Watercraft with anticavitation control
US6571725B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 8, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Aug 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T70/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A water craft apparatus has an elongated hull with turbine propulsion drive adapted for ingesting water at a turbine water intake and for ejecting the water, with high velocity, at a turbine water outlet. A plurality of water suction apertures are arranged along both a starboard and a port portions of the hull, and these are in communication, through an intake manifold, with the turbine at the water intake for delivering the water from the body of water to the turbine. A plurality of aperture doors are hingably mounted on the hull, each one of the plurality of aperture doors is movable between an open attitude spaced outwardly from the one of the water suction apertures enabling admittance of the water into the intake manifold, and a closed attitude positioned for sealing the one of the water suction apertures. The apertures span a longitudinal distance along the hull. The longitudinal distance exceeds a horizontal length of a wave cycle of the body of water. The aperture doors are closed automatically when the surface level of the body of water moves below any of the aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.