Elastic Oar Return Mechanism for Rowing Automation
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Solution Overview
Problem
Existing rowing systems are cumbersome, costly, and require complex mechanical arrangements, including high maintenance components like rack-and-pinion gear drives, which restrict oar motion and increase weight, whereas they fail to simplify the rowing process by eliminating the need for both push and pull strokes.
Innovation Solution
The use of stretchable, retracting members like springs or elastic cords anchored to the boat and oars to store energy and return oars to a neutral position, allowing rowers to perform forward and reverse power strokes without needing to manually pull the oars back, thereby simplifying the rowing motion and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If rack-and-pinion gear drives are used to return oars to neutral position, then automated oar return is achieved, but maintenance requirements increase and operational costs rise
Solution Approach 1:
The patent extracts the complex gear drive mechanism from the system and replaces it with simple elastic members (springs or elastic cords) that perform the same function of returning the oar to neutral position. This eliminates the need for rack-and-pinion gears while maintaining automated oar return, thereby reducing maintenance requirements and operational costs.
Solution Approach 2:
The patent employs inexpensive elastic members (springs or elastic cords) instead of expensive gear drives. These elastic members are simple, durable components that require minimal maintenance and can be easily replaced if needed, significantly reducing operational costs compared to complex mechanical gear systems.
2Extent of automation
If complex mechanical arrangements are used to return oars to neutral position, then automated return function is achieved, but device complexity and weight increase
Solution Approach 1:
The patent removes complex mechanical arrangements (gears, linkages, motors) from the system and replaces them with simple elastic members that naturally return the oar to neutral position through elastic recovery. This dramatically simplifies the device while maintaining the automated return function.
Solution Approach 2:
The patent substitutes complex mechanical gear drives with elastic members that use elastic deformation and recovery to achieve the same function. This replacement eliminates complex mechanical linkages, reducing device complexity and weight while maintaining automated oar return capability.
3Extent of automation
If push-pull mechanisms are used to return oars, then automated return is achieved, but device complexity and maintenance needs increase
Solution Approach 1:
The patent extracts the push-pull mechanism from the system and replaces it with simple elastic members that provide continuous elastic force to return the oar to neutral position. This eliminates complex push-pull linkages and reduces maintenance needs significantly.
Solution Approach 2:
The patent uses inexpensive elastic members (springs or elastic cords) instead of complex push-pull mechanisms. These elastic members are simple, durable components with no moving parts to wear or fail, requiring minimal maintenance and easy replacement, thereby improving ease of repair.
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
This solution reduces the complexity and maintenance requirements of rowing systems, allowing rowers to face forward while propelling the boat in both forward and reverse directions efficiently, with the stretchable members providing balanced forces to return the oars to a neutral position, enhancing usability and reducing operational costs.
Implementation Method 1
stretchable, retracting members such as springs or elastic cords to store energy and release it to aid a rower's stroke
Data Source
AI summary
This invention relates to an apparatus and method for rowing by generating stored energy in stretchable, retracting members and using that stored energy to pull oars back to a neutral position.