Patent ID: 11962131
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method for manufacturing an electrical device, the method comprising:
providing or forming a first metal oxide layer and a second metal oxide layer, such that each of the first and second metal oxide layers includes an outer surface and an inner surface with the inner surface defining a pocket such that a perimeter of the inner surface is raised relative to a floor of the pocket;
forming first and second inner electrodes on the inner surfaces of the first and second metal oxide layers, respectively;
forming first and second outer electrodes on the outer surfaces of the first and second metal oxide layers, respectively; and
joining the raised perimeters of the inner surfaces of the first and second metal oxide layers with a glass seal, such that the pockets of the inner surfaces of the first and second metal oxide layers and the glass seal define a sealed chamber enclosing a gas therein, such that the first outer electrode, the first metal oxide layer and the first inner electrode form a first metal oxide varistor (MOV), the first inner electrode, the second inner electrode and the sealed chamber with the gas form a gas discharge tube (GDT), and the second inner electrode, the second metal oxide layer and the second outer electrode form a second MOV, such that the electrical device includes the first MOV, the GDT and the second MOV electrically connected in series with the first inner electrode being a common electrode between the first MOV and the GDT and the second inner electrode being a common electrode between the GDT and the second MOV.