Multipurpose Chain Saw Servicing Tool Design

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Solution Overview

Problem

Chain saws face maintenance challenges due to debris accumulation, which causes air, fuel, and oil-related malfunctions, and users lack a convenient tool for cleaning and adjusting the chain tension and caps.

Innovation Solution

A multipurpose tool combining a nut driver, screwdriver, and brush functions, with a shaft and elongated tube accommodating sockets for different nuts and a brush that slides between positions on the shaft, allowing for simultaneous and unimpeded use of all functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a brush is mounted on the chain saw for cleaning, then cleaning capability is improved, but the brush becomes unavailable when needed because it is mounted on the saw itself

Engineering Contradiction:

Improvebrush accessibilityVSAvoidbrush availability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The brush is made movable along the shaft rather than being fixed in position. The brush can slide to different locations along the shaft, allowing it to be positioned for cleaning the chain saw body or removed entirely when needed for other tasks, thus providing both accessibility and availability.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple separate tools (brush, nut driver, screwdriver) are carried for chain saw servicing, then all functions are available, but the tool collection becomes cumbersome and time-consuming to use

Engineering Contradiction:

Improvetool functionalityVSAvoidtime to switch between tools

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Multiple separate tools (brush, nut driver, screwdriver) are merged into a single integrated tool. The brush is mounted on the shaft of a nut driver, and a screwdriver blade is attached to the opposite end of the shaft, allowing all three functions to be performed with one tool without needing to switch between separate instruments.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The tool is designed to perform multiple functions: cleaning (brush), nut driving (sockets on tube ends), and screw driving (blade on shaft end). This multi-functional design eliminates the need for multiple separate tools while maintaining all necessary servicing capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Stability of the object's composition

If the brush is fixed on the shaft, then the brush function is stable, but the screwdriver function is impaired by the brush presence

Engineering Contradiction:

Improvebrush position stabilityVSAvoidscrewdriver function accessibility

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The brush is made movable along the shaft rather than being fixed. It can slide to positions where it does not interfere with the screwdriver blade operations, and can be repositioned or removed when the screwdriver function is needed, thus maintaining both stability when cleaning is performed and accessibility when screw driving is required.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7900304B2Multifunction tool for servicing chain saws

Publication Date: 2011.03.08 BIHLMAIER MICHAEL

AI summary

A single tool functioning as a screwdriver, a socket wrench and a brush. A shaft serves as an element of a screwdriver, the shaft of a socket wrench and a handle and support for a brush; In one embodiment, a tube with sockets at both ends is attached at its center to one end of a shaft that is also slidably disposed within an axial channel through a brush, and the other end of the shaft is shaped as a screwdriver blade.