WO2012130598A1 - Three-wheeled coaster - Google Patents

Three-wheeled coaster Download PDF

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Publication number
WO2012130598A1
WO2012130598A1 PCT/EP2012/054309 EP2012054309W WO2012130598A1 WO 2012130598 A1 WO2012130598 A1 WO 2012130598A1 EP 2012054309 W EP2012054309 W EP 2012054309W WO 2012130598 A1 WO2012130598 A1 WO 2012130598A1
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WO
WIPO (PCT)
Prior art keywords
front wheel
platform
rear wheels
coaster
axis
Prior art date
Application number
PCT/EP2012/054309
Other languages
French (fr)
Inventor
Raino SINISALU
Original Assignee
Raybike OÜ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Raybike OÜ filed Critical Raybike OÜ
Publication of WO2012130598A1 publication Critical patent/WO2012130598A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/002—Bicycles without a seat, i.e. the rider operating the vehicle in a standing position, e.g. non-motorized scooters; non-motorized scooters with skis or runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K9/00—Children's cycles
    • B62K9/02—Tricycles

Definitions

  • Present invention relates to a three-wheeled coaster, specially a three-wheeled coaster having a steering bar.
  • the rear wheels are placed close to the “tips” of the two equal sides of the triangular platform and those rear wheels are coaxial.
  • Third wheel or front wheel (steerable wheel) is located at the third tip of the platform.
  • the front wheel is pivotable around a steering axle, which is at angle of 45 degrees relative to the level of the platform.
  • Pivoting of the wheel is effected by means of a steering bar, which by one of its ends is attached to the bracket holding the steerable wheel, and said bracket is pivotable together with the front wheel around a steering axle.
  • the steering bar For turning the coaster the steering bar must be tilted to the left or to the right, as a result of which the front wheel is pivoted around its steering axle.
  • the steering bar is connected to the bracket holding the front wheel by means of an articulated joint so that the coaster can be pulled behind the user.
  • the present invention provides a coaster, enabling the user to generate forward movement by shifting the centre of the gravity of user’s body while resting on the coaster and to keep his/her balance with the help of the steering bar and at the same time use the latter for steering the coaster.
  • a three-wheeled coaster comprising a platform having a support surface for the user’s feet and where two coaxial rear wheels and one front or steerable wheel are attached to the platform, whereby front wheel is pivotable relative to the platform with the steering bar and the steering axle of the steerable wheel is inclined relative to the plane of the platform.
  • the rear wheels are attached to the platform relative to the front steerable wheel such that the centre of the contact surface of the front wheel on the support surface of said wheel is situated on the vertex of the imaginary isosceles triangle, and the corresponding sides of said imaginary isosceles triangle coming from said vertex pass through the corresponding centres of the contact surfaces of the rear wheels on the support surface.
  • angle of the vertex of said isosceles triangle is in the range of 44 to 71 degrees.
  • the steering axle of the pivotable front wheel has an inclination relative to the horizontal level of the platform in its longitudinal direction in the range between 40 and 60 degrees.
  • the steering bar for pivoting the front wheel is rigidly attached to the steering axle (pin) of the front wheel.
  • the rear edge of the platform comprises a curved cut so that in the middle part of said rear edge said cut is positioned relative to the common imaginary axis through the rear wheels on the side of the front wheel or at least in the middle part of the rear edge said cut extends to the area between common axis through the rear wheels and the axis of the front wheel.
  • axles of rotation of all three wheels are placed above the support surface for the user on the platform.
  • the distance between the common axis through the rear wheels and the axis of the front wheel is equal or greater than the distance between the rear wheels.
  • the length of the platform is at least 2/3 of the distance between the common axis through the rear wheels and the axis of the front wheel when the front wheel is in the straight position.
  • the steering bar is placed at the distance behind the front wheel which makes up to 1/3 of the distance between the common axis through the rear wheels and the axis of the front wheel.
  • the ratio between the length and the width of the platform of the coaster is preferably in the range of 3/4 to 4/5.
  • the distance between rear wheels is 80% to 115% from the distance between the common imaginary axis through the rear wheels and the axis of the front wheel.
  • the lateral edges of the platform are slightly outwardly curved such that at least part of said lateral edges extend beyond the corresponding imaginary lines through the centre of the contact surface of the front wheel and the centres of the contact surfaces of the rear wheels on the support surface.
  • the support surface for the user’s feet on the platform is provided with the friction cover to prevent slippage of the user.
  • the trail of the pivotable front wheel is up to 10 mm.
  • the fore-run of the pivotable front wheel is up to 10 mm.
