초록 ▼

A percussion-actuated instantaneous or delay detonator transmits a detonation from a first length of low-energy detonating cord (LEDC) transversely positioned adjacent the detonator\s percussion-responsive end to a U-shaped segment of a second length of LEDC held with its apex against the base-charg

A percussion-actuated instantaneous or delay detonator transmits a detonation from a first length of low-energy detonating cord (LEDC) transversely positioned adjacent the detonator\s percussion-responsive end to a U-shaped segment of a second length of LEDC held with its apex against the base-charge end of the detonator and the arms of the U extending away from the detonator. A directional connector for connecting one or more U-shaped segments of detonating cord adjacent each end of the detonator has identifiable donor- and receiver-cord-housing sections, e.g., the receiver-cord-housing section has the shape of the head, and the donor-cord-housing section the shape of the butt, of an arrow. A connector adapted to hold receiver LEDC and high-energy detonating cord (HEDC) segments is internally configured to receive nested U-shaped segments of LEDC and HEDC only when the LEDC is adjacent the base-charge end of the detonator.

대표청구항 ▼

A non-electric blasting assembly comprising: (a) first and second lengths of low-energy detonating cord (LEDC) having an explosive core loading of about from 0.2 to 2 grams per meter of length; (b) a precussion-actuated detonator comprising a tubular metal detonator shell integrally closed at an out

A non-electric blasting assembly comprising: (a) first and second lengths of low-energy detonating cord (LEDC) having an explosive core loading of about from 0.2 to 2 grams per meter of length; (b) a precussion-actuated detonator comprising a tubular metal detonator shell integrally closed at an output end and closed at its other, input end by a partially empty, shorter tubular metal primer shell having an open end and supporting a percussion-sensitive primer charge adjacent the inside surface of an integrally closed end, said primer shell extending open end first into said detonator shell to dispose the outside surface of its primer charge end adjacent, and across, the end of said detonator shell, said detonator shell containing, in sequence from its integrally closed end, (1) a base charge of a detonating explosive composition and (2) a priming charge of a heat-sensitive detonating explosive composition; (c) means for holding said first length of cord with a portion of its side adjacent the outside end surface of said primer shell, and for holding the apex of a substantially U-shaped segment of said second length of cord adjacent the integrally closed end of said detonator shell in a manner such that the two arms of the U extend away from said detonator in a direction substantially parallel to the longitudinal axis of said detonator shell; and (d) means on said holding means for identifying the input and output ends of the detonator held thereby.