U.S. patent number 3,793,749 [Application Number 05/349,287] was granted by the patent office on 1974-02-26 for ski boot.
This patent grant is currently assigned to Gertsch AG. Invention is credited to Ernst Gertsch, Ulrich Gertsch.
United States Patent |
3,793,749 |
Gertsch , et al. |
February 26, 1974 |
SKI BOOT
Abstract
A ski boot having outer upper portions which can be pivoted
about hinges with regard to the sole of the ski boot from an open
position into a closed position. The outer upper portion arranged
at the region of the vamp and the outer upper portion arranged at
the region of the quarter are coupled to one another by means of at
least one rope- or cable traction element which transmits the
closing movement of the one outer upper portion as a closing
movement to the other outer upper portion.
Inventors: |
Gertsch; Ernst (Wengen,
CH), Gertsch; Ulrich (Interlaken, CH) |
Assignee: |
Gertsch AG (Interlaken,
CH)
|
Family
ID: |
10097473 |
Appl.
No.: |
05/349,287 |
Filed: |
April 9, 1973 |
Foreign Application Priority Data
|
|
|
|
|
Apr 17, 1972 [GB] |
|
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17568/72 |
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Current U.S.
Class: |
36/117.6;
36/50.5; 36/118.3; 36/118.2 |
Current CPC
Class: |
A43B
5/0449 (20130101); A43C 11/16 (20130101) |
Current International
Class: |
A43C
11/00 (20060101); A43C 11/16 (20060101); A43B
5/04 (20060101); A43b 000/00 () |
Field of
Search: |
;36/2.5R,2.5AL,2.5E,2.5F
;30/50 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Lawson; Patrick D.
Attorney, Agent or Firm: Kleeman; Werner W.
Claims
What is claimed is:
1. A ski boot having a sole, a quarter, a vamp and outer upper
portions, said outer upper portions being pivotable about hinges
with respect to the sole from an open position into a closed
position, one of the outer upper portions being arranged at the
region of the quarter and the other outer upper portion being
arranged at the region of the vamp, the outer upper portion
arranged at the region of the vamp and the outer upper portion
arranged at the region of the quarter being coupled with one
another by at least one cable traction element which transmits the
closing movement of the one outer upper portion as a closing
movement to the other outer upper portion.
2. The ski boot as defined in claim 1, further including means for
pivotably mounting the outer upper portion arranged at the region
of the vamp about a pivot axis located at the region of the tip of
the ski boot, and means for pivotably mounting the outer upper
portion arranged at the region of the quarter about a pivot axis
located at the region of the heel of the ski boot, both pivot axes
extending substantially transversely with respect to the lengthwise
central plane of the ski boot.
3. The ski boot as defined in claim 2, further including a first
deflecting element arranged at the region of the pivot axis of said
one outer upper portion arranged at the region of said quarter and
a second deflecting element arranged offset with respect to the
first deflecting element, the cable traction element being
connected at one end with said one outer upper portion and being
guided about the first and second deflecting elements, both of said
deflecting elements being secured at said one outer upper portion,
at least one further deflecting element stationarily arranged with
respect to the sole of the boot, and the cable traction element
being guided about said further deflecting element and being
connected at its other end with the other outer upper portion
arranged at the region of the vamp.
4. The ski boot as defined in claim 3, further including a spring
for connecting the one end of the cable tension element with said
one outer upper portion arranged at the region of the quarter.
5. The ski boot as defined in claim 3, further including means for
adjusting and fixing the connection location of the one end of the
cable traction element with the associated outer upper portion in
the direction of the cable traction element.
6. The ski boot as defined in claim 4, further including clamp
closure means for locking in closed position the outer upper
portion arranged at the region of the quarter of the boot.
7. The ski boot as defined in claim 4, further including a set of
said further deflecting elements, said cable traction element
following the second deflecting element being guided in zigzag
configuration over said set of further deflecting elements, said
set of further deflecting elements being secured in alternating
fashion stationarily with respect to the sole of the ski boot and
at the outer upper portion arranged at the region of the vamp of
the boot, and wherein the other end of the cable traction element
is anchored at a given location.