  • Figure 1 depicts an axonometric front view of the coaster according to the invention
  • Figure 2 depicts an axonometric side view of the coaster according to the invention
  • Figure 3 depicts a top view of the coaster according to the invention
  • Figure 4 depicts a bottom view of the coaster according to the invention
  • Figure 5 depicts a bottom view of the coaster of the invention showing the distances between the elements of the coaster
  • Figure 6 depicts schematically the inclination angle of the steering axle of the front wheel
  • Figures 7 and 8 depict schematically the trail and the fore-run of the front wheel accordingly.
  • the coaster 1 of the invention includes platform 10 having on the top side of the platform a support surface 15 for the feet of the user.
  • the platform 10 has two coaxial rear wheels 20 attached to it. Also the front part of the platform 10 includes one front wheel 35 (steerable wheel) having an inclined steering axle 30 relative to the platform and said front wheel is pivotable around said steering axle by the means of steering bar 25.
  • front wheel 35 steererable wheel
  • said front wheel is pivotable around said steering axle by the means of steering bar 25.
  • the steering bar 25 is rigidly attached to the steering axle 30 of the front wheel 35, i.e. the steering bar 25 is pivotable around the steering axle 30 only together with the front wheel 35.
  • the rear edge 40 of the platform 10 comprises a curved cut 45. At least in the middle part of said rear edge 40 said cut 45 extends to the area between common axis T 1 through the rear wheels 20 and the axis T 2 of the front wheel 35; see Figure 5.
  • This cut enables user to rest on the support surface 15 of the platform 10 in front of the axis of the rear T 1 wheels 20, i.e. on the side of the front wheel 35 in relation of said axis.
  • the front or steerable wheel 35 is located in front of the platform 10 and not under thereof.
  • Rear wheels 20 are attached to the platform 10 relative to the front wheel 35 such that the centre of the contact surface of the front wheel 35 on the support surface of said wheel 35 is situated on the vertex of the imaginary isosceles triangle, and the corresponding sides of said imaginary isosceles triangle coming from said vertex pass through the corresponding centres of the contact surfaces of the rear wheels 20 on said support surface.
  • angle ⁇ of the vertex of said isosceles triangle is in the range of 44 to 71 degrees; see Figure 5.
  • axles of rotation of all wheels 20, 35 lie above the user’s support surface 15 on upper side of the platform 10.
  • the distance A between the axis T 2 of the front wheel 35 and the common axis T 1 through the rear wheels 20 is greater than the distance B between rear wheels 20.
  • the ratio between the length L and width W of the platform 10 is about 4/5. Preferably this ratio is in the range between 3/4 and 4/5.
  • the distance B between rear wheels 20 constitutes 80% to 115% from the distance A between the common imaginary axis T 1 through the rear wheels 20 and the axis T 2 of the front wheel 35.
  • the steering bar 25 is placed at the distance behind the front wheel 35, which makes up to 1/3 of the distance A between the common axis T 1 through the rear wheels 20 and the axis T 2 of the front wheel 35.
  • the support surface 15 of the platform 10 is provided with friction cover (not shown).
  • the maximum trail e of the pivotable front wheel 35 can be up to 10 mm; Figure 7.
  • the maximum fore-run e of the pivotable front wheel 35 can be up to 10 mm; Figure 8.
  • the value of inclination angle ß of the steering axle 30 of the pivotable front wheel 35 relative to the horizontal level is preferably 45 degrees.
  • said inclination angle ß can be in the range from 40 to 60 degrees.
  • the lateral edges 50 of the platform 10 of the coaster 1 are slightly outwardly curved (convex) such that at least part of said lateral edges 50 extend beyond the imaginary lines through the centre of the contact surface of the front wheel 35 and the respective centres of the contact surfaces of the rear wheels 20 on the support surface.
  • Three-wheeled coaster of the invention can be used for travelling in several different ways.
  • the coaster can be used as kick-scooter and use the steering bar for steering.
  • both feet of the user are on the platform and while holding a steering bar with one or with both hands, the user shifts the centre of gravity of his/her body relative to the platform while standing on a platform (and pivots the steerable wheel) and generating thus forwarding force for driving coaster on the support surface forward.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

Present invention relates to a three -wheeled coaster (1), comprising a platform (10) with a support surface (15) for the user's feet and two coaxial rear wheels (20) and one front wheel (35) attached to the platform (10), said front wheel (35) is pivotable with the steering bar (25) relative to the platform (10) and the steering axle (30) of the steerable wheel (35) is inclined relative to the platform (10). The rear wheels (20) are attached to the platform (10) relative to the front wheel (35) so that the centre of the contact surface of the front wheel (35) on the support surface is situated on the vertex of an imaginary isosceles triangle and the corresponding sides of said triangle from that vertex pass through the corresponding centres of the contact surfaces of the rear wheels (20) and the angle (a) of the vertex of the triangle is between 44 and 71 degrees.

