Firearm Suppressor Retainer With Damping Wells
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Solution Overview
Problem
Conventional firearm suppressors do not adequately reduce noise signature due to limitations in axially supporting and conditioning combustion gases, leading to incomplete energy dissipation and noise reduction.
Innovation Solution
The suppressor design includes a casing with a baffle stack and retainer system that provides a fluid pathway with contoured walls and damping wells, along with symmetrical surfaces and apertures, to enhance gas expansion, cooling, and energy dissipation, improving sound damping and thermal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional baffle stack designs are used, then the suppressor structure is simple, but the noise signature reduction is insufficient due to inadequate energy dissipation
Solution Approach 1:
The suppressor divides the baffle support function into multiple retainers (first retainer, second retainer, third retainer) positioned at different locations along the baffle stack. Each retainer provides localized support and gas conditioning, segmenting the overall suppression function into discrete zones that collectively achieve superior noise reduction
Solution Approach 2:
The retainers act as intermediary components between the combustion gases and the baffle stack. They provide threaded engagement with the casing to secure baffles while simultaneously creating fluid pathways that condition gases before they reach the baffles, mediating the interaction between gas flow and baffle structure
2Temperature
If axial support for the baffle stack is insufficient, then the suppressor structure is simpler, but gas expansion and cooling are inadequate
Solution Approach 1:
The retainers are positioned upstream of the baffle stack to preliminarily condition the combustion gases before they encounter the baffles. The fluid pathways in the retainers begin the expansion and cooling process early in the gas trajectory, preparing the gases for more effective energy dissipation at the baffles
Solution Approach 2:
The retainers introduce radial dimensionality to gas conditioning by creating fluid pathways that extend radially from the central axis. The contoured walls and apertures in the retainers redirect gases from purely axial flow to include radial components, enhancing three-dimensional expansion and cooling
3Object-affected harmful factors
If downstream gas conditioning is not provided, then the suppressor is simpler, but noise reduction effectiveness is limited
Solution Approach 1:
The multiple retainers are positioned sequentially along the gas flow path to provide continuous gas conditioning throughout the suppressor. The first retainer conditions gases immediately after the baffle stack, the second retainer provides intermediate conditioning, and the third retainer offers final conditioning before gases exit, maintaining continuous useful action throughout the gas trajectory
Solution Approach 2:
Each retainer is designed with specific local features (contoured walls, apertures, fluid pathways) tailored to the local gas conditions at its position. The retainers create localized zones of enhanced expansion and cooling where the gas properties and flow patterns are optimized for that specific location in the suppressor
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
This design effectively reduces the noise signature and thermal energy of combustion gases, resulting in improved sound damping and thermal performance compared to existing suppressor designs.
Implementation Method 1
enhance the expansion, cooling, and/or energy dissipation of the combustion gases
Implementation Method 2
enhance the expansion, cooling, and/or energy dissipation of the combustion gases
Implementation Method 3
enhance the expansion, cooling, and/or energy dissipation of the combustion gases
Implementation Method 4
the baffle stack redirects the combustion gases inside the casing to allow the combustion gases to expand, cool, and otherwise dissipate energy
Implementation Method 5
a plurality of apertures through the upstream and downstream surfaces and radially disposed from the fluid pathway that provide fluid communication through the upstream and downstream surfaces
Data Source
AI summary
A suppressor for a firearm includes a casing having a front end and defining a longitudinal axis. A first plurality of baffles are inside the casing, and a front cap is downstream from the first plurality of baffles at the front end of the casing. A first retainer is connected to the casing and disposed between the first plurality of baffles and the front cap. The first retainer has an upstream surface and a downstream surface, and the first plurality of baffles, the front cap, and the first retainer define a fluid pathway along the longitudinal axis. A contoured wall extends axially upstream from the upstream surface of the first retainer and defines a plurality of damping wells in the upstream surface of the first retainer radially disposed from the fluid pathway and circumferentially separated by the plurality of apertures. The downstream surface of the first retainer is symmetrical with the upstream surface.