Patent · US Expired

Electromagnetic rotary actuator with rocking movement, in particular for impact printers

US4517538A · kind A · utility

8Cited by

2References

7Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Armin Bohg · Altensteig, DE
Horst D. Matthaei · Waldenbuch, DE
Kurt Hartmann · Duisburg, DE

Key dates

Filing date	Oct 26, 1983
Grant date	May 14, 1985
Priority date	—
Expiry date	Oct 26, 2003

Classification

Technology area (CPC H)Electricity
CPC primaryH01F7/123
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electromagnetic actuator for performing an individual stepping, switch or impact movement consists of an electromagnetic actuator and a pivoted or rocking armature moving. The rotational design of the electromagnetic actuator enables only one excitation coil to serve a plurality of magnetic gaps.

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