Rodent Bait Station Teeth Retention Mechanism
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Solution Overview
Problem
Conventional rodent bait stations fail to securely retain soft bait packages, as the paper packaging is easily gnawed through and not effectively held by the spike or pins, leading to unsightly and unsanitary scattering of paper scraps around the station.
Innovation Solution
The bait station incorporates undulating or jagged teeth on the mating lid and base walls of the bait compartment to grip and clamp the sachet bait package, utilizing the capstan or belt friction principle to enhance retention without creating high local stresses, ensuring the package remains within the station even after being accessed by rodents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional spikes or pins are used to hold the bait package, then the structure is simple, but the paper packaging is not securely retained and scatters around the station
Solution Approach 1:
The patent applies local quality by providing gripping teeth only at specific locations where the bait package flaps are positioned, rather than requiring a complex overall structure. The teeth are localized to the base and lid walls that contact the package, concentrating the retention function where needed while keeping the rest of the station simple.
Solution Approach 2:
The gripping teeth are designed with curved or undulating surfaces that conform to the shape of the paper package flaps. This curvature allows the teeth to grip the package more effectively by distributing force along the curved surface, preventing the package from slipping or scattering.
2Reliability
If multiple pins are used to engage the bag, then retention is improved, but the device complexity increases
Solution Approach 1:
The patent merges the retention function into the base and lid structures themselves by integrating gripping teeth directly into these components. Instead of using separate pins or clips, the teeth are formed as part of the molded plastic base and lid, combining multiple functions into unified structures.
Solution Approach 2:
The base and lid serve multiple functions: they contain the bait package, provide structural support, and incorporate gripping teeth for retention. This multi-functionality eliminates the need for separate retention mechanisms, reducing overall device complexity while maintaining reliable package holding.
3Reliability
If the bait package is tightly secured, then paper scattering is prevented, but the rodent's ability to access the bait is restricted
Solution Approach 1:
The patent segments the retention function by using multiple small gripping teeth distributed across the base and lid, rather than one large clamping mechanism. This segmentation allows the package to be held securely at multiple points while still permitting localized access by rodents through the flaps.
Solution Approach 2:
The paper package flaps act as flexible elements that can be manipulated by rodents. The gripping teeth engage these flexible flaps in a way that holds them in place during normal conditions but allows rodents to push or chew through them to access the bait, maintaining both retention and accessibility.
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 securely holds the sachet bait package within the station, minimizing the escape of paper components and maintaining a clean environment by effectively gripping the package through interdigitating or offset teeth, ensuring the bait is retained while being consumed by rodents.
Implementation Method 1
utilizing the capstan or belt friction principle to enhance retention without creating high local stresses
Implementation Method 2
The lid and base teeth may interdigitate, or they may extend alongside one another to grip the material of the bait package
Data Source
AI summary
A rodent bait station for retention of sachet bait, which is a malleable bait retained within a porous bag or package having sidewardly protruding flaps. The bait station may be a molded plastic structure with a lid hinged to a base. Base walls define a bait compartment sized to receive the sachet bait such that the flaps overlie the opposed bait compartment base walls. The lid has downwardly protruding bait compartment walls which overlie the base bait compartment walls. Undulating or jagged teeth are formed on the lid and base bait compartment walls. When the lid is closed on the base, the teeth projecting from the lid cooperate with the teeth protruding from the base, thereby engaging and clamping a retained sachet bait package flaps to thus retain the package with the bait station even after a rodent has broken into the package to access the poison contained therein.