DEVICE FOR CLEANING WATER RESERVOIRS AND SAPROPEL EXCAVATION Russian patent published in 1995 - IPC

FIELD: cleaning of water reservoirs. SUBSTANCE: intake member is made in form of tube with piston. Piston is made in form of tube with piston. Piston is made in form of cylindrical ring and connected by means of flexible link to reversing drive. Tube has intake and discharge holes with valves. Piston rod may be passed through cylindrical ring and connected by means of flexible link with drive. Rod may be made hollow with intake hole and valve. EFFECT: higher efficiency. 5 cl, 5 dwg