A sinker with a hook that can be used to hold the line and attach to the eye of a lure.

A combined sinker design with a spiral wire top addresses the challenge of multiple sinker types by integrating loop and leader stopper functions, reducing luggage and preventing thread breakage for secure line attachment.

JP3254079UActive Publication Date: 2025-12-22青木哲
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Patent Information

Application Number
JP2025001529U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2025-12-22
Estimated Expiration
2035-05-15

AI Technical Summary

Technical Problem

The challenge of carrying multiple types of sinkers for lure fishing due to their diverse functions and the difficulty in organizing and reducing luggage weight.

Method used

A combined sinker design featuring a spiral wire top that functions as both a loop and a leader stopper, allowing for easy attachment and secure holding of the line.

Benefits of technology

Reduces luggage weight by half and simplifies organization, ensuring secure attachment without thread breakage, facilitating efficient fishing setup.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a down shot sinker which can reduce baggage by combining the functions of three types of sinkers, a down shot sinker with a hook, a down shot sinker with a leader stopper, and a lure weight adjustment sinker, into one sinker for lure fishing. [Solution] The downshot sinker of this invention has a tight spiral shape made of wire at the top of the sinker, with one end fixed to the sinker and the other end protruding slightly from the circumference of the spiral to make it easier to hook the line. Because the spiral part is circular, it can be used as a sinker with a loop, and by passing the line through the loop two or more times and hooking it onto the protruding wire and pulling it together with the main line, it can be used as a leader stopper.
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Description

Summary of the Invention [Problem to be solved by the invention]

[0001] In recent years, the use of sinkers (fishing weights) in lure fishing has become more diverse. Different sinkers are used depending on the fishing tackle. In the case of downshot sinkers (weights with a line or other material tied to the top), there are sinkers with a line stopper attached to the top (Figure 2), sinkers with a loop that can be used to tie the line directly or thread the line through (Figure 1), and sinkers with a mechanism that hangs from the eye of a lure (Figure 3). It would be difficult to carry around a large number of these three types according to their weight, so I wanted to combine the functions of the three types of sinkers into one and reduce the amount of luggage I needed. [Means for solving the problem]

[0002] At the top of the sinker, make a tight spiral shape out of wire (see Figure 4), with one end fixed to the sinker, and the other end protruding from the circumference of the spiral so that it is easy to hook a line onto it. The wire is shaped like a spiral circle, so it can be used as a sinker with a loop. Furthermore, if you pass the line through the hole at the top of the surface towards the back, then pass it through the hole below the surface towards the back again and pull it to the top together with the main line, it can be used as a leader stopper (see Figure 5). [Effects of the Invention]

[0003] By using this sinker, I was able to combine the three different sinkers I was carrying into one, reducing my luggage by half and making it easier to keep things organized. With previous leader stoppers, the mechanism was such that the thread was clamped into the crimped gap of the metal, which could cause thin threads to break, but with this spring mechanism, the thread that is clamped and held in place is tightened with the same thread (see Figure 5), so even thin threads are gentle and less likely to break. [Brief explanation of the drawings]

[0004] [Figure 1] A diagram of a sinker with a hook that can be used to hold the line and can also be attached to the eye of a lure. [Figure 2] A diagram of a typical downshot sinker with a hook. [Figure 3] A diagram of a typical downshot sinker with a leader stopper [Figure 4] A diagram of the front and back of a sinker with a hook that can be used to hold the line and attach to the eye of a lure. [Figure 5] It has a hook-shaped design that can also be used as a leader stopper, and this is an explanatory diagram of how to use it as a leader stopper by threading the sinker line through it, which can also be attached to the eye of a lure. DETAILED DESCRIPTION OF THE INVENTION

[0005] The part that connects to the thread at the top of the sinker is made by winding wire in a spiral shape and wrapping the top part more than twice (see Figure 5). [Example]

[0006] By using fishing sinkers with a hook that can also be used as a line stopper, you can carry less luggage than with previous sinkers, and since three different types are combined into one, it is easy to organize and you can set up your rig quickly. [Industrial Applicability]

[0007] By providing anglers with convenient products, they can concentrate on and enjoy fishing, which will lead to the development of fishing culture. [Explanation of symbols]

[0008] The symbol "L" in Figure 5 represents fishing line.

Claims

[Claim 1] This downshot sinker is a fishing tackle that has three functions: a downshot sinker with a ring, a downshot sinker with a leader stopper, and a lure weight adjustment sinker, and has the characteristic that it can be used as both a leader stopper sinker with a gap-free spiral binding part and a sinker with a ring.