Hand-held sail
US4269133A · kind A · utility
Inventor
Key dates
| Filing date | Mar 16, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Mar 16, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H8/56
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a skate sail assembly of the type having a T-configured frame including a boom and a resiliently flexible mast detachably mounted thereon, and a generally sector-shaped sail supported in a taut condition by the frame, the boom has a U-shaped resilient portion intermediate its ends, which portion imparts flexibility to the boom in the longitudinal direction and additionally serves as a handle for the user. The flexibility imparted by the U-shaped resilient portion of the boom and the mast enables the device to be more easily assembled and dismantled, and is essential in order that the sail may function satisfactorily as an airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.