ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,724, issued on Aug. 12.
"Method of blasting using jet units charged in a blast-hole" was invented by Moon-Jong Kwon (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Liners (150), fittings (11-22), and spacers (23-25) are provided to assemble the jet (170) units, which work as explosives (110) and detonators (120) to form stand-off distance and air-deck (140) space. The liners (150) release jets (170) and the fittings (11-22) and spacers (23-25) are designed to attach the liner (150) firmly to the explosives (110), inducing the cavity effect. The objective of the present invention is to provide a blasting method using a jet (170) un...