发明授权
- 专利标题: Circular boomerang
- 专利标题(中): 圆形回旋镖
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申请号: US148663申请日: 1980-05-12
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公开(公告)号: US4337950A公开(公告)日: 1982-07-06
- 发明人: Kenneth N. Gidge
- 申请人: Kenneth N. Gidge
- 专利权人: Gidge Kenneth N
- 当前专利权人: Gidge Kenneth N
- 主分类号: A63B65/08
- IPC分类号: A63B65/08 ; A63F9/02
摘要:
A toy boomerang is provided in the form of a generally flat circular body having a plurality of spiral arms extending between a central hub and an outer annulus. Each spiral arm defines an airfoil providing lift to the toy when it is spun through the air. The toy is used by spinning it into the air by a swinging, snapping movement of the arm and wrist whereupon the toy will follow a rising straight trajectory to a stall point and then reverse its direction and return directly back to the thrower.
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