Patent · US Expired

Closed hollow support

US4955570A · kind A · utility

10Cited by

0References

8Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Erwin Benz · Gechingen, DE
Wolfgang Rau · Renningen, DE
Rainer Bauer · Wildberg, DE
Gerd Willy · Weilmünster, DE

Key dates

Filing date	Jul 12, 1989
Grant date	Sep 11, 1990
Priority date	—
Expiry date	Jul 12, 2009

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04C2003/046
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention relates to a closed hollow support which has stiffening sections in its interior. The stiffening sections are connected with the support section and with one another. The support sections, which form the outer surface of the hollow support, are welded together along longitudianl seams and at least one of them has holes which are suitable for guiding a welding tool, a screwdriver or a riveting tool used to connect the stiffening sections.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.