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US 4,402,395 AGranted
Method and device for preventing a flexible tubular belt from twisting for use in a tubular belt conveyer
AssigneeHaruo Okazaki
InventorKunio Hashimoto
Life of this patent
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AssigneeHaruo Okazaki
InventorKunio Hashimoto
Estimating the term…
A method and device for preventing a flexible tubular belt from twisting for use in a tubular belt conveyer are disclosed. A flexible tubular belt is extended between first and second rollers, positioned at a certain distance away from each other, on which the tubular belt is opened, and the belt moving between the two rollers in the tubular form is supported by sets of support rollers which are radially arranged around the peripheries of the belt in contact therewith and are rotatably mounted to support frames. Twisting of the belt is prevented by means which varies an angle of a correction roller extending in a direction substantially perpendicular to the direction of movement of the belt in contact therewith. The correction rollers may be disposed in contact with the bottom and/or sides of the belt.
A method for preventing a flexible tubular belt from twisting, for use in a tubular belt conveyor wherein a flexible tubular belt is extended between first and second rollers, positioned at a certain distance away from each other, on which the tubular belt is opened, and wherein the belt moving between the two rollers in the tubular form is supported by sets of support rollers which are radially arranged around the peripheries of the belt in contact therewith and are rotatably mounted to support frames, the improvement comprising the step of varying an angle of a correction roller mounted on a correction roller support and extending in a direction substantially perpendicular to the direction of movement of the belt in contact therewith, said angle being varied by shift means for shifting the correction roller in the right or left direction in response to the tubular belt twisting in the opposite direction said shift means and correction roller being operative at a point that the belt is tubular.
A device for preventing a flexible tubular belt from twisting, for use in a tubular belt conveyor wherein a tubular belt is extended between first and second rollers, positioned at a certain distance away from each other, on which the tubular belt is opened, and wherein the belt moving between the two rollers in the tubular form is supported by sets of support rollers which are radially arranged around the peripheries of the belt in contact therewith and are rotatably mounted to support frames, characterized by comprising:
Dependencies are inferred from the claim text.