close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3096540

код для вставки
July 9, 1963
L. E. ALMGREN
3,096,530
WATER SKIS
Filed Oct. 12. 1960
3 Sheets-Sheet 1
INVENTOR.
.1was Z.’19/777 702
, 94322725;
July 9, 1963
L, E. ALMGREN
3,096,530
WATER SKIS
Filed Oct. 12. 1960
5 Sheets-Sheet 2
w \h.mw\w\m
wgYMi\_
My
mmm;
. \_Wm.nHFL-f.
INVENTOR.
[02125
FY27
BY
#5072765;
u
July 9, 1963
L. E‘ ALMGREN
3,096,530
WATER sxzs
Filed Oct. 12. 1960
s Sheets-Sheet a
IN VEN TOR.
fowl-5E)?!” r272,
822% ‘ $041416
?ZZZrneg.
United States Patent 0
2
1
Another object is the provision of a plurality 'of mod
i?cations of the invention which are easily attachable to
‘or detachable from existing skis so that the advantages
3,096,530
a 7
WATER SKIS
Louis E. Almgren, 1928 Rutherford Ave.,
Chicago 35, Ill.
Filed Oct. 12, 1960, Ser. No. 62,248
10 Claims. (Cl. 9-310)
3,096,530
Patented July 9, 1963
of the invention may be realized by the owners of existing
skis which are not so equipped.
The present application is a continuation-in-part of
,my prior application on Water Skis, ?led September 19,
The present invention relates to water skis, and is par
1960, Ser. No. 56,715, now abandoned.
.
Other objects and advantages of the invention will be
skis adapted to be held and maintained by the user in the 10 apparent from the following description and the accom
panying drawings, in which similar characters of refer
best position for take-off with a minimum amount of ef
ence indicate similar parts throughout the several views.
fort or skill.
Referring to the three sheets of drawings,
Various methods of take-off with water skis are prac
FIG. 1 is a diagrammatic illustration showing one of
ticed by different users, depending upon the point of take
off; but the best point of take-off is in fairly deep water; 15 the best positions which may be taken by a user for be
ginning the take-oif with the present skis, utilizing a pair
and this is also the most frequent point from which take
of skis of the present construction and a life saving jacket;
off is made on water skis because water skiers often take
FIG. 2 is a top plan vview of a water ski embodying
a spill in the deeper water, where it is necessary to start off
my
invention;
again.
FIG. 3 is a side elevational view in partial section;
The proper position for such a take-off is with the feet 20
FIG. 4 is a sectional view taken on the plane of the
and skis well spread for better stability and with the skis
line 4-4 of FIG. 3, looking in the direction of the ar
held at an angle which is diagonal to the surface of the
ticularly concerned with the provision of improved water
water so that a pull on the skier will cause the skis to
rows;
rise to the surface into skiing position.
It is di?icult to hold the skis in this starting position,
FIG. 5 is a sectional view, taken on the plane of the
line 5-5 of 1FIG. 3, looking in the direction of the ar
especially for the novice or beginner or in rough water;
and it is dif?cult to maintain the proper position while
rows;
the driver of the towing boat is getting ready to start or \
1FIG. 6 is a sectional view, taken on the plane of the
line 6-6 of FIG. 3, looking in the direction of the ar
rows;
build up speed. When the skier ?nds one ski dropping
FIG. 7 is a view similar to FIG. 2 of a modi?cation in
below the other and when he tries to raise that ski, the 30
‘which the ski is provided with a readily attachable uni
torque exerted on his body reacts on the position of the
tary ?otation body which is located rearwardly of the
other ski; and frequently a good take-off depends on exact
front end of the ski and which may be of minimum size;
timing, as the skier must reach the best position for take
FIG. 8 is a side elevational view of the ski of FIG. 7;
off at the same time the towing boat begins to build up
FIG. 9 is a fragmentary top plan view of another
speed, which causes the water to exert a pressure on the 35
modi?cation in which the ski is provided with a readily
bottom of the ski.
attachable ?otation member which may be in the form
One of the objects of the invention is the provision of
improved water skis, the structure of which is adapted to
of a block of‘balsa wood, cork, polyethylene foam, or
speed with a minimum amount of difficulty,
Another object of the invention is the provision of im
proved water skis which make it easier for beginners and
9 in partial section;
with the skis of the prior art.
