Passively detonated explosively-assisted fuse
AssigneePhoenix Electric Co., Ltd.
InventorHerbert M. Pflanz
Life of this patent
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Abstract
An explosively-assisted fuse is passively triggered (without electronics) by means of an auxiliary fuse in series with the main conductor. The auxiliary fuse provides a detonating voltage across a gap formed therein on melting in response to a fault current. The auxiliary fuse is configured to facilitate sizing for a variety of current loads with a standard fuse configuration.
Claims13
In an explosively-assisted fuse having a main current conductor, explosive charge proximate to said conductor for severing said conductor when said charge is detonated, a detonator responsive to a voltage applied thereto for detonating said charge, and a main fuse in parallel with said main conductor for receiving current from said conductor when said conductor is severed, the improvement comprising
- an auxiliary fuse in series with said main conductor and providing a voltage across opposite ends thereof on melting in response to fault currents therethrough, and
- means connecting said detonator across said auxiliary fuse for receiving a detonating voltage therefrom.
An explosively-assisted fuse having a main current conductor, explosive charge proximate to said conductor for severing said conductor when said charge is detonated, a detonator responsive to a voltage applied thereto for detonating said charge, and a main fuse in parallel with said main conductor for receiving current from said conductor when said conductor is severed, the improvement comprising
- an auxiliary fuse in series with said main conductor and, together with said conductor, in parallel with said main fuse, said auxiliary fuse providing a voltage across opposite ends thereof on melting in response to a fault current therethrough, and
- means connecting said detonator across said auxiliary fuse for receiving a detonating voltage therefrom.
Dependencies are inferred from the claim text.