Orica Explosives Technology Pty Limited

Cxa Ltd./cxa Ltee

Cxa Ltd.

George Gary Kelly

Sek Kwan Chan

Joseph Georges Mario Lecompte

James R Simon

David J Welburn

Henry McLaughlin

A connector block for retaining at least one shock tube in signal transfer relationship with a detonator. The connector block comprises a housing () having a bore () formed therein for receiving a detonator () provided with a percussion-actuation end (), a shock tube retention means () defining with the housing a slot () for receiving therein at least one shock tube () and holding the at least one shock tube in signal transfer relationship with the percussion-actuation end of the detonator present in the bore, the slot having an entrance () for allowing insertion of the at least one shock tube into the slot, and a flexible and resilient closure member () or an inflexible closure member () pivotable on a sprung hinge () extending partially or fully into the entrance. The closure member and the shock tube retention means resiliently flex to allow entry of the at least one shock tube through the entrance and into the slot, the closure member flexing through a distance at least 30% the diameter of the shock tube.

Connector block with shock tube retention means and flexible and resilient closure member

A field adjustable delay connector for use in detonating cord hook-ups for multi-charge blasting particularly adapted to work effectively with low energy shock or detonating cord. The delay connector is so constructed that the donor cord initiates combustion in a variable length of burning composition the length being mechanically adjustable by the blaster during hook-up.

Pyrotechnic variable delay connector

A modified explosive shock tube is provided which has a lateral energy output and hence may be used as a trunk line in a non-electric blasting network. The modified shock tube comprises a hollow, flexible plastic tube having a layer of energy-producing material on its inner surface and also having at intervals along its length, cuts or slits which penetrate the tube wall. The area of the slits has an overcovering of a waterproof material. When energized, the tube will burst at the area of the slits to release energy in a direction lateral to the tube axis.

Explosive shock tube having lateral initiation properties

Growing community of inventors

Hawkesbury, Canada

George Gary Kelly