Glow switch starter

H - Electricity – 01 – H

Patent

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306/111

H01H 9/00 (2006.01) H01J 17/00 (2006.01) H01J 61/35 (2006.01) H05B 41/08 (2006.01)

Patent

CA 1202655

Abstract of the Disclosure In a glow switch starter comprising an airtight envelope in which a dischargeable gas is contained, and an electrode assembly hermetically sealed in one end of the envelope and having a stem in which a pair of electrodes are set, one or both of which are movable electrodes, a film formed of a mixture of 40% to 90% (by weight) of metallic barium and 60% to 10% (by weight) of refractory oxide by weight is deposited on that region of the inner surface of the envelope which is spaced apart from the stem, at a rate of 0.4 mg to 12.5 mg per cubic centimetre of the envelope capacity.

429907

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