| 摘要 |
PURPOSE:To perform an efficient launching of bullet at a high initial speed with a motor being applied as a power source without using any fluorocarbon gas. CONSTITUTION:There are provided a cylinder 1, a piston 2 sliding within the cylinder 1 and for pressurizing air, a ram 8 connected to the piston through a spring 9 and for reciprocating the piston 2, a crank shaft 10 connected to the ram 8 through a connecting rod 12, an opening or closing valve 6 connected between an air discharging passage 15 of the cylinder 1 and a nozzle 4, a link 13 connected to a valve body 6A of the opening or closing valve 6, an eccentric cam for driving the link 13, and a motor for rotating both the eccentric cam and the crank shaft 10. The ram 8 driven to reciprocate by the crank shaft 10 drives the piston 2 through the spring 9. |
