H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/157
H01H 85/12 (2006.01)
Patent
CA 1122247
ABSTRACT OF THE DISCLOSURE The dual element fuse of the present invention has at least one fusible element and at least one mass of heat softenable material; the fusible element will respond to a short circuit to fuse and thereby assure opening of the cirucit, whereas that mass of heat softenable material will respond to a long-continued relatively-low potentially-hurtful overcurrent to soften and thereby initiate opening of the circuit. The fuse preferably has a plurality of fusible elements and a plurality of masses of heat softenable material, and a connecting ring electrically interconnects one end of each of those fusible elements. In doing so, that connecting ring keeps any higher- than-normal-electrical-resistance connection between one of those fusible elements and an adjacent heat absorber from generating so much heat that it initiates premature softening of the mass of heat softenable material which is a part thereof.
368934
Gaia Aldino J.
Urani Angelo
Mcgraw-Edison Company
Osler Hoskin & Harcourt Llp
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