Heated roller assembly

Details Heated roller assembly Heated roller assembly

1997-02-13

1998-06-30

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219216, 399333, 399334, G03G 1520

Patent

active

057737967

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).

REFERENCES:
patent: 3720808 (1973-03-01), Morrissey
patent: 4064933 (1977-12-01), Schuman
patent: 5300996 (1994-04-01), Yokoyama et al.
patent: 5485260 (1996-01-01), Mitsuya
patent: 5596397 (1997-01-01), Shimada et al.

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