Patent · US Expired

Electromagnetic relay with zig-zag armature spring

US4628290A · kind A · utility

0Cited by

4References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joachim Naser · Nuremberg, DE
Olaf Schmid · Schwabach, DE
Gerhard Schmidt · Graz, AT
Theodor Sturm · Sachsen, DE
Berthold Walter · Oberasbach, DE

Key dates

Filing date	Jun 17, 1985
Grant date	Dec 9, 1986
Priority date	—
Expiry date	Jun 17, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01H50/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In order to define more precisely the pivot line (25) on which the armature (17) swings about the magnet yoke (12) at its line of contact therewith, the armature restoring spring (28) is made of spring wire (29) bent into meander shape. One end of it is attached to the magnet yoke and the other to an extension (31) of the armature that extends across the pivot line. A spring clip (34) is snapped over the restoring spring and onto the sides of the magnet yoke pushes the restoring spring against the magnet yoke and opposes lengthwise shifting of the armature across the edge (32a) on which it is pivoted.

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