Self-Igniting Rodent Gasser for Wind- and Moisture-Resistant Ignition
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Solution Overview
Problem
Existing rodent gassers require fuses for ignition, which pose safety risks due to handling errors, are affected by wind and moisture, and can become disconnected or damaged, necessitating a more reliable and safer self-ignition system.
Innovation Solution
A rodent gasser with a self-ignition system featuring a plastic shroud and a strike pad or integrated pull pin mechanism, allowing for a longer burn time and protection from wind and moisture, eliminating the need for a fuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a fuse is used for ignition, then the device can be ignited, but the burn time is only 5-10 seconds which creates safety risks and handling dangers
Solution Approach 1:
The ignition system is divided into two separate components: a strike pad (for ignition) and a fuse element (for sustained burning). The strike pad is struck to ignite the fuse, which then burns for an extended period. This segmentation allows the ignition function and the timing function to be separated, enabling a longer safe handling time while maintaining reliable ignition.
Solution Approach 2:
The strike pad is pre-positioned on the device housing, ready for activation. When the user strikes the strike pad, it immediately ignites the fuse without requiring any additional preparation or external ignition source. This preliminary preparation of the ignition mechanism ensures quick and reliable activation while establishing the extended burn time from the moment of activation.
2Reliability
If a fuse is used for ignition, then the device can be ignited, but the fuse is affected by wind and moisture which compromises effectiveness
Solution Approach 1:
The strike pad acts as an intermediary between the user's action and the fuse ignition. Instead of exposing the fuse directly to environmental conditions during ignition, the strike pad (which is protected by the housing) transfers the mechanical energy of the strike to ignite the fuse. This intermediary mechanism protects the ignition process from wind and moisture interference.
Solution Approach 2:
The strike pad is integrated into the housing structure and automatically positioned to receive the user's strike. The housing itself provides protection to the strike pad from environmental elements, and the system requires no external protection or preparation - the user simply performs the striking action regardless of weather conditions, and the system handles the ignition reliably.
3Ease of operation
If a fuse is used for ignition, then the device can be ignited, but the fuse can become disconnected or damaged making ignition impossible
Solution Approach 1:
The strike pad is merged with the housing structure, making it an integral part of the device rather than a separate component. This integration eliminates the possibility of the strike pad becoming disconnected or damaged independently. The strike pad is permanently attached to the housing, ensuring that the ignition mechanism remains intact and functional throughout the device's service life.
Solution Approach 2:
Instead of using a traditional fuse that requires connection and can become disconnected, the invention uses a strike pad that copies the ignition function through a different mechanism - mechanical striking rather than electrical or chemical connection. This alternative implementation achieves the same ignition purpose while eliminating the connection reliability issues associated with traditional fuses.
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 self-ignition system provides safer, reliable, and robust operation with a burn time of up to 60 seconds, ensuring consistent ignition regardless of environmental conditions and reducing the risk of handling injuries.
Implementation Method 1
frictional engagement between the head of the flare and a surface on the flare cap
Implementation Method 2
explosive lens and a detonation cord
Data Source
AI summary
A rodent gasser including a smoke cartridge and having a self ignition system is provided. According to a first embodiment, the self ignition system has a top plastic cap covering a strike pad and a lower plastic shroud that protects the rodent gasser ignition system prior to use. An ignition button is provided under the shroud that works with the strike pad to ignite the smoke cartridge. According to a second embodiment, the self ignition system has a top plastic cap covering activation components of a pull pin ignition system that include a gripping element and a connecting element that couples the gripping element to an internal ignition assembly. The gasser is ignited by pulling the gripping element. A method of using the rodent gasser is also provided.