Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1996-03-15
1998-08-18
Werner, Frank E.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
198766, 1987501, B65G 2500
Patent
active
057947570
ABSTRACT:
A differential impulse conveyor 10, 80, 90, 100 includes a tray 12 which is driven in a forward direction at a slow speed and a backward direction at a higher speed to slide goods with respect to the tray and thereby move goods along the tray. The drive motor 26, 27 powers the tray in the forward and backward directions through a drive shaft 40 and a tray crank 66, 106 interconnecting the drive shaft and the tray. Controller 84 is provided for varying the rotational speed of the motor shaft, thereby avoiding mechanical knock in the drive system. In another embodiment, a pair of counterweights 52, 62 are provided on opposing sides of the drive shaft 40, with respective counterweight cranks 46, 56 initiating forward movement of each counterweight at a preselected offset angular position with respect to forward movement of the tray. The differential impulse conveyor of the present invention substantially eliminates mechanical knocking in the drive system, thereby extending the useful life of the conveyor and minimizing the size of the conveyor components.
REFERENCES:
patent: 501939 (1893-07-01), Heineke
patent: 3587827 (1971-06-01), Schoen
patent: 4436199 (1984-03-01), Baba et al.
patent: 5178258 (1993-01-01), Smalley et al.
patent: 5351807 (1994-10-01), Svejkovsky
patent: 5404996 (1995-04-01), Durnil
Silvester John
Svejkovsky Paul A.
Bushman Browning
Helmreich Loren G.
Svejkovsky Paul A.
Werner Frank E.
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