Telescopic crane boom section and a process for making sure

Details Telescopic crane boom section and a process for making sure Telescopic crane boom section and a process for making sure

1998-03-12

2000-08-08

Brahan, Thomas J.

Traversing hoists

Boom or mast

52118, B66C 2304

Patent

active

06098824&

ABSTRACT:
A telescopic boom section for a mobile crane including an upper inverted U-shaped longitudinal section and a lower convexo-concave longitudinal section. The upper section and the lower section are welded to each other along the seams formed by the longitudinal edges of the upper and the lower sections such that the concave surface of the lower section and the U-shaped wall of the upper section defines a cavity therewithin. The lower section includes a plurality of arcuate segments disposed sequentially across the concave surface and which are formed by a cold roll die.

REFERENCES:
patent: 3931698 (1976-01-01), Ebersold
patent: 4016688 (1977-04-01), Tiffin et al.
patent: 4337601 (1982-07-01), Vaerk et al.
patent: 5628416 (1997-05-01), Frommelt et al.
patent: 5865328 (1999-02-01), Kaspar
patent: 5884791 (1999-03-01), Vohdin et al.

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