DIAGNOSTIC FUSE INDICATOR INCLUDING VISUAL STATUS IDENTIFIER
First Claim
Patent Images
1. A diagnostic fuse indication device, the device comprising:
- a short circuit element;
a short circuit indicator electrically coupled to the short circuit element in a parallel arrangement;
an overload current element electrically coupled to the short circuit element in a series arrangement, and electrically coupled to the short circuit indicator in a series arrangement;
an overload current indicator electrically coupled to the overload current element in a parallel arrangement, and electrically coupled to the short circuit element in a series arrangement;
a first indicator material deposited adjacent to the short circuit indicator; and
a second indicator material deposited adjacent to the overload current indicator, wherein the first indicator material reacts in response to a short circuit event to reveal the short circuit indicator, and wherein the second indictor material reacts in response to an overload current event to reveal the overload current indicator.
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Abstract
Electrical fuse indicators which may be used to diagnose and identify a fault state or failure mode of the electrical fuse include in various exemplary embodiments, indicator materials such as a reactive material, which are incorporated into various fuse indicator devices to cooperate with a visually perceptible indicator portion or layer to indicate the failure mode or fault state if the electrical fuse.
39 Citations
20 Claims
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1. A diagnostic fuse indication device, the device comprising:
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a short circuit element;
a short circuit indicator electrically coupled to the short circuit element in a parallel arrangement;
an overload current element electrically coupled to the short circuit element in a series arrangement, and electrically coupled to the short circuit indicator in a series arrangement;
an overload current indicator electrically coupled to the overload current element in a parallel arrangement, and electrically coupled to the short circuit element in a series arrangement;
a first indicator material deposited adjacent to the short circuit indicator; and
a second indicator material deposited adjacent to the overload current indicator, wherein the first indicator material reacts in response to a short circuit event to reveal the short circuit indicator, and wherein the second indictor material reacts in response to an overload current event to reveal the overload current indicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A diagnostic fuse indication device, the device comprising:
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a short circuit element;
a short circuit indicator electrically coupled to the short circuit element;
an overload current element electrically coupled to the short circuit element in a series arrangement;
an overload current indicator electrically coupled to the overload current element in a parallel arrangement;
a first reactive material deposited adjacent to the short circuit indicator; and
a second reactive material deposited adjacent to the overload current indicator, wherein the first reactive material reacts in response to a short circuit event to reveal the short circuit indicator, and wherein the second reactive material reacts in response to an overload current event to reveal the overload current indicator. - View Dependent Claims (13, 14, 15)
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16. A diagnostic fuse indication device, the device comprising:
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an insulating substrate;
a short circuit indicator assembly carried by the insulating substrate, the short circuit indicator including;
a short circuit element;
a short circuit indicator electrically coupled to the short circuit element;
a reactive material deposited adjacent to the short circuit indicator, wherein the reactive material reacts in response to a short circuit event to reveal the short circuit indicator; and
a current overload assembly carried by the insulating substrate and electrically coupled to the short circuit assembly, the current overload assembly including;
an overload current element;
an overload current indicator electrically coupled to the overload current element;
a reactive material deposited adjacent to the overload current indicator, wherein the reactive material reacts in response to an overload current event to reveal the overload current indicator. - View Dependent Claims (17, 18, 19, 20)
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Specification