Conversion of modern shotguns into muzzleloading shotguns
    61.
    发明授权
    Conversion of modern shotguns into muzzleloading shotguns 失效
    将现代霰弹枪转换成枪炮

    公开(公告)号:US4437249A

    公开(公告)日:1984-03-20

    申请号:US359272

    申请日:1982-03-18

    IPC分类号: F41A21/10 F41C9/08 F41C21/10

    CPC分类号: F41C9/08 F41A21/10

    摘要: A steel plug is inserted into a modern shotgun to convert it into a muzzleloading firearm. The plug is made for use as a breech plug in a single barrel shotgun without modifications to gun. The plug enables the shotgun to be used as a muzzle-loader with black powder and allows conversion of the gun back to its original condition by simply removing the breech plug.

    摘要翻译: 将一个钢塞插入现代霰弹枪,将其转换成枪口枪。 该插头是用作单枪弹枪中的后膛插头而不改装枪。 该插头使得猎枪能够用作具有黑色粉末的枪口装载机,并且通过简单地卸下后膛插头,可将枪转回原来的状态。

    Spectrophotometer with photomultiplier tube dark signal compensation
    62.
    发明授权
    Spectrophotometer with photomultiplier tube dark signal compensation 失效
    分光光度计带光电倍增管暗信号补偿

    公开(公告)号:US4310243A

    公开(公告)日:1982-01-12

    申请号:US86388

    申请日:1979-10-19

    IPC分类号: G01J1/44 H01J40/14 G01J3/00

    CPC分类号: H01J40/14 G01J1/44

    摘要: In a spectrophotometer including a photomultiplier tube and an operational amplifier responsive to the current from the photomultiplier tube for generating a DC voltage proportional to light intensity, a method and means for simultaneously compensating for the dark current of the photomultiplier tube and the offset of the operational amplifier so that the output voltage of the operational amplifier is zero volts under dark conditions.

    摘要翻译: 在包括光电倍增管和运算放大器的分光光度计中,响应于来自光电倍增管的电流产生与光强度成正比的直流电压的方法和装置,用于同时补偿光电倍增管的暗电流和操作偏移 放大器,使得运行放大器的输出电压在黑暗条件下为零伏特。