Arm Glider
Overall shape of arm glider for resting arm:
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Priorities for the design are a low profile, a quiet rolling motion, a broad rolling distance, no damage to any table top, and a comfortable top surface for the arm. Â
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More bearings means that the pressure is distributed more evenly and that the weight is more distributed for a longer lifespan of the bearings. Â
There are walls or fences, which form the stopper lower edge, to stop the top plate from rolling off the ring or housing of ball bearings.Â
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Gliding plate separated by ball bearings from the table or pad on the table. The ball bearings are housed in a ring
Side view: bottom pad, ball housing, and top plate with stopper edge
The rolling balls between the top plate and the table surface exploits the fact that the top surface goes twice as far as the ball.Â
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The ball is not attached to either the top plate or the bottom table surface.Â
Therefore, the top plate can actually roll up to twice the width of the top plate, ignoring the width of the holding structure for the ball bearings.Â
Platform moving distance and ball bearing moving distance: The top platform moves twice as far as the ball bearings rolls, which allows smooth, long, quiet roll distances for the resting arm. Â