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    • 27. 发明申请
    • LEAD-FREE PRIMERS
    • 无铅PRIMERS
    • US20090223401A1
    • 2009-09-10
    • US12397420
    • 2009-03-04
    • John W. FronabargerMichael D. Williams
    • John W. FronabargerMichael D. Williams
    • F42C19/12C07D271/12C06B25/34C06B31/12C06B31/24
    • C06C7/00F42B3/124F42B3/128
    • Embodiments of the present subject matter provide an improved percussion primer composition and improved hot-wire igniter acceptor, wherein lead styphnate is replaced with a lead-free material, 4,6-dinitro-7-hydroxybenzofuroxan, potassium salt (KDNP). Embodiments of the percussion primer composition include KDNP, a sensitizer, an oxidizer, calcium silicide, a fuel, and a binder. Sensitizers may include tetracene. Oxidizers may include alkali or alkaline earth nitrates, oxides, or peroxides (such as barium nitrate). Fuel materials may include metals, metal sulfides, or other non-metallic materials. Common binders may include nitrocellulose based shellacs, gum arabic/poly vinyl alcohol mixtures, and guar gum/poly vinyl alcohol mixtures. Embodiments of the hot-wire igniter device include a bridgewire, an acceptor, and an output, where KDNP is the acceptor. Power supply may be in the form of constant current/voltage or current flow from a capacitor discharge. Certain embodiments utilize a variety of output formulations, such as BKNO3, black powder, and Red Dot double base propellant.
    • 本发明的实施方案提供了改进的冲击底漆组合物和改进的热丝点火器受体,其中使用无铅材料,4,6-二硝基-7-羟基苯并呋喃,钾盐(KDNP)替代苯氧基铅。 冲击底漆组合物的实施方案包括KDNP,敏化剂,氧化剂,硅化钙,燃料和粘合剂。 敏化剂可以包括并四苯。 氧化剂可以包括碱金属或碱土金属硝酸盐,氧化物或过氧化物(例如硝酸钡)。 燃料材料可以包括金属,金属硫化物或其它非金属材料。 普通粘合剂可包括硝化纤维素类紫胶,阿拉伯树胶/聚乙烯醇混合物,瓜尔胶/聚乙烯醇混合物。 热丝点火装置的实施例包括桥接器,接收器和输出端,其中KDNP是受电器。 电源可以是来自电容器放电的恒定电流/电压或电流的形式。 某些实施方案利用各种输出配方,例如BKNO3,黑粉和红点双基推进剂。
    • 29. 发明授权
    • Ignitor with stable low-energy thermite igniting system
    • 点火器具有稳定的低能量热点火系统
    • US4989515A
    • 1991-02-05
    • US390853
    • 1989-08-08
    • Michael D. KellyAlan C. Munger
    • Michael D. KellyAlan C. Munger
    • C06B33/00C06C9/00F42B3/12
    • C06C9/00C06B33/00F42B3/124F42B3/128
    • A stable compact low-energy igniting system in an ignitor utilizes two components, an initiating charge and an output charge. The initiating charge is a thermite in ultra-fine powder form compacted to 50-70% of theoretical maximum density and disposed in a cavity of a header of the ignitor adjacent to an electrical ignition device, or bridgewire, mounted in the header cavity. The initiating charge is ignitable by operation of the ignition device in a hot-wire mode. The output charge is a thermite in high-density consoladated form compacted to 90-99% of theoretical maximum density and disposed adjacent to the initiating charge on an opposite end thereof from the electrical ignition device and ignitable by the initiating charge. A sleeve is provided for mounting the output charge to the ignitor header with the initiating charge confined therebetween in the cavity.
    • 点火器中稳定的紧凑型低能量点火系统使用两个组件,即启动电荷和输出电荷。 起始电荷是超细粉末形式的铝,其压制成理论最大密度的50-70%,并且设置在与安装在集管腔中的电点火装置或桥接件相邻的点火器的集管的空腔中。 起动电荷通过点火装置在热线模式下的操作而可点燃。 输出电荷是一种高密度互锁形式的铝,其压缩至理论最大密度的90-99%,并且在与电点火装置相对的端部邻近起始电荷设置,并且由起始电荷点燃。 提供套筒,用于将输出电荷安装到点火器集管上,其中引发电荷限制在腔内。