Boat propeller with adjustable blades for adjusting the pitch thereof
US7357686B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 22, 2005 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Dec 2, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H3/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A boat propeller comprises a hub formed of a first cylindrical member and a second cylindrical member detachably joined together. The second cylindrical member comprises a plurality of insertion cavities formed in the second cylindrical member, an end of each of the insertion cavities having a plurality of receptacle members. The boat propeller also comprises a plurality of blades equal in number to the number of insertion cavities. Each blade comprises a blade piece portion and an adjustment member, a tip of the adjustment member comprising a positioning member such that the positioning member makes contact with at least one of the receptacle members when the adjustment member is inserted into the corresponding insertion cavity. The positioning member of the adjustment member is selectively matched with one or more of the receptacle members for adjusting a pitch of the blades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.