Water ski
US4608023A · kind A · utility
18Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1984 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Jun 7, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B32/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A water ski of conventional form so far as general contour and leading end uptilt is concerned, has two tunnels or grooves formed in its underface and a fin in each tunnel which projects downwardly from the trailing end portion of its tunnel. The tunnels: PA1 1. are arcuate in cross-section, PA1 2. begin in a point short of the leading edge of said underface and end at the trailing end of said underface, and PA1 3. at said point are of zero width and depth and, proceeding to said trailing end, progressively increase in both of these lateral directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.