Double-Loop Knot-Tying Tool for Consistent Ribbon Bows

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Solution Overview

Problem

Conventional methods of gift wrapping, such as diagonal wrapping and ribbon tying, are challenging due to difficulties in determining paper size, initial positioning, and mastering the techniques involved, leading to inefficient and aesthetically suboptimal results.

Innovation Solution

A knot-tying tool and creasing tool are introduced, comprising a main body with specific sections for pinching, looping, and folding ribbons or strings, along with a packaging paper size calculation program to facilitate precise wrapping and knot-tying processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If diagonal wrapping method is used, then wrapping speed is improved and adhesive tape usage is reduced, but it becomes difficult to determine packaging paper size and initial position

Engineering Contradiction:
Improvewrapping speedVSAvoidpackaging paper size determination
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent introduces a positioning mark as an intermediary element between the packaging paper and the box. This mark serves as a reference that mediates the relationship between the wrapper and the packaging paper, enabling accurate positioning without requiring complex measurements or calculations. The positioning mark is placed on the packaging paper at a predetermined distance from the corner, providing a visual guide for alignment with the box corner.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies preliminary action by pre-marking the packaging paper with positioning marks before the wrapping process begins. These marks are prepared in advance at specific distances from the corners, allowing the wrapper to quickly align the paper with the box without performing measurements during the wrapping process itself.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If diagonal wrapping method is used, then wrapping efficiency is improved, but double-layered pleats must be made making it difficult to master

Engineering Contradiction:
Improvewrapping efficiencyVSAvoidtechnique complexity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent segments the wrapping process into distinct, manageable steps guided by positioning marks. Instead of requiring the wrapper to master complex continuous folding techniques, the positioning marks divide the process into discrete actions: align the mark with the corner, fold along the edge, repeat for each side. This segmentation makes the technique easier to learn and execute.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The positioning marks serve as intermediaries that guide each folding action, replacing the need to master complex pleating techniques. The marks provide visual cues that simplify the coordination of hands and paper, making the diagonal wrapping technique accessible to beginners while maintaining high efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Shape

If ribbon knot-tying is performed manually, then decorative effect is achieved, but it requires difficult-to-master techniques

Engineering Contradiction:
Improveknot appearanceVSAvoidknot-tying technique
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The patent applies the self-service principle by designing a tool that performs the complex knot-tying operations automatically once the ribbon is positioned. The tool's structure with loops and guides enables the ribbon to form knots and bows through simple pulling and releasing actions, without requiring the user to master traditional hand-tying techniques. The tool does the work that would otherwise require skilled manual manipulation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The knot-tying tool serves as an intermediary between the user and the ribbon. Instead of directly manipulating the ribbon to form complex knots, the user interacts with the tool, which in turn manipulates the ribbon through its structured loops and guides. This intermediary device translates simple user actions into complex knot-forming operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Shape

If conventional knot-tying methods are used, then decorative knots can be formed, but consistent results are difficult to achieve

Engineering Contradiction:
Improveknot consistencyVSAvoidtechnique difficulty
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The tool enables consistent knot formation through its fixed structural geometry. The loops and guides are manufactured with precise dimensions and angles, ensuring that each use of the tool produces the same knot configuration. The tool self-corrects variations in user technique, maintaining consistency across different operators and usage instances.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent changes the parameters of the knot-tying process by fixing the geometric parameters (loop sizes, angles, distances) in the tool's structure. This transforms the variable, skill-dependent parameters of manual knot-tying into fixed, tool-determined parameters, ensuring consistent outcomes regardless of operator skill level.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250361046A1Knot-tying tool for forming double loops
Publication Date: 2025.11.27 YAGUCHI TARO
  • US20250361046A1 patent drawing
  • US20250361046A1 patent drawing
  • US20250361046A1 patent drawing

AI summary

A knot-tying tool includes a hand-held body with a pressing section at one end for securing a ribbon against an object, and first and second loop forming sections to assist in forming a decorative knot with at least two loops. The second loop forming section comprises a slit and a finger space to support loop reversal and insertion. The tool may further include markings indicating the knotting procedure.