Ergonomic Needle Assembly for Carpet Loop Formation
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Solution Overview
Problem
Traditional rug hooking tools require high skill and manual endurance to produce consistent loops, leading to user fatigue and discomfort, especially for those with arthritis or dexterity issues, making it challenging for beginners or long-term users.
Innovation Solution
A needle assembly with a handle and needle design featuring a compression fit, ergonomic grip, and a channel system for easy yarn threading, allowing for rapid and consistent loop formation with reduced strain on the user's hand and arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional rug hooking tools are used to pull loops, then rug hooking can be performed, but high skill level and manual endurance are required, leading to user fatigue and discomfort
Solution Approach 1:
The patent replaces the traditional manual rug hooking mechanism with a punch needle that pushes loops through fabric rather than pulling them. This mechanical substitution eliminates the need for complex hand movements and grip strength, allowing users to simply push the needle through the material to create consistent loops rapidly without fatigue
Solution Approach 2:
The punch needle design allows the tool to create loops automatically through a simple pushing motion. The needle pushes yarn through the fabric and forms loops on its own without requiring the user to manually manipulate the yarn, making the process self-executing and eliminating the need for high manual skill
2Productivity
If traditional punch needle tools are used to push loops, then loop formation is possible, but repeated insertion and extraction are required, causing wear on user's grip and fingers
Solution Approach 1:
The patent combines the needle, handle, and yarn feeding mechanism into a single integrated punch needle tool. This merging eliminates the need for separate operations of inserting and extracting different components, as the entire tool remains in place while yarn is fed through it, reducing repetitive motion and user fatigue
Solution Approach 2:
The yarn is pre-threaded through the needle and fabric before the loop formation process begins. This preliminary action eliminates the need for repeated insertion and extraction to feed yarn, as the pre-threaded yarn can be pushed through continuously, reducing user fatigue and improving comfort
Data Source
AI summary
A needle assembly for use in carpeting includes a handle having a first longitudinal axis running from a forward end to a rear end, a shaft section running along the first longitudinal axis with a first portion having a first outer diameter and a second portion, where the second portion has a second outer diameter representing a maximal outer diameter of the second portion, and the second outer diameter is less than the first outer diameter, a first bore a first maximal diameter and a front-end opening. The needle assembly includes a needle having a shank with a second maximal diameter permitting insertion of the shank in the first bore. The needle includes a blade disposed between the shank and the front end, and a tip section disposed between the blade and the front end, having a transverse opening, and terminating with a pointed tip.