Crane

B - Operations – Transporting – 66 – C

Patent

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Details

B66C 23/22 (2006.01)

Patent

CA 2572045

A crane to be fitted in a window opening or the like, between two opposing surfaces, has a strut (14) which is first braced between the surfaces (20a, 20b), and a boom (13) which extends away from the strut. A winch (5) on the crane winds up a lifting cafe (12) which runs over a pulley (3) at the outer end of the boom (13). The top and bottom ends of the strut have end plates (15, 7) which are designed to hold the crane rigidly between the two surfaces, but without damaging any surface finish on either surface. The boom (13) can be swung about the axis of the strut (14) to bring the load carried by the crane in towards the position of the operator.

Grue conçue pour être placée dans une ouverture de fenêtre, par exemple, entre deux surfaces opposées, et possédant une entretoise (14) reliant les surfaces (20a, 20b), ainsi qu'une flèche (13) s'éloignant de l'entretoise. Un treuil (5) placé sur la grue enroule un câble de levage (12) passant sur une poulie (3) à l'extrémité extérieure de la flèche (13). Les extrémités supérieure et inférieure de l'entretoise sont pourvues de plaques d'extrémité (15, 7) conçues pour maintenir la grue de façon rigide entre les deux surfaces, mais sans détériorer la finition de l'une ou l'autre de ces surfaces. La flèche (13) peut être mise en oscillation autour de l'axe de l'entretoise (14) afin de rapprocher de l'opérateur la charge portée par la grue.

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