Ergonomic Boat Drain Plug With Lighted Garboard Access

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Solution Overview

Problem

Existing drain plugs for boats are cumbersome to tighten and loosen due to their threaded design, often requiring special tools and are difficult to grip by hand, especially in areas with poor visibility.

Innovation Solution

A drain plug system featuring an ergonomic grip and a light ring that illuminates the area around the garboard, allowing manual tightening and loosening without tools and improving visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a threaded square brass nut design is used for the drain plug, then the plug can be securely installed in the garboard, but it becomes cumbersome to tighten and loosen, requiring special tools and difficult to grip by hand

Engineering Contradiction:
Improvesecure installationVSAvoidmanual tightening and loosening
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The drain plug is segmented into two functional parts: a threaded square brass nut for secure installation in the garboard, and a separate ergonomic grip component with enhanced hand engagement features. This segmentation allows the secure threading function to remain while adding manual operability through the grip portion that can be easily held and turned by hand without requiring special tools.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the drain plug is installed in the lower-most point of the transom or hull for effective drainage, then water drainage efficiency is improved, but the area becomes difficult to access and offers poor visibility

Engineering Contradiction:
Improvedrainage efficiencyVSAvoidaccessibility and visibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The invention addresses the visibility problem by adding a lighting dimension to the otherwise dark, hard-to-reach lower hull area. The integrated light source illuminates the garboard and drain plug area, transforming the operational conditions in this difficult-to-access location and enabling easier manual operation while maintaining the optimal low-position drainage function.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If the drain plug operates in areas with poor visibility such as the lower-most point of the transom or hull, then effective drainage is achieved, but the operator cannot easily see the plug for proper installation and removal

Engineering Contradiction:
Improvedrainage functionVSAvoidvisibility of plug area
Core Design Contradiction:
ProductivityVSIllumination intensity

Solution Approach 1:

The invention merges the drainage function with an illumination function by integrating a light source with the drain plug assembly. The light ring or illuminated elements are combined with the plug structure itself, ensuring that the area around the garboard is illuminated during installation and removal operations, thereby improving visibility without compromising the drainage function.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12539946B2Threaded boat drain plug with ergonomic grip and light enabled garboard
Publication Date: 2026.02.03 PROXAMUS LLC
  • US12539946B2 patent drawing
  • US12539946B2 patent drawing
  • US12539946B2 patent drawing

AI summary

A garboard drain plug system comprising an ergonomic grip which may aid in tightening and loosening the drain plug by hand without special tools. The garboard drain plug system may comprise a light ring which may surround a garboard, and thereby illuminate an area adjacent to, or surrounding, the garboard. Together, the ergonomic drain plug, garboard, and lighted garboard ring may act alone or in cooperation to provide a method of controlling communication of a fluid through a drain of a hull or transom of a boat or vessel.