US12680800 - Explosive cartridge delivery tube

The patent describes an explosive cartridge delivery tube designed to facilitate the delivery of explosive cartridges into blast holes, featuring a long body and a spacious internal chamber. Additionally, the inner wall of the chamber is coated with a grounded conductive film to enhance safety and performance during use.
Claim 1
1 . An explosive cartridge delivery tube comprising an explosive delivery tube body, wherein the explosive delivery tube body has a length greater than a depth of a blast hole, an explosive delivery chamber is formed inside the explosive delivery tube body and arranged in a length direction of the explosive delivery tube body in a running-through manner, and an internal diameter of the explosive delivery chamber is greater than a diameter of an explosive cartridge, wherein an inner wall of the explosive delivery chamber is covered with a conductive film being grounded. wherein an inner wall of the explosive delivery chamber is covered with a conductive film being grounded.
Google Patents
https://patents.google.com/patent/US12680800
USPTO PDF
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12680800