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US 2014/0177675 A1Published application
Heat detector with shape metal alloy element
AssigneeKidde Technologies, Inc.
InventorsPaul Rennie, Beth A. Dutson, Paul D. Smith, Robert G. Dunster
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Abstract
A temperature sensing system comprises a conductive tube, a shape memory alloy (SMA) element, and a detector. The SMA element is disposed to create an electrical contact with the electrical tube when subjected to at least a critical temperature, and the detector is configured to identify an alarm condition when the conductive tube and the SMA element form a closed electrical circuit.
Claims16
A temperature sensing system comprising:
- a conductive tube;
- a shape memory alloy (SMA) element disposed to create an electrical connection with the conductive tube when subjected to at least a critical temperature;
- and
- a detector configured to identify an alarm condition when the conductive tube and the SMA element form a closed electrical circuit.
1 more element
Dependencies are inferred from the claim text.