Patent · US Expired

Buttonhole sewing machine

US6755139B2 · kind B2 · utility

1Cited by

3References

8Claims

0Family size

Assignee

Dürkopp Adler AG · DE

Inventors

Frank Pannwitz · Hövelhof, DE
Rüdiger Mörbt · Bielefeld, DE
Werner Maasjost · Verl, DE
Thomas Noltge · Bielefeld, DE

Key dates

Filing date	Aug 21, 2003
Grant date	Jun 29, 2004
Priority date	—
Expiry date	Aug 21, 2023

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B69/28
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A buttonhole sewing machine for producing buttonhole seams with seam end sections of various shapes in a work piece comprises an input equipment for feeding buttonhole parameters; and a computer for calculating, from the buttonhole parameters, sewing data that determine the respective buttonhole geometry. It further comprises a memory for storing the computed sewing data and a key to be shifted into two key statuses, by means of which to trigger conversion of a buttonhole seam from a position to the left to a position to the right or vice versa, and storage thereof.

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