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Backlash in gearing arises from the space between gear teeth and allows meshed gears to move freely to certain extent.
In a quartz watch, particularly the seconds hand, this backlash can cause a visual alignment between the hand and the indices.
The objective of the patented technnoloy is to reduce backlash at a reduced manufacturing cost from the method, itself…
Citizen's new backlash reduction patent (JP2022191040A granted 2024)
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