Snow and sleet detector
AssigneeThe Rails Company
InventorGarwood N. Burwell
Life of this patent
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Abstract
An improved snow and sleet detector having a pair of substantially parallel detector screens spaced one below the other, the upper screen being open to the ambient. A rim is included which is highly thermally conductive and electrically conductive and encompassing the upper screen proximate the edges thereof. A thermostatically controlled heater is mounted in intimate thermal and electrical contact with the rim for maintaining the rim and detector screens at a temperature high enough to melt snow or sleet falling thereon. Circuiting is described for providing an electrical indication when the detector screens are conductively coupled by melting snow or sleet.
Claims10
An improved snow and sleet detector having a pair of substantially parallel detector screens spaced one below the other, the upper screen being open to the ambient, comprising:
- a highly thermally conductive rim encompassing said upper screen proximate the edge thereof;
- heating means mounted at least partially internally in said detector in intimate thermal contact with said rim and spaced below said screens;
- and
- means for making electrical contact with said heating means and said screens.
Dependencies are inferred from the claim text.