NOVEL MAGNETIC-KEY SAFETY INTERLOCK SYSTEM

Abstract: an interlock system for explosive operations includes an array of magnet sensors configured to engage an array of magnets in a magnetic key. the key may be selectively positioned to activate select sensors while the other remains deactivated. various sequences of activated and deactivated sensors correspond to various states of the interlock system. one or more switches of the interlock system are set according the state of the system. some states set the switches to disable any electrical signals from passing to the explosives. other states set the switches to enable select signals to pass to the explosive or other tools. explosive operations are enabled only in a particular predetermined state.

Inventor(s): Roger Archibald, Bulent Finci, Jacob Walsh, Stephen Cattanach

CPC Classification: F42D1/05 (BLASTING (fuses, e.g. fuse cords, ; {for obtaining fluid from wells ; for mining or quarrying ; for making tunnels or galleries }; cartridges ))

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