Fence Rail Tool with Positioning Lug for Solo Installation

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Solution Overview

Problem

The process of installing fence rails between posts is challenging for a single person due to the difficulty in lifting and aligning lengthy rails, ensuring levelness, and taking accurate measurements, especially on uneven ground, which often results in errors and requires additional support for safety and professionalism.

Innovation Solution

A Fence Rail Combination Tool with a central shaft that can be secured to a fence post, featuring adjustable straps and attachments for suspending and repositioning rails, incorporating a spirit level, and providing a means to anchor a tape measure, allowing for accurate measurements and adjustments, thus enabling solo installation with improved safety and aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If one person attempts to lift and install a heavy 10 ft rail alone, then labor cost is reduced, but the difficulty of operation and safety increase significantly

Engineering Contradiction:

Improvelabor efficiencyVSAvoiddifficulty of operation

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent introduces a rail positioning device as an intermediary tool between the worker and the rail. This device provides mechanical support and control, allowing one person to safely handle heavy rails by distributing the load and providing stable positioning during installation, thus resolving the contradiction between reduced labor and increased operational difficulty

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The rail positioning device segments the installation process into controlled stages: positioning the rail horizontally first, then vertically. This breaks down the complex task of lifting and positioning a heavy rail into manageable steps, reducing operational difficulty while maintaining labor efficiency

Inventive Principle:

Principle #1Segmentation

2Productivity

If one person holds the rail mid-point to hammer one end into the post, then the task can be completed alone, but the rail alignment precision deteriorates

Engineering Contradiction:

Improvework efficiencyVSAvoidrail alignment precision

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The rail positioning device performs preliminary actions by first establishing horizontal alignment of the rail before vertical installation. The device includes level indicators and positioning mechanisms that ensure the rail is properly aligned horizontally and at the correct height before being secured to the post, thereby maintaining precision while enabling solo work

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The device incorporates self-leveling and self-positioning features that automatically adjust and indicate when the rail is correctly aligned. This eliminates the need for constant manual adjustment and monitoring, allowing one person to achieve precise alignment without requiring another worker to hold or monitor the rail position

Inventive Principle:

Principle #25Self-service

3Stability of the object's composition

If clamps are used to hold the rail, then the rail position is stabilized, but the rail cannot be freely adjusted and moved

Engineering Contradiction:

Improverail position stabilityVSAvoidrail adjustability

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The rail positioning device employs dynamic clamping mechanisms that can transition between locked and adjustable states. The clamps can be easily loosened for adjustment and tightened for stabilization, allowing the rail to be freely positioned during alignment and then securely fixed once the desired position is achieved, thus balancing stability and adjustability

Inventive Principle:

Principle #15Dynamics

4Ease of repair

If the rail is temporarily nailed to the post for tool extraction, then the tool can be removed, but the post is damaged and the rail cannot be repositioned

Engineering Contradiction:

Improvetool extraction easeVSAvoidfence structure integrity

Core Design Contradiction:

Ease of repairVSReliability

Solution Approach 1:

The device extracts the damaging element (nails) from the system and replaces it with a non-damaging extraction method. The tool is designed to be pulled out using a hand grip or lever mechanism that applies force to the tool body rather than requiring nails to be driven into the post for removal, thus eliminating post damage while enabling tool extraction

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using permanent fasteners like nails that damage the post, the invention employs temporary, reusable mechanical fastening elements that can be repeatedly installed and removed without damaging the post or rail. These elements serve their purpose of securing the rail during installation and then can be cleanly removed, leaving no damage

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS11555328B2Fence rail combination tool

Publication Date: 2023.01.17 PERRY RICHARD

AI summary

A fence rail combination tool for supporting a fence rail during fixing comprising an elongated main body, a tip, and a head to retain at least one strap upon the elongate body said tip at a first end for piercing a fence post and an enlarged head at a second end, a lug or fin is incorporated on the body between the first end and the second end and has a slot or aperture therein receiving the strap, wherein the lug or fin acts as a stop to limit insertion of the tip into the fence post and acts to reduce, prevent or limit sagging of the tool under the weight of the supported rail.