Skateboard

Details Skateboard Skateboard

2000-07-17

2001-09-25

Mar, Michael (Department: 3619)

Land vehicles

Wheeled

Coasters

Reexamination Certificate

active

06293571

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a skateboard.
2. Description of Related Art
A first conventional skateboard in accordance with the prior art shown in
FIG. 3
comprises an elongated solid body (
40
) made of plastic by means of an injection molding process, two support brackets (
41
) each secured on one of the two end portions of the elongated body (
40
) and each having two wheels (
42
) each rotatably mounted on one of the two end portions thereof. However, the solid body (
40
) is heavy, thereby decreasing its portability and increasing the cost of manufacturing. In addition, the solid body (
40
) lacks flexibility and elasticity, thereby reducing the manipulation and movement of the skateboard. Moreover, the elongated body (
40
) made of plastic cannot be reused when it is worn out.
A second conventional skateboard in accordance with the prior art shown in
FIGS. 4 and 5
comprises an elongated sheet-shaped body (
50
) made of an alloy, a reinforcing frame (
52
) secured on the bottom of the body (
50
), two support brackets (
52
) each secured to one of the two end portions of the reinforcing frame (
51
) and each having two wheels (
54
) each rotatably mounted on one of the two end portions thereof. However, the sheet-shaped body (
50
) is weak and is easily deformed when hit by foreign objects.
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional skateboards.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a skateboard comprising an elongated body including a top plate, a bottom plate and two opposite closed side plates each located between the top plate and the bottom plate, and a plurality of reinforcing ribs each longitudinally arranged in the elongated body and each supported between the top plate and the bottom plate.
The elongated body includes a support base formed on the mediate portion of the top plate thereof, and the skateboard comprises two strengthened frames each longitudinally arranged in the elongated body located adjacent to the support base, and each supported between the top plate and the bottom plate. Preferably, the elongated body, the reinforcing ribs and the strengthened frames are integrally made of an aluminum alloy.
The skateboard further comprises a foam core material inside the elongated body located between each of the strengthened frames and reinforcing ribs. The skateboard further comprises two flexible protective pads each secured on one of the two end portions of the elongated body.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.


REFERENCES:
patent: 3736609 (1973-06-01), Saucier
patent: 4182520 (1980-01-01), Stevenson
patent: 4337963 (1982-07-01), Stevenson
patent: 5232235 (1993-08-01), Brooks
patent: 5267743 (1993-12-01), Smisek
patent: 5673926 (1997-10-01), Gauer
cycle, Unholy Rollers, By John Burns, p. 48, lines 32-33.

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