Patent Number: 6,296,419

Title: Device providing a connection between a pivot and a mast structure for tower cranes

Abstract: The device provides dismantlable assembly between the top of the upper element of the mast of a tower crane and the fixed pivot which serves to support and to orientate the rotating upper part of the crane comprising the jib. Fishplates are fixed at the four corners of the pivot, of square horizontal section, in the direction of the diagonal, the fishplates lying within the permissible size for transporting this pivot. Other fishplates are fixed to the four corners of the top of the mast element, on the inside of the uprights of this element. The fishplates have holes which come into alignment, and through which removable connecting pins are fitted.

Inventors: Millet; Yves (Moulins, FR), Lissandre; Michel (Yzeure, FR)

Assignee: Potain (Societe Anonyme)

International Classification: B66C 23/28 (20060101); B66C 23/84 (20060101); B66C 23/00 (20060101); E04H 012/00 ()

Expiration Date: 10/02/2018