankle section 18 including the flaps 26
and 28 and tongue 30 can also be molded as a single piece with
material such as polyurethane. The assembly operation for these two
pieces merely involves the attachment of the latch hardware, the
rivets 20 for achieving pivoting, and the pin mechanism.
The interior contours of the molded pieces 16 and 18 can be
determined by considering the matural foot contours. Thus, the
design of these pieces permits efficient production without
sacrificing the natural interior contours. The entire interior may
be lined with a cushion 60 having a tongue portion 62 attached at
64. This cushion is also designed so that the natural shape of the
foot will be accommodated.
The boot design also takes into consideration the malleolus or
ankle bone position since the pivot axis for the ankle section 18
substantially corresponds with this bone position. This is
particularly apparent when considering FIGS. 5 and 6. It will be
noted in this connection that the pivot axis is different on the
opposite sides of the boot. The rivet 20 on the outside of the boot
is positioned in accordance with the position of the lateral
malleolus while the rivet 20 on the inside is positioned in
accordance with the position of the medial malleolus. These
positions can be calculated for a given boot size in accordance
with known anatomical standards.
Although the material employed for the boot is relatively stiff, it
is desirable to provide additional stiffening means 65 in the sole
of the boot. This stiffening means may consist of a piece of wood,
metal or plastic molded integrally with the boot and dimensioned to
extend adjacent the exterior surfaces on the molded part.
Because of the thickness of the sole 12 and the relative stiffness
of polyurethane, particularly if the stiffener 65 is utilized,
bending of the boot in the top or vamp area 66 cannot be easily
achieved. In a modified form of the invention, the sole 12 defines
a radius bottom as shown at 68. This provides a rocker affect which
is desirable particularly because of the stiffness of the shoe and
to provide proper functioning of the safety bindings. Thus, if the
shoe sole were flat, pivoting movement relative to the ski would
take place at the front edge and, this fulcrum point is not
satisfactory for achieving release of the bindings at a proper
stress level.
FIGS. 7 through 9 illustrate an improved latch construction
employed for securing the flaps 24 and 28 relative to the shoe body
when these flaps are in overlapping relationship with the
underlying flaps 22 and 26. The latching mechanisms are
particularly useful with the boot construction of this invention;
however, these mechanisms have definite utility with respect to
boot constructions of other designs.
The latch arrangement comprises a plate 70 which is riveted to a
shoe section 72 comprising a portion of one of the flaps 24 or 28.
The rivet 74 includes a reduced diameter portion 76 which permits
pivotal movement of the plate 70.
Holding brackets are formed by means of U-shaped members 78 secured
by the rivets 80 to plates 70. Corresponding U-shaped members 82
are adapted to be received within the walls of the members 78.
Openings 84 are defined by the walls of the member 78 for receiving
the ends 86 of securing bands 88. The bifurcated side walls 90 of
the U-shaped member 82 provide openings permitting location of this
member within the member 78. A weld or other suitable securing
arrangement may be provided for holding the members 78 and 82
together.
The bracket arrangement provides open side walls whereby nuts 92
fitted around the ends 86 of the bands may be rotated with the
fingers. In the embodiment illustrated, the bands are formed by
means of a centrally located wire 94 and a coil 96 extending along
the length of the wire. The outer periphery of the cable provides a
thread for interfitting with the internal threads of the nuts
92.
The loop provided by the bands 88 is adapted to be held by means of
a lever 98. The lever defines teeth 100 which are engaged by the
loop in the band. After engagement with the loop, the lever is
pivoted about the mounting 102 thereby locking the loop in
position. The nuts 92 can be rotated for fine adjustment of the
band prior to pivoting of the lever to the locked position. This
provides a highly suitable arrangement for achieving a snug and
comfortable attachment of the flaps on each boot. Thereafter, the
wearer adjusts the limiting device with the position usually
depending upon skiing experience. Thus, a beginner usually requires
a larger degree of freedom, and this can be accomplished by
inserting the pin 44 or 58 in the upper hole or by eliminating use
of the pin altogether whereby the tongue will be free to move in
the slot 32. In the case of a more experienced skier, an
intermediate to lower hole would be utilized.