8. The ski boot as defined in claim 7, wherein the given anchoring
location is defined by said outer upper portion which is located at
the region of the vamp of the boot.
9. The ski boot as defined in claim 7, wherein said given anchoring
location is a location which is stationary with respect to the sole
of the ski boot.
10. The ski boot as defined in claim 2, wherein said outer upper
portions comprise curved plates formed of a bending- resistant
material, said ski boot being provided with a flexible inner upper
anchored to the sole, said outer upper portions at least partially
enclosing the flexible inner upper in the closed position
thereof.
11. The ski boot as defined in claim 10, wherein said outer upper
portions are formed of a material selected from metal or reinforced
plastic.
12. The ski boot as defined in claim 10, wherein the outer shaft
portion arranged at the region of the quarter is provided at its
inside with a pressure padding which acts through the flexible
inner upper at the heel of the foot of the user.
13. The ski boot as defined in claim 4, wherein the connection
location of the spring is adjustable and fixable at the traction
cable element in the direction thereof at the region of the quarter
of the ski boot.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a new and improved construction of
ski boot having outer upper portions which are pivotable about
hinges with respect to the sole of the ski boot from an open
position into a closed position.
Such type ski boots have become known in this particular art in
more recent times under the designation "shell ski boots," wherein
the term "shell" generally designates the outer upper portions of
the boot which are fabricated usually from a very rigid or stiff
plastic. These outer upper portions are either directly provided at
their inner surfaces with a thick padding, or in their closed
position they enclose an inner boot which is part of the ski boot
proper, however can be detached from the sole and the outer upper
portions.
The known ski boots of this type are associated with the following
drawbacks: in order to be able to bring all of the outer upper
portions into their closed position and to lock the same in such
position, numerous manipulations are necessary and also there is
required the clamping of a number of independent clamp elements.
Consequently, putting on the boot is not only rendered more
difficult, but also it is not readily possible to obtain the
optimum closed position if there is considered the fact that a
single closed position which is determined by fixed stops cannot be
really optimum for all encountered situations and over a longer
period of time.
SUMMARY OF THE INVENTION
Hence, it is a primary object of the present invention to provide
an improved construction of ski boot of the aforementioned type in
which all of the outer upper portions can be brought into the
closed position so-to-speak with one manipulation, and additionally
there is present a certain composite action between the outer upper
portions in the closed position, contributing to the wearing
comfort and especially to the support offered by the ski boot.
Now in order to implement this object, and others which will become
more readily apparent as the description proceeds, the ski boot of
the previously mentioned type as proposed by the invention
contemplates coupling together the outer upper portions arranged at
the region of the vamp and the outer upper portion arranged at the
region of the quarter of the boot by means of at least one rope- or
traction cable element, which transmits the closing movement of the
one outer upper portion as a closing movement to the other outer
upper portion.
In order to further facilitate getting into such type boot, the
outer upper portion arranged at the region of the vamp can be
pivotable about a pivot axis located at the region of the tip of
the boot and the outer upper portion arranged at the region of the
quarter can be pivotable about a pivot axis located at the region
of the heel. Both pivot axes can be arranged transversely with
respect to the lengthwise central plane of the ski boot. The rope-
or cable traction element is advantageously connected on the one
hand with one of the outer upper portions and guided about a first
deflecting element arranged at the region of its pivot axis and
then about a second deflecting element which is arranged offset
with respect to the first deflecting element, and wherein both
deflecting elements are connected to such outer upper portion.
Further, the cable traction element or the like is guided over at
least one additional deflecting element which is stationary with
respect to the boot sole and at the other end is connected with the
other outer upper portion. The one end of the traction cable can be
connected via a spring, especially a tension spring with the outer
upper portion arranged at the region of the quarter of the boot,
wherein at such outer upper portion there are attached the first
and second deflecting elements.
