B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
192/18, 198/8
B65G 39/00 (2006.01) B65G 13/07 (2006.01)
Patent
CA 1094498
ABSTRACT OF THE DISCLOSURE A live roller for a roller conveyor has a torque limiting connection with drive mechanism whereby the roller is normally rotatably driven, enabling the roller to be stopped by a pre- determined resistance to its rotation. The connection com- prises a coaxial shaft portion on the roller on which a sprocket is rotatable and axially slideable. An endless chain of the drive mechanism drives the sprocket, which comprises a driving clutch member having axially opposite friction surfaces, one of which engages an opposing friction surface on a driven clutch member fixed to the shaft portion. A second driven clutch member, constrained to rotate with the shaft portion but slideable along it, has a friction surface opposingly engaging the other friction surface on the sprocket. A coiled expansion spring, surrounding the shaft portion and reacting between a lock nut threaded there- on and the second driven member, maintains the friction surfaces engaged under bias.
320248
Doro Robert J.
Smart & Biggar
LandOfFree
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