Dual Hydrofoil Linear Drive Without Bearings or Bushings
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Solution Overview
Problem
Existing power systems for hydrofoil-driven boats require support devices like bearings and bushings, which introduce friction and require lubrication, limiting efficiency and reliability.
Innovation Solution
A linear drive system using linkages to maintain the drive rod in linear motion, eliminating the need for bearings and bushings by employing a coupled dual drive system with return springs to facilitate direction changeover and power hydrofoils for propulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional power systems use bearings and bushings to support moving parts, then the system can maintain rotational motion, but friction increases and lubrication is required which reduces efficiency and reliability
Solution Approach 1:
The patent removes bearings and bushings from the hydrofoil drive system, replacing rotational support mechanisms with a linear motion system that eliminates these friction-generating components entirely. The drive rod moves linearly through the housing without requiring rotational support devices.
Solution Approach 2:
The patent replaces the traditional rotational mechanical system with a linear motion system using a drive rod that moves back and forth in a straight line. This substitution eliminates the need for bearings and bushings, reducing friction and the associated energy losses.
2Ease of operation
If bearings and bushings are used to support the drive mechanism, then rotational motion is maintained, but the system requires lubrication which increases complexity and maintenance needs
Solution Approach 1:
The patent extracts and removes the lubrication system and associated components by eliminating bearings and bushings. The linear drive system operates without these components, thereby removing the need for lubrication and simplifying the overall system.
Solution Approach 2:
The linear drive system is designed to operate without external lubrication, as the drive rod moves through a housing that does not require lubricated bearing surfaces. The system serves itself by eliminating components that would otherwise require maintenance.
3Reliability
If a linear drive system is used to eliminate bearings and bushings, then friction is reduced and reliability increases, but the system requires linkages to maintain linear motion which adds structural complexity
Solution Approach 1:
The patent divides the drive system into distinct functional segments: the linearly moving drive rod, the stationary housing, and the coupling mechanism to the hydrofoil. This segmentation allows each component to be optimized for its specific function while maintaining overall system simplicity.
Solution Approach 2:
The patent combines the drive rod and housing into a integrated linear motion system where the drive rod moves directly within the housing structure. This merging eliminates the need for separate bearing assemblies and reduces overall structural complexity despite the presence of linkages.
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
The system enhances efficiency and reduces friction, allowing for smoother operation and increased reliability by maintaining linear motion without the need for traditional support devices, thereby improving the performance of hydrofoil-driven boats.
Implementation Method 1
A linear drive system with a return spring portion which is adapted to facilitate linear direction changeover
Implementation Method 2
A linear drive system adapted for repetitive driving using a linear motor
Implementation Method 3
As a hydrofoil-equipped watercraft increases in speed, the hydrofoil elements below the hull develop enough lift to raise the hull out of the water
Data Source
AI summary
A linear drive system adapted for repetitive driving using a linear motor. The drive system may be used to power pumping hydrofoils which drive a boat or ship. Linkages are used to maintain the driven portion in linear motion. A coupled dual drive system in which two driven portions are coupled such that their coupled motions travel at the same velocity in opposed directions. The coupled linear drive system which may be used as a mechanical power source for drive systems used in transportation and industry. A boat with dual pumping hydrofoils adapted for propel a boat using the hydrofoils for both lift and propulsion.