U.S. patent number 3,665,619 [Application Number 05/065,179] was granted by the patent office on 1972-05-30 for skier leg support.
This patent grant is currently assigned to Jet Stix, Inc.. Invention is credited to Brent E. Gray.
United States Patent |
3,665,619 |
Gray |
May 30, 1972 |
SKIER LEG SUPPORT
Abstract
A leg support specifically designed for application to the back
of the lower portion of a skier's leg. The leg support is
fabricated of a rigid substance and is designed to be secured by a
strap. The leg support overlaps the upper portion of the back of
the ski boot whereby the stiffness of the back of the ski boot is
transferred upwardly onto the skier's calf, adding strength to the
skier's leg during "availment." The term "availment" refers to the
technique of leaning back on the skis for acceleration.
Inventors: |
Gray; Brent E. (Kent, WA) |
Assignee: |
Jet Stix, Inc. (Enumclaw,
WA)
|
Family
ID: |
22060858 |
Appl.
No.: |
05/065,179 |
Filed: |
August 19, 1970 |
Current U.S.
Class: |
36/117.1 |
Current CPC
Class: |
A43B
5/0415 (20130101) |
Current International
Class: |
A43B
5/04 (20060101); A43b 000/00 () |
Field of
Search: |
;36/1.5,2,2.5R,2.5AL
;2/22 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Lawson; Patrick D.
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. A leg support for adding strength to the back of a skier's leg
when leaning back on the skis, comprising;
an elongated rigid body member curved to fit the lower portion of
the leg having a bulbous upper portion adapted to contact and
terminate at approximately the bottom of the calf portion of the
leg and a narrow lower portion adapted to contact the exterior of
the skier's boot adjacent the ankle area, and
strap means secured to the rigid body member on the narrow lower
portion but spaced from the bottom end thereof whereby the body
member serves as a first class lever, said strap means adapted to
be secured around the boot upper at a substantially vertical
portion of the boot, for securing the leg support in a position
whereat it overlies the skier's lower leg and the boot, extending
the stiffness of the back of the boot and the leg support upwardly
on the wearer's leg limiting the rearward movement of the leg
relative to the boot whereby the strap means serves as a fulcrum
tending to pivot the foot about the ankle and to lift the front of
the ski when the skier leans backwards.
2. A leg support as in claim 1 including inwardly extending means
which comprise a pair of integral protrusions having substantially
flat lower portions adapted to abut the upper edge of the boot and
limit the downward movement of the leg support.
3. A leg support for use by a skier and adapted to be applied to
the back of the lower leg and overlapping the ski boot
comprising;
an elongated main body portion having a relatively narrow first end
and a generally bulbous second end, said main body portion being
generally concave in configuration along its longitudinal axis when
viewed from the side adapted to contact the back of the skier's leg
and being outwardly flared on the bulbous second end,
an outwardly extending ridge paralleling the longitudinal axis and
spaced from the ends of the body portion,
means associated with the ridge adapted to receive a securing
strap,
a securing strap extending laterally on both sides of strap
receiving means and positioned to overly the upper portion of the
skier's boot,
and an inwardly protruding means on the inner surface of the body
portion adapted to contact the upper edge of the ski boot and
prevent relative downward movement thereof.
Description
BACKGROUND OF THE INVENTION
It has been found, primarily in the slalom-type skiing, that the
overall downhill speed of the skier can be greatly increased
through the use of the technique of availment, or leaning back upon
the skis and bring the tips of the skis up, such that the ski will
tend to plane over the snow in much the manner of water skis. One
of the problems with this technique of skiing is the extreme stress
placed upon the ankle and calf portions of the legs of the skier.
It is to be noted that the skier must still control his direction
of descent and does so by moving the forward portion of the skis as
well as leaning or changing the relative angularity of the ski and
the legs. Since these movements put substantial stress upon the
skier's leg, it is desirable to add support to the back of the leg
in an effort to prevent strain and possible breakage of the lower
leg.
