Watercraft propulsion device
US4688994A · kind A · utility
6Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Oct 14, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H1/36
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A watercraft propulsion device having a forward and a rearward foil in nested relationship for reciprocal oscillating movement in opposite directions having a foil angle greater than 0.degree. and less than 60.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.