US 12,447,586 B2
Screwing/unscrewing tool suitable for a screw or a bolt that is difficult to access, in particular on a mast or a jib of a crane
Yves Alloin, St Germain en Brionnais (FR); Olivier Gollion, Caluire et Cuire (FR); Florent Mourin, Chasselay (FR); Dominique Chambon, Charlieu (FR); Pascal Crocombette, Escoutoux (FR); and Sylvain Leblan, Bully (FR)
Assigned to Manitowoc Crane Group France, Dardilly (FR)
Filed by MANITOWOC CRANE GROUP FRANCE, Dardilly (FR)
Filed on Jan. 25, 2023, as Appl. No. 18/159,678.
Claims priority of application No. 2200668 (FR), filed on Jan. 26, 2022.
Prior Publication US 2023/0234191 A1, Jul. 27, 2023
Int. Cl. B25B 13/00 (2006.01); B25B 13/48 (2006.01)
CPC B25B 13/481 (2013.01) 18 Claims
OG exemplary drawing
 
1. A screwing/unscrewing tool, for screwing/unscrewing a screw or a bolt, the screwing/unscrewing tool comprising a first part and a second part coupled in rotation around a main axis, and comprising an adjustment screw, and wherein:
the first part comprises a lever secured to a screwing/unscrewing bit provided with at least one screwing/unscrewing recess centered on the main axis;
the second part comprises a support arm on which the screwing/unscrewing bit is rotatably mounted around the main axis, said support arm being equipped with a tapped hole; and
the adjustment screw is screwed into the tapped hole, the adjustment screw having a coupling head configured for a coupling with a screw-gun or a wrench, and extended by a threaded rod having a free end suitable for abutment on the lever of the first part in order to apply a pivoting force to the lever around the main axis,
and wherein the tapped hole and the adjustment screw are centered on a screwing axis contained in a plane orthogonal to the main axis.