Power-driven screwing head

B - Operations – Transporting – 25 – B

Patent

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81/25

B25B 17/00 (2006.01) B25B 21/00 (2006.01) B25B 23/00 (2006.01) B25B 23/14 (2006.01)

Patent

CA 1254774

Abstract/ In order to be able to remove a screw that has been installed, in a power-driven screwing head, it is proposed according to the present invention that the recessed portion of smaller diameter be divided into two zones that extend in the longitudinal direction of the sleeve, there being a recessed portion of greater diamter between said zones./

506597

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