Description

THREE-WHEELED COASTER Technical Field
Present invention relates to a three-wheeled coaster, specially a three-wheeled coaster having a steering bar.
Background Art
In the state of the art there are known several three-wheeled coasters with a steering bar.
From the U. S. patent US210435 (published on 03.12.1878) is known a three-wheeled coaster with wheels having relatively small diameter, whose main part or base comprises mainly a triangular platform, having wheels on its. Rear wheels are freely pivotable around their corresponding pivoting axles, which are inclined relative to the plane of the platform. Front or steerable wheel is pivotable by the steering bar.
From the U. S. patent US1467453 (published on 11.09.1923) is known a three-wheeled coaster, where the base of the coaster is formed by a mainly triangular platform, having wheels on the tips of the platform. Front or steerable wheel is pivotable by a steering bar.
From the U.S. patent US1145485 (published on 06.07.1915) is known a three-wheeled coaster (scooter/skateboard), where the base of the coaster is formed by a mainly triangular platform having roughly the shape of an isosceles triangle.
The rear wheels are placed close to the “tips” of the two equal sides of the triangular platform and those rear wheels are coaxial. Third wheel or front wheel (steerable wheel) is located at the third tip of the platform.
The front wheel is pivotable around a steering axle, which is at angle of 45 degrees relative to the level of the platform.
Pivoting of the wheel is effected by means of a steering bar, which by one of its ends is attached to the bracket holding the steerable wheel, and said bracket is pivotable together with the front wheel around a steering axle.
For turning the coaster the steering bar must be tilted to the left or to the right, as a result of which the front wheel is pivoted around its steering axle.
The steering bar is connected to the bracket holding the front wheel by means of an articulated joint so that the coaster can be pulled behind the user.
These designs have a disadvantage, that they do not allow the user using a steering bar in an easy way to keep balance, because the steering bar only enables to pivot the front wheel, but it does not give support to the user in the longitudinal direction of the coaster (in the straightforward direction of the travel).
Also keeping a balance on these designs is difficult when generating forward movement by shifting the centre of the gravity of the user, because the distance between the rear wheels and the distance of their common imaginary axis from the front wheel is not suitable for that purpose.
The coasters according to the above mentioned solutions are rather suited to be used similarly to the scooters.
Disclosure of Invention
The present invention provides a coaster, enabling the user to generate forward movement by shifting the centre of the gravity of user’s body while resting on the coaster and to keep his/her balance with the help of the steering bar and at the same time use the latter for steering the coaster.
This is achieved by the means of a three-wheeled coaster, comprising a platform having a support surface for the user’s feet and where two coaxial rear wheels and one front or steerable wheel are attached to the platform, whereby front wheel is pivotable relative to the platform with the steering bar and the steering axle of the steerable wheel is inclined relative to the plane of the platform.
The rear wheels are attached to the platform relative to the front steerable wheel such that the centre of the contact surface of the front wheel on the support surface of said wheel is situated on the vertex of the imaginary isosceles triangle, and the corresponding sides of said imaginary isosceles triangle coming from said vertex pass through the corresponding centres of the contact surfaces of the rear wheels on the support surface. Preferably angle of the vertex of said isosceles triangle is in the range of 44 to 71 degrees.
According to the preferred embodiment of the invention, the steering axle of the pivotable front wheel has an inclination relative to the horizontal level of the platform in its longitudinal direction in the range between 40 and 60 degrees.
According to the preferred embodiment of the invention, the steering bar for pivoting the front wheel is rigidly attached to the steering axle (pin) of the front wheel.
In the top view the platform of the coaster the rear edge of the platform comprises a curved cut so that in the middle part of said rear edge said cut is positioned relative to the common imaginary axis through the rear wheels on the side of the front wheel or at least in the middle part of the rear edge said cut extends to the area between common axis through the rear wheels and the axis of the front wheel.
According to another preferred embodiment of the invention the axles of rotation of all three wheels are placed above the support surface for the user on the platform.
In the preferred embodiment of the coaster the distance between the common axis through the rear wheels and the axis of the front wheel is equal or greater than the distance between the rear wheels.
According to another preferred embodiment of the coaster the length of the platform is at least 2/3 of the distance between the common axis through the rear wheels and the axis of the front wheel when the front wheel is in the straight position.
Preferably the steering bar is placed at the distance behind the front wheel which makes up to 1/3 of the distance between the common axis through the rear wheels and the axis of the front wheel.
The ratio between the length and the width of the platform of the coaster is preferably in the range of 3/4 to 4/5.
The distance between rear wheels is 80% to 115% from the distance between the common imaginary axis through the rear wheels and the axis of the front wheel.
In the preferred embodiment the lateral edges of the platform are slightly outwardly curved such that at least part of said lateral edges extend beyond the corresponding imaginary lines through the centre of the contact surface of the front wheel and the centres of the contact surfaces of the rear wheels on the support surface.
This is necessary in order to enable the user to perform stunts when riding on the coaster by leaning his/her weight to one of the lateral edges in order for example to ride one rear wheel in the air.
