Expandable gears

Expandable gear 1 with meander groove.
Test setup expandable gear 1
Movement 0.5-per cent of a slant teeth spur gear. The stretch amounts to 0.5 mms in the diameter.

Expandable gear with long holes in honeycomb structure.
Test setup expandable gear 2
Movement 2-per cent of a even tooth spur gear with opposite gear. The stretch amounts to 2 mms in the diameter.

Cross section of expandable gear with meander grooves.
Cross section of expandable gear with meander grooves in honeycomb structure.

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Applied for patent

This product has been patented.