Fishing Net Post and Cable Pulley System for Selective Carp Removal
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Solution Overview
Problem
Traditional methods for removing invasive fish species like carp from lakes are non-selective, harm native ecosystems, and require large crews, as they capture both carp and native fish, disrupting habitats and being inefficient due to snagging on debris.
Innovation Solution
A fishing device with a net and bait system that selectively attracts carp using baits with high specificity, allowing carp to aggregate before being removed en masse without harming native species, using a stationary design that can operate around obstacles with minimal personnel, triggered manually or automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional large commercial seine nets are used to remove carp, then carp can be removed from the lake, but native fish are also captured and habitat is disrupted
Solution Approach 1:
The patent applies local quality by using carp-specific baits (such as cut carp, fish guts, or carp fry) placed at specific locations within the net to attract only carp. The net is positioned in specific areas where carp aggregate, creating a localized fishing zone that targets carp while sparing native fish. This selective bait placement and positioning strategy enables effective carp removal without capturing native species or disrupting their habitats.
2Productivity
If traditional seine nets are dragged along the bottom, then carp can be captured, but the nets snag on debris causing carp to escape
Solution Approach 1:
The patent implements dynamics by designing a net system that can be dynamically positioned and adjusted. The net is deployed stationary or with minimal movement, allowing it to adapt to the natural movement of carp rather than forcing carp into the net through aggressive dragging. This dynamic positioning capability, combined with selective baiting, maintains net reliability by preventing snagging on debris while ensuring effective carp capture.
3Productivity
If traditional seine nets are used, then carp removal can be achieved, but a large number of people are required to operate them
Solution Approach 1:
The patent applies self-service by designing a net system that can be operated by a single person or small team. The net incorporates self-deploying mechanisms and stationary positioning capabilities that eliminate the need for large crews to manually handle and position the net. The simplified operational design, combined with selective baiting strategies, enables effective carp removal with minimal personnel, reducing operational complexity while maintaining productivity.
4Productivity
If traditional seine nets disrupt the bottom of the lake, then carp can be captured, but aquatic vegetation and habitat are damaged
Solution Approach 1:
The patent applies segmentation by dividing the fishing operation into discrete, controlled segments. Instead of dragging a large net across the entire lake bottom, the net is positioned in specific segmented areas where carp aggregate. The net is deployed in a controlled manner that minimizes contact with the lake bottom, capturing carp in localized zones without disrupting aquatic vegetation or habitat across the broader lake environment.
Data Source
AI summary
A fishing device includes a net disposed in a body of water containing fishes and a post installed near a perimeter of the net. The post further includes a stem, a cord, and a weight. A portion of the stem is above a surface of the body of water, and the cord is slidably secured to the stem. A first end of the cord is attached to the weight, and a second end of the cord is attached to the net. The weight is configured to move from a first position to a second position upon receiving wireless communication, and the first position is higher than the second position.