Sailboard with adjustable keel mechanism
US4854904A · kind A · utility
19Cited by
4References
16Claims
0Family size
Inventor
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B32/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A planing-type hull has a keel which projects downwardly from a disk which is mounted in the bottom of the hull for limited rotational movement about a vertical axis located rearwardly of the center of the keel. In a second embodiment the keel projects downwardly from a sector or generally pie-shaped member, which is pivotal in the bottom of the hull between two limit positions. A spring-loaded detent may be employed to return the keel to a centered position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.