| 摘要 |
<p>An extractor for nails comprising a cylinder, a piston reciprocable in said cylinder under the influence of fluid pressure, a pair of gripping jaws located externally of said cylinder, at least one of which jaws is movable between nail gripping and non-gripping positions as a result of mechanical interaction between said piston and said movable jaw or jaws upon displacement of said piston towards and away from said jaws under the action of fluid pressure.</p> |
