[0001] In the skiing technique referred to as parallel skiing, the knees, ankles, feet and
the skis are essentially in touch and parallel with each other while maneuvers are
being executed. This technique allows one to steer with the ankles and knees and helps
to maintain the skier's weight generally over the center of the skis. Accordingly,
it is desirable for one who is learning to become a skier to master the technique
of keeping his or her knees close together. Ski instructors have often had the learner
hold his knees together by concentrating on holding:a glove or the like between the
knees. Prior art devices, such as those shown in the U.S. patents to Mathauser, No.
3,644,919; Borraccio, No. 3,774,572; and Caris, No. 3,973,333, have been proposed
for aiding a beginner in acquiring good skiing posture. Borraccio and Caris are particularly
concerned with maintaining the knees in proper relative position, Borraccio disclosing
an accordian-type contact member carried on a strap positioned on one of the skier's
legs just above the knee and extending inwardly toward the other leg. By means .of
this device, the skier knows whether or not his knees are close together. Caris discloses
molded silicone rubber straps that are adapted to be positioned on a skier's legs,
one strap having an inwardly-opening socket and the other strap having a ball that
is arranged to normally be seating in the socket. When the skier's knees move apart
a predetermined distance, the ball leaves the socket with a popping noise to indicate
that the knees have separated. The present invention provides a training aid that
is an improvement over prior art devices in that it provides a snap fastener which
releasably retains a pair of straps together and in the provision of elastic strap
material which gently urges the legs together as they tend to separate due to changes
in terrain, without causing the elements of the snap fastener to become disconnected
from each other. Also the elastic straps permit a considerable amount of relative
up-and-down generally vertical movement of the knees.
[0002] A training device includes two elastic straps, one of which is adapted to be positioned
around each leg of a skier and releasably connected to the other strap to aid the
skier in maintaining proper positioning of his legs.
[0003] Reference is now made to the accompanying drawings wherein:-
Figure 1 is a diagrammatic perspective of a skier using the training device of the
present invention.
Figure 2 is an exploded diagrammatic perspective of the training device with the two
elements of the device shown detached from each other.
Figure 3 is a side elevation of one side of one of the two straps of the training
device.
Figure 4 is a side elevation of the other side of the strap of Figure 3.
Figure 5 is a fragmentary plan of the device with the two straps attached, the view
being taken looking in the direction of arrows 5-5 of Figure 1, with the skier's legs
not indicated.
Figure 6 is an enlarged central section taken generally along line 6-6 of Figure 5.
DESCRIPTION OF A PREFERRED EMBODIMENT.
[0004] The training device 10 of the present invention is shown in Figure 1 in operative
position on a skier and, in general, it comprises two elastic straps 12 and 13. Each
strap encircles one of the legs of the skier on the outside of the legs of his pants
and, at the point where the straps are directly opposite each other, they are held
together by a releasable connector in the form of four snap members 15 (Figure 2)
which are arranged in two parallel rows of two snaps each. The straps 1-2 and 13 are
substantially identical to each other and each strap comprises a band 20 (Figure 3)
of elastic material that is, for example, two inches wide and eighteen inches long.
Each strap has a Velcro pad 22 sewn to its face near one end, and an identical Velcro
pad 23 sewn to the opposite face at the other end. Intermediate its length, each strap
has a reinforcing cloth panel 25 sewn to its face, and a part of each of the snap
fasteners 15 is secured in conventional manner to each strap at these reinforced,
intermediate portions of the straps.
[0005] The snap fasteners 15 may be of the type marketed by Risdon of Spartanburg, South
Carolina, under the mark Mighty Snaps. Each snap is a two-piece member including a
cap 30 that provides a socket and a locking member 31 that includes a projection or
pin that is adapted to be held in the socket. In the present embodiment, the caps
are disposed on strap 12 and the locking members are disposed on strap 13. In addition
to opposed wall members that are pressed tightly against opposite sides of the associated
strap, each cap 30 includes a disc-shaped head 30a, a stem 30b projecting from the
head, and a generally cylindrical flange 30c with an overhanging outer edge. A clip
30d, in the form of an interrupted circular loop of spring wire, is disposed in the
annular space defined by one of the wall members, the flange 30c and its overhanging
outer edge. The locking member 31 includes circular flanges that bear tightly against
opposite sides of the strap and a pin 3la that is arranged to be inserted into the
retainer clip 30d and held therein by the inward pressure of the spring clip 30d.
The pin 3la may taper outwardly slightly, as indicated in Figure 6, to assure a gripping
engagement by the generally circular clip 30d.
[0006] Referring to Figures 1 and 5, it will be seen that each of the straps 12 and 13 is
secured on a skier's leg by wrapping it around the pants leg just above the knee,
and then engaging the two Velcro pads 22 and 23 at the outside of the leg so that
the caps 30 on strap 12 will be on the inner side of the leg directly opposite the
pins 3la on strap 13. When the two straps are in place, the pins 3la of the locking
members 31 are engaged in the sockets of the caps 30 so that the two straps are releasably
held together as indicated in Figures 5 and 6.
[0007] During a run over typical terrain, the legs tend to act like pistons and they can
separate to some degree as they bounce up and down. The elastic straps gently pull
the legs together as they tend to separate, and they do this without causing the snap
fasteners to become disconnected. The elasticity of the straps is coordinated with
the release action of the snaps so that the knees can move apart a distance of from
6 to 8 inches before the snaps will release. On the other hand, should an excess force
be exerted on the snap fastener, such as during a fall, the snap will become disconnected
to prevent possible injury to the skier.
[0008] It will also be noted that the elasticity of the straps permits the cap and the locking
pins of the snaps to be easily moved into engagement even when the skier is wearing
gloves. The straps are wide enough so that they give broad, uniform comfortable distribution
of pressure all around the area of the leg to which it is attached and they do not
cut or groove into the leg.
1. In combination, a pair of straps (12,13) made of yieldable material,
means (22,23) for securing each strap (12,13) around one leg of a skier, and
releasable means (15) connecting adjacent sections of said straps (12,13) together,
said straps (12,13) being yieldable to permit limited movement of one leg of the skier
relative to the other in an up-and-down and in a lateral direction while said releasable
means (15) maintains the connection between said straps (12,13).
2...The combination of claim 1 wherein said releasable means (15) comprises interengageable
spring-loaded snap members (30,31).
3. The combination of claim 2 wherein there are four snap fasteners (15) disposed
in two rows that are parallel to each other and generally transverse to the longitudinal
centerline of each strap (12,13).
4. The combination of claim 1 wherein said strap- securing means (22,23) comprises
a pair of Velcro members (22,23) on each strap (12,13).
5. The combination of claim 1 wherein said yieldable material (12,13) is elastic material
comprising fabric having rubber woven into it.
6. The combination of claim 2 wherein each snap member (15) includes two interengageable
elements (30,31), one element comprising a pin (31) and the other element comprising
a resilient ring (30) adapted to frictionally grip said pin (31).