PNEUMATIC RADIATOR Russian patent published in 1998 - IPC

FIELD: fishing. SUBSTANCE: pneumatic radiator is intended for action on fish for its directional movement during industrial fishing, for fish protecting structures and for seismic prospecting. Body 1 of radiator has exhaust holes 3 and inlet holes 2 for passage of air into working chamber 6. Body houses valve that opens and closes hole 3 with movement. Resonator 9 in the form of shell made from elastic material embraces body 1. Acoustic pulse is emitted into water with supply of air from working chamber 6 into space of resonator. Wasted air goes through additional exhaust hole 4 overlapped by spring-loaded valve 12. EFFECT: increased efficiency of action on fish. 1 dwg