发明名称 SPRING DEVICE FOR ROTATING AND LAUNCHING A PROJECTILE
摘要 A discoid target launcher. A hand-held trap employs a spring-loaded shaft mounted for limited sliding movement within an upstanding pipe and carrying a platform at its upper end. During launching, the shaft and platform are impelled by the spring and are simultaneously rotated. This propels the target from the platform vertically into the air with no appreciable recoil or shock and imparts a stabilizing spin to the target solely through frictional engagement between the rotating platform and the target.
申请公布号 US3635204(A) 申请公布日期 1972.01.18
申请号 USD3635204 申请日期 1969.07.17
申请人 JOSEPH H. PLUMB JR. 发明人 JOSEPH H. PLUMB JR.
分类号 F41J9/18;(IPC1-7):F41B7/00 主分类号 F41J9/18
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