Mass retrieval for acoustic pulse generator
US5154254A · kind A · utility
9Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1990 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Apr 16, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for mass retrieval for an acoustic pulse generator are disclosed herein. In an impulse type seismic generating apparatus an air spring, mechanical spring, controlled pressurization of an air spring or other energy storage medium is employed to use potential energy to raise the impact mass to a resting position above an earth contacting baseplate as quickly as possible after the impact mass strikes the baseplate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.