SPORTS BOARD WITH ADJUSTABLY FLEXIBLE STRINGER
An adjustably flexible stringer and a sports board employing the stringer are disclosed. The sports board includes a foam core in which the stringer is embedded. The stringer includes a plurality of flexible longitudinal strips overlapped with one another and is arranged from one end to the other end in order of increasing flexibility. Specifically, the strips vary in length from each other. Alternatively, the strips may vary in height, width or materials. By varying the arrangement of the strips, an almost unlimited number of configurations may be attained. As such, the sports board employing that stringer may be constructed in a variety of maulers with desired flexibility.
This is a continuation-in-part of co-pending application Ser. No. 12/068,616, filed on Feb. 8, 2008.
BACKGROUND OF INVENTION1. Field of Invention
The present invention relates to a sports board, such as surfboard, bodyboard, snowboard or the like, and more particularly to a sports board having an adjustably flexible stringer.
2. Related Prior Art
Many sports boards involve the use of flexible reinforcing materials to form a desire finished configuration. An example of the sports board is found in U.S. Pat. Nos. 5,114,370 or 5,224,890, wherein a bodyboard is provided to incorporate selected regions of differing stiffness in order to combine in one board the speed associated with relatively stiff bodyboards and the maneuverability of soft body boards. Laminated into the layered structure of the bodyboard is a fiber mesh which has a size and orientation designed to stiffen the rear four-fifths of the bodyboard. The remainder of the board, adjacent the nose, incorporates a pattern of parallel arcuate channels which increase the bendability of the nose portion of the board. The flexibility in the nose area enhances maneuverability. However, the reinforcing mesh has constant flexibility only, and is not allowed to be changed while manufacturing.
Another example of sports board is of the formed disclosed in U.S. Pat. No. 6,036,560. This is a variable flexible bodyboard, which includes therein, at least one two-part stringer rod. The stringer rod is composed of a material to impart stiffness to the body of the bodyboard, such as a fiber-resin material, and a material to impart flexibility to the front nose area of the bodyboard, such as a polyethylene material. Nevertheless, either the stiff portion or the flexible portion of the stringer rod has constant flexibility and is invariable.
SUMMARY OF INVENTIONThis invention relates to an adjustably flexible stringer and a sports board employing the stringer. The sports board includes a foam core in which the stringer is embedded. The stringer includes a plurality of flexible longitudinal strips overlapped with one another and is arranged from one end to the other end in order of increasing flexibility. In accordance with one embodiment of the invention, the strips vary in length from each other. In other examples, the strips may vary in height, width or materials. By varying the arrangement of the strips, an almost unlimited number of configurations may be attained. As such, any stringer may be made with desired flexibility. Also, a sports board having that stringer may be constructed with desired flexibility according to user demand. Therefore, the sports board with variable stringer overcome the prior art problem of invariable flexibility.
The present invention and the advantages thereof will become more apparent upon consideration of the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
In the embodiment illustrated in
The two stringers 2 are embedded in the foam core 1 and parallel to each other. Each stringer 2 has a first end 20 and a second end 21. The first and second ends 20, 21 of the stringer 2 are oppositely directed toward the rear end 11 and the front end 10 of the foam core 1 respectively.
Referring to
In this embodiment, the three strips 22 of each stringer 2 are tied up with a steel wire 23. In other examples, the three strips 22 may be glued together via an adhesive. Alternatively, screw means (such as screws), snapping means (such as snap rings or rivets) or binding straps may be used to tie the strips 22 together.
With reference to
With reference to
It will be appreciated that although a particular embodiment of the invention has been shown and described, modifications may be made. It is intended in the claims to cover such modifications which come within the spirit and scope of the invention.
Claims
1. A sports board comprising:
- a foam core having a front end and a rear end; said front end facing in a forward direction of said sports board; and
- a stringer arranged within said foam core, extending substantially from said front end toward said rear end of said foam core, and including a plurality of flexible longitudinal strips overlapped with one another.
2. The sports board of claim 1, wherein said stringer is arranged from one end to the other end in order of increasing flexibility.
3. The sports board of claim 2, wherein said strips are arranged within said foam core top to bottom in order of increasing length.
4. The sports board of claim 3, wherein said strips are vertically aligned at one end toward said rear end of said foam core.
5. The sports board of claim 3, wherein said strips are arranged top to bottom in order of increasing flexibility.
6. The sports board of claim 4, wherein said strips are arranged top to bottom in order of increasing flexibility.
7. The sports board of claim 5 further comprising a reinforcing bar arranged in said foam core and parallel with said stringer.
8. The sports board of claim 6 further comprising a reinforcing bar arranged in said foam core and parallel with said stringer.
9. A stringer including a plurality of flexible longitudinal strips overlapped with one another, wherein said strips are arranged top to bottom in order of increasing length and are vertically aligned at one end.
10. The sports board of claim 9 wherein said strips are arranged top to bottom in order of increasing flexibility.
Type: Application
Filed: Aug 15, 2008
Publication Date: Dec 11, 2008
Inventor: Tzong In Yeh (Fremont, CA)
Application Number: 12/192,612
International Classification: B63B 35/73 (20060101);