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Inventor: Hager; Ulrich
Address: Cernoy, FR
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5437338 |
Hydraulic drive unit for driving a drilling tool |
August 1, 1995 |
| This invention relates to a drive unit comprising a frame; a rotating shaft, a first fluid motor presenting a cam fixed with respect to the frame; and a cylinder block fast with the shaft driven by the first motor at a first speed of rotation.According to the invention, the shaft present |
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