Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1993-04-08
1995-02-07
Pellinen, A. D.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3366
Patent
active
053877713
ABSTRACT:
An axial magnetic field high voltage vacuum interrupter for interrupting the flow of electrical current in high voltage electrical circuits has a housing with a vacuum therein and two switch contacts disposed within the housing. The switch contacts are movable with respect to each other between a first position in which they are in contact with each other and a second position in which they are separated from each other by a space sufficient to interrupt the current flow through them. One or both of the switch contacts comprise a plurality of helically coiled current-carrying bars, an electrically conductive stem portion conductively coupled to the helically coiled bars at one end, and an electrically conductive contact member conductively coupled to the helically coiled bars at another end. Each of the helically coiled bars has a first portion which extends radially outward from the stem portion and a second portion which is helically coiled about an axis substantially parallel with the stem portion.
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Patent Cooperation Treaty (PCT) International Search Report mailed Jul. 13, 1994-4 pp.
Friedhofer Michael A.
Joslyn Hi-Voltage Corporation
Pellinen A. D.
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