Aluminum alloy miniature cartridge fuses
AssigneeEaton Intelligent Power Limited
InventorsRamdev Kanapady, Hui Calvin Yang
Life of this patent
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Abstract
A fuse includes a housing with opposing first and second ends and a first and second fusible element. It also includes first and second ferrules made from aluminum alloy, each electrically connected to the corresponding first and second fusible element. Each ferrule features a side wall and an end wall, with the end wall extending from the side wall to close the first or second end of the housing. Additionally, the end wall includes a boss that extends toward the interior of the housing. Together, the side and end walls form an interior receptacle designed to accommodate the first or second end of the housing.
Claims20
A fuse comprising:
- a housing having opposing first and second ends;
- a first fusible element and a second fusible element positioned inside the housing;
- and
- first and second ferrules fabricated from aluminum alloy, wherein the first and second ferrules are electrically connected to the first and second fusible elements, each of the first and second ferrules comprising:
- a side wall;
- and
- an end wall extending from the side wall and closing the first or second end of the housing, wherein the end wall includes a boss extending toward an interior of the housing, wherein the side wall and the end wall define an interior receptacle that is sized to receive the first or second end of the housing.
A miniature cartridge fuse comprising:
- a cylindrical housing having opposing first and second ends;
- a first and a second fusible element positioned inside the cylindrical housing;
- and
- first and second deep-drawn ferrules fabricated from aluminum alloy, the aluminum alloy first and second deep-drawn ferrules fabricated to withstand pressure generated inside the cylindrical housing as a result of arcing and to stay in place after temperature or pressure changes caused by at least one of i) current or ii) arcing during short circuit events, wherein the first and second deep-drawn ferrules are respectively attached to the first and second ends of the cylindrical housing and electrically connected to the respective first and second fusible elements, the aluminum alloy being plated with nickel, each of the first and second deep-drawn ferrules comprising:
- a side wall surrounding the first or second end of the cylindrical housing;
- and
- an end wall extending from the side wall and closing the first or second end of the cylindrical housing, wherein the end wall includes a boss extending toward an interior of the cylindrical housing and defining an interior surface of the end wall, and wherein the side wall and the end wall define an interior receptacle that is sized to receive the first or second end of the cylindrical housing.
Dependencies are inferred from the claim text.