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    • 8. 发明专利
    • AUTOMATIC AIR GUN
    • JPH03221793A
    • 1991-09-30
    • JP1561390
    • 1990-01-25
    • TOKYO MARUI KK
    • IWAZAWA TATSUO
    • F41B11/55F41B11/643F41B11/646F41B11/68F41B11/681F41B11/71
    • PURPOSE:To obviate the need of the carriage of a tank for miniaturization and high performance of the same by providing a piston in which air is sucked into a cylinder and simultaneously pressure is stored in a compression spring and further a bullet is shot by injected air, and further providing a rotary wheel for forcing the piston to withdraw while being interlocked with the piston, and a driving motor for the rotary wheel. CONSTITUTION:With the rotation of a rotary wheel 23 by a motor 27, a tooth part 24 and a rack 20 force a piston 13 to withdraw for storage of pressure in a compression spring 17, whereby the piston is instantaneously forced to advance at a non-tooth part 25 and a concave part 22 to compress air in a cylinder and jets the same from a jetting outlet 12 for shooting a bullet b. Further, with the rotation of the rotary wheel 23 a bullet supply part 4 is interlocked to cause a slide arm 45 engaged with a pin like engagement part 48 to slide against a spring 49, whereby a bullet supply outlet 41 is brought into synchronization with the withdrawal of the piston 13 for storage of the bullet. Provided a changeover lever 37 is set to a single shot position, engagement of a shear 33 with a trigger 32 is disengaged every two shot in response to the rotation of a rotary shaft. Provided the changeover lever 37 is changed over to a running fire position, a tappet arm 35 is prevented from engaging with the sprung shear 33 whereby the motor 27 is successively rotated as long as the trigger 32 is drawn, and hence a series of shooting operations are continued repeatedly.
    • 9. 发明专利
    • SHOT FIRING DEVICE FOR GAS RIFLE
    • JPH0252999A
    • 1990-02-22
    • JP20447088
    • 1988-08-17
    • MIMURA KENJI
    • MIMURA KENJI
    • F41B11/51F41B11/62F41B11/68F41B11/681F41B11/721F41B11/73
    • PURPOSE:To improve the hitting accuracy of a shot and permit the simplification of a structure by providing two sets of notches, formed on the inner surface of a slider for moving the outsides of a steel ball and an O-ring for cutting a successive projectile into the axial direction thereof and permitting the outward movement of the steel ball as well as the expansion of the O-ring. CONSTITUTION:A slider 5 is provided with a cylindrical configuration covering the peripheries of the rear part of a barrel 10, an O-ring 4 and a magazine and is permitted to slide axially. The slider 5 is provided with an annular notch 15 at the rear inside thereof while one part of a steel ball 3 is fitted into the notch 15. The slider 5 is also provided with the annular notch 16 for the expansion of the O-ring 4 on the fore inner surface thereof. An annular seal 17 for sealing is interposed between the slider 5 and the magazine 2. On the other hand, a flange 18 is formed on the rear side of the magazine 2 while a spring receiver 19 is engaged with the flange 18. A coil spring 6 is provided between the spring receiver 19 and the slider 5 and, the slider 5 is energized forward by the coil spring 6.