Thermal measuring and testing – Housing – support – or adjunct
Patent
1991-09-30
1993-03-30
Cuchlinski, Jr., William A.
Thermal measuring and testing
Housing, support, or adjunct
374140, 136230, 136232, 136234, G01K 112
Patent
active
051978059
ABSTRACT:
A protective tube is provided for a temperature sensor. The protective tube includes an inner metal tube including a chamber for containing a temperature sensor, an intermediate refractory sleeve surrounding and abutting at least a portion of the inner metal tube, and an outer refractory sleeve cast onto the intermediate refractory sleeve. The outer refractory sleeve covers the intermediate refractory sleeve and the inner metal tube inside the intermediate refractory sleeve. The intermediate refractory sleeve is made of an elastic material such as a ceramic refractory paper or coating or a fiberglass material that deforms during expansion and contraction of the inner metal tube and the outer refractory sleeve with changing temperature. The intermediate refractory sleeve provides a buffer between the inner metal tube and the outer refractory sleeve to minimize rupture of the outer refractory sleeve which might otherwise occur during expansion and contraction of the tube and sleeve with changing temperature.
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Cuchlinski Jr. William A.
Pyromation, Inc.
Worth W. Morris
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