Another object of the invention is the provision of
FIG. 11;
‘FIG. 13 is another fragmentary top plan view of the
other light material, detachably secured to the ski by a
enable the skier to assume an optimum position for take
off in the water and to maintain such a position while 40 plurality of screw bolts;
FIG. 10 is a fragmentary side elevational view of FIG.
waiting for the towing boat to start up and build up
FIG. 11 is a fragmentary top plan view of another
streamlined form of ?otation body which may be made
skiers of moderate skill, as well as those who are most 45 of any of the materials just mentioned, and which is
, quickly attachable to existing skis;
skillful, .to get in the best position for take-off and to
FIG. 12 is a fragmentary side elevational view of
maintain that position with greater ease and facility than
improved skis which are easier to ‘?nd in the water after 50 front end of a ski provided with a minimum size stream
lined ?otation body, which may be made of light wood,
a ski has become lost by becoming detached from the foot
balsa wood, cork, polystyrene foam, or similar material,
,
which is quickly attachable to a ski;
Another object of the invention is the provision of an
FIG. 14 is a fragmentary side elevational view of
improved ski structure provided with a buoyant cham
ber located at the forward end of each ski above the body 55 FIG. 13;
FIG. 15 is a fragmentary top plan view of another
of the ski and immediately behind the curved forward end
ski having a ‘?otation body which is detachably secured,
so that the buoyancy takes effect at the front end of the
of the skier.
ski.
Another object of the invention is the provision of a
ski having such a buoyant chamber which is simple in
construction, has a minimum number of parts, is adapted
to be manufactured at a low cost, and which may be con
structed of the same materials as are now used in various
and which may be shaped in imitation of a seal or any
other desired artistic shape;
15FIG. 16 is a fragmentary side elevational view of FIG.
FIG. 17 is a fragmentary view in perspective of a por
tion of a ski having a short ?otation body in the form of a
block, which is located rearwardly of the front end and just
Another object of the invention is the provision of im 65 in front of the foot fastening, where it is secured by a ?ex
different types of ski structures.
proved skis which may serve as safety devices for use
as a‘ life saving body by anyone needing such support in ,
the water.
ible band having a buckle;
‘
FIG. 18 is va similar view of another modi?cation in
which a ?otation block is secured by means of stirrups and
Another object of the invention is the provision of an
a pair of ?exible straps having buckles.
improved shape for water skis, the parts of which are 70 Referring to FIG. 1, this is a diagrammatic illustration
streamlined and suitably curved so that there are no sharp
of a new combination of elements including my improved
projections which might cause injury to users.
3,096,530
3
skis in which the user 10 is provided with any suitable form
of life preserver jacket 11 and a pair of my skis 12, 13, hav
ing buoyant chambers 14, 15 toward the front end of the
skis.
These chambers are preferably located as far forward as
possible; and this portion of the skis may be colored or
decorated in such manner that they are more readily vis
ible when a ski has been lost and is ?oating in the Water.
Ordinarily water skis are so made that they ?oat; but as
they ?oat level or nearly level in the water, they are prac
tically submerged and hard to see, whereas my water skis
will ?oat with the front end upward, as the buoyant cham
bers tend to ?ll that end of the ski above the water, while
the other end extends downward, when the ski is made
of aluminum or “Fiberglas,” heavier than water. When
the ski is made of wood, only the ?oat projects above the
horizontally ?oating ski in the water.
Each ski may be constructed with the usual components;
and the ski has a ?at body 16 with an upwardly turned
end 17, terminating at a rounded point 18. Tile rear end
of the ski is preferably rounded at 19; and it may be pro
vided with a metallic aluminum ?n 20 having a central at
taching ?ange 21, which is secured to the bottom of the
body 16 by bolts or rivets 22.
The ski is preferably provided with suitable foot receiv
ing means or harness for engagement with the feet of the
user; and this may comprise a forward U-shaped soft,
4
may also be made out of Fiberglas or any of the materials
now used for making water skis.
_
Referring to FIGS. 7 and 8, these are views showing a
modi?cation of the invention in which the ski 41 is pro
vided with a readily attachable and detachable buoyant
member 42 located just rearwardly of the front end 18
of the ski, since it has been found that this is a suitable
and effective location for a buoyant member of smaller
size. The upward projection of member 42 is less than
the upward projection of the forward end 18 of the ski
(FIG. 8) whereby the member does not interfere with
the normal travel of the ski through water when in use.
