E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 5/10 (2006.01) E02F 3/08 (2006.01) E02F 5/06 (2006.01) E02F 5/12 (2006.01)
Patent
CA 2225841
A method of operation to effectively excavate an underdrain in the field ground having a long service life and ensuring that the underdrain will not be closed after a long period of time and a device for such operation. The method comprises attaching a plurality of buckets to an endless chain, driving said endless chain to excavate a slit in the field ground, reforming inner side walls of the slit by a reformer, pressing earth from both sides of the slit laterally inwardly by a pressing member attached to the reformer to form a block to separate said slit into an upper space and a lower space, and charging the upper space with discarded dirt.
Ridout & Maybee Llp
Yugenkaisha Unit Shoji Limited
LandOfFree
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