Mounting sleeve for nozzle heater
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United States of America Patent
Stats
-
Mar 29, 2005
Grant Date -
Jul 31, 2003
app pub date -
Jan 22, 2003
filing date -
Jan 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mounting sleeve fits around a nozzle extending along an axis and a heating coil wrapped around the nozzle and having an outer surface generally centered on the axis. The a mounting sleeve has a sleeve-shaped bimetal body having inner and outer layers and a pair of angularly juxtaposed edges. The body is shaped and dimensioned to fit around the coil with the inner layer engaging the coil outer surface. The inner layer has a smaller coefficient of thermal expansion than the outer layer so that when heated the body contracts radially inward. Interengaging formations at the edges generally prevent radial outward expansion of the body when interengaged.
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