Lawn Mower Discharge Control System for Airflow Direction
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Solution Overview
Problem
Existing solutions for clearing debris, such as hand-held leaf blowers, are impractical for large areas and lack control, especially when mounted on riding mowers, as they cannot effectively direct airflow to all areas or provide sufficient control.
Innovation Solution
A discharge control system for wheeled lawn care machines that includes a discharge cover attachment, an attachment mechanism, and a nozzle to focus and direct airflow from the mower's existing discharge opening, allowing for finer control and extension of airflow using a hose.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hand-held leaf blower is used for debris removal, then portability is achieved, but control over airflow direction and efficiency for large areas deteriorates
Solution Approach 1:
The patent combines the advantages of both hand-held blowers and riding mowers by integrating a discharge control system into the riding mower's existing discharge opening. This merging allows the system to maintain the productivity of a riding mower while adding the directional control capabilities similar to a hand-held blower, resolving the contradiction between portability and efficiency.
2Productivity
If a hand-held leaf blower is mounted on a riding mower, then productivity for large areas is improved, but control over airflow direction deteriorates
Solution Approach 1:
The discharge control system incorporates a movable discharge cover that can be dynamically adjusted to different positions and angles. This dynamic adjustment capability allows the operator to control airflow direction precisely while maintaining the productivity benefits of a riding mower-mounted system, resolving the contradiction between productivity and directional control.
3Speed
If the discharge opening size is reduced to increase airflow velocity, then airflow directionality is improved, but the volume of material ejected deteriorates
Solution Approach 1:
The discharge control system performs preliminary action by pre-positioning the discharge cover at optimal angles and configurations before material ejection. This preliminary positioning allows the system to maintain higher airflow velocities through optimized flow paths while preserving the volume of material ejected, as the cover is already configured to maximize both velocity and volume simultaneously.
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 controlled and efficient debris removal without the need for a separate leaf blower, providing greater directional control and reach than prior solutions.
Implementation Method 1
The discharge cover attachment may define a volume and include an exit opening which is smaller than the discharge opening in the lower deck
Data Source
AI summary
A discharge control system is secured to a discharge cover over a discharge opening in a lower deck of a riding lawn mower to focus and direct an airflow exiting the discharge opening to do useful work. The system includes a discharge cover attachment and an attachment mechanism. The discharge cover attachment defines a volume and includes an exit opening which is smaller than the discharge opening. The attachment mechanism secures the discharge cover attachment to the discharge cover.