Patent · US Expired

Friction false twisting apparatus

US4408449A · kind A · utility

5Cited by

12References

10Claims

0Family size

Assignee

Barmag Barmer Maschinenfabrik Aktiengesellschaft · DE

Inventors

Karl-Heinz Bauer · Graben-Neudorf, DE
Heinz Schippers
Peter Dammann · Remscheid, DE

Key dates

Filing date	Jun 12, 1981
Grant date	Oct 11, 1983
Priority date	—
Expiry date	Jun 12, 2001

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD02G1/087
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A yarn false twisting apparatus is disclosed which comprises a pair of circular discs which are mounted for rotation about generally parallel spaced apart axes, and such that portions of the surfaces are disposed in opposing face to face relation and define a twisting zone therebetween. In one embodiment, one of the discs is relatively thin and flexible, and such disc is resiliently biased toward the other disc only at the twisting zone. In other embodiments, both discs are relatively inflexible or rigid, and one disc is mounted to its supporting shaft by a gimbal-like interconnection and such disc is resiliently biased toward the other disc only at the twisting zone.

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