High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Reexamination Certificate
2006-05-09
2006-05-09
Donovan, Lincoln (Department: 2832)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
C218S128000, C218S130000
Reexamination Certificate
active
07041929
ABSTRACT:
The invention relates to a contact arrangement for a vacuum switch tube for low-voltage power switches. The aim of the invention is to reduce the contact force required to control short circuit currents. To this end, a twin-contact contact arrangement is used wherein every contact comprises a plurality of separate individual contacts having a defined spring rate. At least one of the contact bodies (4) is configured as a two-layer spiral contact with a lower layer consisting of a highly elastic material and an upper layer (7) consisting of a highly electroconductive material. A contact coat (9) consisting of a contact material is provided on the upper layer in the outer zone of every contact arm (10).
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Banghard Johannes-Gerhard
Fieberg Klemens
Hahn Michael
Hartmann Werner
Renz Roman
Donovan Lincoln
Fishman M.
Harness & Dickey & Pierce P.L.C.
Siemens Aktiengesellschaft
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