Patent · US Expired

Insertable and retractable switching device comprising a blocking bar which prevents wrong operation

US6252186A · kind A · utility

13Cited by

4References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Marc Liebetruth · Glienicke, DE
Torsten Ahlert · Sögel, DE
Ludvik Godesa · Berlin, DE
Jörg-Uwe Dahl · Altentreptow, DE

Key dates

Filing date	May 5, 2000
Grant date	Jun 26, 2001
Priority date	—
Expiry date	May 5, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH02B11/133
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A switching device has a closing device and a traversing mechanism for insertion and retraction relative to an insertion frame, where the said devices can be operated only in the OFF state of the switching device. A blocking bar having a cam element that cooperates with a carrier of an OFF operator is guided by elongated holes behind an operator's console of the switching device. The carrier and the cam element work together in such a way that the OFF operator can be pulled inward when the blocking bar is operated, thus signaling to the user that the switching device is locked in the OFF state.

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