H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/130
H01H 37/76 (2006.01)
Patent
CA 1192938
-10- ABSTRACT OF THE DISCLOSURE A single use thermal switch having a tubular casing within which a mechanical isolation cage is axially movable. The cage is normally urged by a helical compres- sion spring against a fusible pellet which melts at a temperature at which it is desired to disconnect the electrical circuit. An electrically conductive contact member extending transversely through the isolation cage is normally urged by a helical compression spring toward one end of the cage and against the end of one electrical lead that is coaxial with the casing. The contact member is foldable along a line across its center. The force of the contact member pressed against the end of the lead urges the contact member to fold to cause the ends thereof to be forced against the inside wall of the casing to establish electrical connection between the casing and the lead through the contact member.
434838
Backlund Sven
Grimm Forrest R.
Elmwood Sensors Inc.
Mcfadden Fincham
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