| 摘要 |
This invention concerns a device for gripping the inside of hollow or bored items, that comprises a prehensile device (11) with a supporting head (14), so as to undertake a contracted inactive position, and an expanded active one; a divaricator (12) inserted in the prehensile device (11) movable between a first and a second position to respectively define the contracted and expanded positions of said prehensile device (11)), and a control lever fulcrated to the supporting head (14) and connected to the divaricator (12) to provoke the movements of the latter between the first position in which the device is in the contracted position and the second position in which the prehensile device is in the expanded position.
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