Drive roller unit

Details Drive roller unit Drive roller unit

1988-02-25

1988-12-20

Spar, Robert J.

Conveyors: power-driven

Conveyor section

Live roll

198782, B65G 1306

Patent

active

047920378

ABSTRACT:
A drive roller unit for driving articles on a conveyor track includes a drive roller which is of a hollow cylindrical configuration and which encloses therewithin an electric motor assembly for driving same as well as a transmission arrangement for transmitting the drive torque from the motor to the drive roller. The drive roller is supported in the unit in such a way as to be movable between a lowered rest position in which it is out of contact with an article on the conveyor track and a raised operative position of engaging an article to be driven thereby. The roller is raised by virtue of a reaction movement of the drive motor stator assembly, in reaction to the rotor inertia causing a resistance to rotation of the rotor when the drive unit is switched on, the stator arrangement being mounted eccentrically relative to the axis of the roller so that that reaction movement of the stator arrangement causes it to climb up towards the article to bring the roller into driving engagement therewith.

REFERENCES:
patent: 1868825 (1930-08-01), Grosjean
patent: 3698539 (1972-10-01), Schwarzbeck
patent: 3712454 (1973-01-01), McKee
patent: 4697694 (1987-10-01), Huber

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