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    • 7. 发明专利
    • AUTOMATIC GRENADE GUN
    • JPH04103994A
    • 1992-04-06
    • JP22088490
    • 1990-08-22
    • JAPAN TECH RES & DEV INSTHOWA MACHINERY LTD
    • TSUMURA HIDEICHIROIKEDA KOHEI
    • F41C27/06F41A5/16F41A5/24
    • PURPOSE:To provide a small-sized and light weight gun by a method wherein a seating with a minimum clearance is set at a free bottom part under a gas pressure accepted at a bottom surface of the gun and a gun barrel is advanced forwardly with energy attained at the rear seating. CONSTITUTION:In the event that a gun is transferred, a hook of a feeding camp plate 18 is released and a gun barrel 7 is retracted. Preparation of launching grenade is carried out such that as a grenade 13 fixed to a link belt 201 is inserted into a grenade feeding path 203, the grenade is fed toward a grenade discharging port 11 until the grenade 13 at an extreme end rides over a grenade feeding element 221. Gun firing is carried out such that a knob 112 is rotated and a striker 102 is pushed with a selector 113 positioned at its safe location. The 13 is advance within the gun barrel 7 with gas pressure grenaed at the shooting operation. A free bottom 301 that has accepted a gas pressure at a barrel bottom surface 305 is slightly moved by a distance l while pushing the free bottom spring 316. A side wall 303c pushes a movement receiving piece 402 and rotates the rotary element 401 rapidly in a clockwise direction, so that a piston rod 405 is pushed forwardly to push an abutted coupling ring 48 and then a feeding cam plate 18 is advanced. In turn, the free bottom 301 is pushed forwardly and returns to its original position, resulting in that a striker needle 317 and an igniter 319 are also returned to their original positions with a striker spring 320.