In the embodiment of FIGS. 1-6, where the top of the
ski is provided with a buoyant unit extending to the front
tip of the ski, much of this buoyant unit is actually lo
cated above the water, indicating that it may be larger
than absolutely necessary for use in facilitating the easy
take-off. Also, there are thousands of skis already in use,
to which such a buoyant unit may be applied if it is con
structed as a separate accessory to be attached to present
skis.
Thus the modi?cation of FIGS. 7 and 8 may consist of
a molded plastic or drawn metal upper wall 43 made of
aluminum or any suitable plastic, and having a border
?ange 44 which may be secured to a lower wall member
45 with an intermediate gasket, or may be cemented or
welded in such manner as to form a closed chamber 46.
resilient, ?exible rubber member 22 having attaching
The lower wall ?ts the contour of the ski where it is to
?anges 23, which are clamped to the ski by a pair of metal
be attached; and it may be secured to the ski by a plu
strips 24, 25 secured by through rivets 26, which extend 30 rality of wood screws or bolts 47, provided they are ar
through the rubber and through the ski body, but are lo
cated ?ush or below the surface on the lower side of the
ranged in such manner that there are no projections on
the bottom of the ski.
The buoyant unit 42 may be molded out of rubber and
may be secured by waterproof glue or adhesive to any
ward the toe of the user and has its largest opening at the 35 type of existing ski. In the event it is made of metal, the
rear end 28 over the instep and a smaller opening 29 at
lower wall may be Welded, brazed or riveted to the top
the front end for the toes.
wall; and if desired, it may be empty and ?lled with air
The foot of the user is held in the U-shaped member 27
or it may have a ?lling of “Styrofoam” or other buoyant
by a rear molded rubber member 30 of resilient, ?exible
plastic foam.
rubber having an attaching ?ange which is secured to the 40
Referring to FIGS. 9 and 10, this is a modi?cation in
metal base plate 31 by a plurality of rivets 32 passing
which a self-contained rectangular block 48 of balsa, cork,
ski.
The U-shaped rubber member 27 tapers downward to
through the base plate through the rubber attaching ?ange
and through a curved top plate 33.
>
The heel securing member 30 slopes forward toward its
top so that it overhangs the heel and has a U-shaped
formation 34, open at the top, engaging above the heel.
The base plate 31 is preferably rectangular in form,
but has a U-shaped opening 34 around the heel; and it
is provided with a pair of lateral slots 35 receiving a pair
or light Wood is secured to the top of the ski 49 in front
of the foot fastenings, but rearwardly of the front end
18. Such a buoyant block may be made also of plastic
foam, such as “Styrofoam”; and it may be solid or hol
low, or made of non-buoyant materials when it is hollow
and ?lled with air or gas.
It may be attached to the ski by having through bolts
50, the heads 51 of which are countersunk in the bottom
of screw bolts 36, which are threaded into nuts located 50 of the ski; and the bolts may pass through bores 52 in the
?ush with the lower surface of the ski so that the heel
block 48 and may be provided with washers 53 and wing
member may be adjusted forward and backward and
clamped in position to secure the ski on the foot of the
user.
nuts 54, clamping the buoyant unit to the ski.
Referring to FIGS. 11 and 12, these are views of an
other modi?cation in which a stream-lined buoyant body
55 of buoyant balsa, cork, light wood, or plastic foam
The buoyant chambers 14, 15 may be identical and
they are located, as shown, between the foot harness for
is shaped to ?t the top of the ski 56 and secured to the
ward portion 22 and the rounded point 18 of the ski. The
ski by a plurality of screw bolts 57 provided with washers
chambers may consist of an upper wall 37, which is
and wing nuts 58, thereby providing an assembly which
stream-lined to substantially U-shape, as shown in FIG. 4,
can be attached to any existing ski.
and tapered backward to become shallower at 38, near its 60
Referring to FIGS. 13 and 14, in this modi?cation the
rear end; and the lower edges 39, 40 of the wall 37 are
buoyant unit 59 is stream-lined and made of minimum
shaped to abut against the top of the ski, which they ?t,
thickness to provide the necessary amount of buoyancy.
and with which they form the buoyant chamber 14 that
It is located rearwardly of the curved end 18 to eliminate
is ?lled with air. In some embodiments of the invention
the necessity for shaping the buoyant unit to ?t the curved
the buoyant chamber may be ?lled with plastic foam.
end of the ski; and it is secured by a plurality of bolts 60
having wing nuts ‘61.
