Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Nils Alberto Heinke0
Roger Dean Skaggs0
Stephen Mitchell Collinsworth0
Date of Patent
June 17, 2008
0Patent Application Number
105743240
Date Filed
September 30, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A drill hole (350) extends into rock to be blasted. A blasting accessory (310) includes a container portion (312) for holding a predetermined volume of stemming material, and a spacer (330) for spacing the stemming material a predetermined distance from a surface, e.g. a blind bottom of the drill hole. The container portion has a top (320) surrounded by a dilatable, inverted skirt forming a seal (342), and forms a support for a blasting substance like an explosive.
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