초록 ▼

A thermal cycling apparatus having an upper heat chamber and a lower cold chamber positioned vertically beneath the upper heat chamber and vertically coaxial therewith whereby a material to the thermal cycle tested can be transferred between the upper heat chamber and the lower cold chamber. An exte

A thermal cycling apparatus having an upper heat chamber and a lower cold chamber positioned vertically beneath the upper heat chamber and vertically coaxial therewith whereby a material to the thermal cycle tested can be transferred between the upper heat chamber and the lower cold chamber. An externally operated flapper door within the thermal cycling apparatus separates the two chambers. The material to be thermally tested is placed in a basket constructed of suitable material which can be translated between the two chambers from a location externally of the chambers. The temperature in the upper chamber is elevated by gaseous nitrogen to a temperature up to about 1000 degrees F. and the lower cold chamber is cooled by a cryogenic liquid. Cycle testing is preformed by alternately transferring the material, i.e. 40 or more specimens at a time, between the upper and lower chambers the number of times desired.

대표청구항 ▼

A thermal cycling device comprising: a first heating chamber; a second cooling chamber vertically disposed beneath said first heating chamber; a door pivotal between an open and a closed state separating said chambers; a wire extending from said door to a location externally of said thermal cycling

A thermal cycling device comprising: a first heating chamber; a second cooling chamber vertically disposed beneath said first heating chamber; a door pivotal between an open and a closed state separating said chambers; a wire extending from said door to a location externally of said thermal cycling device for pivoting said door between said states; means extending externally of said thermal cycling apparatus for translating at least one test specimen between said chambers when said door is in said open state; means for heating said first chamber and said at least one test specimen positioned therein to an elevated temperature when said door is in said closed state; and means for lowering the temperature in said second chamber to a cryogenic temperature and reducing the temperature of said at least one test specimen to the temperature of said lower chamber when positioned therein.