| 摘要 |
<p>Jean-Charles DALAINE "TRENCH-DIGGING MACHINE" PRIORITY: 18 November 1985 - French patent 85 16983 in the name of the Applicant The trencher comprises a vehicle (1) having secured to its rear a boom (3) around which a digging chain (4) runs. The boom (3) is slidingly disposed in a sleeve-like frame (5) pivoted to the rear of the vehicle (1) and movable between an operative position and a raised transport position. Of use for digging trenches. See Fig. 1.</p> |
