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Labor-saving bottle cap / Bottle

Labor-saving bottle cap

In our daily life ,it takes so much strength to open a bottle cap ,but even fail ,especially women and children .The reason is that people need to break joints of the bottle cap once ,when they open it .Therefore ,I added a outer ring under the bottle cap and its inside has three synapses for helping people open bottle caps easily .When people open a bottle cap ,they should unscrew the outer ring at first .Because of acting force ,some of three synapses strech into the joints .When the bottle cap is rotated ,the joints will be broken one by one ,and then the bottle cap will be opened easily .Using this way to open the bottle cap is easier

University

wylgzs

wylgzs
Nanchang, China

Yilong Wan,
wylgzs