| 发明名称 |
WHISTLE BALL |
| 摘要 |
A ball includes a body having an outer surface. A chamber is disposed within the body and has a concave curvature in at least two orthogonal directions. An aperture defines a fluid connection between the chamber and the outer surface of the ball. Air flow across the aperture produces a whistling sound. |
| 申请公布号 |
CA2935376(A1) |
申请公布日期 |
2010.08.12 |
| 申请号 |
CA20092935376 |
申请日期 |
2009.12.22 |
| 申请人 |
CANINE HARDWARE INC. |
发明人 |
OBLACK, MARK J.;BAGLEY, JUSTIN A.;KENT, JOSEPH W.;BURGER, KYLE D. |
| 分类号 |
A63H5/00;A01K29/00;A63B39/00;A63B43/00;A63B69/40;A63H33/18 |
主分类号 |
A63H5/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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