Adjustable Cup Wrench for Drain Strainer Access
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Solution Overview
Problem
The existing tools face difficulties in accessing and tightening sealing rings and strainers on shower and sink drains due to limited or obstructed access, leading to potential improper seals and increased installation time.
Innovation Solution
A wrench with a 'first cup' featuring notches or tabs that engage the sealing ring or strainer, combined with an adjustable handle for improved leverage and access, allowing for easier tightening and loosening of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional pliers are used to tighten the sealing ring, then the installer can grip the small tabs on the sealing ring, but the wooden frame extending past the drain interferes with access, making the process difficult and time-consuming
Solution Approach 1:
The patent introduces a novel cup-shaped wrench with a hollow interior cavity that allows the installer to reach through the cup structure to access the sealing ring from a different spatial dimension. This circumvents the obstruction caused by the wooden frame by providing access through the open space of the cup rather than requiring direct lateral access that is blocked by the frame.
Solution Approach 2:
The cup-shaped wrench acts as an intermediary tool that bridges the gap between the installer's hand and the sealing ring. The cup structure with its notches and tabs provides a mediating mechanism that can engage with the sealing ring tabs while allowing the installer to apply torque through the handle, overcoming the access limitation imposed by the wooden frame.
2Reliability
If traditional pliers are used to tighten the sealing ring, then the installer can grip the small tabs, but the obstructed access makes it difficult to properly tighten the sealing ring, potentially resulting in an improper seal
Solution Approach 1:
The patent replaces the direct gripping action of traditional pliers with a cup-shaped wrench that utilizes a system of notches, tabs, and leverage. The wrench's internal tab structure engages with the sealing ring tabs, and the extended handle provides mechanical leverage to achieve proper tightening torque, ensuring reliable sealing despite limited access conditions.
3Adaptability or versatility
If hexagonal nuts similar in size to sealing rings are used for strainers, then the strainer can be sealed to sink or shower, but the same access problems occur when attempting to tighten the hexagonal nut with limited access
Solution Approach 1:
The cup-shaped wrench is designed with universal applicability to handle both sealing rings and hexagonal nuts. The cup's interior cavity and notch configuration can accommodate different shapes and sizes of fastening components, allowing the same tool to effectively tighten both the sealing ring on shower drains and the hexagonal nut on sink strainers, despite the different geometries of these components.
Data Source
AI summary
A wrench that includes a handle and a tool head. The tool head is positionable in a plurality of positions relative to the handle. The wrench is useful in installing and repairing shower drains and sink drains and other similar drain arrangements.