Electricity: conductors and insulators – Insulators – Through wall or plate
Patent
1981-07-16
1985-03-26
Askin, Laramie E.
Electricity: conductors and insulators
Insulators
Through wall or plate
65 5934, 65 5935, H01B 1726, C03C 2702
Patent
active
045075220
ABSTRACT:
A hollow sleeve is made from an electrically conductive material and is provided with an integral shelf having at least one hole extending through the shelf. A terminal pin extends through the hole in spaced relationship to the shelf. The terminal pin may be made from the electrically conductive material and may be clad with a noble metal such as platinum. Insulating material extends through the hole in the shelf and hermetically seals the hollow sleeve and the terminal pin. The insulating material may cover the shelf to increase the electrical resistivity between the terminal pin and the sleeve. The electrically conductive material has a coefficient of thermal expansion which increases at a particular rate through an extended range of temperatures with progressive changes in temperature. The insulating material has a coefficient of thermal expansion which increases at approximately the particular rate through the extended range of temperatures with the progressive changes in temperature. The electrically conductive material may be selected from a group consisting of tungsten, titanium, Inconel and stainless steel. The insulating material may be made from boric acid and the oxides of lead, silicon, titanium, zirconium and sodium.
REFERENCES:
patent: 516892 (1894-03-01), Langhans
patent: 2885826 (1959-05-01), Grieve et al.
patent: 3225132 (1965-12-01), Baas et al.
patent: 3465284 (1969-09-01), McManus
patent: 3957496 (1976-05-01), Eagan
Askin Laramie E.
Roston Ellsworth R.
Schwartz Charles H.
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