Apparatus and method for eliminating electrical noise in the fire detect timing signal of an air gun
US6470997B1 · kind B1 · utility
4Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | May 2, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention describes an air gun for use in a marine seismic system. The air gun includes a gun body and shuttle that define a chamber containing a compressed supply of gas. The air gun is further designed to release the compressed gas so that the release time or gun fire time is monitored with sufficient accuracy. The fire time is measured by a timing coil that determines the location of the air gun shuttle by sensing a magnet disposed on the shuttle. The timing coil is designed to eliminate interference caused by magnetic flux generated by the actuation of an air gun solenoid valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.