Gravity-Fed Roller Apparatus for Floor Leveling
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Solution Overview
Problem
Current methods for applying liquid floor leveling products are labor-intensive, lead to operator fatigue, and result in uneven application, with existing tools being cumbersome, inefficient, and often unsuitable for partitioned surfaces, while mechanical solutions are costly, heavy, and difficult to use.
Innovation Solution
A lightweight, compact, and easy-to-clean apparatus with a container, dispensing device, and valve system mounted on a carriage with pivoting rollers, allowing for standing operation and controlled distribution of the product without power, enabling efficient and even application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual kneeling technique is used to apply leveling product, then application can be performed with simple tools, but operator experiences strong physical fatigue and musculoskeletal disorders
Solution Approach 1:
The device segments the application function into multiple independent rollers (first roller for distribution, second roller for leveling) that work in sequence. This segmentation allows each roller to perform a specific function efficiently, reducing operator fatigue while maintaining application simplicity
Solution Approach 2:
The patent introduces an intermediary device (the dual-roller apparatus) between the operator and the ground surface. This intermediary mechanism translates simple operator movements into effective product distribution and leveling actions, eliminating the need for direct manual kneeling and spreading
2Ease of operation
If standing technique with spiked blade is used, then operator can work in standing position, but device causes product bursts on rough ground and splashing near walls
Solution Approach 1:
The patent applies local quality by giving each roller specific properties: the first roller has a surface designed for gentle product distribution, while the second roller has a surface optimized for leveling. This localized functional differentiation ensures uniform application without bursts or splashing
Solution Approach 2:
Instead of using a spiked blade that scrapes product from the ground (causing bursts), the patent inverts the approach by using rollers that gently deposit and smooth product. The second roller specifically inverts the scraping action by pressing excess product back into the ground uniformly
3Ease of operation
If roller device is used for standing operation, then operator can stand while applying product, but roller overflows on sides and requires repeated lifting and resuming movements
Solution Approach 1:
The patent merges the distribution function (first roller) and leveling function (second roller) into a single integrated apparatus. This combination allows both functions to be performed in one continuous motion without lifting the device, eliminating repeated movements and improving productivity
Solution Approach 2:
The first roller performs preliminary distribution of product along the intended path before the second roller levels it. This preliminary action confines the product within the roller paths, preventing side overflow and eliminating the need for repeated corrections
4Ease of operation
If mechanical pump device is used, then automation eliminates operator fatigue, but device becomes heavy, costly, and requires complex assembly and cleaning
Solution Approach 1:
The patent applies self-service by using gravity and the natural flow properties of the liquid leveling product to achieve distribution and leveling. The product flows from the container through the rollers under its own weight, eliminating the need for mechanical pumps or powered mechanisms while maintaining ease of operation
Solution Approach 2:
The patent replaces complex mechanical pumping systems with a simpler gravity-based flow system. Instead of using powered pumps to move product, the design allows product to flow naturally through the rollers, dramatically reducing device weight and complexity while eliminating operator fatigue
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
Enables efficient, fatigue-free application of leveling products with high quality and ease of use, allowing a single operator to cover large areas without splashing or staining, while being easy to handle and maintain.
Implementation Method 1
a first roller distributed along a desired path a liquid product for leveling
Implementation Method 2
a second roller leveled the product
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A device for applying a floor leveling compound to the floor, characterized in that it comprises: - a support adapted to be moved manually on the floor by rolling in a multidirectional manner; and - a reservoir carried by the support and adapted to contain a liquid leveling compound; and - a dispensing device in selective communication with a lower region of the reservoir, the dispensing device comprising a series of horizontally spaced openings through which the liquid is capable of flowing by gravity. This device allows for the application of a liquid leveling compound in a standing position, in a particularly simple, reliable, economical, and efficient manner. It is not tiring for the operator.