Patent · US Expired

Electric snap-action switch

US4058693A · kind A · utility

2Cited by

2References

9Claims

0Family size

Assignee

K. A. Schmersal & Co. Schaltgeratefabrik

Inventors

Siegfried Schulz · Rolling Meadows, US
Karl-Georg Eicker · Remscheid, DE
August Reinke

Key dates

Filing date	Sep 22, 1975
Grant date	Nov 15, 1977
Priority date	—
Expiry date	Sep 22, 1995

Classification

Technology area (CPC H)Electricity
CPC primaryH01H5/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A snap-action switch having a housing, a push button and return springs therefor, a pair of contact assemblies and a pair of contact bridges between the contact assemblies, a jump member to alternately move the contact bridges against and away from the contact assemblies, a single stationary magnet on the housing, the jump member including a soft iron leg or plate to engage and be retained by the magnet, and the jump member also including a soft iron armature or plate movable with respect to the leg of the jump member toward and away from the magnet, and a bias spring alternately bearing at one end against the push button and jump member and alternately bearing at the other end through a thrust member or plate to the soft iron armature and the push button.

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