Heated roller assembly
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United States of America Patent
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Jun 30, 1998
Grant Date -
N/A
app pub date -
Feb 13, 1997
filing date -
Feb 13, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heated roller assembly (10) is disclosed having a thermal conductive shell (21) with an inner surface (22) and an outer surface (23). A plurality of parallel, annularly spaced apart heat pipes (31) are positioned within longitudinal channels (25) provided along the outer surface of the core (21). A thermal conductive ceramic putty or ceramic (51) overlays the heat pipes (31) and is contoured to be flush with the outer surface (23) and prevent damage to the heat pipes (31) during the turning process. An electric (17,18) heater (41) is secured to the inner surface (22) of the shell (21). End caps (15) and axle(s) (16) contain and support the assembly (10), respectively. The core (21)/pipe (31) assembly is encased in an outer sleeve (55) with a non-stick functional surface (61).
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