Patent · US Expired

Buttonhole sewing machine

US6951177B2 · kind B2 · utility

2Cited by

7References

12Claims

0Family size

Assignee

Dürkopp Adler AG · DE

Inventors

Jochen Fischer · Whitehall, US
Thomas Noltge · Bielefeld, DE

Key dates

Filing date	Dec 19, 2003
Grant date	Oct 4, 2005
Priority date	—
Expiry date	Dec 19, 2023

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B37/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A buttonhole sewing machine comprises a top arm (1) with a needle (6) movable in up and down reciprocation and a base plate (2). A buttonhole cutting device (13) is provided, having a knife (36) which is disposed on the base plate (2) and comprises a straight cutting edge (37) that extends in the y direction and an eye cutting edge (38). A cutting block (15) cooperates with the knife (36). The knife (36) and the cutting block (15) are motor-adjustable one in relation to the other in the y direction.

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