| 摘要 |
<p>1409989 Temperature responsive elements AUTOMATIC SWITCH CO 25 Feb 1974 [30 July 1973] 8406/74 Heading G1D [Also in Division G3] A thermal element, e.g. for use in fluidic apparatus (see Division G3), for compensating for thermal expansions and contractions of assembled layers of dissimilar materials, comprises a frustoconical bi-metallic washer having its concave wall defined by the metal having the higher coefficient of thermal expansion, whereby the washer tends to flatten with increases in ambient temperature. A stack of these washers may be used. The low coefficient layer may be nickel and iron and the high coefficient layer may be nickel chromium steel. The thermal element may instead be of rectangular form and arcuate.</p> |
