Encapsulated electrical inductive apparatus

Details Encapsulated electrical inductive apparatus Encapsulated electrical inductive apparatus

1976-12-16

1978-04-04

Truhe, J. V.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

336 96, H01F 2722

Patent

active

040829162

ABSTRACT:
An electrical inductive apparatus encapsulated in a cured mixture of rounded gravel particles and resin-coated sand particles and covered with a layer of non-porous sealant material. A method of encapsulating an electrical inductive apparatus in which resin-coated sand particles are vibrated into a quantity of gravel particles which fill the space between the enclosure and the electrical inductive apparatus. A layer of sealant material is then added before the entire apparatus is subjected to an elevated temperature which cures the resin and forms an infusible, intersticial mass of gravel and sand particles around the electrical inductive apparatus.

REFERENCES:
patent: 1947085 (1934-02-01), Hill et al.
patent: 2941905 (1960-06-01), Hofmann
patent: 3161843 (1964-12-01), Hodges et al.

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