Device for producing mechanical waves
US4011924A · kind A · utility
12Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1974 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | Oct 1, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for generating sound waves for use in shallow terristrial seismology incorporates a percussion mass, a motor for driving the percussion mass to strike the ground for intermittent contact and adjustable to vary the frequency of impact, and a sensing element to provide a signal indicative of at least the instant of impact and preferably also the deceleration amplitude of impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.