U.S. patent number 3,645,348 [Application Number 04/828,968] was granted by the patent office on 1972-02-29 for power ski.
This patent grant is currently assigned to Royce Hill Husted. Invention is credited to Richard F. Thompson.
United States Patent |
3,645,348 |
Thompson |
February 29, 1972 |
POWER SKI
Abstract
This invention relates to a ski equipped with mechanical
propelling means to propel the ski over snow-covered surface; the
under surface of the ski slides over the snow at all times, and the
mechanical propelling means may be engaged and disengaged from the
snow surface.
Inventors: |
Thompson; Richard F. (Glen
Ellyn, IL) |
Assignee: |
Husted; Royce Hill (Glenn
Ellyn, IL)
|
Family
ID: |
25253184 |
Appl.
No.: |
04/828,968 |
Filed: |
May 29, 1969 |
Current U.S.
Class: |
180/181;
416/63 |
Current CPC
Class: |
A63C
5/085 (20130101) |
Current International
Class: |
A63C
5/08 (20060101); A63C 5/00 (20060101); B62m
027/00 () |
Field of
Search: |
;180/3-6,66,1G
;280/11.11EE,11.11E |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
530,131 |
|
Sep 1921 |
|
FR |
|
1,390,198 |
|
Jan 1965 |
|
FR |
|
835,558 |
|
Apr 1952 |
|
DT |
|
513,031 |
|
Dec 1937 |
|
GB |
|
Primary Examiner: Friaglia; Leo
Claims
I claim:
1. A power-driven ski comprising, in combination:
an anterior elongated sliding ski surface portion for slidingly
contacting the snow,
a posterior toothed endless belt portion for driving said ski,
means for attaching a ski boot to said sliding surface portion so
that at least part of the skier's weight is carried by said sliding
surface portion,
motor means carried by a skier for powering said endless belt
portion, said motor means being flexibly coupled to said endless
belt portion,
a ski pole,
means carried by said ski pole for controlling the speed of said
endless belt.
2. A power-driven ski comprising, in combination:
an anterior elongated sliding ski surface portion for slidingly
contacting the snow,
a posterior toothed endless belt portion for driving said ski,
means for attaching a ski boot to said sliding surface portion so
that at least part of the skier's weight is carried by said sliding
surface portion,
motor means for powering said endless belt portion,
said motor means being coupled to said endless belt portion,
a ski pole,
and means carried by said ski pole for controlling the speed of
said endless belt.
Description
The present invention relates to new and useful improvements is
snow skis, and has for its primary purpose propelling means for
sliding skis over snow.
The power ski according to the present invention can be used on one
of skier's legs only while other leg is equipped with ordinary ski,
or skier can use a pair of power skis--one on each leg.
DESCRIPTION OF PRIOR ART
The most pertinent art appears to be U.S. Pat. No. 2,625,229 by S.
Van Voorhees, composed of conventional skis, each formed with the
usual surface for sliding over snow-covered terrain and this
surface is used in traveling downwardly over inclined surfaces in
exactly the same manner as conventional skis are used. In all
embodiments of S. Van Voorhees invention, the sliding ski surface
of ski is displaced from its operative position, for replacement by
a driving or propelling surface whenever the terrain is such, that
the skier can no longer slide under the action of gravity.
In all embodiments of the present invention, there's an important
distinction; namely, the sliding surface of ski is always in
contact with the snow, supporting at all times, part or all of
skier's weight with relatively low resistance to forward motion
over snow as is typical with all skis and the driving or propelling
means can be engaged and disengaged from snow, and the weight of
the skier is never fully supported on the driving or propelling
It is also an object of the present invention to provide means to
engage the drive means with snow in order that the propelling means
would become effective, or to disengage the propelling means so
that ski can slide freely on snow as an ordinary ski does.
It is also an object of the present invention to provide a remote
hand hand control to control the engagement of the propelling means
with snow covered surface.
It is another object of the present invention to include a power
source and power transitional means to connect the power source to
the propelling means. Such power source can be any of the commonly
used, such a a small internal combustion engine, and electric
motor, preferably equipped with nickel cadmium rechargeable
accumulators or other compact electric storage cells.
It is a further object of the present invention to provide hand
remote control for the output of the power source.
Other objects reside in the details of construction and operation
as more fully herein after described and claimed, reference being
had to accompanying drawing forming part hereof, wherein like
numerals refer to like parts throughout, and in which:
FIG. 1 is a view showing a skier equipped with the first embodiment
of the invention in which the motive power is carried fastened to
the skier's back, and the power is transmitted to the belt through
a flexible shaft and a right-angle gear box;
FIG. 2 is top plan view of the power ski of first embodiment;
FIG. 3 shows a view of an arrangement by which a rotary power
source can be attached to two power skis simultaneously;
FIG. 4 shows a side view of an arrangement by which single control
handle assembly can control simultaneously to power skis;
FIG. 5 shows a front view of an arrangement by which single control
handle assembly can control simultaneously to power skis, and
FIG. 6 shows a view of a hydrostatic power-transmitting connection
between power source and power ski.
