U.S. patent number 3,865,041 [Application Number 05/351,509] was granted by the patent office on 1975-02-11 for rotary platform vehicle passenger loading system.
This patent grant is currently assigned to Arrow Development Co., Inc.. Invention is credited to Karl W. Bacon.
United States Patent |
3,865,041 |
Bacon |
February 11, 1975 |
**Please see images for:
( Certificate of Correction ) ** |
ROTARY PLATFORM VEHICLE PASSENGER LOADING SYSTEM
Abstract
A central stationary platform is surrounded by a rotatable
annular platform and a vehicle guiding means surrounds at least a
portion of the outside circumference of the rotating platform.
Vehicles are guided into frictional engagement with an outside edge
of the rotating platform in a manner that there is no relative
motion between the vehicle and the rotating platform, thus
permitting loading and unloading of people therefrom. In one
embodiment, vehicles are boats and in another embodiment are
passenger cars riding on rails.
Inventors: |
Bacon; Karl W. (Mountain View,
CA) |
Assignee: |
Arrow Development Co., Inc.
(Mountain View, CA)
|
Family
ID: |
23381221 |
Appl.
No.: |
05/351,509 |
Filed: |
April 16, 1973 |
Current U.S.
Class: |
104/20; 104/18;
104/73; 250/289; 404/1 |
Current CPC
Class: |
B61K
1/00 (20130101); B61F 13/00 (20130101); B65G
51/01 (20130101); B61B 13/00 (20130101) |
Current International
Class: |
B61B
13/00 (20060101); B61F 13/00 (20060101); B61K
1/00 (20060101); B65G 51/01 (20060101); B65G
51/00 (20060101); B61k 001/00 () |
Field of
Search: |
;14/1 ;104/20,21,73
;198/167 ;214/42,58 ;272/29,48 ;404/1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Byers, Jr.; Nile C.
Attorney, Agent or Firm: Limbach, Limbach & Sutton
Claims
I claim:
1. A passenger loading station for passenger carrying vehicles,
comprising:
an annular passenger platform rotatable about a fixed axis and
having a resilient compressible bumper attached thereto around its
outside circumferential edge,
a fixed circular vehicle guide segment positioned around the
outside of a portion of the platform circumference and guide
portions leading toward and away from said circular guide segment,
and
means for urging said vehicles against said platform bumper in a
manner that the frictional engagement of the vehicle with the
bumper prevents relative movement therebetween when a vehicle is in
said circular guide segment.
2. A passenger loading station and vehicle, comprising:
a movable passenger platform having a bumper attached to one edge
thereof,
at least one passenger carrying vehicle,
a fixed segment cooperatively constructed with said vehicle to
guide said vehicle along the bumper carrying edge of said movable
passenger platform, and transition guide portions leading toward
and away from said segment, and
means as part of said vehicle and said guide segment for urging
said vehicle tightly against said bumper in a manner to provide
only frictional engagement therebetween for causing the platform
and vehicles within said segment to move without relative velocity
therebetween.
3. The passenger loading station of claim 2 which additionally
includes a motor as part of a passenger platform assembly for
moving the passenger platform at substantially a uniform speed.
4. A passenger loading station of claim 3 wherein said at least one
vehicle is a boat and said guide segment and transition guide
portions include a continuous water carrying trough with upright
sides for guiding the path of boats traveling therealong.
5. The passenger loading station of claim 4 wherein said boat
vehicle contain a roller means for cooperating with the side of the
water channel of the guide segment that is furthest removed from
the moving platform, the distance from the moving platform bumper
to said furthest removed channel edge and the dimensions of the
boat cooperating so that the boat tightly engages said bumper as
said rollers roll along said opposite sidewall of said water
channel.
6. The passenger loading station of claim 2 wherein said at least
one vehicle includes a source of motor power while the platform has
no source of motor power, whereby the movement of said vehicle in
said guide segment causes movement of said passenger platform
without relative velocity with said vehicle.
7. The passenger loading station of claim 2 wherein said bumper
includes an elongated strip of resilient material that normally has
a smooth outside surface that is depressed upon contact with said
vehicle within said guide segment.
