Conveyors: fluid current – With means to control conveying fluid or movement of load in... – Control of conveying fluid
Patent
1997-03-27
1999-12-14
Terrell, William E.
Conveyors: fluid current
With means to control conveying fluid or movement of load in...
Control of conveying fluid
198340, 406 93, B65G 5116
Patent
active
060008849
ABSTRACT:
An air conveyor system has a blower in communication with a plenum. The blower provides air to the plenum to move the objects with respect to the plenum. The air conveyor system includes a plurality of dampers disposed at predetermined locations along the plenum with the dampers being normally open. A sensor device senses the location where the objects have accumulated with respect to the plenum. Furthermore, the air conveyor system includes a closing device for closing the damper which is at the location where the objects have accumulated with respect to the plenum. The closing of the damper is based upon the sensed accumulated location. The system includes a variable speed blower for providing air to move objects with respect to the plenum. The objects are either in an accumulated or unaccumulated state with respect to the plenum. A velocity measuring device measures the velocity of the objects, and an adjustment device which is connected to the velocity measuring device adjusts the speed of the blower to a predetermined speed based upon the velocity of the unaccumulated objects.
REFERENCES:
patent: 4515503 (1985-05-01), Snowdon
patent: 4715748 (1987-12-01), Krambrock
patent: 5220840 (1993-06-01), Ingraham et al.
patent: 5407305 (1995-04-01), Wallace
Advanced Manufacturing Technology
Crawford Gene O.
Terrell William E.
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