发明名称 Material improvements including the addition of a third airfoil to recreational flying ring having primary and secondary airfoils
摘要 This is the recreational flying ring of U.S. Pat. No. 4,669,996 having material improvements added and made primarily to mitigate the premature curving of the flight path as the ring inherently slows in forward speed at a faster rate than rotational velocity during the flight. The improved performance of the flying ring may permit it to be used on a Disc Golf Course or as a fun toy for young people if molded in soft integral skin foam.
申请公布号 US2010304635(A1) 申请公布日期 2010.12.02
申请号 US20100655708 申请日期 2010.01.06
申请人 BERSHAK WILLIAM P 发明人 BERSHAK WILLIAM P.
分类号 A63H27/00 主分类号 A63H27/00
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