Trenching apparatus

Details Trenching apparatus Trenching apparatus

E - Fixed Constructions

02

F

61/5.5

E02F 5/04 (2006.01) F16L 1/04 (1980.01)

Patent

CA 1127855

ABSTRACT OF THE INVENTION An apparatus for trenching beneath an elongated member lying on the bottom of a body of water has a movable frame member, at least one cutting assembly, an assembly support means connected to the frame member for supporting each cutting assembly and for moving each cutting assembly at least in a laterally directed plane, and a spoil removal system. Each cutting assembly comprises at least two actuatable cutting tools which are driven for cutting movement relative to cutting tool axes. The cutting tool axes, for each cutting assembly, define an assembly cutting plane and means are provided for rotating the assembly cutting plane relative to the laterally directed plane, thereby, varying the cutting swath of the associated cutting assembly. Each cutting assembly has a rotatable bifurcated cutting tool support arm for supporting two generally upright, downwardly directed rotatable cutting tools and means actuatable to rotate said tools about respective tool rotating axes.

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