Jun 9, 2026

US12650284 - Triggering explosives in holes

An assembly ( 7 ) for triggering an explosive in a hole ( 9 ) to produce an explosive blast in the hole includes (a) an explosion trigger ( 15, 19 ) for triggering the explosive in the hole, (b) a detonation unit body ( 21 ) that is configured to be located at or proximate an open end of the hole in an initial position of the assembly in the hole and (c) a trigger cord ( 31 ) that is connected to the detonation unit body and to the explosion trigger.

Assignee: Olitek Pty Ltd
Inventors: Anthony James Sprague, James Thomas Oliver, Stephen Hanwright
Filing date: 2024-07-03

explosivesdetonationtriggering

The patent describes a trigger assembly designed for initiating explosives in blast holes, featuring a detonation unit body that stores a trigger cord and an explosion trigger. The assembly allows for the trigger to be loaded into the hole and moved to a detonation position, enhancing safety and control during explosive operations.

Claim 1

1 . A trigger assembly for triggering an explosive emulsion in a blast hole, the trigger assembly comprising: a detonation unit body including a retaining portion, the detonation unit body defining a compartment for storing a trigger cord, the compartment having at least one opening; and an explosion trigger, a detonation unit body including a retaining portion, the detonation unit body defining a compartment for storing a trigger cord, the compartment having at least one opening; and an explosion trigger, wherein the trigger is detachably secured to the detonation unit body allowing the trigger to be loaded into the blast hole at an initial position and moved relative to the detonation unit body to a detonation position wherein the trigger is spaced apart from the detonation unit body.

Google Patents

https://patents.google.com/patent/US12650284

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12650284