Referring now to the drawings, FIG. 1 illustrates a skier equipped
with one power driven ski 7, which comprises a body member 8 with
an anterior, elongated sliding under surface 8a, including a
conventional attaching mechanism to attach the ski to a human foot
comprising a handle 1 which is pivoted on a shaft 3. Shaft 3
connects an attaching mechanism base 4 to the handle 1 so that it
can pivot relatively to the attaching mechanism base 4. A spring 5
is connected by the shaft 2 to handle 1. Hooks 6 are attached to
the ski body 8 and support the spring 5 downwardly, for supporting
and binding a boot 12 of the skier to ski 8. At the rear end of the
ski a U shaped bracket 14 is fastened to the ski by four rivets 16
and carrier a shaft 18. A subassemblies's frame 20 contains a
hollow sleeve 22 through which the shaft 18 passes, therefore the
frame 20 can pivot around the shaft 18.
A bracket 24 is connected to the ski body 8 by two rivets 26 and
supports one end of an outer shell 28 of flexible cable 30, which
at one end thereof is connected to a crossmember 32 of the
subassembly's frame 20.
The other end of the outer shell 28 is connected to a handle
bracket 34, an at this same end the flexible cable is connected to
a control handle 36. A shaft 79 supported in the handle bracket 34
on which handle 36 is pivotally mounted. A screw 72 is used to
fasten the handle bracket 34 to pole 71. When the handle 36 is
depressed it causes the cable 30 to pull the frame member 32
upwards raising the frame 20. This will in turn raise a posterior
endless belt 38 from contact with the snow.
A similar type of flexible cable controls a carburetor 42 opening
of an engine 44, and thereby controls the power generation of the
engine 44. The engine's output shaft is power transmittingly
connected to a flexible shaft 45. Said flexible shaft is covered by
a protective cover 48. The other end of the flexible shaft is power
transmittingly connected to an input shaft of a right-angle gear
box 50. The output shaft of the right-angle gear box is power
transmittingly connected to a shaft 52 which carries a toothed
pulley 54, and is power transmittingly connected to the said pulley
54. The shaft 52 is rotatably supported by the frame 20. The belt
38 is supported on the toothed pulley 54 and teeth 56 it contains
mesh with the pulley's teeth to form a good power transmitting
connection between pulley 54 and the belt 38. Teeth 58 on the outer
side of belt 38 serve to engage the snow-covered surface. The belt
38 is also supported by an idler, a pulley 60 which is mounted on a
shaft 62 which is supported by the frame 20 and free to rotate with
respect to the frame 20.
OPERATION
Skier fastens his boot 12 to ski 8 in an ordinary manner by the
ordinary mechanism which components are indicated by numerals 1, 2,
3, 4, 5 and 6, puts an engine 44 on his back, and grabs poles 71 in
his hands.
He pulls the handle 36 to disengage the belt 38 from snow and
permits idling He now raises the engine 44 power output by pressing
the handle 64, and he estimates the engine's 44 adequate power, he
releases the handle 36 slowly, bringing the belt 38 into engagement
with snow. These actions are similar in their nature to the
procedures of bringing a motorcycle into movement.
Once forward movement is initiated the skier can vary speeds by
controlling engine power output by pressing or depressing the
handle 64. If the skier prefers to stop or freely glide downhill he
can disengage the belt 38 from the snow by depressing the handle
36.
FIG. 3 shows an arrangement by which two skis according to first,
second or third embodiment can simultaneously be driven by one
rotary power source. The engine 44 has an output shaft 300 which
carries a gear 301 which is in mesh with two identical gears 302.
The gears 302 each is mounted and connected to rigid shaft section
303. The rigid shaft ends each is connected to the end of the
flexible shafts 46.
FIG. 4 and FIG. 5 show an arrangement by which two skis 7 according
to the first embodiment can be controlled for the elevation of the
subassembly 20 carrying the mechanical propelling means by a single
handle. A handle 64a contains two seats for ends of flexible cable
30 and handle bracket contains two holes 401 through which cable 30
can pass but outer shell 28 cannot pass.
FIG. 6 shows a hydrostatic drive line replacing the flexible cable
arrangement for transmitting power source power to mechanical
propelling means. The engine 44 drives a hydrostatic pump 500 which
sends pressurized fluid through flexible hose 501 to hydrostatic
motor 502 which rotates the shaft 52. Flexible hose 503 serves to
return the unpressurized fluid to the pump 500. A control valve 504
regulates the output of the hydrostatic pump 500, and this valve is
adjusted by the handle 505 which is mounted on shaft 506.
While this invention has been described and illustrated in
connection with specific embodiments it is of course understood
that various changes may be made in the form, details, arrangement
and proportions of the various parts without departing from the
scope of may invention.
* * * * *