Preferably the support surface for the user’s feet on the platform is provided with the friction cover to prevent slippage of the user.
In the preferred embodiment the trail of the pivotable front wheel is up to 10 mm.
In the preferred embodiment the fore-run of the pivotable front wheel is up to 10 mm.
Brief Description of Drawings
Further the invention is described in greater detail with the help of the exemplary embodiment with references to the accompanying drawings, in which:
Figure 1 depicts an axonometric front view of the coaster according to the invention;
Figure 2 depicts an axonometric side view of the coaster according to the invention;
Figure 3 depicts a top view of the coaster according to the invention;
Figure 4 depicts a bottom view of the coaster according to the invention;
Figure 5 depicts a bottom view of the coaster of the invention showing the distances between the elements of the coaster;
Figure 6 depicts schematically the inclination angle of the steering axle of the front wheel; and
Figures 7 and 8 depict schematically the trail and the fore-run of the front wheel accordingly.
Best Mode for Carrying Out the Invention
At first the main elements of the coaster 1 are described with references to the Figures 1 and 3. The coaster 1 of the invention includes platform 10 having on the top side of the platform a support surface 15 for the feet of the user.
The platform 10 has two coaxial rear wheels 20 attached to it. Also the front part of the platform 10 includes one front wheel 35 (steerable wheel) having an inclined steering axle 30 relative to the platform and said front wheel is pivotable around said steering axle by the means of steering bar 25.
The steering bar 25 is rigidly attached to the steering axle 30 of the front wheel 35, i.e. the steering bar 25 is pivotable around the steering axle 30 only together with the front wheel 35.
In the top view of the platform the rear edge 40 of the platform 10 comprises a curved cut 45. At least in the middle part of said rear edge 40 said cut 45 extends to the area between common axis T1 through the rear wheels 20 and the axis T2 of the front wheel 35; see Figure 5.
This cut enables user to rest on the support surface 15 of the platform 10 in front of the axis of the rear T1 wheels 20, i.e. on the side of the front wheel 35 in relation of said axis.
As can be seen from the drawings, the front or steerable wheel 35 is located in front of the platform 10 and not under thereof.
Rear wheels 20 are attached to the platform 10 relative to the front wheel 35 such that the centre of the contact surface of the front wheel 35 on the support surface of said wheel 35 is situated on the vertex of the imaginary isosceles triangle, and the corresponding sides of said imaginary isosceles triangle coming from said vertex pass through the corresponding centres of the contact surfaces of the rear wheels 20 on said support surface.
In preferred embodiments the angle α of the vertex of said isosceles triangle is in the range of 44 to 71 degrees; see Figure 5.
In the embodiment depicted on drawings the axles of rotation of all wheels 20, 35 lie above the user’s support surface 15 on upper side of the platform 10.
In the embodiment depicted on drawings the distance A between the axis T2 of the front wheel 35 and the common axis T1 through the rear wheels 20 is greater than the distance B between rear wheels 20.
In the depicted embodiment the ratio between the length L and width W of the platform 10 is about 4/5. Preferably this ratio is in the range between 3/4 and 4/5.
As mentioned above, the distance B between rear wheels 20 constitutes 80% to 115% from the distance A between the common imaginary axis T1 through the rear wheels 20 and the axis T2 of the front wheel 35.
In the situation depicted on the drawings these distances are approximately equal.
In the situation depicted on drawings it can be seen that in the top view (Figure 3) the steering bar is placed on the edge at the tip of the platform 10.
Also it can be seen from the drawings (especially from Figure 5), that for better balancing with the help of the steering bar 25, the steering bar 25 is placed at the distance behind the front wheel 35, which makes up to 1/3 of the distance A between the common axis T1 through the rear wheels 20 and the axis T2 of the front wheel 35.
In order to prevent the user slipping off the coaster 1, the support surface 15 of the platform 10 is provided with friction cover (not shown).
In the embodiment shown on Figures 1 to 5 the trail of the pivotable front wheel is virtually zero (Figure 6). This embodiment is preferable.
In further embodiment the maximum trail e of the pivotable front wheel 35 can be up to 10 mm; Figure 7.
In further embodiment the maximum fore-run e of the pivotable front wheel 35 can be up to 10 mm; Figure 8.
The value of inclination angle ß of the steering axle 30 of the pivotable front wheel 35 relative to the horizontal level is preferably 45 degrees.
In other embodiments said inclination angle ß can be in the range from 40 to 60 degrees.
In the preferred embodiment depicted on drawings the lateral edges 50 of the platform 10 of the coaster 1 are slightly outwardly curved (convex) such that at least part of said lateral edges 50 extend beyond the imaginary lines through the centre of the contact surface of the front wheel 35 and the respective centres of the contact surfaces of the rear wheels 20 on the support surface.
This allows by supporting user’s weight onto the lateral edge 20 to lift one of the rear wheels 20 into the air and ride the coaster 1 on two wheels.
Three-wheeled coaster of the invention can be used for travelling in several different ways.
The coaster can be used as kick-scooter and use the steering bar for steering.
But it may also be used for riding so that both feet of the user are on the platform and while holding a steering bar with one or with both hands, the user shifts the centre of gravity of his/her body relative to the platform while standing on a platform (and pivots the steerable wheel) and generating thus forwarding force for driving coaster on the support surface forward.
The invention is not limited to the embodiments described above and to the embodiments depicted on the drawings, but for the person skilled in the art many other embodiments are apparent in the scope of the claims.
List of Reference Numbers


