Disengageable nock for arrows

作者: Christopher L. Burkhart

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摘要: A nock for use with an arrow includes a receiver having bowstring engaging notch pin extending thereacross to capture and retain the within insert permanently attached shaft disengageably receiver. retention device, such as magnet receiver, magnetically cooperating responsive member insert, retains in engagement is pulled back. Upon release of bowstring, forward momentum overcomes force device disengages from begin its flight.

参考文章(5)
Daniel A. Summers, Arrow nock system ,(1998)
Roberto Laabs, Nocking system for archery ,(1992)
Alfio A Frantello, Arrow release for bows in archery ,(1958)
Roy K Niemeyer, Bow string nock ,(1956)