Snowboard
US5769445A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1995 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63C5/126
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A composite torsion box core for a snowboard comprises a center core member of lightweight wood or foam enveloped within a composite of a seamless, large diameter tubular sock. By expanding or compressing the length of the large diameter tubular sock during fabrication, the alignment of fibers within the sock is adjusted for programming a desired longitudinal and torsional rigidity relationship for the snowboard. Furthermore, side members, comprising separate composite torsion box cores having smaller diameter tubular socks, are disposed on opposite sides of the center core member and provide increased side strength for the overall torsion box core for enhancing the snowboard's edging strength without compromising torsional flexibility. Plural side members of various materials, sizes and spacing relative to each other are employed to provide snowboards having differing ride characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.