Cutting Deck Channel and Ramp for Clipping Discharge Control
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Solution Overview
Problem
Conventional cutting deck assemblies for lawn mowers often discharge grass clippings onto sidewalks, driveways, and gardens, lacking controlled distribution, which can lead to unsightly and unwanted debris.
Innovation Solution
A cutting deck assembly with a channel and ramp system that directs clippings from cutting chambers into a channel for controlled dispersion, preventing discharge onto adjacent surfaces and allowing for redirection onto the ground or into another cutting chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a side discharge chute is used to discharge clippings, then clippings are discharged from the assembly, but clippings are distributed outward onto sidewalks, driveways, and gardens adjacent to the discharge chute
Solution Approach 1:
The patent redirects clippings from a lateral discharge path to a downward discharge path by introducing a downwardly directed outlet and utilizing gravity. The channel system guides clippings vertically downward onto the ground surface rather than laterally outward, changing the discharge dimension from horizontal to vertical.
Solution Approach 2:
The patent introduces a channel system with ramps and directing surfaces as intermediaries between the cutting chamber and the ground. These intermediaries control and redirect the clipping flow, preventing direct lateral discharge onto adjacent surfaces while enabling controlled downward discharge onto the lawn.
2Productivity
If clippings are discharged onto adjacent surfaces, then clipping removal from the cutting deck is achieved, but unsightly and unwanted debris is created on sidewalks and driveways
Solution Approach 1:
The patent applies different structural characteristics to different parts of the discharge system. The channel includes ramps with specific angles and directing surfaces tailored to redirect clippings downward. The outlet is specifically positioned and shaped to discharge clippings onto the ground rather than onto adjacent surfaces, creating localized functional quality in the discharge path.
3Object-affected harmful factors
If a channel system with ramp is used to redirect clippings, then controlled distribution of clippings is achieved, but device complexity increases
Solution Approach 1:
The patent merges the channel, ramps, and directing surfaces into an integrated clippings management system that works together as a unified structure. The channel is formed as a single component or integrated assembly that combines multiple functions (guiding, redirecting, and discharging clippings) into one cohesive device, reducing the number of separate parts.
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 solution provides a controlled and efficient distribution of clippings, ensuring they are not deposited on unwanted areas like sidewalks or driveways, while allowing for targeted dispersion onto the lawn, enhancing maintenance efficiency.
Implementation Method 1
a ramp disposed at least partially within the channel and that includes a directing surface that is adapted to deflect at least a portion of clippings that enter the channel
Data Source
AI summary
Various embodiments of a cutting deck assembly and a grounds maintenance vehicle that includes such assembly are disclosed. The assembly includes a top surface and a sidewall extending from the top surface. The top surface and the sidewall partially surround a first cutting chamber and a second cutting chamber. The assembly further includes a channel disposed adjacent a rear portion of the sidewall and extending along a channel axis between a first end and a second end of the channel, where the first end of the channel is connected to an outlet of the first cutting chamber; and a ramp disposed at least partially within the channel and adjacent the second end of the channel. The ramp includes a directing surface that is adapted to deflect at least a portion of clippings that enter the channel from the outlet of the first cutting chamber.