DRIVE DISKS
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United States of America
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Issued Date -
Dec 9, 2021
app pub date -
May 28, 2021
filing date -
May 28, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Drive disks are configured to rotate a main wheel by applying a frictional force thereto. Each of the drive disks includes a base and a plurality of rollers. The base includes a first sheet metal member and a second sheet metal member. The first sheet metal member includes a first central part and a plurality of first arm parts. The second sheet metal member includes a second central part and a plurality of second arm parts. Each of the rollers has a first end and a second end. Each of the first arm parts includes a first supporting part and a second supporting part. Each of the second arm parts includes a third supporting part and a fourth supporting part. The first supporting part and the second supporting part are inclined to each other. The third supporting part and the fourth supporting part are inclined to each other.
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