8. A passenger loading station and cooperating vehicle,
comprising:
an annular passenger platform rotatable about a fixed axis and
having a resilient bumper attached to its outside circumferential
edge a first radius from the axis of rotation,
a fixed water channel segment extending in a circular path around
the outside of a portion of the platform circumference and water
channel portions leading toward and away from said circular
segment, said water channel segment including two sides with an
extreme side located a second radius from said axis, and
at least one passenger carrying boat having at least a portion of
one side inwardly curving with a radius of curvature substantially
equal to said first radius, said boat additionally having rollers
extending from an opposite side of said boat and pivotally mounted
thereon in a manner that the dimension between the extremity of
said wheels and said curved portion is slightly less than the
difference between said first and second radii, whereby said boat
firmly pushes against and compresses said bumper along the curved
side region of contact therewith.
9. The passenger loading station of claim 8 which additionally
comprises an inward extension within said water channel attached to
said water channel extreme side and positioned at an elevation for
supporting a weight of the boat under a loaded condition, whereby
the boat is stabilized against extreme tipping during passenger
loading and unloading.
10. The passenger loading station of claim 8 wherein said boat
includes at least one wheel pivotally mounted on the bottom thereof
for supporting the boat weight, and wherein said water channel
segment includes at least one track upon which the boat bottom
wheel rides when the boat is in the loading area, whereby the boat
is stabilized for passenger loading and unloading.
11. A passenger loading station and cooperating vehicle,
comprising:
an annular passenger platform rotatable about a fixed axis and
having a resilient bumper attached to its outside circumferential
edge a first radial distance from the axis of rotation, said
rotatable platform not having its own internal source of power,
a fixed pair of rails extending in a circular path segment around
the outside of a portion of the platform circumference and rail
portions leading toward and away from the circular rail segment,
said pair of rails in the circular segment having second and third
radial distances from said axis of rotation, said rails
additionally being substantially circular in cross-section, and
at least one self-powered passenger carrying rail car having a
plurality of load supporting wheels attached to the bottom thereof
rotatable about axes that are parallel to a plane of said pair of
rails for riding on the tops of said rails and having a plurality
of stabilizing wheels rotatable about axes substantially
perpendicular to said rail plane for riding on the inside surfaces
of said rails, said rail car additionally having a surface
positioned above said wheels for contacting said resilient bumper,
said first, second and third radial distances being positioned
relative to the bumper contacting surface of the car to provide
tight engagement of said bumper contacting surface with said bumper
when the car is in the passenger loading area.
12. A station for loading passengers into at least one vehicle,
comprising:
a platform in the shape of a circle held to be rotatable about an
axis at the center of the circle,
a resilient compressible bumper attached completely around the
outside circumference of said platform and having a cross-sectional
shape that is normally uniform therearound, and
means fixed with respect to said axis for guiding said vehicle in a
path segment that is a portion of a circle having a center of
curvature coincident with said axis and a radius such that when in
said path segment said vehicle is firmly urged against and
compresses a portion of said bumper contacted by said vehicle,
thereby to cause a vehicle traveling along said path segment to be
rotatably fixed to said platform.
13. The passenger loading station of claim 12 which additionally
includes a motor coupled to the passenger platform assembly for
moving the passenger platform at substantially a uniform speed.
14. A passenger loading station of claim 13 wherein said at least
one vehicle is a boat and said guiding means include a continuous
water carrying trough with upright sides for guiding the path of
boats traveling therealong.
15. The passenger loading station of claim 12 wherein said at least
one vehicle includes a source of motor power while the platform has
no source of motor power, whereby the movement of said vehicle in
said guiding path causes movement of said passenger platform
without relative velocity with said vehicle.
16. The passenger loading station of claim 15 wherein said guiding
path includes a pair of rails upon which said vehicle is adapted to
travel.
17. A passenger loading station and cooperating vehicle,
comprising:
an annular passenger platform rotatable about a fixed axis and
having a resilient bumper attached to its outside circumferential
edge a first radial distance from the axis of rotation, said
rotatable platform not having its own internal source of power,
a fixed pair of rails extending in a circular path segment around
the outside of a portion of the platform circumference, said
segment being a portion of a longer rail path, said pair of rails
in the circular segment having second and third radii of curvature
with respect to said axis of rotation, and
at least one self-powered passenger carrying rail car having a
plurality of load supporting wheels attached to the bottom thereof
for riding on the tops of said rails and having means to maintain
said wheels on the rails against lateral forces on the vehicle,
said rail car additionally having a surface positioned above said
wheels for contacting said resilient bumper, said first, second and
third radial distances being positioned relative to the bumper
contacting surface of the car to provide tight engagement of said
bumper contacting surface with said bumper when the car is in said
circular path segment.
