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

Claim 0:
1. An electrical device comprising:
a first metal oxide layer and a second metal oxide layer joined with a glass seal, each metal oxide layer having 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, wherein the glass seal joins the raised perimeters of the inner surfaces of the first and second metal oxide layers, and wherein 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;
first and second outer electrodes implemented on the outer surfaces of the first and second metal oxide layers, respectively;
first and second inner electrodes implemented on the inner surfaces of the first and second metal oxide layers, respectively; and
wherein 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.