Series of underwater vision articles
US8185973B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2006 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Feb 23, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B33/008
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention concerns a series of underwater vision articles comprising two optical elements (1, 3), two sealing elements placed in contact with the face via their right and left contact areas (2, 4), having the following characteristics: the optical elements are placed flatly on a plane on the side opposite the contact areas: P1, P2 represent respective points that are the lowest and to the furthest left from the inner edge (5) or outer edge (6) of the left contact area (4); P3, P4 represent respective points that are the lowest and the furthest right from the inner edge (7) or outer edge (8) of the right contact area (2). Independent of the size, the ratio between PP2,4 and PP1,3 is constant, and/or the ratio between, on the one hand, PP2,4 and a constant and, on the other, PP1,2 is constant or PPi,j is the distance between Pi and Pj for any i and j.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.