US 4,095,454 AGranted

Thermal insulation demonstration device

OwnerTom Fisherinventor

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Abstract

A device for demonstrating the relative effectiveness of various types of thermal insulation having a plenum chamber, at least two cells each communicating with the plenum chamber and receiving a quantity of insulation therein, and a separate after chamber communicating with each cell and the atmosphere with a thermometer received therein. A portion of a stream of heated air under pressure discharged into the plenum chamber passes through each cell and its associated after chamber and is discharged into the atmosphere. The differences in the temperature, as indicated by the thermometers, of the stream of air passing through each after chamber provide a visual indication of the relative effectiveness of the insulation in each cell and such differences in temperature can be physically sensed by a person who successively places a hand in the stream of air discharged to the atmosphere from each after chamber.

Claims10

Dependent claims

A thermal insulation demonstration device comprising at least two insulation cells each constructed and arranged to receive a quantity of thermal insulation therein, a plenum communicating with said insulation cells and constructed and arranged to direct heated air under pressure into each of said insulation cells, a separate after chamber for each of said insulation cells, each after chamber having an inlet communicating with its associated insulation cell downstream of the communication of such insulation chamber with said plenum and constructed and arranged to receive heated air from its associated insulation chamber, a thermometer received in each after chamber, and each after chamber having a transparent portion constructed and arranged so that its associated thermometer can be visually observed and read from the exterior of the device, whereby when different types of thermal insulation are received in the insulation cells and heated air passes from said plenum through said insulation cells and into said after chambers the relative effectiveness of the different types of thermal insulation is demonstrated by the temperatures in the after chambers measured by the thermometers.

Dependencies are inferred from the claim text.