Double Seal Kayak Hatch With Mechanical Connectors

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Solution Overview

Problem

Conventional sealing methods for kayak cargo areas, such as stretchable rubber-like designs and die-cut sealing materials, tend to shift and change shape, leading to inconsistent sealing performance, despite efforts to affix them to the deck using glue.

Innovation Solution

A sealing system featuring a main body with mechanically linked seals, where connectors extend through the body to maintain the position of outer and inner seals relative to each other and the main body, ensuring resistance to deformation and shifting, utilizing a stiffer material for the body and a less stiff material for the seals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional stretchable rubber-like seals and die-cut sealing materials are used, then the sealing system can be manufactured at lower cost with simpler structure, but the seals tend to shift and change shape leading to inconsistent sealing performance

Engineering Contradiction:
Improvesealing consistencyVSAvoidseal structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the seal elements with a rigid support structure to form an integrated sealing assembly. Multiple seal components (outer seal, inner seal, bridge seals) are combined with a rigid body that includes mounting features, creating a unified structure that prevents shifting while maintaining sealing functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The sealing system is divided into multiple segmented components including outer seal, inner seal, bridge seals, and a rigid support structure with separate mounting features. This segmentation allows each component to be optimized for its specific function while the rigid structure maintains their relative positions.

Inventive Principle:
Principle #1Segmentation

2Reliability

If seals are affixed to the deck using glue, then the seals can be attached to the hatch body, but seals can still move even when glue is used

Engineering Contradiction:
Improveseal position stabilityVSAvoidseal attachment complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces chemical attachment (glue) with a mechanical attachment system featuring rigid support structures, mounting features, and physical connection points. This mechanical system provides more reliable position stability than adhesive alone.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If a rigid body structure is used to mechanically link seals, then dimensional stability and seal position are maintained, but manufacturing complexity and production cost increase

Engineering Contradiction:
Improvedimensional stabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The rigid support structure serves multiple functions simultaneously: it provides dimensional stability, maintains seal positions, offers mounting features for attachment, and includes integrated sealing surfaces. This multi-functionality reduces the need for separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The sealing system combines rigid materials for the support structure with flexible materials for the seal elements, creating a composite assembly that leverages the advantages of both material types - rigidity for stability and flexibility for sealing.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS10479450B2Double seal kayak hatch
Publication Date: 2019.11.19 THUNDERBIRD MOLDING GREENSBORO LLC
  • US10479450B2 patent drawing
  • US10479450B2 patent drawing
  • US10479450B2 patent drawing

AI summary

The present invention provides a sealing device for an opening. The device includes a body that has a first side and a second side. A passageway is formed through the body such that the passageway has a first end adjacent to the first side and a second end that is adjacent to the second side. A sealing member is provided that includes an outer gasket and an inner gasket. The outer gasket is positioned adjacent the first side and the inner gasket is positioned adjacent the second side. A seal connector connects the inner gasket and the outer gasket and the seal connector passes through the passageway. In this way, the inner gasket and the outer gasket are mechanically attached to the ring. The sealing device is configured for use in such applications as sealing the cargo opening on the deck of a kayak.