Structural member having a high strength to weight ratio and method of making same
US4399992A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1980 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Mar 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/23
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.