SKATEBOARD WITH DIRECTION-CASTER
A skateboard has a board, and at least one front direction-caster and at least one rear direction-caster each respectively mounted at the front part and rear part of the underside of the board and having roller arms that are freely pivotable about an inclined axis and oriented in a common directional orientation at an angle defined by the inclined axis.
This application is a Divisional Application of U. S. patent application Ser. No. 10/491,671, filed Apr. 2, 2004 which claims priority to Korean Patent Application No. 2002-0023890, filed May 1, 2002, Korean Patent Application No. 2003-0025663, filed Apr. 23, 2003, and PCT/KR2003/000874, filed Apr. 30, 2003, the entirety of all are incorporated herein by reference as if fully set forth herein.
FIELD OF THE INVENTIONThe present invention relates to a skateboard and a connecting element configured so the rider can easily turn and accelerate.
BACKGROUND ART As it can be seen in
However, without the rider's stamping onto the ground, the conventional skateboard cannot be accelerated or can be accelerated only by an extremely skillful rider.
Besides, there is another problem that the conventional skateboard cannot be tilted much for the right or left turn because the plate (111) touches the wheel of the wheel-set when the plate (111) is tilted more than a specific angle. With this reason, the conventional skateboard can be steered to a relatively small degree, so that it is not possible to change the direction of the skateboard for making a turn within a small turning radius.
Therefore, it is needed and is the objective of this invention to provide a skateboard which is much more steerable than the conventional skateboard and which can be accelerated without the rider's stamping onto the ground.
DISCLOSURE OF THE INVENTIONIn order to achieve the objects above, there is provided a skateboard which has a front board, a rear board and a connecting element which interconnects the two boards in a spaced relationship, the skateboard comprising:
one or more than one direction-caster which is mounted on the underside of the plate of at least one of the front board and the rear board; and
the connecting element which includes an elastic member so that the connecting element can be elastically twisted or bent when it receives twisting force or bending force and it can be restored to its original shape when the force is removed.
In accordance with the present invention, the front board may have one or more than one direction-caster and the rear board may have one or more than one fixed roller set.
In accordance with the present invention, the connecting element may be a twist-pipe which has elastic material in it.
In accordance with the present invention, the connecting element may comprise the twist-pipe and two elastic members which are provided parallel to the twist-pipe at both sides of the twist-pipe and are connected to the front board and the rear board at each of their both ends.
In accordance with an aspect of the present invention, there is provided a skating board which has a front board, a rear board and a connecting element which interconnects the two boards in a spaced relationship, wherein at least one of the front board and the rear board has one or more than one direction-caster skate blade which is mounted on the underside of the plate of the front board and the rear board, the connecting element includes an elastic member so that it can be elastically twisted or bent when it receives twisting force or bending force and it can be restored to its original shape when the force is removed.
BRIEF DESCRIPTION OF THE DRAWINGS
Hereinafter, the present invention will be described in more detail with reference to the following Examples. However, these examples are given for the purpose of illustration and are not to be construed as limiting the scope of the invention.
EXAMPLES As it can be seen in
The board(10or20) comprises a plate(11or21), a direction-caster(13or23) which is mounted on the underside of the plate(11or21) and fastening devices(12) which tightly fasten the board(10or20) to the twist-pipe(40).
As it can be seen in
With this skateboard having the direction casters(13,23), as can be seen in
Alternatively, as can be seen in
Combining said two effects, as can be seen in
The mechanics for generating the driving force is shown in
As shown in
A plate spring(55), which will be installed in the rear pipe(50), is shown in
Besides, the two boards(10,20) can be separated by pushing the button(54) of the spring lock(53,54), so it is convenient for the rider to keep and carry the skateboard.
In addition, two or more direction-casters(13,23), which are mounted on the underside of the plates(11,21), can be installed so as to be aligned along a longitudinal axis of the plates(11,21), or so as to be parallel in a side-by-side arrangement With the longitudinal or the parallel configuration, the skateboard has a relatively larger turning radius, but it ensures greater safety.
As it can be seen in
In
And from the skateboard above, it is conceivable to invent a skating board, as can be seen in
Claims
1. A skateboard comprising:
- a board, and at least one front direction-caster and at least one rear direction-caster each respectively mounted at the front part and rear part of the underside of the board and having roller arms that are freely pivotable about an inclined axis and oriented in a common directional orientation at an angle defined by the inclined axis.
2. A skateboard according to claim 1, wherein the direction-caster comprises:
- a wheel support attached to the board having the shape of a wedge, a roller arm pivotably connected to the wheel support, and a roller rotatably connected to a free-end part of the roller arm.
Type: Application
Filed: Mar 22, 2007
Publication Date: Nov 8, 2007
Inventor: Singi GANG (Choongju-shi)
Application Number: 11/689,827
International Classification: A63C 17/04 (20060101);