Manufacturing method for ignition plug involves removing...

Details Manufacturing method for ignition plug involves removing... Manufacturing method for ignition plug involves removing...

2011-06-14

2011-06-14

Ton, Toan (Department: 2889)

Electric lamp or space discharge component or device manufacturi

Process

Spark plug or spark gap making

C313S118000, C123S14300R

Reexamination Certificate

active

07959482

ABSTRACT:
A manufacturing method for an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of the center electrode more inwards than a leading end of the insulator; building the insulator in an interior of the metal shell such that the leading end of the insulator is situated closer to a rear end side than the leading end of the metal shell; removing at least part of a leading end portion of the metal shell which projects from a leading end face of the insulator; and disposing the ground electrode at the leading end portion of the metal shell and welding the ground electrode and the metal shell together after the removal step.

REFERENCES:
patent: 4369756 (1983-01-01), Ezoe
patent: 7659655 (2010-02-01), Tozzi et al.
patent: 2007/0221156 (2007-09-01), Hagiwara et al.
patent: 2007/0221157 (2007-09-01), Hagiwara et al.
patent: 2007-287666 (2007-11-01), None

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