Overload detector and interrupt for conveyor chain

Details Overload detector and interrupt for conveyor chain Overload detector and interrupt for conveyor chain

1981-01-05

1983-08-02

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Endless conveyor

198814, 198856, B65G 4300

Patent

active

043961118

ABSTRACT:
A conveyor system that may be driven in a forward or a reverse direction is provided with jam detectors that are effective to interrupt the operation of the conveyor chain (10) upon encountering a jam condition in either direction of drive. The chain (10) is driven about idler sprockets (19 and 53) mounted in housings (21 and 51) that are slidably mounted on a T-bar frame (22). When the chain is driven in a forward direction A, a jam condition causes housings (21) to slide and operate a switch (23) to interrupt power to a motor (18). When the direction of drive is reversed, housing (21) is held from movement by a lock (47), and a lock (54) associated with housing (51) is released to allow the housing (51) to shift in response to a jam condition to operate a switch (58) to again interrupt the power applied to the motor (18).

REFERENCES:
patent: 1682014 (1928-08-01), Margles et al.
patent: 2794538 (1957-06-01), Schenk
patent: 3200935 (1965-08-01), Whitefield
patent: 3589504 (1971-06-01), Blough
patent: 3595372 (1971-07-01), Mojden
patent: 3861519 (1975-01-01), Ware
patent: 3905473 (1974-01-01), Jones
patent: 4157753 (1979-06-01), Garnier

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