Structural member having a high strength to weight ratio and method of making same
AssigneeQuestor Corporation
InventorRobert P. Molitor
Life of this patent
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Abstract
A novel structural member, such as a tennis racket, and the method for making same, provides a high strength to weight ratio. The structural member of this invention consists of a fiberglass shell which surrounds a syntactic foam core. The fiberglass shell may be further selectively reinforced with a ribbon which is formed from a high strength fiber such as boron fibers, graphite fibers, aramid fibers, etc. Because the structure of this invention incorporates a high strength to weight ratio it can be utilized in the manufacture of rackets of conventional and radical design. This invention relates to a structural member consisting of a tennis racket having a high strength to weight ratio.
Claims4
In a racket frame having a head, throat and handle, an improved construction wherein said frame comprises
- a core consisting of a mixture of syntactic foam and a blowable non-syntactic foam;
- a fiberglass outer shell bonded to and substantially covering said core;
- and
- the racket frame further comprising high strength fiber material comprising a ribbon of graphite material woven together by aramid fibers located about at least a portion of said racket frame.
Dependencies are inferred from the claim text.