Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1977-12-05
1980-01-29
Moskowitz, Nelson
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
181115, 367146, G01V 114
Patent
active
041857143
ABSTRACT:
The invention has application to an implosive sound generator which produces in a body of water a cavity that implodes resulting in a large acoustic impulse. The invention provides means for eliminating or substantially reducing the bubble effect by providing means for absorbing the rebound of the implosion of the cavity and preferably also for cancelling the recoil of the generator. A preferred embodiment of the generator comprises a slug chamber having a primary port. The slug chamber entraps a liquid slug therein when the generator is submerged in a liquid body. Force means propel the liquid slug with sufficient kinetic energy to create in the liquid body a main cavity which is imploded by the hydrostatic pressure head. To reduce or eliminate the rebound of the implosion, there is provided a suction chamber having at least one secondary port communicating with the liquid body near the site of the main cavity. A cavity is formed inside the suction chamber prior to the formation of the main cavity so that the main cavity and the suction cavity form one continuous cavity. The rebound of the implosion of the main cavity is absorbed by the cavity in the suction chamber thereby suppressing the bubble effect which would otherwise result from the rebound of the implosion of the main cavity. The generator preferably has a deflectorfor deflecting the high velocity liquid slug after it is propelled from the slug chamber, thereby eliminating the recoil of the generator.
REFERENCES:
patent: 3739869 (1973-06-01), Mayne
patent: 3951231 (1976-04-01), Leonard
Renard et al., "Simplar Water Gun, A New Implosion Type Seismic Source", 5/8/74, pp. 773-777, o.t.c. 6th, vol. I, paper 2017.
Avedih et al., "New High Energy Implosion Seismic Source", 7/73, pp. 42-43, Ocean Industry.
Davies Chadwick O.
Pascouet Adrien P.
Breston Michael P.
Moskowitz Nelson
LandOfFree
Implosive acoustic generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Implosive acoustic generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implosive acoustic generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-877714