Patent · US Expired

Electromagnetic switchgear

US4876522A · kind A · utility

4Cited by

0References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Norbert Mitlmeier · Ursensollen, DE
Bardo Koppmann · Feldkirchen-Westerham, DE

Key dates

Filing date	Sep 23, 1988
Grant date	Oct 24, 1989
Priority date	—
Expiry date	Sep 23, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH01H50/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electromagnetic switchgear having a housing top and a bottom plate is constructed such that the bottom plate is resiliently held relative to the housing top to avoid damaging the housing top and bottom plate during operation. Elastic damping elements are interposed between the bottom plate and the housing top by screwing the bottom plate to the housing top. The bottom plate suspension is especially suitable for electromagnetic switchgear, such as contactors.

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