Sculling oar
US7223140B2 · kind B2 · utility
0Cited by
4References
11Claims
0Family size
Inventor
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Dec 11, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2016/046
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An object is to provide a Ro-scull which can suppress a decrease in thrust force by water resistance generated during turn-over operation and can realize high-speed cruise of a boat. The Ro-scull has a Ro-arm 1 and a Ro-blade 2 having a flat part 12 perpendicular to the Ro-arm 1. The Ro-arm 1 is attached to an upper end portion of the Ro-blade 2 from an obliquely lower side. Namely, the Ro-arm 1 and the Ro-blade 2 are joined to each other while the Ro-arm 1 “receives” the Ro-blade 2. A Ro-handle 3 is arranged not on the upper surface side but on the lower surface side of the Ro-arm 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.