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    Multipurpose powerhead
    21.
    发明授权
    Multipurpose powerhead 失效
    多功能电源

    公开(公告)号：US3838532A

    公开(公告)日：1974-10-01

    申请号：US38455373

    申请日：1973-08-01

    申请人： PRODANOVICH J

    发明人： PRODANOVICH J

    IPC分类号： A01K81/00 ,  F41B11/83 ,  F42B30/14 ,  F42B13/54

    CPC分类号： F41B11/83 ,  A01K81/00 ,  F42B30/14

    摘要： A multipurpose powerhead having a barrel member internally shaped with a chamber for receiving a cartridge is coupled to an axially aligned body member. A firing pin member projects above the surface of the body member and reaches into the cartridge chamber. A cylindrically shaped mass having an axial bore is slidably carried on the body member and a helical biasing spring urges the mass toward the firing pin member. When the powerhead is deployed by a rapidly accelerating surgical-rubber-tubing speargun, the inertial drag of the cylindrical mass overcomes the biasing force of the biasing spring. A resiliently mounted spur secured to the cylindrical mass overrides and engages a retaining rim to cock the powerhead during the deployment stage. When the muzzle of the barrel member impacts against a target, such as a large fish, the powerhead is arrested from further travel. Meanwhile, the forward momentum of the cylindrical mass pulls the resiliently mounted spur from its engaged position on the annular retaining rim. This forward momentum is augmented by the biasing force of the biasing spring which accelerates the cylindrical mass toward the firing pin member at an increasing velocity. The combined force attributed to the forward momentum and the biasing force is sufficient to detonate the cartridge when the cylindrical mass strikes the firing pin. Having all the moving parts exposed to the ambient water prevents the collection of impurities and the consequent jamming of the powerhead.

    摘要翻译： 具有内部形状的桶状构件的多功能动力头与用于容纳筒的腔室联接到轴向对准的主体构件。 击打销构件突出在主体构件的表面上方并进入暗盒室。 具有轴向孔的圆柱形块可滑动地承载在主体构件上，并且螺旋偏压弹簧将质量推向撞击销构件。 当动力头由快速加速的外科橡胶管螺旋桨部署时，圆柱体的惯性阻力克服了偏置弹簧的偏压力。 固定到圆柱形块体上的弹性安装的支杆覆盖并接合保持边缘以在展开阶段使动力头旋转。 当枪口的枪口撞击目标，如大型鱼类时，动力头被进一步的旅行逮捕。 同时，圆柱形物体的向前动量将弹性安装的支线从其接合位置拉到环形保持边缘上。 该向前的动量通过偏置弹簧的偏置力增加，该偏置弹簧以增加的速度将圆柱形质量加速到撞击销构件。 归结于向前动量和偏压力的组合力足以在圆柱形质量撞击击球时引爆筒。 将所有活动部件暴露于环境水中可防止杂质的收集和动力头的干扰。

    Spear having frangible nose with explosive device to be detonated on impact
    22.
    发明授权
    Spear having frangible nose with explosive device to be detonated on impact 失效
    具有易爆装置的爆炸装置的冲击力将受到影响

    公开(公告)号：US3599569A

    公开(公告)日：1971-08-17

    申请号：US3599569D

    申请日：1969-03-20

    申请人： OLAF HEARTNESS

    发明人： HEARTNESS OLAF

    IPC分类号： A01K81/00 ,  F42B12/36 ,  F42B30/14 ,  F42B13/54

    CPC分类号： F42B30/14 ,  A01K81/00 ,  F42B12/362

    摘要： A disposable, explosive spear head with a frangible nose section weakened in a predetermined manner and including a gas expansion chamber to burst the nose portion with an explodable cartridge arranged in the chamber and in a fixed position relative to the main spear casing and in the path of travel of a firing pin captivated in the spear and adapted to be driven into the firing pin against a spring-biasing means to ignite the cartridge and burst the nose portion.

    Underwater ammunition
    23.
    发明授权
    Underwater ammunition 失效

    公开(公告)号：US3585934A

    公开(公告)日：1971-06-22

    申请号：US3585934D

    申请日：1967-11-24

    申请人： AAI CORP

    发明人： MUELLER KENNETH E ,  CRITCHER JOHN L

    IPC分类号： F42B30/14 ,  F42B13/54

    CPC分类号： F42B30/14 ,  Y10S102/703

    摘要： Underwater ammunition is disclosed, in which a flechette projectile is enclosed within the air-filled bore of a watertight sealed disposable barrel adapted to be removably inserted into a carrier cylinder or block for firing. The projectile is suspended by and between a rear-end-cradling pusher sabot, and a frangible guiding-and-supporting unit including a soft rubber nosesupporting cradle slug having a forward relieved surface. A propellant charge and percussion primer are disposed rearwardly of the pusher sabot which is initially anchored by a shear pin, and the projectile is propelled forward by primer ignition of the propellant to shear the shear pin and impart forward motion to the pusher sabot, which in turn drives the projectile through a frangible sealed front barrel convexly domed cover. Forward motion of the sabot is stopped by successive incremental energy absorption through the shearing of an external helical shear thread on the forward section of the pusher sabot at the forward end of its travel, the shearing and compaction of which shear thread, as well as the resultant compaction of a soft malleable length of material in the thread grooves, also seals in the propellant gases within the barrel bore at the end of the sabot forward travel. One or more pressure dropping annular expansion grooves on the rear section of the pusher sabot are employed to obviate blowby of propellant gases during forward motion of the sabot.