H - Electricity – 05 – B
Patent
H - Electricity
05
B
116/67, 327/2.51
H05B 6/64 (2006.01) H05B 6/76 (2006.01)
Patent
CA 1069185
TITLE MICROWAVE LEAKAGE INDICATOR STRIP Inventors James Y. Wong Satish C. Kashyap John G. Dunn ABSTRACT OF THE DISCLOSURE A microwave leakage indicator for ovens in the form of a strip of encapsulated liquid crystal film backed by a layer of microwave absorbing material mounted around the edge of the door and overlapping the slot between door and oven where leakage might occur. The characteristics of the liquid crystal material are chosen such that if leakage above a preset level does occur at any location around the edge of the door, the absorbing material generates heat resulting in a quickly noticeable colour change in the liquid crystal film.
273790
Dunn John G.
Kashyap Satish C.
Wong James Y.
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