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US 4,070,740 AGranted
Continuous production hot-setting installation
AssigneeAutomatisme & Technique
InventorGerard Bardet
Life of this patent
Estimating the term…
Abstract
A processing or heat-treatment installation for articles which are suitable for continuous automatic assembly, characterized in that it comprises a high-frequency inductor in the form of a conductor having at least one sector of low curvature (large radius of curvature) in its effective part, which sector is placed alongside the path of motion of the workpiece and on a level with the surface to be heated.
Claims6
A spark plug processing apparatus comprising:
- means for pre-heating spark plug bodies;
- means for setting said spark plug bodies;
- means for continuously conveying said spark plugs from the input of said pre-heating means, through said pre-heating means, then through said setting means and to the output of said setting means;
- said pre-heating means including a high frequency inductor in the form of a conductor;
- said conductor having two parallel sectors with no more than a low degree of curvature whereby the lines of force of the field produced in said sector are substantially concentric circles;
- a portion of each spark plug body having a thinner cross-section than the remainder of said body;
- said conveying means moving said portion of said spark plug bodies along the lengthwise dimension of said conductor, between said sectors and on a level with said sectors whereby said spark plug bodies are heated and the heating of each spark plug body is concentrated generally in said portion;
- and
- said setting means including a continuously operating turntable, a setting turret assembly having slide blocks for applying setting pressure to the plug bodies, and resilient means for metering the pressure applied whereby said portion of each spark plug body is deformed.
6 more elements
Dependencies are inferred from the claim text.