Method for making metal oxide varistors coated with passivating

Details Method for making metal oxide varistors coated with passivating Method for making metal oxide varistors coated with passivating

1994-06-28

1995-02-07

Group, Karl

Coating processes

Electrical product produced

Resistor for current control

4273762, 338 21, H01C 710

Patent

active

053874323

ABSTRACT:
There is disclosed a passivating coating composition suitable for application as a collar to metal oxide varistor valve block cylindrical surfaces comprising a mixture of 64-74 parts by weight of a glass powder, 22-35 parts by weight of water, and 0.5-2 parts by weight of an additive comprising fumed silica, clay and urea.

REFERENCES:
patent: 3938069 (1976-02-01), May
patent: 3959543 (1976-05-01), Ellis
patent: 4042535 (1977-08-01), May
patent: 4046847 (1977-09-01), Kresge
patent: 4490014 (1984-12-01), Levinson
patent: 4495482 (1985-01-01), Phillip
Abstract of Japanese Patent 58-74539 dated May 6, 1983.
Abstract of Japanese Patent 53-78048 dated Jul. 11, 1978.

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