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US 4,629,176 AGranted
Paper gripper bar
AssigneeXerox Corporation
InventorTheodorus M. Ceelen
Life of this patent
Estimating the term…
Abstract
An improved paper gripper bar is described. The upper and lower portions are made from extruded aluminum and hinge together for their entire length for greater stiffness. Two or three spring clips provide a bias for closing the bar. The paper is held between the bottom ends of the spring clips and the upper bar when the bar is in the closed position. Finally, the clips are assembled into grooves in the upper and lower portions so that no additional parts are required to maintain the gripper bar parts in their proper positions.
Claims5
A paper sheet gripper bar, for gripping a paper sheet, comprising:
- an upper gripper and a lower gripper, each of said grippers extending the length of said sheet, and being fabricated from a single rigid piece of material, the rear edges of said grippers being shaped to interlock to form a hinge,
- a plurality of springs, each spring exerting a force tending to close the space between the front edges of the grippers,
- each of said springs comprising a flat piece of spring material bent into a shape which encircles the top, rear and bottom of said bar, and having a lower end further bent upward to grip the paper between said lower end and said upper gripper when the bar is closed on a paper.
Dependencies are inferred from the claim text.