Vacuum switching tube with a helical current path

Details Vacuum switching tube with a helical current path Vacuum switching tube with a helical current path

1983-08-18

1985-05-07

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, 200147A, H01H 3366

Patent

active

045160040

ABSTRACT:
A vacuum switching tube having an evacuated housing in which contacts are disposed movable relative to each other and an improved current lead for such a vacuum tube are disclosed. The current lead comprises a core and a jacket surrounding the core. The core is made of a material with low electric conductivity compared to the jacket and has a helical outer contour. The core can be made by twisting a rod of polygonal or star-shaped cross section. A jacket of a material with relatively high electrical conductivity and with a smooth cylindrical outer contour is applied to the core. The jacket is joined to the core firmly without space between them or is made in one piece with the core.

REFERENCES:
patent: 3158722 (1964-11-01), Porter
patent: 3263050 (1966-07-01), Pflanz et al.
patent: 3711665 (1973-01-01), Dethlefsen
patent: 4151391 (1979-04-01), Rolff et al.
patent: 4459446 (1984-07-01), Wolf

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