Limit switch actuator for conveyor chain take-up

Details Limit switch actuator for conveyor chain take-up Limit switch actuator for conveyor chain take-up

1995-11-13

1997-08-26

Bidwell, James R.

Conveyors: power-driven

Conveyor section

Endless conveyor

198813, B65G 2344

Patent

active

056602677

ABSTRACT:
An improved limit switch actuator for position indicating limit switches in a drive chain take-up for a power and free conveyor system includes an actuator rod which is movable relative to a take-up cylinder. A flag is attached to the actuator rod and is positioned such that, as the actuator rod is moved relative to the cylinder, the flag actuates a series of position indicating limit switches. The actuator rod is linked to a piston in the take-up cylinder via a connecting plate which is rotatable relative to the piston while the actuator rod remains stable. Thus, the piston is free to rotate under the torque effects of a take-up chain without damage to the actuator rod.

REFERENCES:
patent: 3777879 (1973-12-01), Dehne
patent: 3952864 (1976-04-01), Schlagel
patent: 4470355 (1984-09-01), Kunlzynski
patent: 4616570 (1986-10-01), Dehne
patent: 4759438 (1988-07-01), Nevo-Hacohen

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