Hydrophone with automatic inhibition in case an adjustable immersion threshold is exceeded
US6754136B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Oct 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H3/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hydrophone which is automatically inhibited when the immersion depth exceeds a predetermined threshold by action, on the push element (7) of a switch (6), of a flexible wall that bends under the action of the outside pressure. The hydrophone comprises a tubular body (1) with two chambers (1a, 1b) separated by a partition (2). One of the chambers is closed by a flexible diaphragm (4). Switch (6) is fixed at the center of one of the chambers. Diaphragm (4) can push down on and actuate push element (7) by bending. The body can advantageously consist of two parts that can be screwed onto one another, which allows easier adjustment of the inhibition pressure. A pressure-sensitive reception unit (S) is arranged in the other chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.