Irrespective of the amount of pivoting allowable, the pivoting
action will take place about the axis of the rivet 20 which
provides a natural pivot position from the standpoint of the ankle
joint of the wearer. In addition to the control provided for
pivotal movement, the construction provides a high degree of
lateral stability. The use of molded polyurethane and the design of
the overlapping portions of the body 16 and ankle section 18 are
important in this regard.
FIG. 15 illustrates a ski boot construction 210 comprising an
alternative form of the invention. This boot includes a sole
portion 212, a heel 214 and an upper divided into a main body
portion 216 and an ankle section 218. The ankle section is
pivotally connected at 220 in the manner previously described.
A limiting arrangement for determining the extent of allowable
pivotal movement is illustrated in FIGS. 17 and 18. As in the
previously described arrangement, this limiting arrangement
includes a tongue 222 attached to the ankle section which is
received within a pocket 224 formed in the main body of the boot. A
plurality of openings 226 are formed in the main body and are
aligned on either side of the pocket to permit the insertion of the
arms 228 and 229 of clip 230. As in the previously described
embodiments, the position of the clip will determine the extent of
allowable pivotal movement. A slot 232 is formed in the tongue to
receive the arms of the pin. The arm 229 is provided with a
pivoting end portion 231 whereby the clip can be locked in place
after it is properly positioned.
The clip 230 is designed to accomplished all of the advantages
previously described with reference to the limiting means. Thus, by
inserting the arm 229 so that only this arm extends through slot
232 with the arm 228 being exposed outside the rear wall of the
boot (as shown in dotted lines in FIG. 18), a limiting arrangement
as previously described is achieved. When the clip is inserted as
shown in solid line in FIG. 18, a distinct limiting arrangement is
achieved since pivoting movement is allowed but to a lesser extent.
Thus, in this position the arm 229 limits downward movement of the
tongue while the arm 228 limits upward movement.
Additional versatility is achieved when the clip is positioned as
shown in FIG. 19. In this instance, the arms 228 and 229 confine
the end portion 233 of the tongue. Accordingly, the tongue is
restricted against movement in either direction. The position at
which the tongue is held and, accordingly, the position of the
ankle section with respect to the body section can be varied
depending upon the location of the clip.
As best illustrated in FIGS. 20 and 21, the ski boot structure
includes a tongue 234 which is attached at the toe section of the
boot by means of fasteners 236. This tongue spans a gap defined
between the opposing edges 238 and 240 of the ski boot body section
216. The ankle section 218 includes a similar gap defined between
the opposing edges 242 and 244. A cushioned liner 246 is situated
within the boot, and this liner preferably completely encloses the
wearer's foot. A sponge backing 247 may be applied to the tongue to
complement the liner.
The ski boot body preferably comprises a single molded piece of
relatively stiff material, for example, a stiff polyurethane. The
ankle section may be formed of the same material, however, a
different material, which may be either a softer or stiffer
plastic, could be used in this area. The tongue 234 comprises a
molded plastic piece having a foot section 248 and an ankle section
250. The foot section of the tongue is located over the top of the
foot and it includes a central raised portion 251 which fits in the
gap between the edges 238 and 240. The ankle section 250 of the
tongue is situated adjacent the front of the ankle and it includes
a raised portion 253 situated between the edges 242 and 244. The
area of the tongue between the stiffeners is preferably relatively
flexible and grooves 252 and darts 255 may be employed to increase
the flexibility.
