For light loads.
Low cost.
Adaptability to mass production.
The horizontal wheel with waves on its out rim replacing teeth, meshes with either one or two sheet-metal pinions. They have specially formed teeth and mounted on intersecting axes.
STEP files of this video:
http://www.mediafire.com/file/kvmcl154kuqmfs0/SheetGear7STEP.zip
Inventor files:
http://www.mediafire.com/file/62v3kevi3vy2cz2/SheetGear7Inv.zip
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