Igniter for oxygen lance for thermal cutting, drilling etc.

Metallurgical apparatus – Means for cutting solid metal with heat – e.g. – blowpipes

Reexamination Certificate

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Details

C148S196000

Reexamination Certificate

active

07052646

ABSTRACT:
In accordance with the method and the device according to the invention, previous pure pyrotechnic primers for initiating the ignition charges (6a,6b) of the oxygen lance igniters (13) are replaced by a small quantity of powdered zirconium (7). Zirconium is pyrophoric and therefore ignites, providing it has a sufficiently large surface area, in the presence of a sufficient quantity of pure oxygen, although in ordinary air it is no more flammable than ordinary wood.

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patent: 889329 (1981-12-01), None

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