Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Patent
1983-08-19
1986-02-04
Askin, Laramie E.
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
264273, 264274, H05K 500
Patent
active
045687951
ABSTRACT:
An insulated conductor such as an encapsulated electrical circuit is made by locating the circuit components in a preformed carrier with opposed flexible walls with an external, outwardly facing abutment in the shape of a conical opening through each wall. The internal volume between the walls of the carrier is then filled with a hot fluid insulating plastic which also fills the conical opening forming a bridge between the openings. The bridge is caused to cool and set first so that it contracts developing a lengthwise tension which draws the walls toward each other providing the formation of air space between the walls and remainder of the filling.
REFERENCES:
patent: 3226463 (1965-12-01), Wallace
patent: 3475662 (1969-10-01), Zido
patent: 3839660 (1974-10-01), Stryker
Alden Research Foundation
Askin Laramie E.
Grover James H.
Tone D. A.
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