Method and apparatus for extending the depth range of underwater equipment
US4853722A · kind A · utility
36Cited by
7References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 1988 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Sep 12, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for extending the depth range of an underwater pressure hull such as an underwater camera body by providing a means responsive to ambient pressure for equalizing the pressure between the hull and its environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.