Back to results
US 12,106,922 B2Granted
Fuse assemblies and protective circuits and methods including same
AssigneeRipd IP Development Ltd
InventorsRobert Rozman, Zumret Top{hacek over (c)}agić
Life of this patent
Estimating the term…
Abstract
An electrical fuse assembly includes a housing defining a hermetically sealed chamber, first and second terminal electrodes mounted on the housing, a gas contained in the hermetically sealed chamber, a fuse element electrically connecting the first and second terminal electrodes, and at least one spark gap between the first and second terminal electrodes. The fuse element and the at least one spark gap are disposed in the hermetically sealed chamber.
Claims13
An electrical fuse assembly comprising:
- a housing defining a hermetically sealed chamber;
- first and second terminal electrodes mounted on the housing;
- a gas contained in the hermetically sealed chamber;
- a fuse element electrically connecting the first and second terminal electrodes;
- and
- a plurality of inner electrodes serially disposed in the hermetically sealed chamber in spaced apart relation to define a series of spark gaps from the first terminal electrode to the second terminal electrode;
- wherein the fuse element and the spark gaps are disposed in the hermetically sealed chamber;
- and
- wherein:
- the plurality of inner electrodes define a series of cells each containing a respective one of the plurality of the spark gaps;
- and
- an inner surface of the fuse element is contiguous with the cells.
9 more elements
A protected electrical power supply circuit comprising:
- a surge protective device (SPD);
- and
- a fuse assembly connected in electrical series with the SPD, the fuse assembly including:
- a housing defining a hermetically sealed chamber;
- first and second terminal electrodes mounted on the housing;
- a gas contained in the hermetically sealed chamber;
- a fuse element electrically connecting the first and second terminal electrodes;
- and
- a plurality of inner electrodes serially disposed in the hermetically sealed chamber in spaced apart relation to define a series of spark gaps from the first terminal electrode to the second terminal electrode;
- wherein the fuse element and the spark gaps are disposed in the hermetically sealed chamber;
- wherein:
- the plurality of inner electrodes define a series of cells each containing a respective one of the plurality of the spark gaps;
- and
- an inner surface of the fuse element is contiguous with the cells;
- and
- wherein the fuse element is configured to disintegrate, and thereby interrupt the protected electrical power supply circuit, in response to a short circuit current from the SPD exceeding a prescribed trigger current of the fuse element for at least a prescribed duration.
13 more elements
A fused SPD module comprising:
- first and second electrical terminals;
- a module housing;
- a surge protective device (SPD) mounted in the module housing;
- and
- a fuse assembly connected in electrical series with the SPD, the fuse assembly including:
- a housing defining a hermetically sealed chamber;
- first and second terminal electrodes mounted on the housing;
- a gas contained in the hermetically sealed chamber;
- a fuse element electrically connecting the first and second terminal electrodes;
- and
- a plurality of inner electrodes serially disposed in the hermetically sealed chamber in spaced apart relation to define a series of spark gaps from the first terminal electrode to the second terminal electrode;
- wherein the fuse element and the spark gaps are disposed in the hermetically sealed chamber;
- and
- wherein:
- the plurality of inner electrodes define a series of cells each containing a respective one of the plurality of the spark gaps;
- and
- an inner surface of the fuse element is contiguous with the cells.
14 more elements
Dependencies are inferred from the claim text.