Description
BACKGROUND OF THE INVENTION
This invention relates generally to a vehicle passenger loading
arrangement and more particularly relates to a structure permitting
passenger loading and unloading without having to stop the
vehicles.
U.S. Pat. No. 3,339,494 -- Lauber (1967) describes a rotating
railroad station loading platform wherein a train track is
positioned around a portion of the outside circumference of a
rotating platform and adjacent thereto. The rotating platform
surrounds a stationary center platform to which passengers have
access by a tunnel or an elevated walkway. The trains are disclosed
to travel at the same speed as the outside circumferential surface
of the rotating platform. Passengers are then accelerated to the
speed of the train as they walk outward from the stationary
platform to moving train cars.
The difficulty with the aforementioned Lauber patent is that no
positive means is provided for assuring that the train cars are
moving at exactly the same speed as the outside circumference of
the rotating platform. As a result, there is a possibility of
passenger inconvenience and injury if the speeds of the rotating
platform outside circumference and adjoining train cars are not
exactly the same. U.S. Pat. Nos. 368,420, 474,657 and 780,268
suggest mechanically connecting vehicles in the loading area to a
rotating platform but their systems for accomplishing this are
awkward and complex.
Accordingly, it is a primary object of the present invention to
provide a rotating platform assembly that assures that adjacent
vehicles are traveling at the same speed as the outside
circumference of the rotating platform with a simple mechanism that
permits smooth engagement and disengagement of the vehicle with the
rotating platform.
It is a more general object of the present invention to provide a
vehicle guiding assembly about a portion of an outside
circumference of a rotating passenger loading platform that permits
passenger loading and unloading with increased comfort and
safety.
SUMMARY OF THE INVENTION
These and additional objects are accomplished by the various
aspects of the present invention wherein a segment along the length
of a vehicle guide that is adjacent an outer circumferential
segment of a rotating platform and the outer circumferential edge
of the rotating platform itself are provided with cooperating means
for positively holding a vehicle positioned in the guide segment to
the rotating platform outside edge by friction alone to prevent
motion therebetween. The positive attachment of the vehicle to the
rotating platform outside edge assures convenient and safe
passenger loading and unloading therefrom without the need for an
expensive and fallible electronic control system to maintain the
relative speed therebetween at zero.
Although a positive mechanical latching system may be provided
between the rotating platform and the vehicles, fabrication and
operating problems to effect a smooth engagement and disengagement
of the vehicles from the rotating platform make it preferable to
use a frictional engagement. A frictional element such as an
extruded rubber ring is provided around the outside circumference
of the loading platform. The vehicle guide means urges the vehicle
firmly against the loading platform in the loading area to
establish frictional engagement therewith. No other positive
mechanical latching mechanism is required. By using only a
frictional engagement, the mechanism is simple, reliable and has a
further advantage of holding the vehicle firmly against the
rotating platform outside circumference. The vehicle thus does not
move back and forth with respect to the loading platform in the
loading area and there is no gap for a passenger to step over when
moving between the vehicle and the rotating platform. Engagement
and disengagement of the vehicle to the loading platform as it
enters and leaves the loading area is also very smooth with the
frictional engagement system of the present invention. The result
is a convenient, safe and mechanically troublefree passenger
loading arrangement which can handle very large numbers of
passengers per unit of time.
In one specific embodiment of the present invention, the vehicles
are boats and the guide means is a water trough with a loading
segment extending partially around the outer circumference of the
rotating platform. The radially extreme wall of the water trough is
reinforced and positioned a distance from the outer circumferential
edge of the rotating platform so that a boat is squeezed tightly
therebetween when it moves into the loading area. Horizontally
extending wheels are provided on the radially extreme edge of the
boat to contact this outside water channel wall and ride
therealong. The radially inside edge of the boat in the loading
area thus contacts the outside circumference of the rotating
platform. The rotating platform edge is preferably provided with a
ring of soft, resilient material that is compressed when the boat
is pressed thereagainst, thereby assuring positive frictional
engagement therewith. An appropriate motor is provided for the
rotating passenger platform at a constant angular velocity which
thereby moves boats through the loading area as well.
