Electrical igniters

Details Electrical igniters Electrical igniters

1978-03-10

1980-01-08

Lazarus, Richard B.

Metal working

Barrier layer or semiconductor device making

Barrier layer device making

H01T 2102

Patent

active

041820096

ABSTRACT:
A surface-discharge igniter is formed by positioning a tubular assembly coaxially within the outer shell of a nose portion of the igniter. The assembly is welded about one end to form a seal with the outer shell, and glass material is placed within the assembly to form a seal with a central rod-shape electrode extending coaxially within the assembly. The assembly has an outer tube of the same material as the outer shell, and an inner tube which extends coaxially within the outer tube and which is of a different material, having a coefficient of thermal expansion substantially the same as that of the glass material. The inner tube is joined to the outer tube at an end remote from the seal with the outer shell. The nose portion forms the operative tip of the igniter and is welded to a rear body portion having screw threads for mounting the igniter and for making electrical connection to it.

REFERENCES:
patent: 1314129 (1919-08-01), Crowther
patent: 1360294 (1920-11-01), Hill
patent: 2029669 (1936-02-01), Nowosielski
patent: 3442693 (1969-05-01), Rea
patent: 3882338 (1975-05-01), Meyer
patent: 3995184 (1976-11-01), Insley
patent: 4028576 (1977-06-01), Wofsey

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