发明名称 Toy projectile launching device
摘要 A toy projectile launching device for launching toy projectiles includes a spring shaped as a hollow hemisphere that is capable of being at least partially inverted from a primary normally convex position to a secondary at least partially inverted loaded position. Upon release, the spring snaps back to the primary position, thereby launching the toy projectile.
申请公布号 US2008078366(A1) 申请公布日期 2008.04.03
申请号 US20070702234 申请日期 2007.02.05
申请人 MASS INSTITUTE OF TECHNOLOGY 发明人 FIENUP WILLIAM JAMES;KUDROWITZ BARRY;WALLACE DAVID
分类号 F41B7/00 主分类号 F41B7/00
代理机构 代理人
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