Dredgers or soil-shifting machines for special purposes

EFIXED CONSTRUCTIONS E02Hydraulic engineering E02FDREDGING SOIL-SHIFTING

E02F5/00Dredgers or soil-shifting machines for special purposes

E02F5/003for uncovering conduits E02F5/006adapted for working ground under water not otherwise provided for E02F5/02for digging trenches or ditches E02F5/022with tools digging laterally with respect to the frame E02F5/025with scraper-buckets, dippers or shovels E02F5/027with coulters, ploughs, scraper plates, or the like E02F5/04with digging screws E02F5/06with digging elements mounted on an endless chain E02F5/08with digging wheels turning round an axis E02F5/10with arrangements for reinforcing trenches or ditches with arrangements for making or assembling conduits or for laying conduits or cables E02F5/101forming during digging E02F5/102operatively associated with mole-ploughs, coulters E02F5/103with oscillating or vibrating digging tools E02F5/104for burying conduits or cables in trenches under water E02F5/105self-propulsed units moving on the underwater bottom E02F5/106using ploughs, coulters, rippers E02F5/107using blowing-effect devices E02F5/108using suction-effect devices E02F5/109using rotating digging elements E02F5/12with equipment for back-filling trenches or ditches E02F5/125underwater E02F5/14Component parts for trench excavators E02F5/145control and indicating devices E02F5/16Machines for digging other holes in the soil E02F5/18for horizontal holes or inclined holes E02F5/20for vertical holes E02F5/22for making embankments for back-filling E02F5/223for back-filling E02F5/226with means for processing the soil E02F5/24Depositing dredged material in mounds E02F5/26Combined conveying-bridges and dredgers E02F5/28for cleaning watercourses or other ways E02F5/282with rotating cutting or digging tools E02F5/285with drag buckets or scraper plates E02F5/287with jet nozzles E02F5/30Auxiliary apparatus E02F5/305Arrangements for breaking-up hard ground E02F5/32Rippers E02F5/323Percussion-type rippers E02F5/326oscillating or vibrating