Ammunition and explosives – Blasting – Contained blasting charge
Reexamination Certificate
2005-06-07
2005-06-07
Carone, Michael J. (Department: 3641)
Ammunition and explosives
Blasting
Contained blasting charge
C102S313000, C102S321000, C102S322000, C175S004520, C086S020150
Reexamination Certificate
active
06901865
ABSTRACT:
Primer casing (1) comprising sleeve portion (5) and leading portion (5a), wherein sleeve portion (5) includes tabs (6) to retain primer (11) and blasthole engagement means (2), and wherein leading portion (5a) comprises nose cone (8). Engagement means (2) comprises an array of rigid, multiple projections that are hinged and movable between a retracted position and a blasthole engagement position. Explosive loading hose (13) locales within hose receiving sleeve (7) and can be used to push primer casing (1) into the desired location within the blasthole prior to filling the blasthole with bulk explosive. Methods of loading a blasthole comprising inserting primer (11) into primer casing (1) and positioning primer casing (1) at a desired location in a blasthole are also described and claimed.
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Hunter Andrew D.
Palmer Anthony M.
Thomson Steven
Bergin James S.
Carone Michael J.
Greenlee Winner and Sullivan P.C.
Orica Explosives Technology Pty. Ltd.
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