Access control for electronic blasting machines

US6851369B2 · kind B2 · utility

Assignee

• ORICA EXPLOSIVES TECHNOLOGY PTY LTD · AU

Inventors

• Dirk Hummel · Hennef (Sieg), DE
• Olaf Cramer · Essen, DE

Key dates

• Filing date: Aug 29, 2003
• Grant date: Feb 8, 2005
• Expiry date: Aug 29, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42D5/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Blasting apparatuses and methods control actuation of a plurality of detonators, and involve the use of one or more authorization keys each associated with a blasting machine. The authorization key(s) are transferable from the blasting machine(s) to a central command station, each authorization key storing a data package comprising a randomly generated access code generated by its corresponding blasting machine. Transfer of the one or more authorization keys to a central command station allows the data packages (and associated randomly generated access codes) to be transmitted by the central command station for receipt by the blasting machine(s).