Conveyor with belt to roller synchronization mechanism

Details Conveyor with belt to roller synchronization mechanism Conveyor with belt to roller synchronization mechanism

2007-05-23

2008-07-08

Bidwell, James R (Department: 3651)

Conveyors: power-driven

Conveying apparatus entirely supported by mobile ground...

Conveyor shiftably mounted on vehicle

C198S315000, C198S594000, C198S812000

Reexamination Certificate

active

07395913

ABSTRACT:
A conveying device comprising a conveyor belt, a conveyor belt speed sensor, at least one extending roller selectively extendable from the device, an extending roller speed sensor, a hydraulic motor operatively engaged with the conveyor belt, a proportional valve operatively coupled with the hydraulic motor for modulating the speed of the motor, and a controller operatively connected to the proportional valve for modulating the output thereof, the controller in communication with the belt speed sensor, and in communication with the extending roller speed sensor, the controller thereby controlling the speed of the motor to obtain a desired belt speed.

REFERENCES:
patent: 3596785 (1971-08-01), Weatherford, Jr.
patent: 3826353 (1974-07-01), Greasley
patent: 5348130 (1994-09-01), Thomas
patent: 5669562 (1997-09-01), Smith
patent: 5819950 (1998-10-01), McCloskey
patent: 6416382 (2002-07-01), Bavelloni
patent: 6688450 (2004-02-01), Speers et al.
patent: 7261202 (2007-08-01), Canapa
patent: 2004/0112999 (2004-06-01), Byram et al.
patent: 2005/0173570 (2005-08-01), Tanaka et al.

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