Telescopic crane jib part with cross sectional segments of...

Details Telescopic crane jib part with cross sectional segments of... Telescopic crane jib part with cross sectional segments of...

2007-03-22

2009-08-25

Brahan, Thomas J. (Department: 3654)

Traversing hoists

Boom or mast

Extensible by sliding sections

Reexamination Certificate

active

07578402

ABSTRACT:
A telescopic crane jib part has a top profiled part and a bottom profiled part joined together at joining points. The top profiled part and the bottom profiled part, on a side of the cross-section defining one-half of the cross section that is symmetrical with respect to the vertical mid-plane, each comprise, starting from the joining point of the profiled parts, at least a less pronounced outwardly curved segment and a more pronounced outwardly curved segment. Mutually adjoining end segments of the top and bottom profile parts meet at the joining points and extend outwards forming an angle.

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