Patent · US Expired

Microprocessor-assisted sewing machine control equipment

US6647908B2 · kind B2 · utility

0Cited by

5References

10Claims

0Family size

Assignee

Dürkopp Adler AG · DE

Inventors

Bernd Meyer · Munich, DE
Sevki Hosagasi · Kaiserslautern, DE
Andree Cramer · Detmold, DE
Horst Seibert · Bielefeld, DE

Key dates

Filing date	Feb 27, 2003
Grant date	Nov 18, 2003
Priority date	—
Expiry date	Feb 27, 2023

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B69/12
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A microprocessor-assisted sewing machine control equipment is flexibly applicable for controlling the sewing machine driving motor and further electric motors which are controlled independently of or in dependence on the rotary position. To this end, a control system is allocated to each electric motor, comprising an open-loop control unit for rotary-position-independent controlling, a closed-loop control unit for controlling the electric motor in dependence on the rotary position, and a selection unit. The selection unit couples for control either the closed-loop control unit or the open-loop control unit with the electric motor, depending on whether the electric motor is controlled by closed-loop control in dependence on the rotary position or by open-loop control independently of the rotary position.

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