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US 4,035,905 AGranted
Wet electrolyte valve metal capacitor with a free-form encapsulant
AssigneeSprague Electric Company
InventorWarren J. Clement
Life of this patent
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Abstract
A plastic impregnation header has two holes through which two leads of a dry electrolytic capacitor section are threaded. The header is seated against the section. The header has a tubular portion extending away from the section. The section is dip coated in an epoxy resin mixture so as to encapsulate the section, a portion of the extending leads and the header. After curing the encapsulant, the section is impregnated with a liquid electrolyte through the tube and the tube is sealed closed.
Claims11
A method for making a wet electrolyte capacitor having a free-form encapsulant comprising:
- a. connecting to an electrolytic valvemetal capacitor section, two lead wires that extend from an end of said section in the same direction;
- b. threading said leads through a plastic impregnation header via two parallel holes being provided therefor in said header;
- c. seating said header against said end of said section;
- d. applying and curing a free-form encapsulating coating to said section to a portion of said lead wires and to said header, a third hole extending through said header outwardly from said section, said third hole extending from said section in said direction of said leads;
- e. impregnating said encapsulated section by passing a wet electrolyte into said end through said third hole;
- and
- f. sealing closed said third hole at the opposite end from said section.
4 more elements
Dependencies are inferred from the claim text.