[分享] 一種調整打擊姿勢的設備已回收
剛好看到一件美國專利，利用一個扣環還有一個桿件就可以簡單的調整打擊時的姿勢，給大家參考參考，這個專利目前還在審查中，我並非專業人士請大家參考就好，實用性我也不知道
http://i.imgur.com/7e15xWQ.jpg
https://patents.google.com/patent/US20160193516A1/en
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