Patent ID: 6702543
Filing Date: 2004-03-09
Classification: B65G

Abstract:
A device for controlling movement of skips in machines for treatment of granular or powder and liquid materials, in which the skip is separable from an overlying treatment chamber, to which treatment chamber the skip is sealing couplable, and which skip is rotatably supported, by means of a horizontal-axis pivot (2), on a frame (3) mobile on wheels (4); wherein the device comprises:at least one hydraulic jack provided with a hydraulic cylinder fixed to the frame and a first and second piston slidably engaged within the hydraulic cylinder; the pair of piston being spaced apart on a rack fixed between the first and second pistons; a pinion on the horizontal-axis pivot rotatably engaged to the rack; the hydraulic cylinder having an inlet and outlet for hydraulic fluid reciprocally connected in a closed circuit including one regulation valve; wherein the regulation valve when turned either clockwise or counterclockwise initiates a flow of fluid against either the first piston or the second piston which moves the corresponding piston and the rack which rotates the pinion.