Use of a fusion material of copper and chrome as the contact mat

Electricity: circuit makers and breakers – Electric switch details – Contact

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H01H 102

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active

047805820

ABSTRACT:
This invention relates to a new use of a fused material of copper and chrome as a contact material for use in vacuum contactors. In addition, the invention relates also to the contact material itself and to the method of its fabrication, as well as for special contact arrangements in the vacuum contactors.
The invention shows a whole new, unsuspected range of application for the above fused materials. Up to now, contactors normally used material based on tungsten and copper which were first sintered and then immersed. It has now been experimentally shown that fused materials of copper and chrome, particularly after being reshaped, are very well suited as a contact material for vacuum contactors. Furthermore, in contact pieces of said fused material, methods are provided for additional additives to be precisely inserted by localized alloying, diffusion, or related techniques.

REFERENCES:
patent: 4048117 (1977-09-01), Emmerich
patent: 4537745 (1985-08-01), Hassler et al.
patent: 4553003 (1985-11-01), Cherry
patent: 4554425 (1985-11-01), Kashiwagi et al.
patent: 4695687 (1987-09-01), Grosse et al.

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