According to another advantageous constructional embodiment of the
invention, it is contemplated to construct the one end of the rope-
or cable traction element so as to be adjustable and fixable with
the associated outer upper portion in the direction of the cable
traction element. Since with the ski boot of this development only
the one outer upper portion needs to be directly arranged in its
closed position, it is advantageous to provide the outer upper
portion arranged at the region of the quarter of the boot with an
arresting strap or clamp or the like. This outer upper portion can
be configured such that it possesses at its upper region an
extension flap which can be bent or folded over in the manner of a
collar, in its closed position engaging about a part of the tubular
upper.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and objects other than
those set forth above, will become apparent when consideration is
given to the following detailed description thereof. Such
description makes reference to the annexed drawings wherein:
FIG. 1 is a schematic side view of a first exemplary embodiment of
ski boot designed according to the invention; and
FIG. 2 is a similar showing of a further simpler constructional
embodiment of ski boot.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Describing now the drawings, the ski boot depicted in FIG. 1, by
way of example, has been designated in its entirety by reference
character 10 and will be understood to comprise a sole 11 at which
there is connected an inner upper 12. The inner upper 12 is
preferably fabricated from a weather-resistant material which,
however, is pliable and comfortable to wear. In FIG. 1 the cap or
toe box of the inner upper is designated by reference character 13,
the tongue by reference character 14, and the quarter of the boot
extending from the heel up to the region of the upper end of the
inner upper 12 by reference character 15.
At the lower region of the quarter 15 there is secured by means of
rivets 16 a hinge body or hinge element 17 at which there is
anchored a pivot pin or shaft 18. Pivotably mounted upon the pivot
pin 18 is a hinge eyelet 19 which is secured in any suitable manner
to the lower end of an outer upper component or portion 20 in the
form of a curved plate arranged at the region of the quarter 15 and
in the closed position thereof enclosing the same. This outer upper
portion can be extended by a flap 21 at its upper end confronting
the observer of FIG. 1, this flap 21 in its closed position also
engaging about the tongue 14 of the inner upper 12 and being
arrestable or fixable in position by means of a single clamp-type
closure 22 or equivalent structure.
The cap or toe box 13 of the inner upper 12 is covered by a
metallic protection cap 22 which carries at its upper end a hinge
or pivot eyelet 23 with a pivot pin or shaft 24. At the pivot pin
24 there is articulated in any suitable manner an outer upper
portion 25 in the form of a curved plate which is arranged at the
region of the vamp of the boot and which spans over such in its
closed position.
At the inside of the outer upper portion 20 there is anchored at
the region of its upper end an attachment element 26 which can be a
threaded nipple or sleeve which may be adjustable in length. At the
attachment element 26 there is secured one end of a spring e.g. a
tension spring 27, the other end of which is connected with one end
28 of a suitable rope- or cable traction element 29, conveniently
referred to hereinafter simply as cable traction element 29.
Starting from this one end 28 of the cable traction element 29 it
will be seen that the latter extends initially along the inside of
the outer upper portion 20 downwardly in the direction of the pivot
pin 18, then about a rotatably mounted deflecting roller or roll 30
arranged at and conveniently secured to the inside of the outer
upper portion 20 and at the region of the pivot pin 18, then about
a further rotatably mounted deflecting roller or roll 31 secured at
the inside of the outer upper portion 20, however in spaced offset
relationship from the aforementioned deflecting roller 30. From the
region of the deflecting roller or roll 31 the cable traction
element 29 departs between the outer upper portion 20 and inner
upper 12 and is then guided in a zig-zag configuration about a set
of further deflecting rollers or rolls 32-35. The deflecting
rollers 32 and 34 are rotatably mounted at roller supports 36 and
37 riveted to the outer upper portion 25, whereas the deflecting
rollers 33 and 35 are rotatably mounted at the roller supports 38
and 39 respectively, riveted to the inner upper 12. The front or
other end 28a of the cable traction element 29 is blocked in any
suitable and therefore not particularly illustrated fashion at the
roller support 39.
Now if with the illustrated ski boot the clamp 22 is opened, then
the outer upper portion 20 can be rocked or pivoted away in
clockwise direction from the inner upper 12 and the quarter 15.
Consequently, the deflecting roller 31 is also raised and the cable
traction element 29 is extensively slackened so that also the outer
upper portion 25 can rock away from the vamp of the inner upper 12.