The edges 39, 40 are secured to the top of the ski by
Referring to FIGS. 15 and 16, in this embodiment the
waterproof cement; and when made of wood, the entire
buoyant member 62 simulates the shape of a seal; but it
ski is primed and coated with waterproof varnish so that
may be varied in its design to simulate any animal, ?sh,
it will not absorb water and will not become water-logged.
or bird, and may be attached to the ski by a plurality of
I desire it to be understood that the illustration of the
wood screws 63 screwed into the wood of the ski, but
ski construction is merely exemplary of one type; and the
not penetrating to the bottom of the ski.
ski may be made of light metals, such as aluminum, in
Referring to FIG. 17, in this modi?cation a minimum
which case the wall 37 would be secured by suitable bolts
size ?otation unit 64 comprises a hollow metal or plastic
and a gasket to insure an air-tight construction. The skis
7 box ?lled with air or plastic foam, or it may consist of
3,096,530
a block of balsa, cork, or plastic foam secured to the
top of the ski by a fabric strap 65 having buckle 66; and
the strap may pass through a suitable aperture 67 located
in the ski and extending from edge to edge above the bot
tom of the ski.
,
Referring to FIG. 18,_ this is a modi?cation in which a
similar block 64 is secured by straps 68 which are car
and quickly attachable means for securing said ?otation
member to the top of the ski.
3. A water ski having an elongated body and an up
wardly turned front end, the said ski having its bottom
substantially plane and having its upper side provided
with a ?otation member only at its front end and having
foot engaging means on its upper side between the ends
of the ski in the proper location to support a skier, said ski
assuming a position diagonal to the water surface with
by wood screws 70 to the top of the ski.
front end projecting upward out of the water when
Any of the buoyant units mentioned may be stamped 10 its
supported on the foot of the skier, due to the downward
out of thin steel, brass, copper, plastic, Fiberglas, rub
pressure on the ski by the foot .of the skier at the foot
ber, or any suitable material.
engaging means behind the ?otation member, which
It will thus be observed that the present invention is
?otation member holds the front end of the ski upper
equally adaptable to existing skis, which may be equipped
most at this time with the front end of the ski out of the
with various types of ?otation units adapted to hold the 15 water in such position that the skier may start from a
forward end of the ski in an uppermost position.
still position slowly and gradually increasing speed until he
The size and length of the-members 14, 15 may vary
is skiing on top of the water.
according to the size of the ski and the weight of the user;
ried by the metal stirrups ‘69, which in turn are secured
4. A device for use in combination with a water ski to
simplify the use of the ski and provide desirable skiing
20
with a volume of approximately 231‘ cubic inches, or
characteristics particularly in starting and stopping, where
and one example of a water ski has a ?otation chamber
one gallon, displacing one gallon of water and having
sufficient flotation to hold the water skis in the position
of FIG. 1 when the user is wearing a life preserver jacket
as illustrated in FIG. 1.
in the ski comprises an elongated relatively narrow body
substantially ?at for the major portion of its length from
a rear end to adjacent a forward end, said forward end
being curved upwardly, said body having a bottom side
The buoyant chambers on the skis hold the forward end 25 and an upper side, and foot receiving means on said upper
of the skis in an uppermost position and enable the user
side between said rear and forward ends, said device com
to assume the position shown in FIG. 1, which is prac
prising a self-contained highly buoyant element positiona
tically the optimum position for take-off; and the user
ble only on the ski upper side in a location between the ski
may maintain this position without the idif?culty that is
forward end and the foot receiving means, means for
30
encountered with the skis of the prior art.
attaching said chamber to the ski, said ski when at-rest
The matter of the timing of the take-off becomes less
in Water and with a person applying a downward force at
critical with the present water skis because it is easier
said foot receiving means and rearwardly of said ele
to hold the skis in the take-off position; and the skis may
ment causing the ski rear end to submerge, the body of the
also be used as a buoy to aid in the support of the user
35 ski assuming an angle to the surface of the water and said
when he is in the water at a distance from the boat.
forward end projecting upwardly out of the water, the
As previously stated, they are also visible; and a lost
ski may be found more easily because the front end tends
to project upward, out of the water.
It will thus be observed that I have invented an im
proved ski construction which makes the take-off easier
for beginners and those not skilled in water skiing; but
the present skis are also advantageous to anyone, as they
make the take-off easier, they are more readily visible
when it is necessary to ?nd a lost ski; and one or both
skis may be used as a buoy for supporting the user in
the water in case it is necessary.
buoyancy provided by said element being such that the
ski forward end is prevented from submerging under the
Weight of the person applying said force to said foot receiv
ing means.