With the above-noted facts in mind, it is an object of the present
invention to provide a leg support adapted for securement in a
position to give support to the back of a skier's leg. The support
is formed from a relatively rigid or stiff material so as to
increase the strength of the leg and add stiffening to the lower
portion of the leg.
It is another object of the present invention to provide support to
the back of the skier's leg whereby the inherent strength and
stiffness in the back of the normal ski boot is transferred
upwardly onto the calf of the skier's leg.
It is yet another object of the present invention to provide a
support for the back of a skier's leg which in essence becomes an
extension of the ski boot, being secured thereto in a manner which
prevents downward movement of the support, transferring the
strength of said boot upwardly along the skier's leg while allowing
sideward movement of the leg relative to the ski.
A still further object of the present invention is to provide a leg
support for use upon the back of the skier's leg giving added
support during "availment" and yet readily removable allowing
normal down hill skiing without interference.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the inventive leg support structure
secured in position to the back of a skier's leg;
FIG. 2 is a perspective view showing the interior portion of the
leg support and the strap means for securing the support,
FIG. 3 is a back view of the leg support showing the relative
locations of the elements;
FIG. 4 is a bottom plan view of the leg support showing in detail
the contours of said support,
FIG. 5 is a perspective view of another embodiment showing another
method of securing the strap to the support.
DETAILED DESCRIPTION THE DRAWINGS
As can be seen in the drawings, the basic leg support element
comprises an elongated relatively stiff main body portion 2. It is
contemplated in the preferred embodiment that the main body portion
2 will be made of a thermoplastic material, moldable to conform to
the specific shape of the user's leg.
The lowermost portion 4 of the elongated thermoplastic member 2 is
relatively narrow so that it may conform to the back of the ski
boot without protruding outwardly therefrom and serving as a
collection basin for snow.
The upper portion of the support is generally bulbous in
configuration, providing a wider support at the back of the skier's
leg as well as wrapping around the calf portion to provide lateral
support necessary during the turning of the skis. The attachment
means hereinafter described, in cooperation with the shape of the
support permits relative sideways movement of the leg with relation
to the ski.
The bottommost portion of the rigid support element terminates at 8
serving as a means for retaining the leg support in its proper
vertical position by resting against the outwardly protruding heel
portion of the ski boot. The uppermost portion 10 of the support
element flares outwardly to provide a relatively smooth surface for
contacting the leg, and not presenting an abrasive or otherwise
uncomfortable edge portion. For added comfort of the wearer, a
resilient pad 11 may be secured to the inside of the upper portion
10.
Approximately centrally located in the leg support, and running in
a general longitudinal direction, vertical when in use, is an
outwardly protruding ridge 12 having a pair of notches 14 cut
therein to receive a strap 16. It is to be noted that the strap 16
is a standard commercial item, not considered part of this
invention, and therefore will not be described in detail. However,
it is to be noted at this point that the notches 14 are
substantially longer than the strap 16 is wide, allowing relative
vertical adjustment of the strap with relation to the leg support,
to accommodate boots of different designs or different dimensions.
Likewise, the strap is adjustable in length having quick-release
latch means similar to that found upon ski boots.
The preferred embodiment of the leg support includes at its upper
portion, a pair of inwardly protruding elements 18 adapted to rest
against the upper portion of the skier's boot to prevent relative
downward movement of the leg support. It will be readily apparent
that when the skier leans back on his skis, which are locked to the
ski boots, there will be considerable downward force presented by
the calf of the skier's leg on the upper portion of the leg
support. Thus, it is necessary to provide substantial vertical
locking means to retain the leg support in position.
For additional strength, the leg support may well include
longitudinal ridges 20 on the inside of the support, (see FIG. 2)
as well as having the protruding ridge 12 be of a stairstep design
as shown in FIG. 5, having steps 13.
Further to be noted in FIG. 5 is the alternative method of securing
the strap. The alternative method has the advantage of presenting a
solid exterior surface thus preventing the ingress of show and
comprises a slight indentation in the ridge 12 wherein an external
strap 22 is secured to the exterior of the ridge. For additional
strength in the upper portion of the support 2, the elements 18
will have their edges parallel to the ridge 12.
* * * * *