Grout Leveler Tool with Adjustable Depth Reference
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Solution Overview
Problem
Existing grouting tools lack a reliable method to determine the correct depth of grout leveling relative to stationary features, such as shower drains, and have limited reach, requiring more effort to cover larger grout footprints.
Innovation Solution
A grout leveler tool comprising two elongate scraping boards connected by nut and bolt hardware, with a depth adjustment block, allowing for adjustable length and depth settings to ensure accurate leveling and extended reach, using screw bolts, washers, and wingnuts for assembly and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a typical shovel pan style grout tool is used, then the tool is simple and easy to manufacture, but the operator cannot determine the correct grout depth and must level by eye, reducing measurement precision
Solution Approach 1:
The patent applies preliminary action by pre-attaching reference tiles to the scraping board at predetermined positions before use. These reference tiles establish the correct grout depth relative to the drain feature in advance, eliminating the need for the operator to measure and determine depth during the leveling process. The reference tiles are positioned at distances corresponding to the desired grout depth, allowing direct visual comparison during operation.
Solution Approach 2:
The reference tiles serve as an intermediary between the operator and the grout depth measurement. Instead of directly measuring the grout depth against the drain feature, the operator uses the reference tiles as a mediator that translates the complex spatial relationship into a simple visual comparison. The reference tiles bridge the gap between the drain feature and the grout surface, making depth determination straightforward.
2Productivity
If a shovel pan style grout tool is used, then the tool structure is simple, but the shorter length requires more task work to cover larger grout footprints, reducing productivity
Solution Approach 1:
The patent applies segmentation by dividing the scraping board into multiple sections with reference tiles attached at different positions along its length. This segmentation allows different portions of the board to reference different depth requirements for different areas of the grout footprint, enabling the operator to efficiently level large areas by simply repositioning the board rather than using multiple tools.
Solution Approach 2:
The scraping board with multiple reference tiles serves multiple functions: it levels grout to different depths for different areas, references multiple drain features simultaneously, and can accommodate various tile thicknesses. This multi-functionality allows a single tool to cover larger grout footprints efficiently, improving productivity without requiring the operator to switch between multiple specialized tools.
3Measurement precision
If reference tiles are attached to the scraping board, then the tool provides depth guidance, but the device complexity increases due to additional components and assembly steps
Solution Approach 1:
The reference tiles are made from inexpensive materials and can be easily replaced if damaged or worn. Their low cost allows for simple attachment methods that do not require complex fastening mechanisms. The tiles serve their purpose effectively and can be discarded or replaced without significant expense, making the increased device complexity acceptable.
Solution Approach 2:
The reference tiles are pre-positioned and attached to the scraping board during manufacturing or before use, establishing the depth references in advance. This preliminary action eliminates the need for complex adjustment mechanisms during operation, as the tiles are already in their correct positions. The attachment process is simplified because the tiles don't need to be precisely positioned during field use.
Data Source
AI summary
A grout removal tool has a first long grout scraping board with an elongate through slot and a second long grout scraping board having at least two drill holes aligned with the slot for accepting screw bolts, the boards held together by screw bolts and wingnuts the boards adjustable to extend the overall working length of the tool. The tool further including a depth adjustment block mounted to one of the grout scraping boards, the block installed over threaded posts seated into the end of the host scraping board and extending through an elongate slot or slots with wingnuts, the depth adjustment block adjustable to preserve an offset dimension leveraged by an operator to remove excess grout from around a fixed feature by placing the offset block down on top of the fixed feature and removing grout around the feature according to the offset dimension.


