Crane

Details Crane Crane

2007-05-08

2007-05-08

Brahan, Thomas J. (Department: 3654)

Traversing hoists

Adjustable to transport or nonuse position

Collapsible inverted 'v' frame supports boom rigging

C212S195000, C212S299000

Reexamination Certificate

active

10945454

ABSTRACT:
The within invention concerns a crane with a superstructure that rotates on a vertical axle, a boom coupled to the superstructure in such manner as to luff on a horizontal axle, luffing equipment for luffing the boom, and an operating ballast that counteracts the moment of the boom. According to the invention, the crane is characterized by an auxiliary erection frame that can be attached to the superstructure and/or the operating ballast in such manner as to project backward and can be connected with an auxiliary erection ballast for the erection of the boom.

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