In another embodiment of the present invention, the vehicle guiding
means is a track arrangement which carries the weight of and guides
the motion of a vehicle through the loading area around a portion
of the circumference of the rotating platform. The track portion of
the loading area urges the vehicle against a resilient material
ring attached to the outside circumference of the rotating platform
to establish a frictional engagement therebetween. In a specific
example described hereinafter, a number of vehicles are linked
together in a chain with one or more vehicles in a given coupled
unit having a self-contained electric motor. The rotating platform
in this embodiment need not be powered but is rotated by the cars
themselves.
Many other types of vehicles and associated guide elements may also
be utilized with the platform engagement technique of this
invention, such as automobiles riding on a roadway and guided by a
single guide rail, a suspended vehicle and overhead track
structure, etc.
Additional objects, advantages and features of the present
invention will become apparent from the following description of
its preferred embodiments which should be taken in conjunction with
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic plan view of an overall rotating platform
passenger loading system embodiment according to the present
invention;
FIG. 2 is a sectional view of the rotating platform and a vehicle
taken across section 2--2 of FIG. 1;
FIG. 2A is an enlarged view of an element of FIG. 2;
FIG. 3 illustrates a frictional engagement between the vehicle and
the rotating platform of FIG. 2 taken across section 3--3
thereof;
FIG. 4 illustrates a variation in the embodiment of FIGS. 1-3 in
the same general view thereof as FIG. 2;
FIG. 5 illustrates another embodiment of the present invention
wherein a track supported and guided vehicle is employed;
FIG. 5A is an enlarged view of an element of FIG. 5; and
FIG. 6 shows the wheel arrangement of the track supported vehicle
of FIG. 5 taken across section 6--6 thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring initially to FIG. 1, a rotating passenger platform 11
surrounds a stationary platform 13. The passengers walk to and from
the stationary platform 13 over a bridge 15 having stairs at each
end. A passenger loading vehicle guide segment 17 surrounds the
outer circumference of the rotating platform 11 in a circular arc
between positions 17a and 17b. In the embodiment of FIG. 1, the
vehicle guide 17 is a trough for containing a water flow in which
boats, such as the boat 19, float. A vehicle guide water trough
portion 21 leads into the loading segment 17 and a vehicle guiding
water trough 23 leads away from the loading segment 17. The water
trough segments 17, 21 and 23 are portions of a continuous loop
amusement ride, in a specific application of the various aspects of
the present invention, in which paying passengers are loaded into
and out of the boats for the ride from the loading platform 11. The
rotary platform 11 has the advantage that a passenger's linear
velocity increases gradually as he walks radially outward on the
platform 11 toward a boat. Such a rotating platform can handle a
very large number of passengers per unit time with a reduced number
of attendants as compared with conventional techniques where the
vehicles such as boats are stopped at a stationary loading
dock.
Referring to FIGS. 1 and 2, the rotating loading platform 11 has a
circular structural beam 25 on its underside which in turn is
supported against gravity by a plurality of rollers such as the
roller 27 that is supported by a mechanism 29. A motor source 31 of
a convenient type such as an electric motor rotatably drives a
driving wheel 33 which frictionally engages the inside surface of
the beam 25 to rotate the platform 11 at substantially a constant
angular velocity about a center of rotation 35.
The outside circumference of the rotating platform 11 has fixedly
attached thereto a bumper 37 for contacting the boats such as the
boat 19 in the loading area of the boat guiding water trough
segment 17. The bumper 37 is attached as a ring complete around the
extreme outside of the rotating platform 11 at a fixed radius from
the center of rotation 35 by an annular attaching element 39. A
radially inward wall 41 of the water trough segment 17 extends in
the loading area a fixed radius from the center of rotation 35,
that radius being less than the radial distance of the bumper 37
from the center of rotation 35. The bumper 3 thus extends outward
over water 43 within the trough 17 of the loading segment. A
radially outward wall 45 also has a center of curvature in the
loading vehicle guide segment 17 at the axis 35. Each of the boats
is substantially identical in construction as illustrated with the
representative boat 19 in FIGS. 2 and 3. A pair of wheels 47 and 49
on the radially outward side of the boat 19 intermittently contacts
one wall of the water trough throughout the ride so that the boat
follows the path of the water trough. A pair of wheels 51 and 53
are provided on the opposite side of the boat 19 for intermittently
contacting the opposite wall of the water trough to serve a boat
guiding function throughout the ride. Each of the guide wheels 47,
49, 51 and 53 are rotatably attached to the boat body to rotate
about a vertical axis with respect thereto.
