| 摘要 |
<p>The stick comprises a screw point (1) in the shape of a cochlea (3), of a diameter slightly greater than the one of the stick, for penetrating in the soil by means of the application of a rotating means with two lever arms (10) or (15), consisting of a piston-pin (9) that may be inserted in a hole (8) provided in the upper part of the stick or, in a variant, of a poligolan key (14) that may be applied on a metal ring (13) out of one piece with said stick. Said piston-pin (9) as well as key (14) are mounted, in their resting position, on the upper part of the stick by means of two latches (12) or (12 min ).</p> |
