Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1981-09-18
1983-09-20
Harris, George
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337232, H01H 8504
Patent
active
044059140
ABSTRACT:
A thermal fuse is comprised of a pair of internested, flat, thin metallic plates, each plate having peripheral upturned flanges along opposite edges of the plate. The flanges of the lower plate each have a notch formed therein and the upper plate has a tab extending transversely from each side through a respective notch. The notches each have a side inclined to the plate to form a ramp, the edge corners of the tabs being cammed up the ramp of the respective notches when the plates are pulled apart in a direction parallel to the plane of the plates, to lift the upper plate perpendicularly away from the lower plate so that the flat confronting surfaces of the plates are drawn apart.
REFERENCES:
patent: 2493601 (1950-01-01), Smith
patent: 3253104 (1966-05-01), Fister
patent: 4055829 (1977-10-01), Ruegsegger
Harris George
Palguta Larry J.
Young John A.
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