Hollow section, in particular a tube, of long fibre reinforced plastic

US4942904A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Martin Kacza · Aachen, DE
• Hartmut Rest · Langenfeld, DE
• Eberhard Born · Cologne, DE

Key dates

• Filing date: Sep 28, 1988
• Grant date: Jul 24, 1990
• Expiry date: Sep 28, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S425/218
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In order to improve the introduction or uptake of force in a hollow section (1), in particular a tube, of long fibre reinforced plastic having an integrated force induction element (2) and to simplify its manufacture, a radial enlargement (4) is pressed into the hollow section (1) by means of a moulding body before the plastic matrix has hardened, which radial enlargement tapers into a narrow section (6) towards its free end (5), the jacket (3) which is formed in the process later enclosing an expansion element (9) with a clamping member (10) which merges into a tie rod (11), the expansion element (9) lying in a form-fitting manner against the interior of the enlargement (4,47) over the length of said enlargement.