Slow-Sinking Fishing Weight With Drag Channels for Lure Depth Control
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Solution Overview
Problem
Conventional fishing weights sink too quickly through water, requiring high-speed retrieval to avoid debris and making it difficult to control the depth and movement of fishing lures, which results in unrealistic motion and reduced fish attraction.
Innovation Solution
A slow sinking fishing weight made from thermoplastic with a density slightly greater than water and featuring deep surface channels and projections, providing high resistance to water flow, allowing the weight to rise when pulled through the water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional fishing weight is used, then the weight provides sufficient casting weight and makes the lure sink, but the weight sinks too quickly through water requiring high-speed retrieval
Solution Approach 1:
The patent changes the density parameter of the fishing weight by using thermoplastic material with density slightly greater than water (1.02-1.08 g/cc) instead of traditional high-density materials like lead. This parameter change reduces the sinking rate to 5-20 cm/sec, allowing the weight to sink slowly while still providing sufficient casting weight and lure depth control.
2Loss of time
If the weight sinks quickly, then the lure reaches the bottom faster, but it becomes difficult to control the depth and movement of the fishing lure
Solution Approach 1:
The patent modifies the density parameter to achieve a balanced sinking rate. By selecting thermoplastic material with density 1.02-1.08 g/cc, the weight sinks at 5-20 cm/sec, which is fast enough to reach the bottom efficiently but slow enough to allow fishermen to control lure depth and movement through normal retrieval speeds.
3Reliability
If the weight is pulled through water at high speed to avoid debris, then the weight stays above debris, but the lure motion becomes unrealistic and reduces fish attraction
Solution Approach 1:
The patent changes the density parameter to enable natural sinking speed. The thermoplastic weight with density 1.02-1.08 g/cc sinks at 5-20 cm/sec, which is slow enough to allow realistic lure motion that attracts fish while fast enough to reach depths where fish feed without excessive retrieval speed.
Solution Approach 2:
The patent converts the typically unwanted slow sinking rate into a beneficial feature. By using low-density thermoplastic material, the weight naturally sinks slowly, which is usually considered a disadvantage for reaching bottom quickly, but this slow sinking rate is exactly what creates realistic lure motion and improves fish attraction.
4Weight of moving object
If a heavy weight is used to ensure sufficient casting weight, then the lure can be cast farther, but the weight sinks too quickly and requires high-speed retrieval
Solution Approach 1:
The patent changes the density parameter to decouple casting weight from sinking rate. By using thermoplastic material with density 1.02-1.08 g/cc, the weight provides sufficient casting weight (15-50 grams) while sinking slowly at 5-20 cm/sec, eliminating the need for high-speed retrieval.
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
Enables precise control over the speed and depth of the lure by maintaining a slow sinking rate and generating sufficient drag, simulating natural prey motion and enhancing fish attraction.
Implementation Method 1
A slow sinking fishing weight made from thermoplastic with a density slightly greater than water
Implementation Method 2
featuring deep surface channels and projections, providing high resistance to water flow
Data Source
AI summary
A slow sinking fishing weight is made from a material having a bulk density which is slightly greater than the density of water and includes deep surface channels that significantly increase its resistance to movement in water. The fishing weight has a sink rate in calm water which is less than one foot per second. The slow sinking fishing weight allows a person to more easily maintain the depth of the sinking weight and an attached lure while moving the lure through the water.