公开(公告)号：WO2020142182A1

公开(公告)日：2020-07-09

申请号：PCT/US2019/066323

申请日：2019-12-13

Applicant: DYNO NOBEL INC.

Inventor： KOME, Cornelis L. ,  HUNSAKER, David ,  NELSON, Casey L. ,  HALANDER, John B. ,  SANDERUDE, Scott

IPC: F42D1/08 ,  F42D3/00 ,  E21B19/16 ,  E21D9/00 ,  E21B7/00

Abstract: A blasthole guard may include a conduit and a cap. The conduit is sized and shaped to allow a hose to pass through. The cap comprises a funnel that narrows to an open end of the conduit. A slot continuously extends from the conduit through the cap such that the slot forms an opening that extends along an entire length of the device.