Stabilised Slate Cutting Tool with U-Shaped Tube

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Solution Overview

Problem

Existing slate cutting tools are either too heavy to be transported by a single person or unstable and unbalanced when used on a roof, leading to inefficiencies and safety concerns during cutting and transport.

Innovation Solution

A lightweight slate cutting tool designed to be stable and balanced on roof battens, featuring a U-shaped tube with a coplanar longitudinal core and chute feet for secure retention, and a support table that allows for easy handling and movement, with a waste collection system to prevent damage and improve safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If a traditional slate cutting tool with a collection chute is used on the roof, then cutting waste can be collected, but the tool becomes unstable and tips over when the user leans on the support table

Engineering Contradiction:
Improvewaste damage to roofVSAvoidtool stability
Core Design Contradiction:
Object-generated harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent introduces a U-shaped tube element that extends laterally beyond the support table, creating a new dimensional support structure. This tube rests on the batten in addition to the feet, providing a fourth contact point that stabilizes the tool without interfering with the collection chute's waste collection function.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Weight of moving object

If the tool is made lighter for easy transport on the roof, then a single person can carry it, but the tool becomes unbalanced and difficult to handle

Engineering Contradiction:
Improvetool weightVSAvoidhandling ease
Core Design Contradiction:
Weight of moving objectVSEase of operation

Solution Approach 1:

The U-shaped tube acts as a counterbalancing element that extends beyond the support table laterally. This creates a counterweight effect that balances the tool's center of gravity, making it easier to handle and transport while maintaining stability during use.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

3Stability of the object's composition

If the feet are made to bite strongly into the batten to prevent tool tilting, then tool stability improves, but the batten is damaged

Engineering Contradiction:
Improvetool stabilityVSAvoidbatten damage
Core Design Contradiction:
Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent divides the support function into multiple elements: the original feet that contact the batten and the additional U-shaped tube that provides lateral support. This segmentation allows the feet to provide vertical support while the tube prevents tilting, reducing the need for excessive biting force from the feet alone.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3659772B1Stabilised tool for cutting slates
Publication Date: 2023.10.11 EDMA
  • EP3659772B1 patent drawingFigure 1~4

AI summary

The present invention proposes a tool for cutting a slate plate usable on a roof, which is lightweight, practical, safe and economical. The cutting tool comprises: • a cutting table (110) having a cutting slot (111) above which is arranged a guide rail (120), • a cutting carriage (130) mounted to slide along the guide rail (120), • a cutting waste collection chute (140) arranged under the cutting table and comprising a bottom (141) and two side walls (142), • a support table (170) mounted coplanarly with the cutting table (110), the tool further comprising a U-shaped tube (180), having a longitudinal web (181) and two arms (182), arranged such that in the operating position, the longitudinal web (181) is coplanar with the bottom (141) of the chute (140).