Adjustable draw roller assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 1990
Grant Date -
N/A
app pub date -
May 11, 1989
filing date -
May 31, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A motorized draw roller assembly includes a draw roller having ends mounted in bearing assemblies vertically shiftably mounted on spaced parallel supports of a frame. A device is provided on one bearing assembly for raising and lowering such bearing assembly in accordance with the direction of rotation of the draw roller shaft, the device including a threaded nut and spaced parallel cables extending from the nut over a pulley, the upper ends of the cables being fixed at an upper portion of the frame. The bearing assembly supporting the other end of the draw roller shaft is caused to shift upwardly and downwardly in precise correlation with the first mentioned bearing assembly by connecting apparatus such as pairs of hydraulic pistons and cylinders or a cable arrayed over pulleys.
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