It will be noted when considering FIGS. 15 and 20 that the portions
251 and 253 of the tongue 234 define sides 254 and edges 257 which
provide a sealing arrangement in combination with the opposing
portions of the main body and ankle sections of the boot. As will
be explained, this overlapping relationship cooperates with the
securing means for the boot to create a closure which will prevent
any moisture from entering from outside the boot.
The securing means of the invention are preferably associated with
both the main body portion 216 and ankle section 218. It will be
appreciated that the number of these members will depend on the
size of the boot, cost factors, etc. The particular design
illustrated can thus be varied considerably depending upon
requirements.
The securing means include latch portions provided by the
bifurcated members 256. These latch members are adapted to
removably receive the balls 258 secured to the bands 260 which
extend over the boot. The opposite ends of the bands 260 are
attached to assemblies 262.
Each of the assemblies comprises a lever arm 264 pivotally
connected at 266 to a bracket 267. These arms are each provided
with an intermediate bore for receiving pivot pins 268. These pivot
pins are attached to internally threaded members 270 whereby the
members 270 are adapted to pivot relative to the lever arms.
The bands 260 should be flexible in nature and capable of resisting
tensile forces whereby the bands can be held taut between the
members 256 and 262. These characteristics, plus the provision of
external threads are best achieved with the design illustrated in
FIG. 7 wherein an internal cable or wire is surrounded by a coil
spring. This arrangement provides the necessary tensile strength
and flexibility with the turns of the coil providing the threaded
exterior. The opposite ends of the coil spring are fastened to the
internal cable to maintain the desired relationship.
In the use of the structure illustrated, the lever arms 264 are
located in the open position shown at the top of FIG. 16 whereby
the balls 258 are released from engagement with the latch member
256. In this condition, the user can readily pull the ski boot onto
his foot. It will be noted that the tongue 234 can be pivoted
outwardly from between the opposing boot and ankle portions to
increase the size of the access opening for insertion of the
foot.
Once the foot is in place, the balls 258 are located on the seats
provided by the latch members 256 with the bands 260 extending
between the arms 272 of the latch members. The levers 264 are then
pivoted to the closed position shown at the bottom of FIG. 16. It
will be noted that this pivoting movement moves the axis of the
pins 268 from one side of the lever axis to the other. Depending
upon the position of the band 260 relative to its associated
threaded member 270, the movement of the lever from the open to the
closed position will draw a latch member 256 toward the bracket
262. This will, of course, bring the edges 238 and 240 closer
together in the main body portion 216 while the edges 242 and 244
will be drawn closer together in the ankle section 218 when
latching occurs in the respective areas. A V-shaped cut-out portion
261 is provided in the foot section to prevent buckling when
closing occurs.
In the initial use of a ski boot, the position of the bands 260
relative to the members 270 will have to be adjusted. This can be
accomplished by simply releasing the lever arm which will loosen an
associated band whereby the band can be easily rotated to either
shorten or lengthen the portion of the band between the members 256
and 262. Even after the boot has been worn for a period of time,
the securing means can be very simply adjusted by releasing the
various lever arms and, in this connection, all of the bands are
adjustable independent of each other which permits selective and
fast adjustment.
The rotation of a band within a member 270 readily moves the band
inwardly and outwardly as desired. It will be appreciated that
additional adjustment could be accomplished by rotating the balls
258 to move the balls along the band; however, this arrangement is
not a necessary feature. The fact that the bands are flexible
causes them to conform to the curvature of the foot whereby the
bands do not "cut" into the foot during use.
The tongue and boot design, coupled with the design of the securing
means provides an ideal arrangement for providing a completely
comfortable fit while completely sealing the interior of the shoe.
In the locked position, the opposing boot and ankle sections are
maintained in tight engagement with the tongue portions 254. It
will be noted that the portions 254 have a substantial width to
allow for various positions of the boot edges without disturbing
the sealing relationship.
It will be understood that various changes and modifications may be
made in the above described construction which provide the
characteristics of this invention without departing from the spirit
thereof particularly as defined in the following claims.
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