Primer centering device for large diameter blastholes

United States of America Patent

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Oct 9, 1990
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N/A
app pub date
May 12, 1989
filing date
Sep 29, 1988

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Expired

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Abstract

An improved method for reducing misfires in large diameter unlined blastholes by fitting on the primer used in the blasthole a centering device comprised of a semi-conducting plastic material.

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Patent Owner(s)

Patent Owner	Address
SUNCOR ENERGY INC	CALGARY

International Classification(s)

F42B:EXPLOSIVE CHARGES, e.g. FOR BLASTING; FIREWORKS; A....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
McLaughlin, Patrick D	Fort McMurray, CA	8	20

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Primer centering device for large diameter blastholes

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07350829

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PATENT NO	4961381
SERIAL NO	07350829
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07350829

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