Patent · US Expired

Switch contact arrangement with an erosion display for the switch contacts

US7045731B2 · kind B2 · utility

1Cited by

3References

8Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Detlev Schmidt · Berlin, DE
Günter Seidler · Berlin, DE
Ingo Thiede · Berlin, DE
Sezai Turkmen · Berlin, DE
Artur Wajnberg · Berlin, DE

Key dates

Filing date	Jul 30, 2003
Grant date	May 16, 2006
Priority date	—
Expiry date	Jul 30, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH01H1/0015
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a switch contact arrangement with a first moving switch contact, with a second switch contact, provided for the first switch contact and with an erosion display, for the switch contacts. The erosion display comprises an erosion pointer and a display surface or display edge. The display pointer follows the movement of the first switch contact and, on closing the contacts, then only extends over the display surface or display edge when the value for the erosion of the switch contacts is less than a given maximum value. In order to be able to shorten the display pointer in the unused condition without a special tool to give a separation from the display surface or display edge, the value of which corresponds to the value of the maximum permitted erosion of the switch contacts, at least one marking for the cutting of the display pointer is provided, whereby the marking is separated from the display surface or display edge by the maximum permitted erosion of the switch contacts.

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