The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1998
Filed:
Dec. 18, 1996
Richard W Givens, Columbus, OH (US);
Greg S Williams, Alexandria, OH (US);
Other;
Abstract
The present invention includes a small diameter explosive cartridge and a two-stage large diameter explosive cartridge apparatus for presplitting rock can be axially detonated by detonating cord through a central detonation passageway in the explosive cartridge while keeping the detonating cord and the explosive material in the explosive cartridge physically separate. The explosive cartridge includes an outer tube and an inner tube inside of the outer tube. The explosive cartridge includes two or more continuous webs extending radially between the outer surface of the inner tube and the inner surface of the outer tube. For the small diameter explosive cartridge, the space between the outer surface of the inner tube and the inner surface of the outer tube is filled with high explosive material such as water gel or emulsion explosive material. The inside of the inner tube forms a central detonation passageway axially through the small diameter explosive cartridge through which detonating cord can be strung to provide axial detonation and to provide effective detonation between each of the small diameter explosive cartridges when the small diameter explosive cartridges are assembled on a line of detonating cord in a borehole, while keeping the detonating cord and the emulsion explosive material in the small diameter explosive cartridge physically separate. The two-stage large diameter explosive cartridge apparatus includes a large diameter explosive cartridge and a small diameter explosive cartridge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile