초록 ▼

In a non-electric system for initiating explosives, a shock tube is initiated by the detonation of a low-energy detonating cord (LEDC) whose wall has been placed adjacent to an initiation-sensitive region of a thin membrane in the shock tube, or in a capping member to an open end of a shock tube or

In a non-electric system for initiating explosives, a shock tube is initiated by the detonation of a low-energy detonating cord (LEDC) whose wall has been placed adjacent to an initiation-sensitive region of a thin membrane in the shock tube, or in a capping member to an open end of a shock tube or in a capping member to the detonator itself, wherein the inner surface of the bore of the shock tube or the end-capping member is coated with a reactive composition of an explosive or a deflagrating compound. The end capping member fits over and seals the open end of the shock tube or fits in and seals a detonator with or without a shock tube in it, acting as a shock tube itself. The thin membrane accepts the detonation from the LEDC, whereby the shock tube or capping member is initiated and relays a pressure pulse to the shock tube or the detonator affixed thereto. Novel shock tubes, shock tube/detonator units, and a detonator for use in the hybrid shock tube/LEDC system are disclosed.

대표청구항 ▼

[ I claim:] [1.] An assembly for transmitting a detonation impulse to an explosive charge non-electrically comprising:(a) a donor element comprising a length of low energy detonating cord (LEDC) having an axial continuous core of a detonating explosive composition containing about from 0.1 to 1.3 gr

[ I claim:] [1.] An assembly for transmitting a detonation impulse to an explosive charge non-electrically comprising:(a) a donor element comprising a length of low energy detonating cord (LEDC) having an axial continuous core of a detonating explosive composition containing about from 0.1 to 1.3 grams of crystalline high explosive per meter length;(b) a shock receptor-transmitter element comprising a tubular member adapted to accept and propagate a pressure wave within a gas channel, said tubular member including an elongated hollow tube forming said gas channel and having a wall coated on its inner surface with a reactive substance, wherein at least one section of said wall is thinned to form a membrane which is sensitive to initiation by the detonation of said LEDC when positioned in initiation relationship thereto, the thickness of said initiation-sensitive membrane being about from 0.1 to 0.8 millimeter;(c) connecting means for positioning said length of LEDC in initiation relationship with the initiation-sensitive membrane of said shock receptor-transmitter element; and(d) a detonator attached to an end of the shock receptor-transmitter element.