Angled Back Plate Bullet Trap with Granulated Rubber
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Solution Overview
Problem
Existing bullet trap systems are bulky, non-portable, and suffer from inefficient projectile capture and material degradation over extended use, lacking an effective mechanism for increased bullet deceleration.
Innovation Solution
A bullet trapping apparatus with an angled back plate and energy-absorbing materials, including a housing with a bullet guiding collar, front energy absorbing panel, and support structure, utilizing granulated rubber as the energy-absorbing medium to enhance deceleration and prevent ricochet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If rubber grains and rubber nuggets are used as bullet trap medium, then the system can decelerate bullets, but the medium experiences severe degradation during extended use and requires frequent replacement
Solution Approach 1:
The patent changes the physical parameters of the energy-absorbing medium by using granulated rubber with specific size ranges (1/4 to 3/4 inch) instead of traditional rubber grains or nuggets. This parameter optimization provides increased surface area for energy absorption while maintaining structural integrity over extended use, directly addressing the durability issue.
Solution Approach 2:
The patent employs a composite structure combining multiple components: granulated rubber medium, front energy-absorbing panel, angled back plate, and armor spacers. This composite approach creates a synergistic system where each component contributes to overall durability and bullet deceleration effectiveness, preventing the degradation issues seen with single-material systems.
2Duration of action of moving object
If traditional bullet trap systems are designed for effective bullet capture, then they achieve good deceleration, but they become bulky and non-portable
Solution Approach 1:
The patent divides the bullet trap system into separate modular components: a support structure with legs, a removable housing containing the energy-absorbing medium, a front energy-absorbing panel, and an angled back plate. This segmentation allows the system to be disassembled for easy transport and reconfiguration, directly addressing portability concerns while maintaining capture effectiveness.
Solution Approach 2:
The patent incorporates a hinged top edge on the bullet guiding collar that can be opened and closed, and a support structure with adjustable legs. These dynamic elements allow the system to be easily assembled, disassembled, and repositioned, providing portability without sacrificing the structural integrity needed for effective bullet capture.
3Device complexity
If a flat back plate is used in the bullet trap housing, then the structure is simple, but bullet deceleration is reduced due to ricochet and inefficient energy absorption
Solution Approach 1:
The patent replaces the traditional flat back plate with an angled back plate positioned at approximately 45 degrees relative to the bullet's path. This asymmetric configuration causes bullets to ricochet at reduced angles within the energy-absorbing medium, increasing the path length and energy absorption efficiency while maintaining relatively simple construction.
Solution Approach 2:
The angled back plate introduces a dimensional change to the bullet's trajectory, forcing bullets to travel at an angle through the energy-absorbing medium rather than directly backward. This dimensional alteration increases the effective deceleration distance and improves energy absorption without significantly complicating the housing structure.
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 apparatus provides increased bullet deceleration and extended durability by efficiently capturing projectiles without frequent medium replacement, ensuring safe and effective bullet trapping with the angled back plate and energy-absorbing materials.
Implementation Method 1
The energy absorbing material is preferably granulated rubber, but other materials may also be used.
Implementation Method 2
housing filled with the energy absorbing material
Implementation Method 3
Priebe et al. is hereby incorporated by reference in its entirety into this application.
Data Source
AI summary
A bullet trap apparatus preferably includes a housing, a support structure and energy absorbing material. The housing preferably includes a bullet guiding collar, a front energy absorbing panel, a front wall plate, a four sided box, an angled back plate and an angled armor plate. The front wall plate is attached to a front of the four-sided box. The front energy absorbing panel is located between the bullet guiding collar and the front wall plate. A perimeter of the angled back plate is attached to a perimeter of a rear of the four-sided box. Four armor spacers are attached in four corners of the back plate. A rear of the angled armor plate is attached to the four armor spacers. The housing is filled with energy absorbing material. The support structure preferably includes a first side leg and a second side leg and three base plates.