Simultaneous Nonelectric Priming Assembly for Detonator Coupling

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Solution Overview

Problem

Existing systems for coupling detonators to explosives in mining, excavation, drilling, and military operations lack reliability and safety, particularly when detonators fail, as they often require manual handling and can lead to unintended detonations, especially under adverse conditions.

Innovation Solution

A priming assembly with a housing that includes multiple detonator and transmission line receptacles, allowing for the secure positioning and communication of explosive charges from multiple detonators to transmission lines, ensuring simultaneous detonation of explosives even if one detonator fails, and enabling remote triggering safely and inexpensively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual handling of detonators and explosives is used, then operational flexibility is maintained, but safety and reliability deteriorate due to unintended detonations and human error

Engineering Contradiction:
Improvedetonation reliabilityVSAvoidmanual handling requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a priming assembly as an intermediary device between the detonators and explosives. This assembly includes a housing with multiple detonator receptacles and transmission line receptacles that facilitate secure coupling and positioning. The priming assembly eliminates the need for manual handling of individual detonators and explosives while ensuring reliable transmission of the explosive charge through structured receptacles designed for precise alignment and secure retention.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If multiple detonators are used to ensure simultaneous detonation, then reliability improves, but device complexity increases

Engineering Contradiction:
Improvesimultaneous detonation reliabilityVSAvoidnumber of detonators and receptacles
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple detonators and transmission lines into a single integrated priming assembly housing. The housing combines multiple detonator receptacles and transmission line receptacles into one unified structure, allowing simultaneous detonation of multiple explosives while managing complexity through integration. The semi-circular transmission line receptacles are designed to retain and position multiple transmission lines efficiently within the consolidated housing structure.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If transmission lines are exposed to detonators for charge communication, then detonation effectiveness improves, but safety deteriorates due to potential unintended detonations

Engineering Contradiction:
Improveexplosive charge transmissionVSAvoidunintended detonation risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements preliminary action by pre-positioning transmission lines within semi-circular transmission line receptacles before detonator insertion. The receptacles are designed to retain and pre-align transmission lines, ensuring proper positioning and exposure to the explosive charge when detonators are inserted. This preliminary arrangement of transmission lines within structured receptacles eliminates the need for manual alignment and reduces the risk of unintended detonations during assembly.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The priming assembly ensures reliable and safe simultaneous detonation of multiple explosives, even under adverse conditions, by using multiple detonators and transmission lines, reducing the risk of unintended detonations and enhancing operational safety.

Implementation Method 1

an explosive charge from at least one of the plurality of detonators is communicated to the plurality of transmission lines and to the at least one explosive

Methodology Applied
Scientific EffectDetonation: Detonation

Data Source

PatentUS8973502B2Simultaneous nonelectric priming assembly and method
Publication Date: 2015.03.10 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US8973502B2 patent drawing
  • US8973502B2 patent drawing
  • US8973502B2 patent drawing

AI summary

A priming assembly and a method are provided for coupling a plurality of detonators to at least one explosive through a plurality of transmission lines. The priming assembly may include a housing that receives the plurality of detonators and the plurality of transmission lines. In use, the plurality of transmission lines may communicate with the plurality of detonators within the housing to transmit explosive charges from the plurality of detonators to the at least one explosive.