Jet Watercraft Intake-Clearing Tool for Drive Shaft Obstruction
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Solution Overview
Problem
Existing methods for clearing intake obstructions in jet-propelled water vessels, such as jet boats, are hindered by limited reach due to the drive shaft's presence, require unstable positioning in rough seas, and lack visibility of the intake, leading to incomplete blockage removal and potential engine damage.
Innovation Solution
A tool with a flexible shaft and handle designed to reach the intake grate, featuring a distal tip narrower than the intake grate's tines, made of resilient material like crosslinked polyethylene, allowing for buoyancy and easy insertion, and a handle wider than the cleanout port to prevent loss, enabling complete blockage removal without hand insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cleanout port is provided to access the intake grate, then blockage removal becomes possible, but the drive shaft blocks the path and limits user reach
Solution Approach 1:
A long rigid rod tool serves as an intermediary device, extending the user's reach from the cleanout port to the intake grate while navigating around the drive shaft. The tool's length (at least 109 cm) allows it to span the distance from the cleanout port through the drive shaft area to the intake grate, enabling blockage removal without direct hand insertion.
Solution Approach 2:
The tool design incorporates a distal tip with dimensions smaller than the spacing between intake grate tines, allowing it to pass through the grate structure in a dimensional sense that the user's hand cannot achieve due to the drive shaft obstruction.
2Ease of operation
If the user reaches into the cleanout port to remove blockages, then blockage removal is possible, but user stability becomes problematic in rough seas
Solution Approach 1:
The long rigid rod tool acts as a mediator that allows the user to remain in a stable position on the swim platform while the tool extends down to reach the intake grate. This eliminates the need for the user to hang from the platform with feet in the water, significantly improving stability in rough seas.
3Loss of information
If the cleanout port is positioned at an angle for access, then the drive shaft is visible, but the user cannot see the entire intake grate
Solution Approach 1:
The tool provides tactile feedback as it contacts blockages and the intake grate structure, allowing the user to detect the presence and location of obstructions. By feeling resistance and navigating the tool through different positions, the user can systematically clear the entire intake area even without visual confirmation of all surfaces.
4Ease of operation
If the user inserts their arm to reach the intake grate, then direct manipulation is possible, but the forearm width limits penetration depth
Solution Approach 1:
The long rigid rod tool serves as an intermediary that can be inserted through the limited passage of the cleanout port while extending to reach the intake grate. The tool's slender profile allows it to pass through the 5 cm passage on either side of the drive shaft, whereas a user's forearm cannot penetrate far enough.
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
Enables effective and stable blockage removal from the intake grate, ensuring complete clearance and preventing engine damage by providing a tool that can reach and maneuver around the drive shaft, maintaining user balance and visibility during the process.
Implementation Method 1
The shaft is made of flexible resilient material. The flexible resilient material is a resin. The flexible resilient material includes crosslinked polyethylene.
Implementation Method 2
By being a tube with closed ends, the walls of the tube define a pocket of air therewithin. The pocket of air allows the tool to float in water. The size of the pocket of air should be large enough compared to the weight of the tool to make the tool net buoyant.
Data Source
AI summary
A method clears a blockage from an intake grate of a jet-powered water vehicle. The method involves providing a tool. The next step is inserting the tool into the cleanout port of the jet-powered water vehicle. The next step is moving said distal tip along said intake grate to clear the blockage from the intake grate. The tool for cleaning a blockage from the intake of the jet-powered water vehicle includes a shaft and a handle. The shaft has a distal end, a proximal end, and a length between said distal end and said proximal end. The length is at least as long enough to reach the intake from a top of the access port. The handle is connected to the proximal end. The handle is wider than the access port.