1 - coaster
10 - platform
15 - support surface for the user’s feet
20 - rear wheel
25 - steering bar
30 - steering axle
35 - front wheel
40 - rear edge
45 - curved cut in the rear edge
50 - lateral edge
A - distance between the axis of the front wheel and the common imaginary axis through the rear wheels
B - distance between rear wheels
L - length of the platform
W - width of the platform
T1 - common imaginary axis of the rear wheels
T2 - axis of the front wheel
α - the angle of the vertex of an isosceles triangle, where the vertex of said triangle lies on the centre of the of the contact surface of the front wheel and the corresponding sides of said triangle coming from said tip pass through the centres of the contact surfaces of the rear wheels
ß - inclination angle of the steering axle of the front wheel relative to the horizontal level
e - fore-run or trail of the front wheel

Claims (14)

  1. Three-wheeled coaster (1), comprising a platform (10) having a support surface (15) for the user’s feet and having two coaxial rear wheels (20) and one front wheel (35) attached to the platform (10), whereby said front wheel (35) is pivotable relative to the platform (10) with the help of a steering bar (25) and the steering axle (30) of the steerable wheel (35) is inclined relative to the plane of the platform (10),
    characterized in that
    the rear wheels (20) are attached to the platform (10) relative to the front wheel (35) so that the centre of the contact surface of the front wheel (35) on the support surface of said wheel is situated on the vertex of the imaginary isosceles triangle, and the corresponding sides of said imaginary isosceles triangle coming from said vertex pass through the corresponding centres of the contact surfaces of the rear wheels (20) on said support surface, and preferably the angle (α) of the vertex of said isosceles triangle is in the range of 44 and to 71 degrees.
  2. Coaster according to previous claim characterized in that, the inclination angle (ß) of the steering axle (30) of the front wheel (35) in the longitudinal direction of the platform relative to the horizontal plane of the platform is in between 40 and 60 degrees.
  3. Coaster according to one or more of the preceding claims characterized in that the steering bar (25) for pivoting a front wheel (35) is rigidly attached to the steering axle (30) of the front wheel (35).
  4. Coaster according to one or more of the preceding claims characterized in that in the top view of the platform (10) the rear edge (40) of said platform is in the form of the curved cut (45) such that at least in the middle part of said rear edge (40) of the platform (10) said cut (45) extends to the area between common axis (T1) through the rear wheels (20) and the axis (T2) of the front wheel (35).
  5. Coaster according to one or more of the preceding claims characterized in that axles of rotation of all wheels (20, 35) lie above the support surface (15) for the user’s feet of the platform (10).
  6. Coaster according to one or more of the preceding claims characterized in that the distance (A) between the axis (T2) of the front wheel (35) and the common axis (T1) through the rear wheels (20) is greater than the distance (B) between rear wheels (20).
  7. Coaster according to one or more of the preceding claims characterized in that the length of the platform (10) is at least 2/3 of the distance (A) between the common axis (T1) through the rear wheels (20) and the axis (T2) of the front wheel (35) when the front wheel (35) is in the straightforward position.
