CRAB KEEPING TANK Russian patent published in 2006 - IPC A01K61/00 

FIELD: fish industry.

SUBSTANCE: tank has one or more air-impermeable hollow round members equipped with non-return blowing valves, blowing hoses and compressors for said blowing hoses. Air-impermeable round members serve as annular floats and are formed from hollow polyethylene pipes provided with stoppers or from strong air-impermeable fabric. Bottom and lateral parts of tank meshed chamber are made from differently configured and sized meshed cloths. Weight puller is secured along edge of fine-mesh member of bottom part. Obstacle forming tape made from 30-40 cm wide metal mesh is fixed to lower side of annular float so that said tape protrudes inward and outward from both sides of annular float. Mid portion of tank upper part is open. Flexible feed charging hose is passed through opening in said mid portion into tank. Upper end of flexible hose is disposed on water surface so as to charge feed and lower end of said hose is fixed so that feed supplied through said hose is directed onto tank bottom central portion or onto feed accommodating tray. Hose end disposed on water surface is moored to tank servicing platform or to float.

EFFECT: reduced manufacture and operating costs.

9 cl, 4 dwg