Switch contact arrangement with an erosion display for the...

Details Switch contact arrangement with an erosion display for the... Switch contact arrangement with an erosion display for the...

2006-05-16

2006-05-16

Enad, Elvin G (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S244000

Reexamination Certificate

active

07045731

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.

REFERENCES:
patent: 6150625 (2000-11-01), Marchand et al.
patent: 6188031 (2001-02-01), Turkmen
patent: 6225585 (2001-05-01), Turkmen
patent: 1 764 678 (1958-04-01), None
patent: 1 092 101 (1960-11-01), None
patent: 10 92 101 (1960-11-01), None
patent: 1 360 837 (1974-07-01), None
patent: 1 360 837 (1974-07-01), None
Siemens, “Siemens 3WN6 AC Circuit-Breaker Operating Instructions”, 1998, pp. 1-31, Order No. 3ZX1812-0WN60-0AN4 / 9239 9757 174, Siemens AG, Germany.

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