In the region of the boat loading segment 17 of the boat guiding
trough, the inward wheels 51 and 53 serve no function in guiding
the boat, since, as shown in FIG. 2, they ride under the bumper 37.
That side of the boat 19 rides against the bumper 37. The opposite
set of wheels 47 and 49, however, ride against the extreme outer
edge 45 of the water trough in the loading segment 17. The
differences in radii of the extreme edge of the bumper 37 and the
curvature of the outer wall 45 is made to be slightly less than the
distance between a bumper contacting surface 55 of the boat 19 and
the outer periphery of the guiding wheels 47 and 49. The result is
that the boat 19 is urged tightly against the bumper 37 by the
wheels 47 and 49 which are pressing against the outer circular wall
45. Therefore, the outer circular wall 45 is structurally
reinforced in an appropriate manner in order to withstand these
forces as the boats are pressed thereagainst in the passenger
loading trough segment 17.
FIG. 2A shows an enlarged cross-sectional view of the bumper 37
showing a hollow region 37a. As the boats such as the boat 19 are
pressed against the bumper 37, the opening 37a collapses and a
strong frictional bond between the boat and the bumper 37 occurs.
The bumper 37 is preferably made of a resilient material, such as
an extruded rubber, so that the boat surface 55 may be pushed
thereinto by the force of its outer wheels 47 and 49 riding along
the fixed outer circular trough wall 45. In order to increase the
frictional attachment between the boat and the bumper 37, the boat
19 has an inwardly curving side section forming its contacting
surface 55. The contacting surface 55 has a radius of curvature
between its extreme portions 55a and 55b substantially the same as
that of the bumper 37, as shown in FIG. 3. The surface 55 thus
pushes against the bumper 37 and compresses it in order to form a
strong frictional bond therewith. The boat 19, as well as any other
boats in the loading water through segment 17, are driven by the
rotating platform 11.
In the loading region, the water 43 is also moving in the direction
of the travel of the boats and helps carry them along. The
frictional engagement of the boats with the rotating platform 11,
however, assures that the boats have no relative speed with respect
to the platform 11. In the rest of the ride, such as in the
incoming and outgoing water trough segments 21 and 23, the moving
water is the sole source of boat motive power. Alternatively, the
boats may be self propelled and/or may be linked together. In any
case, the boats are urged against the platform bumper for
engagement therewith in the loading area.
It will be noted that the frictional engagement technique for a
boat loading area as illustrated in FIGS. 1-3 has the advantage
that when a boat reaches the point 17b where the loading area
begins, it smoothly engages the bumper 37. Similarly, when the boat
is about to leave the loading area at the point 17a, the boat
smoothly disengages from the bumper 37. Abrupt passenger jarring
motions of the boats are thus avoided as well as preventing sudden
excessive loads to the motor power of the rotating platform 11.
Another advantage of the bumper/boat engagement technique
illustrated in FIGS. 1-3 is that the frictional engagement between
the boat surface 55 and the bumper 37 also supports the boat
vertically when passengers are getting into and out of the boat.
Such stability is a great convenience to passengers. On the
opposite side of the boat, wheels 47 and 49 may not provide the
necessary frictional force to prevent tipping of the boat downward
into the water as the passenger load increases suddenly. Therefore,
a supporting ledge 61 is provided in the loading trough segment 17
firmly attached to the outer wall 45 thereof at a position to be
below the top surface of the water 43. When the load in the boat 19
increases suddenly, the boat tips until its wheels 47 and 49 are
depressed into the water and contact the supporting protrusion 61.
The combination of the firm rest 61 for the boat within the loading
area and its tight frictional engagement against the bumper 37
gives the boat 19 very good stability against dropping vertically
and rolling in the face changing passenger loads during loading and
unloading thereof.
Referring to FIG. 4, a modification of the embodiment of FIGS. 1-3
is illustrated in the form of a modified version of the FIG. 2
trough and boat. A boat 63 contains, in addition to the structure
described above with respect to the boat 19, four vertical
supporting wheels in the bottom thereof, including wheels 65 and 67
shown in the view of FIG. 4. These four wheels are held to rotate
about a fixed horizontal axis for supporting the boat 63 in the
loading area against vertical and rolling movement as people get
into and out of the boat. A pair of tracks 69 and 71 as shown in
FIG. 4 are added, in this variation, to the water trough loading
segment 17 of FIG. 1. Everywhere else in the ride the boat 63
floats on the water, but in the loading area, the tracks 69 and 71
are provided to hold the boat firmly against rolling in the water
as people get into and out of the boat from the loading platform
11.
