Metal working – Method of mechanical manufacture – Electrical device making
Patent
1979-07-12
1981-08-04
Gilden, Leon
Metal working
Method of mechanical manufacture
Electrical device making
29613, 29615, 123145A, H05B 300
Patent
active
042814510
ABSTRACT:
A sheathed electric heater for use as an engine glow plug or the like is formed by providing a closed end metal sheath, installing a centered electric heating element that approaches the sheath closed end, adding a small amount of sinterable metal powder covering the end of the heating element at the closed end of the sheath, filling the remaining volume around the element with granular electrical insulating material, swaging the assembly to reduce its diameter, extend its length and compact the insulation, and sintering the metal powder by passing electric current therethrough to provide a low resistance electrical connection between the heating coil and the closed end of the sheath.
REFERENCES:
patent: 3221203 (1965-11-01), Ragland
patent: 4112577 (1978-09-01), Mann
General Motors Corporation
Gilden Leon
Outland Robert J.
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