Patent · US Expired

Electromagnetic actuator mechanism in particular for print hammer drives

US4688012A · kind A · utility

5Cited by

4References

6Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Armin Bohg · Altensteig, DE
Ludwig Fischer · Herrenberg, DE
Bruno Gantz · Herrenberg, DE
Kurt Hartmann · Duisburg, DE
Gerhard Wolfert · Stuttgart, DE

Key dates

Filing date	Sep 22, 1986
Grant date	Aug 18, 1987
Priority date	—
Expiry date	Sep 22, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH01F7/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Upon excitation of the electromagnet, a clapper armature is pulled into an operating gap, being increasingly additionally attracted by the pole of an electromagnet yoke leg. The motional plane of the clapper armature extends perpendicularly to the plane of the magnetic flux of the yoke structure of the electromagnet.

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