FIGS. 5, 5A and 6 show another embodiment of the passagenger
loading station as used with a train of rail riding cars that are
linked together and self-powered. A rotating platform 11' is
supported in a similar manner to the boat embodiment described
above, except that the rotary platform is not powered. There is no
motor directly operating on the passenger platform 11' but rather
it is rotated from the motive power in the rail cars themselves.
Each of the cars includes a passenger compartment 73 which holds
several people. The passenger compartment 73 is supported by a post
assembly 75 on wheels which ride on a pair of tracks 77 and 79.
Each of the tracks 79 and 77 is circular in cross-section as shown
in FIG. 5, and further is curved in a horizontal plane to have a
constant radius about an axis of rotation of the rotating platform,
the circular rail segment forming the passenger loading segment.
Rails are connected to either end of the curved passenger loading
segment for leading cars into and out of the passenger loading
segment. A bumper 81 is provided on the outside circumference of
the loading platform 11' and has a constant radius with respect to
the axis of rotation of the platform 11' that lies intermediate of
the radii of the two tracks 77 and 79.
Each of the rail cars is supported by four wheels 83, 85, 87 and
89, each of these wheels not requiring a flange. The wheels 83-89
are fixed to each of the rail cars for rotation about a horizontal
axis that is parallel to the plane of the tracks 77 and 79 which is
also substantially parallel with the top surface of the passenger
loading platform 11'. The wheels 83-89 are carried by axle
assembles 91 and 93, these axle assemblies being pinned to a body
support assembly 95 for rotation therewith when the car travels
over curved track sections. The post 75 which holds the passenger
compartment 73 is carried by the main body support member 95.
In a specific example, about one out of ten cars in a linked train
of cars has its own power source. An electric motor 97 is shown in
FIG. 5 with operable coupling to one pair of wheels. The view of
FIG. 6 does not show this motor and represents an axle and wheel
assembly which is substantially common to both those cars which are
powered and those which are not.
Since the supporting wheels 83-89 are not flanged and especially
since the rails are circular in cross-section, some means are
required to hold the train cars on the tracks. Each of the wheels
83-89 has associated therewith a pair of guide wheels which are
held to the car in a manner to rotate about an axis that is
substantially vertical; that is, to rotate about an axis that is
orthogonal to the axis of rotation of the load supporting wheels.
For instance, the load supporting wheel 83 has associated therewith
such an adjacent pair of guide wheels 99 and 101. The guide wheels
99 and 101 are placed on either side of the wheel 83 along the
track 77 and on the inside surface thereof.
The bumper 81 is of a resilient material and is provided with an
opening 81a in its middle as shown in FIG. 5A. The radii of the
track 77 and 79 with respect to the axis of rotation of the
passenger platform 11' are adjusted so that the post 75 of each car
compresses the resilient bumper 81. The inside edge of the post 75
that contacts the bumper 81 thus travels in a path about the rotary
platform axis of rotation that has a radius slightly less than the
outside radius of the bumper 81 in a non-compressed state. The
support post 75 of each rail car thus frictionally engages the
bumper 81 and additionally temporarily forms a depression therein
for tight engagement therewith. As the car leaves the loading area
and disengages with the platform, the resilient nature of the
bumper eliminates the groove. In a given train situation, there
will be a number of posts 75 that contact the bumper 81 at any one
time at different positions around the bumper. Power is thus
transferred from a plurality of coupled rail cars to the rotary
platform 11'. The frictional engaging force at each car required
against the bumper in such a multiple car train situation is thus
reduced.
Many of the aspects of the present invention can also be applied to
a passenger platform that travels linearly rather than in a
circular path. Vehicles may be frictionally coupled to a bumper on
the edge of a platform moving in a straight line just as they are
to a bumper on the outside of a rotary platform. However, the
rotary platform is preferred because of its capability of handling
more passengers per unit of time and additionally it is safer and
more convenient.
Although a few specific examples of the various aspects of the
present invention have been described in detail above, it will be
understood that the invention is entitled to protection within the
full scope of the appended claims.
* * * * *