Hermetically sealed snap switch assembly with pre-use backfillin

Details Hermetically sealed snap switch assembly with pre-use backfillin Hermetically sealed snap switch assembly with pre-use backfillin

1993-07-19

1994-10-04

Luebke, Renee S.

Electricity: circuit makers and breakers

Electric switch details

Cases and bases

200306, 200332, H01H 904

Patent

active

053528581

ABSTRACT:
A hermetically sealed snap switch assembly involving a housing that includes a hermetically sealed snap switch chamber in which a projecting terminal type subminiature snap action switch is mounted in slip fit association with a similar number of depending electrically conductive open ended tubes that are adapted to, prior to use of the switch assembly involved, be respectively hermetically sealed to the switch terminal that is received in same, and be respectively electrically connected in suitable circuitry at the option of the installer, with the arrangement of the assembly being such that optionally a selected one of the depending tubes, prior to such hermetically sealing of same, may be employed for switch chamber purging and backfilling purposes, after which said sealing of same is effected. Also disclosed is a method of backfilling said switch chamber (using such backfilling option) with a switch life enhancing gas.

REFERENCES:
patent: 2806114 (1957-09-01), Se Bastian
patent: 3431378 (1969-03-01), Hellman
patent: 4434330 (1984-02-01), Geremia

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