High pressure compass housing
US4004348A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1975 |
| Grant date | Jan 25, 1977 |
| Priority date | — |
| Expiry date | Jan 16, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG12B9/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compass housing capable of withstanding high external pressure such as encountered in deep submergence applications. The housing includes a pair of hemispherical portions interconnected to form a sealed enclosure and at least one portion being formed of a resilient material capable of expansion and contraction in the presence of varying differential pressure conditions. The housing is completely filled with a damping liquid under pressure to provide an internal pressure higher than atmospheric pressure such that in the presence of higher external pressures, the inner and outer pressures tend to equalize, thereby minimizing the differential pressure on the housing itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.