Imperial Chemical Industries Limited

Orica Canada Inc.

Malcolm D. Harding

Michael W. Beck

Anthony J. Rowe

Michael W Beck

Malcolm D Harding

Anthony J Rowe

In the field of blasting, an improvement in means for transmitting an initiating signal (non-electrically) to an explosive device to remotely detonate same in accordance with a predetermined delay period of the type which comprises tubing in which there is provided a reactive chemical composition containing at least one fuel component and at least one oxidant in intimate admixture that is capable of propagating a combustion signal from one end of said tubing to the other, the improvement consisting in the use of barium peroxide (BaO.sub.2) as the oxidant.

Low energy fuse

A connection device for blasting signal transmission tubing comprises a housing consisting of first and second hinged section (1, 2) provided with cooperating arcuate raised portions (3, 5) and grooves (4, 6) which, when the housing is closed, define first and second arcuate, circular-section channels, interconnected by a further channel (8). In use, first and second lengths of transmission tube are located in the arcuate channels and are partially cut by a blade (10) mounted in the connecting channel (8) to form apertures therein, whereby a portion of a blasting signal entering the connector via one of the tubes will spill out of that tube, traverse the connecting channel (8), and initiate a signal in each arm of the other tube.

Connection device for blasting signal transmission tubing

Growing community of inventors

Ayrshire, United Kingdom

Michael W Beck