During the reverse movement, that is to say, during upwardly
tilting of the outer upper portion 20, the deflecting roller 31
again descends and thereby once again tensions the cable traction
element 29, resulting in pivoting back of the outer upper portion
25 into its closed position.
In FIG. 1 there has been only shown, for the purposes of
simplifying the illustration, a cable traction element at the side
of the boot confronting the observer. It should be understood
however that the arrangement can be symmetrical with respect to the
lengthwise central plane of the ski boot, so that also there can be
secured to the attachment element 26 and to the tension spring 27
or at two such attachment elements and tension springs, two cable
traction elements, of which the one extends towards the front at
the left side and the other at the right side of the boot 10.
Finally, in dotted lines in FIG. 1, there is shown a heel padding
or cushion 40 which is secured at the lower region at the inside of
the outer upper portion 20. The purpose of this heel padding 40
resides in the features that, during the closing movement of the
outer upper portion 20, it acts through the inner upper 12 upon the
foot of the wearer in the sense that the wearer's foot will be
pushed completely toward the front within the boot 10. In the
closed position the heel padding or cushion portion 40 also again
acts through the inner upper 12 in the manner that the heel of the
foot will be pressed downwardly towards the boot sole, so that
there prevails a feeling that the foot is positively and surely
supported in the boot.
The exemplary embodiment of ski boot depicted in FIG. 2, and
wherein the functionally corresponding components have been
generally designated with the same reference characters, only
differs from the exemplary embodiment of ski boot depicted in FIG.
1, in that the front end 28a of the rope- or cable traction element
29, in other words the heretofore designated cable traction
element, is wrapped in a loop or sling 41 about a single roller or
roll 42. This roller 42 is rotatably mounted at a roller support 43
which is riveted to the rear end of the outer upper portion 25.
With this exemplary embodiment, and while assuming the same
characteristics of the tension spring 25, the tension force which
can be exerted upon the outer upper portion 25 during upward
rocking of the outer upper portion 20, is somewhat less, however
during downward rocking of the outer upper portion 20 it is
possible to upwardly rock to a greater extent the outer upper
portion 25, so that there is further facilitated the climbing into
the ski boot in the embodiment of FIG. 2.
Also in the case of the embodiment of FIG. 2, there are applicable
the comments which were made in conjunction with the embodiment of
FIG. 1, namely also in this case there can be provided two cable
traction elements 29 arranged essentially symmetrically with
respect to the lengthwise central plane of the boot.
As already mentioned, while the inner upper can be formed from a
pliable, flexible, light and comfortable to wear material, the
outer upper portions 20 and 26 are formed of a relatively bending-
resistant material, for instance sheet metal with or without a
plastic coating, or from a reinforced plastic.
The exemplary embodiments of ski boots disclosed herein not only
afford advantages during opening and closing thereof, but also
during use when skiing. It should be appreciated that during skiing
there cannot be avoided, as is known, pivotal movements of the
lower leg with regard to the foot, since such movements constitute
part of the proper ski technique. Now if the lower leg is bent
forwards, in other words as such would arise when leaning forward
on the skiis, then there firstly occurs, due to the coupling with
one another of the upper portions or components 20 and 25, an
increased tension force which acts upon the outer upper portion 25,
and secondly an increased action of the heel padding 40, so that
the sole of the foot is forced to bear against the sole of the
boot. When returning to the normal position, there of course
decreases the previously increased tension force which, in turn,
can be adjusted to a value corresponding to the individual
requirements by displacement of the attachment element 26.
By virtue of the spring arranged at the region of the Achilles heel
between the inner upper and the outer upper portion, it is possible
to also obtain for the described embodiments of ski boots
well-defined bending characteristic for the upper part of the
tubular-like upper, resulting in optimum comfort during skiing and
increased safety during a fall towards the front (absorption of
energy). By adjusting the attachment element such bending
characteristics can be accommodated to the individual requirements
(skill of the skier, properties of the snow, and so forth).
While there is shown and described present preferred embodiments of
the invention, it is to be distinctly understood that the invention
is not limited thereto, but may be otherwise variously embodied and
practiced within the scope of the following claims.
Accordingly,
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