Land vehicles – Skates – Runner type
Reexamination Certificate
1997-09-26
2001-02-06
Hurley, Kevin (Department: 3619)
Land vehicles
Skates
Runner type
Reexamination Certificate
active
06183000
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a snowboard with very low weight and high mechanical strength.
Snowboards, surfboards, monoskis, water-skis and the like are conventionally manufactured according to two basic construction criteria which are derived from skiing: in particular, there are injection-molded boards and so-called sandwich boards.
Injection-molded boards use a mold into which the materials that constitute the lower part and the upper part of the snowboard are placed, injecting polyurethane of appropriate density which, by expanding, forms the core of the board.
This solution does not yield optimum results, since there are considerable difficulties in achieving high mechanical strength of the board; considerable weights are also obtained.
The sandwich method uses a wood core which has a structural function and is placed inside layers of stiffening material of various kinds, placed between a base and a topskin.
Two shaped elements made of plastics, generally ABS, are added to the wood core and form the ends; this solution, however, is not ideal, since inevitably there is a discontinuity between the shaped ends and the central part where the core is provided. Moreover, in order to round the edges of the board, as typically occurs, it is necessary to carry out preliminary machining of the edge of the wood core before embedding it between the layers of stiffening material of various kinds, with application of the laminae and of the lower base and of the upper topskin.
Although these boards have better mechanical strengths than boards produced by injection molding, they are not free from drawbacks, including the poorly bonded connection between the ends and the core and a relatively high weight, in addition to risks of deformation caused by the use of wood.
SUMMARY OF THE INVENTION
The aim of th e present invention is to eliminate the drawbacks mentioned above, by providing a snowboard with high mechanical strength which, although having a sandwich-type structure, makes it possible to have a core which can be shaped even at the tips without having to resort to addition al elements.
Within the scope of this aim, a particular object of the present invention is to provide a snowboard which, while having great mechanical resistance to flexural and torsional stresses, is particularly lightweight and in any case is distinctly lighter than conventional boards, in addition to significantly improving their performance.
Another object of the present invention is to provide a board which allows to provide board stiffening elements so as to adapt to the different performance characteristics to be provided.
Another object of the present invention is to provide a snowboard with high mechanical strength which can be easily obtained starting from commonly commercially available elements and materials and is furthermore competitive from a purely economical point of view.
This aim, these objects and others which will become apparent hereinafter are achieved by a snowboard with high mechanical strength, according to the invention, characterized in that it comprises a core made of foamed plastics which is arranged between a lower layer and an upper layer of fabric impregnated with epoxy resin, and in that said core can be shaped and rigidly coupled to said layers by molding in a heated mold, a base with a corresponding lamina, associated with said lower layer, and a topskin element, associated with said upper layer, being also provided.
REFERENCES:
patent: 2908506 (1959-10-01), Runton
patent: 5544908 (1996-08-01), Fezio
patent: 5746537 (1998-05-01), Kellas
patent: 5769445 (1998-06-01), Morrow
patent: 5888329 (1999-03-01), Cho et al.
patent: 42 33 647 (1994-04-01), None
patent: 2 667 536 (1992-04-01), None
patent: 2 704 155 (1994-10-01), None
Alpitech S.r.l.
Hurley Kevin
Josif Albert
McKinley Kevin
Modiano Guido
LandOfFree
Snowboard, surfboard, Monoski, water-ski and the like with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Snowboard, surfboard, Monoski, water-ski and the like with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Snowboard, surfboard, Monoski, water-ski and the like with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2572546