Patent · US Expired

Dimensionally stable thermoplastic semifinished product

US5292570A · kind A · utility

1Cited by

12References

5Claims

0Family size

Assignee

Menzolit GmbH · DE

Inventors

Gerd Ehnert · Auch, FR
Manfred Ehlers · Gondelsheim, DE
Rolf von Paumgartten · Wiesloch, DE

Key dates

Filing date	Feb 21, 1990
Grant date	Mar 8, 1994
Priority date	—
Expiry date	Feb 21, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/50
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A semifinished product formed from fiber reinforced thermoplastic material, with the semifinished product including a solid covering of fibers and thermoplastic material, which resolidifies, after melting, and a felt or wadding-like core of a fiber-polymer mixture. The core may be formed from a compressed material and the semifinished product may have either a cylindrical or oval shape. The solid covering has a thickness of less than 20% of the radius of the semifinished product, with the thickness preferably being a maximum of 10 millimeters.

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