The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2000
Filed:
Mar. 12, 1998
Applicant:
Inventors:
Assignee:
Mannesmann AG, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66C / ;
U.S. Cl.
CPC ...
212347 ; 52118 ;
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.