Stepped surface propeller
US8696318B2 · kind B2 · utility
1Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | May 27, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2001/185
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine surface propeller, and blade therefore, which is surface piercing and partially submerged, and includes a blade geometry that improves distribution of pressure and control to wetted and ventilated regions. Preferably, the feature has a positive step (ramp, cup, interceptor, indent or other geometric addition or intervention) between one fifth and four fifths chord length so as to create a high pressure peak or zone in what is now a low pressure zone on either the blade face or back or both and to create speed controllable wetted and ventilated regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.