| Patent Number |
Title Of Patent |
Date Issued |
| 8128178 |
Cutter head for a ground cutter machine having rotary cutters |
March 6, 2012 |
| The invention relates to a cutter head for a ground cutter machine having at least one cutter motor. Each cutter motor comprises: two hydraulic motors, each comprising a stator and a rotor and having a common axis; a single shaft extending along said common axis and having two ends; tw |
| 8020323 |
Drilling tool |
September 20, 2011 |
| The invention relates to a drilling tool comprising: two pairs of rotary drums in axial alignment on parallel axes; a motor mechanism for driving rotation of the drums; a support element; and a support structure on which the drums are mounted to rotate and serving to connect the drums to |
| 7765723 |
Cutter head for an excavator machine |
August 3, 2010 |
| The invention relates to a cutter head for an excavator machine including at least one cutter motor, each cutter motor comprising: a fastener plate; a mounting structure secured to the fastener plate and presenting a central portion and two mounting assemblies disposed on either side o |
| 7591514 |
Cutter head for an excavator machine |
September 22, 2009 |
| The invention relates to a cutter head for an excavator machine having at least one cutter motor, each cutter motor comprising: a fastener plate; a mounting structure comprising an end portion and a mounting assembly; a single hydraulic motor mounted in said mounting assembly and having |
| 7591329 |
Auger with a movable gouge for making a borehole |
September 22, 2009 |
| The invention relates to an auger for making a borehole that presents in its inside wall a groove that is substantially helical, said auger comprising: a hollow core provided with an outer helical blade; a movable cutter gouge suitable for taking up an active position in which the gouge |
| 7114271 |
Cutting tool for digging trenches, and enabling the cutter head to be changed quickly |
October 3, 2006 |
| The invention relates to a cutting tool for digging vertical trenches, the tool comprising: a jib (B); a cutter structure (34; C) suspended from the jib via a cable; a plurality of cutter members (18) disposed on at least one cylindrical surface; a motor assembly (12); power supply mea |
| 6839988 |
Drilling apparatus for hard ground |
January 11, 2005 |
| An apparatus for drilling trenches in the ground comprising a main frame having two vertical main faces, a drilling assembly comprising a support disposed at the bottom of said frame, means for causing said drilling assembly to move in vertical translation relative to said main frame by |
