Patent · US Expired

Tubular member, especially for a safety steering column for motor vehicles

US4577736A · kind A · utility

7Cited by

5References

4Claims

0Family size

Assignee

Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftung · DE

Inventors

Bernd Bongers · Tauberbischofsheim, DE
Horst Bansemir · Munich, DE

Key dates

Filing date	May 21, 1984
Grant date	Mar 25, 1986
Priority date	—
Expiry date	May 21, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S138/02
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a tubular member, especially for safety steering columns for motor vehicles, made of wound fiber-reinforced materials. The winding angle of the fibers or fiber belts amounts to essentially .+-.45.degree. relative to the tube's longitudinal axis. For taking up high torsional moments and simultaneously low compressive and buckling or bending loads, the tubular member (1) has an expanded outwardly bulging section (3) extending around the entire circumference of the tubular member. This bulging section is preferably a double conical outward bulge. The fibers (2) cross each other at an angle of essentially 90.degree. even in the region of the outwardly bulging section (3), which means that the winding angle of essentially .+-.45.degree. to the tube's longitudinal axis is maintained in the region of the outwardly bulging section (3).

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