Curved Spline Replacement Tool for Window Screen Corners

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Solution Overview

Problem

Conventional spline roller tools require difficult maneuvering at odd angles and struggle to press splines into corner grooves, leading to potential damage and inefficiency in window screen replacement.

Innovation Solution

A hand-held tool with a curved edge and edge tips is used to press the spline into the groove using a rocking motion, accommodating various angles and ensuring secure fitting of the window screen.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional spline roller tool is used to press the spline into the groove, then the spline can be secured into the groove, but the tool requires difficult maneuvering at odd angles and cannot adequately press the spline into corner grooves

Engineering Contradiction:

Improvemaneuverability of the toolVSAvoidability to press spline into corner grooves

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The tool body is segmented into distinct functional zones: a curved edge portion for pressing splines in straight grooves and corner portions with edge tips for pressing splines into corner grooves. This segmentation allows each part to specialize in specific tasks, improving both ease of operation and adaptability to different groove configurations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The tool transitions from a conventional linear roller design to a curved body design that operates in multiple dimensions. The curved edge allows the tool to rock back and forth along the groove while the corner portions extend into the corner regions, enabling the tool to access and press splines into corner grooves that were previously inaccessible.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If a conventional spline roller tool is used, then the spline can be pressed into the groove, but the tool can easily roll out of the groove due to odd angle positioning

Engineering Contradiction:

Improveefficiency of spline installationVSAvoidstability of the tool in the groove

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The tool body features a curved edge that conforms to the curvature of the groove and the rocking motion required for spline installation. This curvature allows the tool to maintain stable contact with the groove walls during operation, preventing the tool from rolling out of the groove while maintaining high productivity.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Ease of manufacture

If a conventional spline roller tool is used, then the spline can be pressed into the groove, but the tool may damage the window frame due to difficult maneuvering

Engineering Contradiction:

Improvesimplicity of the replacement processVSAvoidpotential damage to the window frame

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The tool incorporates corner portions with edge tips specifically designed for corner groove work, while the curved edge portion is designed for straight groove work. This local specialization ensures that the appropriate part of the tool is used for each specific task, reducing the risk of damage to the window frame from improper tool application.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12385266B1Techniques for screen and spline replacement

Publication Date: 2025.08.12 DE BARD ADAM

AI summary

Embodiments described herein relate to techniques for spline and screen replacement. An example tool can include a handle. The tool can further include a body connected to the handle, the body including a curved first edge having a first tip at a first end, the first tip defined by the curved first edge and a second edge of the body, a third edge extending from the second edge to the handle, a second tip at a second end of the body, the second tip defined by the first edge and a fourth edge, and a fifth edge extending from the fourth edge to the handle.