Patent · US Expired

Pinch ring for yarn balloons

US3979895A · kind A · utility

1Cited by

8References

23Claims

0Family size

Assignee

Institute fur Textil-und Faserforschung of Stuttgart

Inventors

Peter Ehrler · Reinheim, DE
Adolf Seidel · Reutlingen, DE
Wolfgang Joas · Reutlingen, DE

Key dates

Filing date	Sep 19, 1975
Grant date	Sep 14, 1976
Priority date	—
Expiry date	Sep 19, 1995

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01H1/425
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A pinch ring for the thread balloon of a spinning machine or twisting machine is substantially a single wire loop forming a spiral or helix. The ring may have overlapping end portions. The degree of overlap and the shape of the overlapping end portions as well as the pitch and the axial clearance between opposite points in the overlapping portions are all critical to the performance of the ring. The pinch ring defined by the invention permits substantially higher production rates without decreasing the rupture strength of the thread and provides a thread with substantially higher strength at standard production speeds.

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