Patent · US Expired

Method and a multiple-needle sewing machine for sewing large area sewing material

US5974994A · kind A · utility

6Cited by

4References

26Claims

0Family size

Assignee

Nahmaschinefabrik Emil Stutznacker GmbH & Co. · DE

Inventors

Klaus Stutznacker · Frechen, DE
Hartmut Klapp · Kaarst, DE

Key dates

Filing date	Mar 20, 1997
Grant date	Nov 2, 1999
Priority date	—
Expiry date	Mar 20, 2017

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B33/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

This invention relates to a method of sewing large area sewing material consisting of plural and at least two layers, of which at least one layer is formed of an elastical material, for instance foamed material, wherein said layers are fed to the sewing unit in a superposed relationship and wherein the layer of elastical material is fed to the sewing unit in an unexpanded and preferably bulged condition and is stitched together with the layer formed of non-elastical material. Such a method offers the advantage that the formation of folds in the stitched product is prevented in a simple and inexpensive manner.

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