Bait grinding
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Solution Overview
Problem
Existing manual and kitchen-based devices are inefficient and unsuitable for grinding hard fish baits like boilies, pellets, and Tigernuts due to their bulkiness, arduous operation, and inability to handle high hardness.
Innovation Solution
A portable, electric motor-driven, battery-operated grinder with a spindle and displacing arm design, featuring blades with a blunt leading edge, capable of high-speed operation and effective grinding of hard baits without stalling, powered by lithium batteries providing at least 6V and a motor rated for 40W with a no-load speed of 15000 rpm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If manual devices or kitchen blenders are used to grind hard fish baits, then the grinding function is provided, but the devices are bulky, difficult to operate, and unable to handle high hardness baits effectively
Solution Approach 1:
The patent changes the operational parameters by using a high-speed electric motor (15000-30000 rpm) instead of manual operation, and selects a blunt leading edge geometry (0.5-2mm thickness) instead of sharp edges, enabling effective grinding of hard baits while simplifying operation
Solution Approach 2:
The patent replaces the manual mechanical turning system with an electric motor-driven system, substituting human physical effort with electrical power to achieve high-speed rotation and effective grinding of hard baits
2Speed
If sharp-edged blades are used in high-speed blenders, then high-speed operation is achieved, but the blades embed into hard baits causing stalling
Solution Approach 1:
The patent applies different local qualities to the blade leading edge by using a blunt geometry (0.5-2mm thickness) specifically at the contact point with bait, rather than a sharp edge, preventing embedding while maintaining high-speed operation
Solution Approach 2:
The patent inverts the conventional blade design by using a blunt leading edge instead of a sharp one, counterintuitively preventing embedding and stalling while maintaining effective grinding capability at high speeds
3Ease of operation
If a displacing arm with sharp edge is used to push bait, then bait is effectively displaced, but the sharp edge embeds into hard baits causing operational failure
Solution Approach 1:
The patent changes the geometrical parameter of the displacing arm leading edge from sharp to blunt (0.5-2mm thickness), enabling effective bait displacement without embedding into hard baits
Solution Approach 2:
The patent applies a specific local quality (blunt leading edge geometry) to the displacing arm at the point of contact with bait, allowing effective displacement while preventing embedding and operational failure
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 grinder efficiently breaks down hard fish baits into a powder, preventing stalling and embedding, and is suitable for on-site use with a battery life sufficient for multiple batches, addressing the limitations of existing devices.
Implementation Method 1
a motor, wherein (a) said one or more batteries provide a voltage of at least 6V, (b) said motor being rated for the provided voltage and for a power of at least 40W and having a no-load speed of at least 15000 rpm
Implementation Method 2
a spindle comprising one or more blades and at least one displacing arm, which spindle connects to and is turned by the motor to grind the fish bait
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a method and grinder for grinding bait for fishing. In particular, the present invention provides a portable, electric motor driven, battery operated grinder and a method of grinding fish bait using said grinder.