Patent · US Expired

CNC controlled buttonhole sewing machine

US6722299B2 · kind B2 · utility

1Cited by

1References

10Claims

0Family size

Assignee

Dürkopp Adler AG · DE

Inventors

Thomas Noltge · Bielefeld, DE
Heinz Fransing · Melle, DE
Andreas Oberndörfer · Bielefeld, DE
Theodor Janocha · Bielefeld, DE

Key dates

Filing date	Dec 5, 2002
Grant date	Apr 20, 2004
Priority date	—
Expiry date	Dec 5, 2022

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B29/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A CNC controlled buttonhole sewing machine comprises work piece clamps with sliding drives for displacement from an initial position of spread, by a length of spread, into a final position of spread. The sliding drive is an electric positioning motor that is allocated to a work piece clamp. Further provision is made for a control unit with data storage, in which to store data, for displacement of the work piece clamp by a given length of spread.

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