Patent · US Expired

Sewing machine

US6923130B2 · kind B2 · utility

0Cited by

2References

7Claims

0Family size

Assignee

Dürkopp Adler AG · DE

Inventors

Christoph Heckner · Enger, DE
Markus Richter · Neutraubling, DE

Key dates

Filing date	Dec 19, 2003
Grant date	Aug 2, 2005
Priority date	—
Expiry date	Jan 7, 2024

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B57/265
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A sewing machine with a hook (8) that is drivable in rotation about a vertical axis comprises a bobbin case (21) with a lifter cam (31). A case lifter (33) is provided, having a sensing lever (40) and a lifter lever (32) that bears against a lifter cam (28). The sensing lever rests on a cam face (42) of an axial cam disk (39) which is mounted on the transmission shaft that actuates a hook-driving shaft (10).

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