Ceramic conveyor roll having flat-sided spring retainer for non-

Details Ceramic conveyor roll having flat-sided spring retainer for non- Ceramic conveyor roll having flat-sided spring retainer for non-

1993-03-02

1994-05-31

Bidwell, James R.

Conveyors: power-driven

Conveyor section

Live roll

198790, 432236, B65G 1302

Patent

active

053161297

ABSTRACT:
A conveyor roll for conveying heated glass sheets along a conveyor assembly is provided that comprises a fused silica roller having opposing cylindrical ends, a pair of end caps formed from a machinable steel which may be heat resistant for rotatably mounting the ceramic roller within a conveyor assembly, wherein each end cap has a tubular wall for receiving and surrounding one of the cylindrical ends of the roller, and a spring retainer for non-rotatably mounting each of the end caps to the roller. Each spring retainer includes a coil spring formed from flat sided coils helically wound around a cylindrical end of the roller, each of which coils includes bent portions and straight portions for resiliently and frictionally inter-engaging the tubular wall of the cap and the cylindrical end of the roller, respectively, despite the thermal differential expansion that occurs between the tubular wall of the cap and the cylindrical end of the roller as the roll is exposed to elevated temperatures. Each end cap includes a screw thread around its open end that threadedly engages the coils of the retainer spring and axially secures the end cap to its respective cylindrical roller end.

REFERENCES:
patent: 2950097 (1960-08-01), Tohir
patent: 3807982 (1974-04-01), Classen et al.
patent: 4242782 (1981-01-01), Hanneken et al.
patent: 4925014 (1990-05-01), Haite

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