Device including a fuse
AssigneeMilwaukee Electric Tool Corporation
InventorJonathan Quenzer
Life of this patent
Estimating the term…
Abstract
A device including a conductive path for passing electric current. The device including a terminal and a spring fuse. The spring fuse is connected in the conductive path and is electrically connected to the terminal. The spring fuse includes a fixed base, an extension spring connected to the fixed base at a first end, a power path connection connected to the extension spring at a second end, a plurality of fuse pads, and one or more solder joints configured to connect the power path connection to the plurality of fuse pads. The one or more solder joints are configured to melt when a temperature of the one or more solder joints exceeds a threshold value. The power path connection is configured to retract toward the fixed base when the temperature of the one or more solder joints exceeds a threshold value.
Claims13
A device including a conductive path for passing electric current, the device comprising:
- a terminal;
- a controller;
- a sensor configured to sense a temperature and communicate the sensed temperature to the controller;
- and
- a fuse connected in the conductive path and electrically connected to the terminal, the fuse including:
- a fixed base,
- a member connected to the fixed base at a first end,
- a power path connection connected to the member at a second end,
- a plurality of fuse pads, and
- one or more bonding joints configured to connect the power path connection to the plurality of fuse pads;
- wherein the one or more bonding joints are configured to deteriorate when a temperature of the one or more bonding joints exceeds a threshold value,
- wherein the power path connection is configured to move toward the fixed base when the temperature of the one or more bonding joints exceeds a threshold value, and
- wherein the power path connection is configured to move away from the plurality of fuse pads when the temperature of the one or more bonding joints exceeds the threshold value, such that the power path connection is spaced away from the plurality of fuse pads.
A device including a conductive path for passing electric current, the device comprising:
- a terminal;
- and
- a spring fuse connected in the conductive path and electrically connected to the terminal, the spring fuse including:
- a fixed base,
- an extension spring connected to the fixed base at a first end,
- a power path connection connected to the extension spring at a second end,
- a first conductive pad positioned perpendicular to the power path connection,
- a second conductive pad positioned parallel to the first conductive pad,
- a first solder joint connected to the first conductive pad,
- a second solder joint connected to the second conductive pad;
- wherein the first solder joint or the second solder joint are configured to melt when a respective temperature of the first solder joint or the second solder joint exceeds a threshold value, and
- wherein the power path connection is configured to retract toward the fixed base and away from both the first conductive pad and the second conductive pad when the first solder joint and the second solder joint melt, such that the power path connection is spaced from both the first conductive pad and the second conductive pad.
Dependencies are inferred from the claim text.