Back to results
US 12,206,234 B2Granted
Overvoltage protection device modules
AssigneeRipd IP Development Ltd
InventorsGeorge Peppas, Alexis Chorozoglou, Panagiotis Raptis, Elias Fermelis
Life of this patent
Estimating the term…
Abstract
An overvoltage protection device module includes an electrically conductive first electrode, an electrically conductive housing electrode, and a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode. The housing electrode includes a housing end wall and a housing side wall collectively defining a housing cavity, and first and second housing members joined together at a joint. The first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall. The varistor member is disposed in the housing cavity.
Claims28
An overvoltage protection device module comprising:
- an electrically conductive first electrode;
- an electrically conductive housing electrode;
- and
- a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode;
- wherein the housing electrode includes:
- a housing end wall and a housing side wall collectively defining a housing cavity;
- and
- first and second housing members joined together at a joint, wherein the first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall;
- wherein the varistor member is disposed in the housing cavity;
- wherein the overvoltage protection device module includes an integral fail-safe mechanism including an electrically conductive, meltable member;
- and
- wherein the meltable member is responsible to heat in the overvoltage protection device module to melt and form a short circuit current flow path through the meltable member, between the first electrode and the housing electrode and bypassing the varistor member.
9 more elements
An overvoltage protection device module having a module axis and comprising:
- an electrically conductive first electrode;
- an electrically conductive housing electrode defining a housing cavity;
- and
- a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode;
- wherein:
- the housing electrode includes:
- a side wall;
- and
- a flange that projects radially inward from the side wall;
- and
- the overvoltage protection device module includes an integral fail-safe mechanism operative to electrically short circuit the first electrode and the housing electrode about the varistor member by fusing a surface of the first electrode to a surface of the flange using an electric arc.
8 more elements
An overvoltage protection device module comprising:
- an electrically conductive first electrode;
- an electrically conductive housing electrode;
- and
- a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode;
- wherein the housing electrode includes:
- a housing end wall and a housing side wall collectively defining a housing cavity;
- and
- first and second housing members joined together at a joint, wherein the first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall;
- wherein the varistor member is disposed in the housing cavity;
- and
- wherein:
- the first housing member includes a first contact surface;
- the second housing member includes a second contact surface;
- and
- the first and second contact surfaces engage one another at the joint to provide electrical continuity between the first and second housing members.
12 more elements
An overvoltage protection device module comprising:
- an electrically conductive first electrode;
- an electrically conductive housing electrode;
- and
- a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode;
- wherein the housing electrode includes:
- a housing end wall and a housing side wall collectively defining a housing cavity;
- and
- first and second housing members joined together at a joint, wherein the first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall;
- wherein the varistor member is disposed in the housing cavity;
- wherein:
- the overvoltage protection device module has a module axis;
- the overvoltage protection device module includes a varistor stack including a stack of varistor members formed of a varistor material;
- the varistor stack is electrically connected between the first electrode and the housing electrode;
- the varistor stack is disposed in the housing cavity between the first electrode and the end wall;
- the first electrode, the varistor stack and the end wall are axially stacked along the module axis;
- and
- the overvoltage protection device module includes at least one electrically conductive interconnect member connecting at least two of the varistor members in electrical parallel between the first electrode and the housing electrode.
14 more elements
An overvoltage protection device module comprising:
- an electrically conductive first electrode;
- an electrically conductive housing electrode;
- and
- a varistor member formed of a varistor material and electrically connected between the first electrode and the housing electrode;
- wherein the housing electrode includes:
- a housing end wall and a housing side wall collectively defining a housing cavity;
- and
- first and second housing members joined together at a joint, wherein the first housing member forms a first portion of the housing side wall and the second housing member forms a second portion of the housing side wall;
- wherein the varistor member is disposed in the housing cavity;
- and
- wherein the overvoltage protection device module includes an integral fail-safe mechanism operative to electrically short circuit the first electrode and the housing electrode about the varistor member by fusing first and second metal surfaces in the overvoltage protection device module to one another using an electric arc.
8 more elements
Dependencies are inferred from the claim text.