Therm-O-Disc, Incorporated

Christine M Hudson

Prasad S Khadkikar

Jeffrey A West

Richard E Welch

Derek J Rose

Richard L Gerich

Douglas E Prather

Douglas J Kempf

A thermal cutoff member and compositions used to manufacture such members are described herein as including at least two organic compounds which, when sufficiently combined, give rise to a component which has a lower melt transition temperature than the initial organic compounds prior to combining the same. The thermal cutoff member is generally utilized in a thermal cutoff construction having an electrical switching unit that changes its operating condition when the member therein melts by being heated to a certain temperature for the particular material that forms the member being utilized.

Thermal cutoff construction compositions

An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue pipe construction comprises inner and outer concentric flue pipes which define an air space therebetween and one or more valve arrangements associated therewith to selectively restrict air flow through such air space. The valve arrangements include a thermally responsive actuator operative to open and close the valve member in response to heat generated by firing of the burner assembly without the need for any external power supply or interlocks.

Flue pipe control

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Hudson, OH, United States of America

Christine M Hudson