Thermal pellet type thermal fuse

Details Thermal pellet type thermal fuse Thermal pellet type thermal fuse

2008-04-22

2008-04-22

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

C337S407000, C337S401000, C337S409000, C337S388000

Reexamination Certificate

active

07362208

ABSTRACT:
In order to prevent erroneous operation caused by shrinking of a thermal pellet due to sublimation or softening of the thermal pellet when current is applied, a thermal pellet type thermal fuse includes a metal casing, a first lead and a second lead leading out from the metal casing, a movable electrode, a thermal pellet, a strong compression spring, and a weak compression spring. Difference in temperature is achieved at the surface of the metal casing by selecting different diameters or wires for the first lead and the second lead, or by providing a heat-radiating plate.

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