Marine propeller and method of design thereof
US9745948B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2014 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Aug 21, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H1/26
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine propeller has an outer hub having a central axis and a blade having a blade root attached to the outer hub and extending radially outward from the outer hub toward a blade tip. The blade has a leading edge and a trailing edge. The propeller has a diameter between about 15 inches and about 17 inches and a pitch between about 14 inches and about 24 inches. The blade has a progressive rake angle such that a first local rake angle at the blade root is less than a second local rake angle at the blade tip. A combination of the diameter, pitch, and progressive rake angle provides a marine vessel to which the marine propeller is coupled with minimum drag while the marine vessel is operating at less than a maximum vessel speed. A method of designing a propeller is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.