German Cockroach Glue Trap with Side Entry Openings
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Solution Overview
Problem
Existing German cockroach traps are ineffective due to openings that allow insects to escape, inadequate light control, and dead cockroach scents repelling new insects.
Innovation Solution
A German cockroach glue trap with openings of 3.5 mm to 4.5 mm diameter, elevated above the floor to prevent escape, and a ceiling high enough to prevent clinging, along with ceiling glue to capture climbing cockroaches, and no chemical involvement for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If openings are made larger to allow German cockroaches to enter, then entry is facilitated, but light enters more and cockroaches can detect dead cockroach scents and escape
Solution Approach 1:
The patent applies local quality by making the trap body opaque or translucent rather than transparent, creating a dark interior environment that German cockroaches prefer. This localized change in material property (from transparent to opaque) allows larger openings for entry while preventing light from entering and enabling cockroaches to enter without detecting dead cockroach scents through the walls.
2Object-affected harmful factors
If openings are made smaller to limit light entry, then light control is improved, but cockroach entry is hindered
Solution Approach 1:
The patent resolves this contradiction by changing the local quality of the trap body material to opaque or translucent, allowing larger openings while maintaining darkness inside. This material property change decouples the relationship between opening size and light entry, enabling both large openings for easy entry and light control simultaneously.
3Object-affected harmful factors
If openings are positioned low to prevent ceiling clinging, then ceiling avoidance is achieved, but cockroaches can feel the glue and escape
Solution Approach 1:
The patent applies dimensionality change by positioning openings at the sides of the trap body rather than at the top or bottom, and by elevating openings above the glue layer by a specific height (0.5-2 cm). This spatial arrangement in multiple dimensions prevents cockroaches from feeling the glue upon entry while also preventing them from reaching the ceiling to cling, solving both issues simultaneously through three-dimensional positioning.
4Object-affected harmful factors
If openings are elevated above the floor to prevent feeling the glue, then escape is prevented, but cockroaches can still reach the ceiling and avoid glue
Solution Approach 1:
The patent resolves this contradiction by positioning openings at the sides of the trap body at a specific height (0.5-2 cm above the glue layer) and ensuring the trap ceiling is sufficiently high. This multi-dimensional spatial arrangement prevents cockroaches from feeling the glue upon entry while also preventing them from reaching the ceiling, as the side positioning and height combination creates a geometric constraint that blocks both escape routes.
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 trap effectively captures German cockroaches by preventing escape and repulsion, while being safe and inexpensive, and does not require chemical use.
Implementation Method 1
a sticky surface inside the trap to capture insects
Data Source
AI summary
A German cockroach glue trap comprising a dark colored base and lid. The base having an overall height between 25 mm and 40 mm. Openings through the base have a diameter between 3.5 mm and 4.5 mm, large enough for German cockroaches to enter but not too large to let in too much light. The centers of the lowest openings having heights preferably between 6 mm and 10 mm above a floor preventing touching the glue before being caught and allowing escape. A ceiling at least 7 mm above the centers of the highest openings preventing climbing to the ceiling. The openings are in thin walls not providing a shelf for the German cockroaches to linger and detect a scent (oleic acid) of dead cockroaches which repels additional German cockroaches from entering the trap. A layer of glue resides on the floor and a second layer of glue may reside on the ceiling.