Marker Projectile Deformable Closing Member Impact Release
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Solution Overview
Problem
Existing marker projectiles face issues such as inconsistent breaking upon impact, potential for injury due to high impact requirements, radial dispersion of marking substance in gun barrels, unsuitability for small calibre rifles, and limited temperature functionality due to the nature of the marker substance.
Innovation Solution
A non-lethal marker projectile design featuring a hollow body with a front opening, a marker substance, an expelling member, and a deformable closing member that deforms upon impact to release the substance, along with a separator creating multiple passages for efficient marking, allowing for the use of more liquid substances that maintain effectiveness across a wider temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a frangible casing or enclosure is used to hold the marker substance, then the projectile can break upon impact to release the marker, but the high impact required may cause injury and the casing may fail to break consistently
Solution Approach 1:
The patent removes the frangible casing entirely and instead uses a deformable closing member that is part of the projectile body. The marker substance is held in place by this closing member rather than being enclosed in a separate breakable container, eliminating the inconsistency and injury risks associated with frangible casings
Solution Approach 2:
The patent changes the mechanical properties of the closing member to be deformable rather than brittle. This allows the closing member to yield progressively under impact forces, providing reliable marker release at lower impact levels that do not cause injury
2Reliability
If the nose portion is coated with marking substance to enable marking, then the target can be marked effectively, but the marking substance disperses radially outwardly due to centrifugal force from rifling spin and fouls the barrel
Solution Approach 1:
The patent removes the marking substance from the external surface (nose portion) and relocates it to the interior of the hollow body. The substance is held behind a closing member that only opens upon impact, preventing the substance from being exposed to centrifugal forces during flight
Solution Approach 2:
The patent prepares the marking substance in advance within the hollow body in a contained state, ready for release only when needed upon target impact. This preliminary containment prevents premature dispersal and barrel fouling
3Adaptability or versatility
If a complex bullet design with piston and coated nose is used, then marking functionality is achieved, but manufacturing becomes difficult for small calibre bullets
Solution Approach 1:
The patent divides the projectile into simple functional segments: a hollow body, a deformable closing member, and marker substance. This segmentation allows each component to be manufactured separately and assembled, greatly simplifying production for small calibre bullets compared to integrated complex designs
Solution Approach 2:
The patent simplifies the overall design parameters by eliminating the piston mechanism and nose coating process. The deformable closing member provides a simpler geometric parameter set that is easier to manufacture with precision for small calibre dimensions
4Reliability
If a more liquid marker substance is used to improve marking spread and temperature range, then marking visibility improves, but the substance may leak during transit and shipment
Solution Approach 1:
The patent extracts the liquid marker substance from direct exposure to the external environment by containing it within the hollow body behind a closing member. This containment structure prevents leakage during transit while allowing the substance to spread effectively upon impact when the closing member deforms
Solution Approach 2:
The hollow body structure provides beforehand protection and containment for the liquid marker substance during transit and storage. The closing member acts as a protective barrier that prevents leakage under normal handling conditions while yielding appropriately upon target impact
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 solution ensures consistent marking, reduces the risk of injury, prevents barrel fouling, and enhances marking visibility and functionality in various temperatures, while maintaining practicality during transit and use in small calibre rifles.
Implementation Method 1
a deformable closing member positioned between the marking substance and the separator, the closing member configure to deform under the impact of the travelling expelling member whereby to release the marking substance from the hollow body
Implementation Method 2
the momentum of the expelling member relative to the hollow body carries the expelling member forwardly to expel the marking substance through the opening
Implementation Method 3
the centrifugal force imparted by the spinning bullet causes the marking substance to move radially outwardly
Data Source
AI summary
The invention provides a marker projectile a hollow body (4) having an opening at the front; a marker substance (3) disposed within the hollow body (4); and an expelling member (5) within the hollow body (4) behind the marking substance (3); the hollow body (4) and expelling member (5) being configured such that upon impact of the projectile with a target, the momentum of the expelling member (5) relative to the hollow body (4) carries the expelling member (5) forwardly to expel the marking substance (3) through the opening, a separator (1) extending at least partly over the front opening, the separator (1) defining two or more spaces through which the marker substance (3) may pass when expelled through the opening and characterized by a deformable closing member (2) positioned between the marking substance (3) and the separator (1), the closing member (2) configured to deform under the impact of the travelling expelling member (5) whereby to release the marking substance (3) from the hollow body (4).