公开(公告)号：US5721392A

公开(公告)日：1998-02-24

申请号：US587836

申请日：1996-01-11

申请人： Sek Kwan Chan ,  Steven John Graham ,  Graeme Allan Leiper ,  Moira Logan

发明人： Sek Kwan Chan ,  Steven John Graham ,  Graeme Allan Leiper ,  Moira Logan

IPC分类号： F42B3/198 ,  B60R21/26 ,  B60R21/264 ,  C06B45/00 ,  C06B45/14 ,  C06C9/00 ,  F42C19/08 ,  C06C5/00 ,  C06D5/00

CPC分类号： B60R21/2644 ,  C06B45/14 ,  C06C9/00 ,  F42B3/04 ,  F42C19/0803 ,  B60R2021/26041 ,  B60R2021/26047

摘要： The pyrotechnic ignition device of this invention comprises a hollow tubular coiled charge of pyrotechnic sheet material defining an ignition initiation position, the internal diameter of the charge decreasing and the wall thickness increasing over at least a portion of the charge extending from the initiation position in the direction of burning. This configuration enhances the reliability of ignition and the rate of flame development. Preferably the adjacent plies of the coiled charge are spaced apart. The preferred coiled charge also has a portion downstream from the initiation position in the direction of burning which decreases in external diameter and wall thickness in a direction extending away from the initiation position, the configuration of this portion being effective to enhance the speed and violence of burning of a main gas-generating propellant charge ignited by the coiled charge. In the preferred device a pyrotechnic sheet comprising a substrate of oxidizing polymeric film coated with an oxidizable metal, for example magnesium, is coiled around a cruciate axial former so that the end edges define helices. Conveniently the coiled charge may be formed by winding the sheet into a right cylindrical tubular coil and pushing out the coil axially from the centre in the direction of burning.

摘要翻译： 本发明的烟火点火装置包括烟火片材的中空管状盘绕电荷，其限定点火起始位置，电荷的内径减小，并且壁厚度在至少一部分电荷上从起始位置延伸到 燃烧方向 这种配置提高了点火的可靠性和火焰发展的速度。 优选地，卷绕的电荷的相邻层间隔开。 优选的卷绕装料还具有在燃烧方向上从起始位置向下游的部分，其外径和壁厚在远离起始位置的方向上减小，该部分的构型有效地提高速度和暴力 燃烧由卷绕电荷点燃的主要产生气体的推进剂电荷。 在优选的装置中，包括涂覆有可氧化金属（例如镁）的氧化聚合物膜的基底的烟火片卷绕在十字轴向成形器周围，使得端部边缘限定螺旋。 方便的是，可以通过将片卷绕到右圆柱形管状线圈中并沿着燃烧方向从中心轴向推出线圈来形成卷绕电荷。

公开(公告)号：US5665276A

公开(公告)日：1997-09-09

申请号：US659097

申请日：1996-06-04

申请人： Ian John Kirby ,  Graeme Allan Leiper

发明人： Ian John Kirby ,  Graeme Allan Leiper

IPC分类号： F42B4/30 ,  C06B21/00 ,  C06C7/02 ,  F26B5/06

CPC分类号： F26B5/065 ,  C06B21/0091 ,  C06C7/02

摘要： The invention provides an improved process for the production of a pyrotechnic or explosive device containing encased hazardous solid material wherein the material is dispersed in an inert liquid, the dispersion is formed into droplets and the droplets are solidified in a cooling medium. The solidified droplets are loaded into a casing and freeze-dried in situ in the casing to produce dry particles of the hazardous material, which may optionally be pressed within the casing, advantageously under vacuum,Only the operations (if any) subsequent to the freeze-drying need special precautions to be taken to prevent damage to personnel or equipment.The invention is advantageous for the preparation of detonators, igniters and other devices containing hazardous materials for example lead azide, lead styphnate, pentaerythritol tetranitrate and boron/potassium nitrate mixtures.

摘要翻译： 本发明提供了一种用于生产包含有害固体材料的烟火或爆炸装置的改进方法，其中该材料分散在惰性液体中，该分散体形成液滴并且液滴在冷却介质中固化。 将固化的液滴加载到套管中并在套管中原位冷冻干燥以产生有害物质的干燥颗粒，其可有选择地在真空中压在壳体内，仅在冷冻之后的操作（如果有的话） 干燥需要采取特殊预防措施，以防止人员或设备损坏。 本发明有利于制备雷管，点火器和其它含有有害物质的装置，例如叠氮化铅，邻苯二甲酸铅，季戊四醇四硝酸盐和硼/硝酸钾混合物。