Thermally actuatable electrical switch construction, conductive

Details Thermally actuatable electrical switch construction, conductive Thermally actuatable electrical switch construction, conductive

1981-01-05

1982-08-03

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

174152R, 337409, 403267, H01H 3776

Patent

active

043429815

ABSTRACT:
A thermally actuatable electrical switch construction having a housing carrying an electrically insulating end plug provided with an opening passing therethrough and in which a portion of a conductive lead is disposed so that opposed ends of the lead extend beyond opposed ends of the plug and respectively define a fixed contact inside the housing and a terminal outside the housing, the portion of the lead being retained in the opening by a sealing compound disposed in the opening and extending around the portion of the lead and interlocking therewith to tend to prevent axial movement of the lead into the housing as well as to tend to prevent rotational movement of the lead relative to the end plug. The portion of the lead has a substantially cylindrical peripheral surface throughout the entire length thereof with an annular recess therein that defines an annular reduced section in the portion that has an annular peripheral surface disposed inboard of the cylindrical peripheral surface throughout its entire length and has at least one flat surface part thereof that interlocks with the sealing compound in the opening of the end plug.

REFERENCES:
patent: 306719 (1884-10-01), Clark
patent: 3770878 (1973-11-01), Dozier
patent: 4060787 (1977-11-01), Budnik

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