GRID CASCADE-TYPE APPARATUS FOR EXTRACTING SURFACE OBJECTS OF CATCH Russian patent published in 1998 - IPC

FIELD: commercial fishery. SUBSTANCE: apparatus has catchers interconnected through wing portion to define single catching apparatus. Catchers have inlet devices defined by wing, enclosures and lifting passage. Apparatus has control catcher positioned in symmetry with wing. Control catcher has four accumulating vessels defined by catcher walls, longitudinal and transverse grid-type partition walls, and four inlet devices, respectively. Remaining catchers may be made rectangular, trapezium-shaped or angular and may be arranged in symmetry with wing axis and laterally of wing. In case of lateral arrangement of remaining catchers, wing serves catcher wall. Spacer members of catchers are positioned on upper front and/or rear edges of catchers. EFFECT: wider operational capabilities and increased efficiency in catching surface objects and, thus, increased fish yield. 4 cl, 8 dwg