Weapon Grip Aerogel Insulation for Cold Weather Dexterity
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Solution Overview
Problem
Weapons made of metal, such as archery bows and rifles, act as heat sinks in cold conditions, causing users' hands to become cold and lose dexterity due to thermal energy transfer, and existing solutions like gloves or battery-powered heating elements are either ineffective or costly.
Innovation Solution
A grip with an aerogel layer that insulates the user's hand from the weapon, using open-celled, mesoporous aerogel foam with high porosity and low density to impede thermal energy transfer, and is secured with spacers to prevent damage and maintain insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a battery-powered heating element is included in the grip to warm the user's hands, then the user's hands are kept warm, but the device complexity increases and energy consumption increases
Solution Approach 1:
The patent extracts the heating element from the grip system entirely, replacing it with a passive aerogel insulation layer that prevents heat loss without requiring active heating components, power sources, or control systems
Solution Approach 2:
The aerogel layer provides self-service insulation by its inherent low thermal conductivity properties, maintaining grip temperature passively without requiring external power sources, control systems, or user intervention
2Temperature
If a battery-powered heating element is included in the grip to warm the user's hands, then the user's hands are kept warm, but the energy consumption increases
Solution Approach 1:
The patent removes the energy-consuming heating element and power source from the system, replacing them with a passive aerogel insulation layer that maintains temperature without energy input
Solution Approach 2:
The aerogel layer provides self-service thermal insulation through its inherent low thermal conductivity (0.015-0.025 W/m·K), maintaining grip temperature passively without requiring external energy sources
3Strength
If the aerogel layer is directly compressed by the grip structure to ensure structural integrity, then the structural strength improves, but the insulation properties deteriorate
Solution Approach 1:
The patent segments the grip structure into distinct functional zones: a compression-resistant support structure that bears mechanical loads and an uncompressed aerogel insulation layer that maintains thermal performance, preventing direct compression of the aerogel
Solution Approach 2:
The patent applies different structural qualities to different regions: the outer grip structure is designed for mechanical strength and compression resistance, while the inner aerogel layer is protected from compression to maintain its low thermal conductivity insulation properties
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 aerogel grip effectively prevents thermal energy transfer, allowing users to handle weapons in cold conditions without numbness or frostbite, while preserving the structural integrity and insulation properties of the aerogel.
Implementation Method 1
A first layer of aerogel can be disposed adjacent the first surface... The first layer of aerogel can insulate the first engagement member so that thermal energy transfer between the user and the weapon is impaired
Implementation Method 2
the aerogel can have a density of less than 0.1 g/cm3... comprising a network of interconnected structures. The foam can exhibit a porosity or non-solid volume of optionally greater than 50%, greater than 60%, greater than 70%, greater than 80%, greater than 90%, or greater than 95%
Data Source
AI summary
A grip for a weapon is provided and can include a user engagement area including a first surface on the weapon, a first layer including an aerogel, the first layer disposed adjacent the first surface, and a first engagement member disposed over the first layer in the user engagement area. The first engagement member includes an exterior surface that engages an appendage of a user when the user holds the weapon. The first layer including the aerogel insulates the first engagement member so that thermal energy transfer between the user and the weapon is impaired. The weapon can be an archery bow, a firearm or any other weapon including a grip or portion that is engaged by an appendage of a user.