Device for raising and unfolding the mast and for raising...

Details Device for raising and unfolding the mast and for raising... Device for raising and unfolding the mast and for raising...

2006-01-31

2006-01-31

Brahan, Thomas J. (Department: 3652)

Traversing hoists

Adjustable to transport or nonuse position

Crane boom supported by foldable or collapsible tower

C212S292000, C212S300000

Reexamination Certificate

active

06991120

ABSTRACT:
The device applies to a crane having multiple functions, with a modifiable configuration, which comprises a foldable mast, composed of two elements, and a distributing jib, composed of a plurality of successive elements. This device comprises a double-acting jack connecting a lower rod assembly to an upper rod assembly. The lower rod assembly is connected to the lower part of the upper mast element and to the upper part of the lower mast element. The upper rod assembly is connected to the upper part of the upper mast element and to the jib foot.

REFERENCES:
patent: 4895263 (1990-01-01), Saint Gerand
patent: 6439408 (2002-08-01), Aquino et al.
patent: 0 733 583 (1996-02-01), None
patent: 0 888 997 (1999-01-01), None
patent: 2 546 496 (1984-11-01), None
patent: 2 792 627 (2000-10-01), None
patent: 1 172 323 (2002-01-01), None
patent: 2 142 902 (1985-01-01), None

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