Thermal fuse with capillary action
First Claim
1. A THERMAL FUSE FOR INTERRUPTING THE CURRENT FLOW IN RESPONSE TO ITS ENVIRONMENTAL TEMPERATURE COMPRISING A SLEEVE, A PAIR OF LEAD TERMINALS EXTENDING FROM SAID SLEEVE FOR CONNECTION IN AN EXTERNAL CIRCUIT, A FUSIBLE LINK DISPOSED WITHIN SAID SLEEVE AND JOINING SAID LEAD TERMINALS, SAID FUSIBLE LINK HAVING A PREDETERMINED MELTING TEMPERATURE RANGE AND FORMING A CURRENT CONDUCTING PATH BETWEEN SAID LEAD TERMINALS, AND HOLLOW CAPILLARY MEANS AT EACH END OF SAID FUSIBLE LINK AND FORMING AN ELECTRICAL CONNECTION BETWEEN SAID LINK AND SAID TERMINALS OVERLAPPING AT LEAST A PORTION WHEREBY UPON INCREASE OF THE ENVIRONMENTAL TEMPERATURE BEYOND THE MELTING POINT OF THE LINK THE MELTED LINK IS WITHDRAWN INTO THE CAPILLARY MEANS TO PERMANENTLY SEVER THE LINK THEREBY ENSURING THAT THE CURRENT FLOW BETWEEN SAID LEAD TERMINALS IS COMPLETELY INTERRUPTED.
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Citations
1 Claim
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1. A THERMAL FUSE FOR INTERRUPTING THE CURRENT FLOW IN RESPONSE TO ITS ENVIRONMENTAL TEMPERATURE COMPRISING A SLEEVE, A PAIR OF LEAD TERMINALS EXTENDING FROM SAID SLEEVE FOR CONNECTION IN AN EXTERNAL CIRCUIT, A FUSIBLE LINK DISPOSED WITHIN SAID SLEEVE AND JOINING SAID LEAD TERMINALS, SAID FUSIBLE LINK HAVING A PREDETERMINED MELTING TEMPERATURE RANGE AND FORMING A CURRENT CONDUCTING PATH BETWEEN SAID LEAD TERMINALS, AND HOLLOW CAPILLARY MEANS AT EACH END OF SAID FUSIBLE LINK AND FORMING AN ELECTRICAL CONNECTION BETWEEN SAID LINK AND SAID TERMINALS OVERLAPPING AT LEAST A PORTION WHEREBY UPON INCREASE OF THE ENVIRONMENTAL TEMPERATURE BEYOND THE MELTING POINT OF THE LINK THE MELTED LINK IS WITHDRAWN INTO THE CAPILLARY MEANS TO PERMANENTLY SEVER THE LINK THEREBY ENSURING THAT THE CURRENT FLOW BETWEEN SAID LEAD TERMINALS IS COMPLETELY INTERRUPTED.
Specification
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Current AssigneeNorbert C. Batsch
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Original AssigneeNorbert C. Batsch
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InventorsBatsch, Norbert C.
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Application NumberUS04/552,930Time in Patent Office545 DaysField of SearchUS Class Current337/234CPC Class CodesH01H 37/761 with a fusible element form...
