Inflatable Watercraft Fender with Adjustable Straps
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Solution Overview
Problem
Existing watercraft fenders are ineffective in protecting against dock abrasion due to their size, shape, and difficulty in adjustment, often falling between pilings or failing to prevent the craft from riding up under docks of varying heights, and require modifications or specialized equipment for inflation and attachment.
Innovation Solution
A portable, inflatable fender system with a round bladder and rugged cover, equipped with adjustable straps and a low-pressure inflation valve, allowing easy attachment and detachment to watercraft and docks without modifying the vessel, and capable of being quickly inflated, deflated, and stowed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ordinary fenders are used, then they provide some protection, but they fall into the gap between the watercraft and pilings negating protection
Solution Approach 1:
The fender is designed as an inflatable structure that can be adjusted to different sizes and shapes. The bladder can be inflated to extend the fender's reach between pilings or deflated to fit smaller spaces, allowing it to adapt dynamically to various dock configurations and piling arrangements.
Solution Approach 2:
The fender's dimensions and volume can be changed by adjusting the inflation level. This allows the same fender to provide appropriate protection for different watercraft sizes, dock heights, and piling distances by simply changing the air pressure and volume in the bladder.
2Reliability
If ordinary fenders are placed between watercraft and pilings, then they may provide protection, but they roll out of place due to wave action
Solution Approach 1:
The fender incorporates adjustable straps and mooring lines that can be tensioned to secure the fender in position. These dynamic fastening systems allow the fender to be anchored firmly to prevent rolling while still accommodating wave motion and watercraft movement.
3Reliability
If ordinary fenders are used, then they provide protection, but they do not prevent the craft from riding up and under the dock
Solution Approach 1:
The fender's vertical height can be adjusted by controlling the inflation level of the bladder. For higher docks, the fender can be inflated to greater heights to prevent the watercraft from riding up under the dock, while for lower docks, the inflation can be reduced to provide appropriate protection.
4Reliability
If fill-length fenders are used, then they provide comprehensive protection, but they require ballast, modification of watercraft or permanent mounting
Solution Approach 1:
The fender uses a flexible inflatable bladder enclosed in a protective cover, eliminating the need for rigid structures, ballast, or permanent mounting. The flexible design allows the fender to be easily attached and removed using simple straps and fasteners without modifying the watercraft.
5Reliability
If ordinary fenders are used, then they provide protection, but they are bulky and difficult to stow
Solution Approach 1:
The fender can be deflated to a compact size for storage and then inflated when needed for protection. This allows the same fender to provide comprehensive protection during use while occupying minimal storage space when not in use, eliminating the need for multiple fenders of various sizes.
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
Provides comprehensive protection against dock pilings and rails of varying heights, is easily adjustable and portable, and does not require specialized equipment or modifications to the watercraft, ensuring optimal protection and convenience for recreational boaters.
Implementation Method 1
The bladder is equipped with a valve that permits fast, easy, low-pressure inflation
Implementation Method 2
The oblong shape also creates an uneven pressure levels on the seams, thus increasing the potential for seam failure
Data Source
AI summary
A portable fender for protecting a watercraft hull from damage. The fender(s) length corresponds to the length of the watercraft likely to make contact with a dock, pier and/or pilings. An inflatable, waterproof bladder resides in a protective cover. The bladder's valve permits rapid inflation and deflation. The cover has diametrically opposed straps running its length. These straps are anchored to the cover in such a manner that loops are created at regular intervals. Mooring straps are passed through the loops and around the fender. The fender is secured between the watercraft and the dock/pier/pilings by attaching mooring straps to any convenient point on the watercraft, dock, pier, pilings or other suitable mooring point. Lengthening or shortening each individual mooring strap allows the fender to be placed in a position that will provide optimum protection. The fender is easily deflated for stowage. The watercraft does not have to be modified in any manner to use the fender.