5. A device for use in combination with a water ski as
recited in claim 4 wherein said element is elongated in the
direction of elongation of the ski and having a ?at bottom
side which seats against said ski upper side rearwardly of
the curved forward end.
45
6. A device for use in combination with a water ski as
recited in claim 4 wherein said means for attaching said
element to the ski comprises a ?rst fastening member
which connects a forward end of said element to the ski
While I have illustrated a preferred embodiment of
my invention, many modi?cations may be made without
departing from the spirit of the invention, and I do not
and .a second fastening member which connects a rear end
wish to be limited to the precise details of construction
of the element to the ski, both of said members being de
set forth, but desire to avail myself of all changes within
tichable
whereby the element may be removed from the
the scope of the appended claims.
s 1.
‘Having thus described my invention, what I claim as
7. A device for use in combination with a water ski as
new and desire to secure by Letters Patent of the United
recited in claim 5 wherein said element bottom side has
55
States is:
portions which extend outwardly of the remainder of the
1. A water ski having an elongated body and an up
element to provide ?anges with which said attaching means
wardly turned front end, the said ski having its bottom
substantially plane and having its upper side provided
iiengageable to facilitate connection of the element. to the
with a ?otation member at its front end only and hav
8. A device for use in combination with a water ski as
s 1.
ing foot engaging means on its upper side between the 60 recited in claim 4 wherein said element has a width not
ends of the ski in the proper location to support a skier,
greater than the width of the ski whereby the chamber
said ski assuming a position diagonal to the water sur
does not extend beyond the ski and impair the travel of
face with its front end projecting upward out of the water
the
ski in the water.
when supported on the foot of the skier, due to the down
9. A device for use in combination with a water ski as
ward pressure on the ski by the foot of the skier at the 65 recited in claim 4 wherein the upward projection of said
foot engaging means behind the ?otation member, which
element from said ski upper side is less than the upward
holds the front end of the ski uppermost at this time with
projection of the upturned forward end of the ski where
the front end of the ski out of the water in such position
by the element does not interfere with the normal travel
that the skier may start from a still position slowly and
gradually increasing speed until he is skiing on top of the 70 of the ski through water when in use.
10. A device for use in combination with a water ski
water, and means for attaching said ?oation member to
to simplify the use of the ski and provide desirable skiing
the ski.
characteristics particularly in starting and stopping, Where
‘2. A water ski according to claim 1, wherein said ?o
in the ski comprises an elongated relatively narrow body
tation member comprises a shaped upper shell having an
attaching ?ange, a bottom wall attached to said ?ange, 75 substantially ?at for the major potion of its length from
3,096,530
8
a rear end to adjacent a forward end, said forward end
1,723,473
being upturned, said body having a bottom side and an
upper side, and foot receiving means on said upper side
between the rear and forward end of the ski, said device
1,758,289
1,793,905 _
1,869,186
1,918,508
comprising a highly buoyant element positionable on the
ski upper side in a location between the ski forward end
and the foot receiving means, means for attaching said
2,124,062
'
element to the ski, said ski when at-rest in water and with
a person applying a downward force at said foot receiv
2,740,972
2,938,220
ing means and rearwardly of said buoyant element causing
the body of the ski to assume an angle to the surface of 10
the water with said rear end submerged and said forward
end projecting upwardly out of the water, the buoyancy
provided by said element being such that the ski forward
end is held from submerging.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,104,441
Nelsen _______________ __ July 21, 1914
2,482,074
15
3,031,697
Erickson ______________ __ Aug. 6,
Loy _________________ __ May 13,
Chesnut ______________ __ Feb. 24,
Davidson _____________ __ July 26,
Wheeler ______________ __ July 18,
Grant ________________ __ July 19,
Stephens _____________ __. Sept. 13,
Taylor _______________ __ Apr. 10,
Puckett ______________ __ May 31,
Klein _________________ .. May 1,
1929
1930
1931
1932
1933
1938
1949
1956
1960
1962
FOREIGN PATENTS
909,421
515,386
1,126,789
Germany _____________ __ Apr. 15, 1954
Canada _______________ __ Aug. 9, 1955
France _______________ __ July 30, 1956
OTHER REFERENCES
A magazine called: “Boats,” volume 54, No. 7, page 3,
July 1957.
Документ
Категория
Без категории
Просмотров
0
Размер файла
732 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа