Powered Roller Screed with Adjustable Handle for Wet Concrete

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Solution Overview

Problem

Existing screeding methods for wet concrete are labor-intensive and inefficient, resulting in suboptimal quality and high costs, especially for large-scale projects, as they struggle to distribute and compact concrete evenly without forms, and powered roller screeds are limited by the width of the screed roller.

Innovation Solution

A powered roller screed system with an adjustable handle and wet screed shoe that allows the screed roller to rotate relative to the handles and shoe, enabling it to be supported without forms, and featuring a detachable design for varying lengths, allowing for efficient screeding of wider areas with improved surface quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual screeding method is used, then labor intensity is reduced for small jobs, but screeding quality and efficiency deteriorate due to inability to distribute and compact concrete evenly

Engineering Contradiction:

Improvelabor intensityVSAvoidscreeding quality

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent employs a powered roller screed with motor-driven rotation that dynamically adapts to the concrete surface, providing automated screeding action that maintains high quality finish while reducing labor intensity compared to manual methods

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent replaces manual mechanical screeding with a powered system featuring a motor-driven roller that rotates to automatically level and compact concrete, substituting human labor with mechanical automation while improving screeding quality

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If powered roller screed is used, then screeding efficiency is improved, but applicability deteriorates due to width limitation requiring forms

Engineering Contradiction:

Improvescreeding efficiencyVSAvoidapplicability to different project sizes

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal screeding system that can operate both with forms for traditional applications and without forms for wet screeding applications, allowing the same powered roller screed to adapt to various project sizes and configurations

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent enables the powered roller screed to dynamically adapt its operation mode, switching between form-supported screeding and formless wet screeding based on project requirements, thereby expanding versatility while maintaining efficiency

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If wet screeding without forms is used, then adaptability to large areas is improved, but surface quality deteriorates due to lack of form support

Engineering Contradiction:

Improveadaptability to large areasVSAvoidsurface quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent replaces form-based mechanical support with a powered roller screed system that uses motor-driven rotation and controlled movement to achieve precise surface finishing in wet screeding applications, maintaining high surface quality without forms

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The powered roller screed performs self-guided screeding operations where the motor-driven roller automatically levels and compacts the concrete through its rotation and controlled progression across the surface, achieving consistent quality without external form support

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system enhances the efficiency and quality of screeding by allowing for wider coverage and better concrete distribution, reducing labor costs and improving surface finish, while maintaining the ability to handle varying project sizes.

Implementation Method 1

wet concrete has at least a degree of viscosity such that is still able to 'flow' or move in response to an applied pressure or force

Methodology Applied

Scientific EffectViscosity: Viscometer

Implementation Method 2

The wet screed apparatus may include a vibration producing mechanism to vibrate the blade, which may aid in compacting the concrete

Methodology Applied

Scientific EffectVibration: Vibration

Data Source

PatentUS9879389B1Powered roller screed with adjustable handle for wet screed attachment

Publication Date: 2018.01.30 LURA ENTERPRISES

AI summary

A cement screeding system in the form of a powered roller screed with a wet screed attachment. The wet screed attachment includes a wet screed shoe. A handle is rotationally isolated from the screed roller and is rigidly coupled to this wet screed shoe. As such, motion of this handle is transmitted to the wet screed shoe in a replicating fashion.