  8. Coaster according to one or more of the preceding claims characterized in that the ratio between the length (L) and width (W) of the platform (10) is in the range of 3/4 to 4/5.
  9. Coaster according to one or more of the preceding claims characterized in that the distance (B) between rear wheels (20) is 80% to 115% of the distance (A) between the common imaginary axis (T1) through the rear wheels (20) and the axis (T2) of the front wheel (35).
  10. Coaster according to one or more of the preceding claims characterized in that the support surface (15) for the user’s feet is provided with friction cover.
  11. Coaster according to one or more of the preceding claims characterized in that the steering bar (25) is placed at a distance behind the front wheel (35), said distance is up to 1/3 of the distance (A) between the common axis (T1) through the rear wheels (20) and the axis (T2) of the front wheel (35).
  12. Coaster according to one or more of the preceding claims characterized in that the lateral edges (50) of the platform (10) of the coaster (1) are slightly outwardly curved such that at least part of said lateral edges (50) extend beyond the imaginary lines through the centre of the contact surface of the front wheel (35) and the centres of the contact surfaces of the rear wheels (20) on the support surface.
  13. Coaster according to one or more of the preceding claims characterized in that the trail (e) of the pivotable front wheel (35) is up to 10 mm.
  14. Coaster according to one or more of the preceding claims 1 to 12, characterized in that the fore-run (e) of the pivotable front wheel (35) is up to 10 mm.
PCT/EP2012/054309 2011-03-30 2012-03-13 Three-wheeled coaster WO2012130598A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EEU201100027U EE01063U1 (en) 2011-03-30 2011-03-30 Tricycle skateboard
EEU201100027 2011-03-30

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WO2012130598A1 true WO2012130598A1 (en) 2012-10-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9284013B2 (en) * 2012-12-06 2016-03-15 Jin Wook RIM Upright three-wheeled vehicle having suspension means
EP2930091A4 (en) * 2012-12-06 2016-07-06 Jin Wook Rim Upright three-wheeled vehicle having shock absorbing means

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US210435A (en) 1878-12-03 Improvement in velocipedes
US1145485A (en) 1914-04-18 1915-07-06 Samuel Hughes Coaster.
US1467453A (en) 1922-04-18 1923-09-11 Remacle Edmond Caster for toys
US3121878A (en) 1959-12-28 1964-02-25 Penn Pad Company Method of making shoulder pads
US4526390A (en) * 1983-03-21 1985-07-02 Skolnik Arthur M Toy vehicle
DE202007015244U1 (en) * 2007-10-31 2008-04-30 Lohmann, Alexander Standing on three points, with muscle power to moving sports and transport equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US210435A (en) 1878-12-03 Improvement in velocipedes
US1145485A (en) 1914-04-18 1915-07-06 Samuel Hughes Coaster.
US1467453A (en) 1922-04-18 1923-09-11 Remacle Edmond Caster for toys
US3121878A (en) 1959-12-28 1964-02-25 Penn Pad Company Method of making shoulder pads
US4526390A (en) * 1983-03-21 1985-07-02 Skolnik Arthur M Toy vehicle
DE202007015244U1 (en) * 2007-10-31 2008-04-30 Lohmann, Alexander Standing on three points, with muscle power to moving sports and transport equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9284013B2 (en) * 2012-12-06 2016-03-15 Jin Wook RIM Upright three-wheeled vehicle having suspension means
EP2930091A4 (en) * 2012-12-06 2016-07-06 Jin Wook Rim Upright three-wheeled vehicle having shock absorbing means

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