Spin speed measuring device for spinning toy device
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United States of America Patent
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Aug 22, 2017
Issued Date -
N/A
app pub date -
Apr 20, 2016
filing date -
Apr 27, 2015
priority date (Note) -
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Abstract
A spin speed measuring device almost free of malfunction is provided at low cost. The spin speed measuring device includes a casing, a spinning body pivotally supported in the casing, a pinion gear configured to spin together with the spinning body, a belt having a rack and a plurality of indicators, the rack being configured to mesh with the pinion gear, and a detector attached to the casing to detect the indicator passing by. The spin speed measuring device measures the spin speed of the spinning body. A spin speed of the spinning body is calculated from a time period from when one of the indicators passes by to when another one of the indicators passes by, the time period being obtained using signals output from the detector.
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