Method of assembling helical resistor

Details Method of assembling helical resistor Method of assembling helical resistor

1976-09-13

1977-06-14

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Electrical device making

29469, 228173, H01C 1704

Patent

active

040287939

ABSTRACT:
A power resistor including a resistance element of metal ribbon formed into an edgewound helix, and an internal three-point support structure axially disposed within the interior of the helix. The support structure includes three insulating assemblies each having a plurality of insulators secured by longitudinal compression springs to a support bar. The support structure also includes a pair of spreaders located at opposite ends of the helix, each having three radially extending arms. Assembly of the resistor includes the steps of inserting the insulating assemblies into the interior of the helix, radially spreading the insulating assemblies against the interior of the helix, and welding the ends of the support bars to the extending arms of the spreaders.

REFERENCES:
patent: 2502044 (1950-03-01), Isaacson
patent: 2533876 (1950-12-01), Cerny
patent: 2560690 (1951-07-01), Griffes et al.
patent: 3200856 (1965-08-01), Bex et al.

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