Contact configuration for vacuum switches

Details Contact configuration for vacuum switches Contact configuration for vacuum switches

1998-12-21

2000-10-31

Donovan, Lincoln

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Vacuum

218128, H01H 3366

Patent

active

06140599&

ABSTRACT:
A contact configuration for vacuum switches includes two mutually opposite switch parts having a predetermined radius R.sub.K. Each switch part has slots which proceed from a center and which extend outward to form a spiral contact. The contours of the slots have a variable radius with a foot which coincides with the center of the switch part. Preferably, the slots end at a recess which has a predetermined radius R.sub.I and lies at the center of the switch part or they slightly overlap the recess, where R.sub.I .apprxeq.0.25-0.33 .multidot.R.sub.K. Specific mathematical functions can be specified for the slot contours.

REFERENCES:
patent: 4324960 (1982-04-01), Aoki et al.
patent: 4999463 (1991-03-01), Yin
patent: 5103069 (1992-04-01), Yorita
patent: 5763848 (1998-06-01), Hakamata et al.
Japanese Patent Abstract No. 64-19610 (Noda), dated Aug. 10, 1990.

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